Effects of full-fat rice bran inclusion in diets on growth performance and meat quality of Sichuan goose
作者：
Sun, W.;Kang, P.* ;Xie, M.;Hou, S. S.;Wu, T.;...
期刊：
British Poultry Science ,2016年57(5):655-662 ISSN：0007-1668
通讯作者：
Kang, P.
作者机构：
[Liu, Y. L.; Hou, Y. Q.; Wu, T.; Kang, P.; Sun, W.; Mei, H. M.; Wu, L. Y.] Wuhan Polytech Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Hubei, Peoples R China.;[Sun, W.; Xie, M.; Hou, S. S.] Chinese Acad Agr Sci, Inst Anim Sci, Beijing, Peoples R China.
通讯机构：
[Kang, P.] W;Wuhan Polytech Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Hubei, Peoples R China.
摘要：
This trial was conducted to study the effect of full-fat rice bran inclusion in diets on growth performance, carcass and meat quality and fatty acid composition in Sichuan goose. A total of 204 Sichuan white male geese (28-d-old, 984 ± 15 g) were used in the 42-d assay. Full-fat rice bran inclusion in diets was 0%, 6%, 12% and 18%, respectively. On d 70, two geese from each pen were randomly selected and killed for measuring the carcass and meat quality and the meat fatty acid composition. The results showed that full-fat rice bran inclusion had no effect on average daily gain during 28–56 d, but rice bran inclusion at 18% increased average daily gain during 57–70 d. In addition, the full-fat rice bran supplementation decreased the subcutaneous fat yield, and the inclusion of full-fat rice bran in amounts of 12% and 18% decreased the half-eviscerated carcass yield, eviscerated carcass yield and crude fat content in goose meat. Moreover, full-fat rice bran supplementation had no effect on the content of total saturated fatty acid (SFA), but decreased the content of total monounsaturated fatty acid (MUFA). The inclusion of full-fat rice bran in amounts of 12–18% increased the content of total polyunsaturated fatty acid (PUFA) and total n-6 in goose meat and in the amount of 18% increased n-3 fatty acids content in goose meat. The results indicated that the rice bran inclusion had a positive effect in geese by stimulating growth performance and improving meat quality and fatty acid composition of goose meat. © 2016 British Poultry Science Ltd.
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英文
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Glycine enhances muscle protein mass associated with maintaining Akt-mTOR-FOXO1 signaling and suppressing TLR4 and NOD2 signaling in piglets challenged with LPS
作者：
Liu, Yulan* ;Wang, Xiuying;Wu, Huanting;Chen, Shaokui;Zhu, Huiling;...
期刊：
AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY ,2016年311(2):R365-R373 ISSN：0363-6119
通讯作者：
Liu, Yulan
作者机构：
[Wu, Huanting; Zhang, Guolong; Zhang, Jing; Hu, Chien-An Andy; Liu, Yulan; Chen, Shaokui; Hou, Yongqing; Wang, Xiuying; Zhu, Huiling] Wuhan Polytech Univ, Hubei Key Lab Anim Nutr & Feed Sci, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Wuhan 430023, Peoples R China.;[Hu, Chien-An Andy] Univ New Mexico, Sch Med, Dept Biochem & Mol Biol, Albuquerque, NM 87131 USA.;[Zhang, Guolong] Oklahoma State Univ, Dept Anim Sci, Stillwater, OK 74078 USA.
通讯机构：
[Liu, Yulan] W;Wuhan Polytech Univ, Hubei Key Lab Anim Nutr & Feed Sci, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Wuhan 430023, Peoples R China.
关键词：
glycine;lipopolysaccharide;muscle;pro-inflammatory cytokines
摘要：
Pro-inflammatory cytokines play a critical role in the pathophysiology of muscle atrophy. We hypothesized that glycine exerted an anti-inflammatory effect and alleviated lipopolysaccharide (LPS)-induced muscle atrophy in piglets. Pigs were assigned to four treatments including the following: 1) nonchallenged control, 2) LPS-challenged control, 3) LPS+1.0% glycine, and 4) LPS+2.0% glycine. After receiving the control, 1.0 or 2.0% glycine-supplemented diets, piglets were treated with either saline or LPS. At 4 h after treatment with saline or LPS, blood and muscle samples were harvested. We found that 1.0 or 2.0% glycine increased protein/DNA ratio, protein content, and RNA/DNA ratio in gastrocnemius or longissimus dorsi (LD) muscles. Glycine also resulted in decreased mRNA expression of muscle atrophy F-box (MAFbx) and muscle RING finger 1 (MuRF1) in gastrocnemius muscle. In addition, glycine restored the phosphorylation of Akt, mammalian target of rapamycin (mTOR), eukaryotic initiation factor 4E binding protein 1 (4E-BP1), and Forkhead Box O 1 (FOXO1) in gastrocnemius or LD muscles. Furthermore, glycine resulted in decreased plasma tumor necrosis factor-α (TNF-α) concentration and muscle TNF-α mRNA abundance. Moreover, glycine resulted in decreased mRNA expresson of Toll-like receptor 4 (TLR4), nucleotide-binding oligomerization domain protein 2 (NOD2), and their respective downstream molecules in gastrocnemius or LD muscles. These results indicate glycine enhances muscle protein mass under an inflammatory condition. The beneficial roles of glycine on the muscle are closely associated with maintaining Akt-mTOR-FOXO1 signaling and suppressing the activation of TLR4 and/or NOD2 signaling pathways. © 2016 the American Physiological Society.
语种：
英文
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L-Cysteine metabolism and its nutritional implications
作者：
Yin, Jie;Ren, Wenkai;Yang, Guan;Duan, Jielin;Huang, Xingguo;...
期刊：
MOLECULAR NUTRITION & FOOD RESEARCH ,2016年60(1):134-146 ISSN：1613-4125
通讯作者：
Yin, Yulong
作者机构：
[Yin, Jie; Ren, Wenkai; Duan, Jielin; Li, Tiejun; Wu, Guoyao; Yin, Yulong; Li, Chongyong] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg,Sci Observing &, Minist Agr,Hunan Prov Engn Res Ctr Hlth Livestock, Changsha, Hunan, Peoples R China.;[Yin, Jie; Ren, Wenkai; Duan, Jielin] Univ Chinese Acad Sci, Beijing, Peoples R China.;[Yang, Guan] Univ Florida, Dept Anim Sci, Gainesville, FL 32611 USA.;[Fang, Rejun; Huang, Xingguo] Hunan Agr Univ, Dept Anim Sci, Changsha, Hunan, Peoples R China.;[Yin, Yulong] Hunan Agr Univ, Sch Life Sci, Changsha, Hunan, Peoples R China.
通讯机构：
[Yin, Yulong] C;Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg,Sci Observing &, Minist Agr,Hunan Prov Engn Res Ctr Hlth Livestock, Changsha, Hunan, Peoples R China.
关键词：
GSH;H2S;Nutritional potential;Taurine;l-Cysteine
摘要：
L-Cysteine is a nutritionally semi-essential amino acid and is present mainly in the form of L-cystine in the extracellular space. With the help of a transport system, extracellular L-cystine crosses the plasma membrane and is reduced to L-cysteine within cells by thioredoxin and reduced glutathione (GSH). Intracellular L-cysteine plays an important role in cellular homeostasis not only as a precursor for protein synthesis, but also for the production of GSH, H2 S, and taurine. L-Cysteine-dependent synthesis of GSH has been investigated in many pathological conditions, while the pathway for L-cysteine metabolism to form H2 S has received little attention with regard to prevention and treatment of disease in humans. The main objective of this review is to highlight the metabolic pathways of L-cysteine catabolism to GSH, H2 S, and taurine, with special emphasis on therapeutic and nutritional use of L-cysteine to improve the health and well-being of animals and humans This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.
语种：
英文
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功能性氨基酸复合物对断奶仔猪肌肉生长的影响
作者：
李宝成;王蕾;侯永清;张越;周佳;...
作者机构：
[李宝成; 王蕾; 侯永清; 张越; 周佳; 谢佳倩] 武汉轻工大学动物营养与饲料科学湖北省重点实验室
会议名称：
中国畜牧兽医学会动物营养学分会第十二次动物营养学术研讨会
会议时间：
2016-10-21
会议地点：
中国湖北武汉
会议论文集名称：
中国畜牧兽医学会动物营养学分会第十二次动物营养学术研讨会论文集
关键词：
谷氨酰胺;功能性氨基酸复合物;断奶仔猪;肌肉生长
摘要：
功能性氨基酸作为合成多种具有重要功能生物活性分子的必需前体物,参与调节动物的新陈代谢途径,对维持动物正常的生长、发育和繁殖都发挥着至关重要的作用。功能性氨基酸已被证实具有促进仔猪生长的作用。本试验旨在研究功能性氨基酸复合物对断奶仔猪肌肉生长的影响。试验选取24头健康的21日龄断奶仔猪(杜×长×大),随机分成3个处理组:对照组、谷氨酰胺组和复合氨基酸组,每处理组8个重复,每个重复1头猪。对照组饲喂基
语种：
中文
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The role of leucine and its metabolites in protein and energy metabolism
作者：
Duan, Yehui;Li, Fengna* ;Li, Yinghui;Tang, Yulong* ;Kong, Xiangfeng;...
期刊：
Amino Acids ,2016年48(1):41-51 ISSN：0939-4451
通讯作者：
Li, Fengna;Tang, Yulong
作者机构：
[Li, Yinghui; Kong, Xiangfeng; Tang, Yulong; Li, FN; Tang, YL; Duan, Yehui; Li, Fengna; Yin, Yulong; Feng, Zemeng] Chinese Acad Sci, Inst Subtrop Agr,Sci Observing & Expt Stn Anim Nu, Key Lab Agroecol Proc Subtrop Reg, Minist Agr,Hunan Prov Engn Res Ctr Hlth Livestock, 644 Yuanda Rd, Changsha 410125, Hunan, Peoples R China.;[Li, Yinghui; Duan, Yehui] Univ Chinese Acad Sci, Beijing 100039, Peoples R China.;[Anthony, Tracy G.; Watford, Malcolm] Rutgers State Univ, Dept Nutr Sci, New Brunswick, NJ 08901 USA.;[Hou, Yongqing; Wu, Guoyao; Yin, Yulong] Wuhan Polytech Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Wuhan 430023, Hunan, Peoples R China.;[Wu, Guoyao] Texas A&M Univ, Dept Anim Sci, College Stn, TX 77843 USA.
通讯机构：
[Li, FN; Tang, YL] C;Chinese Acad Sci, Inst Subtrop Agr,Sci Observing & Expt Stn Anim Nu, Key Lab Agroecol Proc Subtrop Reg, Minist Agr,Hunan Prov Engn Res Ctr Hlth Livestock, 644 Yuanda Rd, Changsha 410125, Hunan, Peoples R China.
关键词：
Energy homeostasis;Leucine;Pigs;Protein metabolism;alpha-Ketoisocaproate;beta-Hydroxy-beta-methylbutyrate
摘要：
Leucine (Leu) is a nutritionally essential branched-chain amino acid (BCAA) in animal nutrition. It is usually one of the most abundant amino acids in high-quality protein foods. Leu increases protein synthesis through activation of the mammalian target of rapamycin (mTOR) signaling pathway in skeletal muscle, adipose tissue and placental cells. Leu promotes energy metabolism (glucose uptake, mitochondrial biogenesis, and fatty acid oxidation) to provide energy for protein synthesis, while inhibiting protein degradation. Approximately 80 % of Leu is normally used for protein synthesis, while the remainder is converted to α-ketoisocaproate (α-KIC) and β-hydroxy-β-methylbutyrate (HMB) in skeletal muscle. Therefore, it has been hypothesized that some of the functions of Leu are modulated by its metabolites. Both α-KIC and HMB have recently received considerable attention as nutritional supplements used to increase protein synthesis, inhibit protein degradation, and regulate energy homeostasis in a variety of in vitro and in vivo models. Leu and its metabolites hold great promise to enhance the growth and health of animals (including humans, birds and fish). © 2015 Springer-Verlag Wien.
语种：
英文
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氨基酸的内源性合成限制了动物的生长、泌乳和繁殖（Ⅰ）
作者：
侯永清;姚康;印遇龙;伍国耀
期刊：
中国饲料 ,2016年(9):39-43 ISSN：1004-3314
作者机构：
动物营养与饲料科学湖北省重点实验室动物营养与饲料安全湖北省协同创新中心武汉轻工大学;[姚康] 中国科学院亚热带农业生态研究所;德克萨斯农工大学动物科学系;[伍国耀; 印遇龙; 侯永清] 武汉轻工大学
关键词：
蛋白质;肠道;营养;代谢;健康
摘要：
氨基酸（AAs）是蛋白质的组成部分。丙氨酸、天冬酰胺、天冬氨酸、谷氨酸、谷氨酰胺、甘氨酸、脯氨酸、丝氨酸等八种氨基酸是所有动物都能合成的,而精氨酸的从头合成是大多数哺乳动物的种属特异性行为（如人类、猪和大鼠）。动物体内可合成的氨基酸传统上被归类为动物的营养性非必需氨基酸,因为它们的合成量足够。然而,以下证据不支持这个假设,这些证据显示：（1）当日粮中不含精氨酸、谷氨酸、谷氨酰胺时,尽管提供了足够的其他氨基酸,但大鼠的生长缓慢;（2）当饲喂NRC推荐的满足蛋白质和氨基酸要求的玉米-豆粕型日粮,而不添加精氨酸、谷氨酸、谷氨酰胺、甘氨酸、脯氨酸时,猪不能达到最大的生长、泌乳或繁殖性能;（3）当在日粮中添加谷氨酸、谷氨酰胺、甘氨酸、脯氨酸时,鸡的瘦肉组织增加,饲料利用率提高;（4）没有后瘤胃提供谷氨酰胺或脯氨酸时,泌乳奶牛不能达到最大的乳蛋白产量;（5）当日粮中不含有谷氨酰胺和脯氨酸时,鱼不能达到最大生长;（6）精氨酸缺乏导致男子生精功能受损。氮代谢的定量分析表明,前体可用性和酶活性限制了动物体内氨基酸的合成。总之,这些研究结果支持的结论是,氨基酸的内源性合成限制动物的生长、泌乳和繁殖。
语种：
中文
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全脂米糠部分替代玉米对四川白鹅生产性能及肉品质的影响
作者：
孙伟;康萍;谢明;侯水生;吴涛;...
作者机构：
[孙伟; 康萍; 谢明; 侯水生; 吴涛; 梅慧敏; 刘玉兰; 侯永清; 吴灵英] 武汉轻工大学动物科学与营养工程学院;[孙伟; 康萍; 谢明; 侯水生; 吴涛; 梅慧敏; 刘玉兰; 侯永清; 吴灵英] 中国农业科学院北京畜牧兽医研究所
会议名称：
中国畜牧兽医学会动物营养学分会第十二次动物营养学术研讨会
会议时间：
2016-10-21
会议地点：
中国湖北武汉
关键词：
全脂米糠;鹅;胴体和肉品质;脂肪酸组成
摘要：
本试验的目的是研究全脂米糠部分替代玉米后对四川白鹅生产性能及肌肉品质和脂肪酸组成的影响。204只四川白鹅[公鹅,28日龄,(984±15)g]随机分配到四个处理组,进行为期42天的饲养试验。其全脂米糠的添加量分别为0%、6%、12%和18%。每个处理6个重复,每个重复8~9只鹅。在试验第43天,每个重复随机挑选2只鹅,屠宰取胸肌以备分析。研究结果显示,全脂米糠部分替代玉米后对28~56日龄的白鹅日
语种：
中文
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单乳酸甘油酯对断奶仔猪肠道功能的影响
作者：
谢佳倩;张越;侯永清;王蕾;周颖;...
作者机构：
[谢佳倩; 张越; 侯永清; 王蕾; 周颖; 张俊梅] 武汉轻工大学动物营养与饲料科学湖北省重点实验室
会议名称：
中国畜牧兽医学会动物营养学分会第十二次动物营养学术研讨会
会议时间：
2016-10-21
会议地点：
中国湖北武汉
会议论文集名称：
中国畜牧兽医学会动物营养学分会第十二次动物营养学术研讨会论文集
关键词：
单乳酸甘油酯;断奶仔猪;肠道功能
摘要：
当前,肠道功能紊乱严重危害着仔猪健康生长。大量实验证实,仔猪饲粮中添加中短链脂肪酸可有效防止胃肠紊乱。我们前期的研究显示,乳酸甘油酯可有效控制仔猪腹泻和改善肠黏膜形态。本试验研究了单乳酸甘油酯对断奶仔猪肠道抗氧化能力,有关基因表达量及肠道内容物菌群数量的影响。挑选16头体重相近,健康的21日龄"杜×长×大"三元杂交仔猪,随机分为两个处理组(对照组、试验组),每个处理8个重复,每个重复一头仔猪。对照
语种：
中文
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Leucine in Obesity: Therapeutic Prospects
作者：
Yao, Kang;Duan, Yehui;Li, Fengna* ;Tan, Bie;Hou, Yongqing;...
期刊：
Trends in Pharmacological Sciences ,2016年37(8):714-727 ISSN：0165-6147
通讯作者：
Li, Fengna;Yin, Yulong
作者机构：
[Li, Fengna; Yin, YL; Yao, Kang; Tan, Bie; Duan, Yehui; Wu, Guoyao; Yin, Yulong] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.;[Li, Fengna; Yin, YL; Yao, Kang; Tan, Bie; Duan, Yehui; Wu, Guoyao; Yin, Yulong] Hunan Prov Engn Res Ctr Hlth Livestock & Poultry, Changsha 410125, Hunan, Peoples R China.;[Li, Fengna; Yin, YL; Yao, Kang; Tan, Bie; Duan, Yehui; Wu, Guoyao; Yin, Yulong] Minist Agr, Sci Observing & Expt Stn Anim Nutr & Feed Sci Sou, Changsha 410125, Hunan, Peoples R China.;[Yao, Kang; Yin, Yulong] Hunan Agr Univ, Coll Anim Sci & Technol, Changsha 410128, Hunan, Peoples R China.;[Yin, Yulong] Hunan Normal Univ, Coll Life Sci, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Li, FN; Yin, YL; Li, Fengna] C;[Li, FN; Yin, YL; Yin, Yulong; Li, Fengna] H;[Li, FN; Yin, YL] M;[Yin, Yulong] S;Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.
摘要：
Obesity develops from an imbalance of energy homeostasis and is associated with chronic low-grade inflammation in white adipose tissues (WAT). Inflammation is involved in the pathophysiology of many obesity-induced disorders including insulin resistance and diabetes. Increasing evidence has shown that dietary leucine supplementation positively affects the parameters associated with obesity and obesity-related metabolic disorders. The beneficial effects include increased loss of body weight, reduced WAT inflammation, improved lipid and glucose metabolism, enhanced mitochondrial function, and preserved lean body mass. Although these beneficial effects have not been clearly established, dietary leucine supplementation, either alone or as part of a therapeutic regimen, may be a good nutritional tool in the prevention and management of obesity and obesity-induced metabolic disorders.
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英文
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Asparagine attenuates hepatic injury caused by lipopolysaccharide in weaned piglets associated with modulation of Toll-like receptor 4 and nucleotide-binding oligomerisation domain protein signalling and their negative regulators
作者：
Wu, Huanting;Liu, Yulan* ;Pi, Dingan;Leng, Weibo;Zhu, Huiling;...
期刊：
British Journal of Nutrition ,2015年114(2):189-201 ISSN：0007-1145
通讯作者：
Liu, Yulan
作者机构：
[Wu, Huanting; Liu, Yulan; Leng, Weibo; Hou, Yongqing; Li, Shuang; Shi, Haifeng; Pi, Dingan; Wang, Xiuying; Zhu, Huiling] Wuhan Polytech Univ, Hubei Key Lab Anim Nutr & Feed Sci, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Wuhan 430023, Peoples R China.
通讯机构：
[Liu, Yulan] W;Wuhan Polytech Univ, Hubei Key Lab Anim Nutr & Feed Sci, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Wuhan 430023, Peoples R China.
关键词：
Asparagine;Hepatic injury;Weaned piglets;Lipopolysaccharide;Toll-like receptor 4;Nucleotide-binding oligomerisation domain protein
摘要：
Pro-inflammatory cytokines play a key role in many models of hepatic damage. In addition, asparagine (Asn) plays an important role in immune function. We aimed to investigate whether Asn could attenuate lipopolysaccharide (LPS)-induced liver damage. Forty-eight castrated barrows were allotted to four groups including: (1) non-challenged control; (2) LPS-challenged control; (3) LPS+0·5 % Asn; and (4) LPS+1·0 % Asn. After 19 d feeding with control, 0·5 or 1·0 % Asn diets, pigs were injected with LPS or saline. Blood and liver samples were obtained at 4 h (early stage) and 24 h (late stage) post-injection. Asn alleviated liver injury, indicated by reduced serum aspartate aminotransferase and alkaline phosphatase activities linearly and quadratically; it increased claudin-1 protein expression linearly and quadratically at 24 h, and less severe liver morphological impairment at 4 or 24 h. In addition, Asn decreased mRNA expression of TNF-α and heat shock protein 70 (HSP70) linearly and quadratically at 4 h; it increased TNF-α mRNA expression, and HSP70 protein expression linearly and quadratically at 24 h. Moreover, Asn increased inducible NO synthase activity linearly and quadratically. Finally, Asn down-regulated the mRNA expression of Toll-like receptor 4 (TLR4) signalling molecules (TLR4, IL-1 receptor-associated kinase 1 (IRAK1), TNF-α receptor-associated factor 6), nucleotide-binding oligomerisation domain protein (NOD) signalling molecules (NOD1, NOD2 and their adaptor molecule receptor-interacting serine/threonine-protein kinase 2 (RIPK2)), and NF-κB p65 linearly or quadratically at 4 h. Oppositely, Asn up-regulated mRNA expressions of TLR4 and NOD signalling molecules (TLR4, myeloid differentiation factor 88, IRAK1, NOD2 and RIPK2), and their negative regulators (radioprotective 105, single Ig IL-1R-related molecule, Erbb2 interacting protein and centaurin β1) linearly or quadratically at 24 h. These results indicate that, in early and late stages of LPS challenge, Asn improves liver integrity and exerts different regulatory effects on mRNA expression of TLR4 and NOD signalling molecules. © The Authors 2015.
语种：
英文
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Dietary supplementation with glutamate precursor α-ketoglutarate attenuates lipopolysaccharide-induced liver injury in young pigs
作者：
Wang, Lei;Hou, Yongqing* ;Yi, Dan;Li, Yongtang;Ding, Binying;...
期刊：
Amino Acids ,2015年47(7):1309-1318 ISSN：0939-4451
通讯作者：
Hou, Yongqing
作者机构：
[Xiao, Hang; Hou, Yongqing; Liu, Jian; Wang, Lei; Li, Yongtang; Wu, Guoyao; Ding, Binying; Yi, Dan; Zhu, Huiling] Wuhan Polytech Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Peoples R China.;[Wu, Guoyao] Texas A&M Univ, Dept Anim Sci, College Stn, TX 77843 USA.
通讯机构：
[Hou, Yongqing] W;Wuhan Polytech Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Peoples R China.
关键词：
alpha-Ketoglutarate;Piglets;Lipopolysaccharide;Liver injury
摘要：
Abstract There is growing interest in glutamate as a functional amino acid in nutrition and health. This study was conducted to determine whether glutamate precursor α-ketoglutarate (AKG) could alleviate lipopolysaccharide (LPS)-induced liver injury in young pigs. Twenty-four piglets were randomly assigned to the control, LPS, or LPS + AKG group. Piglets in the control and LPS groups were fed a basal diet, whereas piglets in the NAC group were fed the basal diet supplemented with 1 % AKG. On days 10, 12, 14, and 16 of the trial, piglets in the LPS and LPS + AKG groups received intraperitoneal administration of LPS (80 μg/kg BW), whereas piglets in the control group received the same volume of saline. On day 16 of the trial, blood samples were collected 3 h after LPS or saline injection. Twenty-four hours post-administration of LPS or saline (on day 17 of the trial), piglets were killed to obtain liver for analysis. Dietary AKG supplementation alleviated LPS-induced histomorphological abnormalities and mitigated LPS-induced increases in aspartate aminotransferase (AST) activity and AST/ALT ratio (P < 0.05). Compared with the LPS group, dietary supplementation with AKG decreased plasma glutamate concentration, while increasing hepatic concentrations of glutamate, glutamine, leucine, asparagine, lysine, alanine, serine, threonine, valine, and phenylalanine (P < 0.05). LPS challenge dramatically increased concentrations of malondialdehyde and decreased glutathione peroxidase activity in the liver. Additionally, LPS challenge enhanced concentrations of AMP and total protein, as well as RNA/DNA and total protein/DNA ratios, while decreasing hepatic ADP concentrations. These adverse effects of LPS challenge were ameliorated by AKG supplementation. Collectively, dietary AKG supplementation provides a new means to ameliorate LPS-induced liver injury by increasing anti-oxidative capacity and improving energy metabolism in young pigs. © 2015 Springer-Verlag Wien.
语种：
英文
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Analysis of l-homoarginine in biological samples by HPLC involving precolumn derivatization with o-phthalaldehyde and N-acetyl-l-cysteine
作者：
Hou, Yongqing;Jia, Sichao;Nawaratna, Gayan;Hu, Shengdi;Dahanayaka, Sudath;...
期刊：
Amino Acids ,2015年47(9):2005-2014 ISSN：0939-4451
通讯作者：
Wu, Guoyao
作者机构：
[Hou, Yongqing; Wu, Guoyao] Wuhan Polytechn Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Peoples R China.;[Jia, Sichao; Bazer, Fuller W.; Nawaratna, Gayan; Hu, Shengdi; Hou, Yongqing; Wu, Guoyao; Dahanayaka, Sudath] Texas A&M Univ, Dept Anim Sci, College Stn, TX 77843 USA.
通讯机构：
[Wu, Guoyao] W;Wuhan Polytechn Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Peoples R China.
关键词：
Derivatization;HPLC;l-Homoarginine;N-Acetyl-l-cysteine;o-Phthalaldehyde
摘要：
l-Homoarginine (hArg) may play a role in regulating the metabolism of its structural homologue l-arginine via multiple pathways (including nitric oxide synthase) in animals. Accurate measurement of hArg is essential for studying its synthesis and utilization by cells and the whole body. Here, we describe a simple, sensitive and automated method for analysis of hArg in biological samples by high-performance liquid chromatography involving precolumn derivatization with o-phthalaldehyde (OPA) and N-acetyl-l-cysteine (NAC) as the thiol. The hArg-OPA-NAC derivative was separated at 25 °C on a reversed-phase C18 material and detected by fluorescence at excitation and emission wavelengths of 340 and 450 nm, respectively. The total running time for one sample (including the time for column regeneration) was 20 min, with the retention time for hArg being 10.03 min. The limit of detection was 188 fmol hArg, which was equivalent to 12 nM hArg in the 160-μl assay mixture. The assay was linear between 1.0 and 80 pmol hArg injected into the HPLC column (equivalent to 0.0625 and 5 μM hArg in the 160-μl assay mixture, respectively). The precision (relative deviation, %) and bias (relative error, %) of the HPLC method were 0.52-1.16 and 0.42-1.12, respectively, for aqueous solutions of hArg and for various biological samples (e.g., plasma, liver, brain and kidney). This is a highly sensitive, accurate, efficient and easily automated method for analysis of hArg in biological samples and provides a useful tool for studying the biochemistry, nutrition, physiology and pharmacology of hArg and arginine in animals and humans. © 2015 Springer-Verlag Wien.
语种：
英文
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Synthesis of polyamines from L-proline in the porcine placenta and neonatal enterocytes
作者：
Wu, Guoyao;Bazer, Fuller W.;Wang, Xiaoqiu;Johnson, Gregory A.;Hou, Yongqing;...
期刊：
Amino Acids ,2015年47(8):1669-1669 ISSN：0939-4451
作者机构：
[Bazer, Fuller W.; Wang, Xiaoqiu; Wu, Guoyao] Texas A&M Univ, Dept Anim Sci, College Stn, TX 77843 USA.;[Johnson, Gregory A.; Wu, Guoyao] Texas A&M Univ, Vet Integrat Biosci, College Stn, TX 77843 USA.;[Wu, Guoyao] Wuhan Polytech Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Peoples R China.;[Wang, Junjun; Dai, Zhaolai; Wu, Zhenlong; Wu, Guoyao] China Agr Univ, State Key Lab Anim Nutr, Beijing 100193, Peoples R China.
语种：
英文
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Intimacy and a deadly feud: The interplay of autophagy and apoptosis mediated by amino acids
作者：
Wu, Zhenlong* ;Hu, Chien-An A.;Wu, Guoyao;Zhaorigetu, Siqin;Chand, Hitendra;...
期刊：
Amino Acids ,2015年47(10):2089-2099 ISSN：0939-4451
通讯作者：
Wu, Zhenlong
作者机构：
[Sun, Kaiji; Ji, Yun; Wu, Zhenlong; Dai, Zhaolai; Wu, Guoyao; Wang, Bin] China Agr Univ, State Key Lab Anim Nutr, Coll Anim Sci & Technol, Beijing 100193, Peoples R China.;[Hu, Chien-An A.] Univ New Mexico, Dept Biochem & Mol Biol, Hlth Sci Ctr, Albuquerque, NM 87131 USA.;[Hou, Yongqing; Wu, Guoyao; Hu, Chien-An A.] Wuhan Polytech Univ, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Wuhan 430023, Peoples R China.;[Wu, Guoyao] Texas A&M Univ, Dept Anim Sci, College Stn, TX 77843 USA.;[Walton, Brian; Zhaorigetu, Siqin] Texas Heart Inst, Div Cardiol, Houston, TX 77030 USA.
通讯机构：
[Wu, Zhenlong] C;China Agr Univ, State Key Lab Anim Nutr, Coll Anim Sci & Technol, Beijing 100193, Peoples R China.
关键词：
Amino acid;Autophagy;Apoptosis;Crosstalk;Metabolism;Nutrition
摘要：
Autophagy (i.e., "self-eating") and apoptosis (i.e., type I programmed cell death) are essential and intimately involved in molecular, cellular, and whole-body homeostasis in humans and animals. Autophagy has been categorized as a mechanism of intracellular degradation, recycling, defense, and survival. To date, three types of autophagy have been identified: macroautophagy, microautophagy, and chaperone-mediated autophagy. Recent discoveries strongly suggest that macroautophagy also modulates type II programmed cell death under specific circumstances. Autophagy and apoptosis are fundamentally distinct processes, but are interconnected by common stress initiators and intermediate regulators. During the past two decades, the role of amino acid metabolism and signaling in the regulation of apoptosis and autophagy has been intensively studied. In this review, we summarize recent advances in our understanding of the molecular mechanisms that regulate both autophagy and apoptosis in the context of amino acid signaling.
语种：
英文
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绿色荧光蛋白穿梭载体的构建及其在嗜酸乳杆菌中的应用
作者：
曾娟娟;王磊;赵迪;吕阳;王蕾;...
期刊：
中国畜牧兽医 ,2015年42(10):2551-2559 ISSN：1671-7236
作者机构：
武汉轻工大学动物营养与饲料科学湖北省重点实验室,武汉,430023;[丁斌鹰; 陈洪波; 侯永清; 吕阳; 王蕾; 曾娟娟; 易丹; 赵迪; 王磊] 武汉轻工大学
关键词：
嗜酸乳杆菌;同源重组;绿色荧光蛋白
摘要：
为深入研究嗜酸乳杆菌的作用机理,以温敏型穿梭载体pSET4s为基本骨架,将绿色荧光蛋白（GFP）和嗜酸乳杆菌上、下游同源臂插入该载体,构建GFP标记的穿梭表达载体pSET4s-P1-GFP-P2。利用电转化方法将穿梭表达载体pSET4s-P1-GFP-P2转化入嗜酸乳杆菌,通过抗性和温度双重筛选获得能稳定表达GFP的重组嗜酸乳杆菌,将Western blotting和荧光显微镜观察验证的重组菌命名为ΔMG6243（GFP）。利用荧光显微镜观察和平板计数的方法对重组菌进行遗传稳定性和生物学特性研究。结果显示,重组菌在蓝光激发下可见明显绿色荧光,连传10代仍可见明显荧光,与野生菌相比,其生长特性、酸碱盐耐受性均无显著差别。结果表明,本试验已成功构建稳定表达GFP基因的重组嗜酸乳杆菌,利用温敏型穿梭载体pSET4s实现了外源基因在嗜酸乳杆菌中非抗性、整合型表达,为嗜酸乳杆菌基因重组菌的构建奠定了基础,同时GFP的标记作用也为嗜酸乳杆菌在动物体内分布、定植规律和作用机理创造了可行的条件。
语种：
中文
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副猪嗜血杆菌感染禁食初乳仔猪实验动物模型的构建
作者：
陈洪波;程蕾;向敏;赵书红;侯永清;...
期刊：
家畜生态学报 ,2015年36(06):53-62 ISSN：1673-1182
作者机构：
武汉轻工大学动物科学与营养工程学院,动物营养与饲料安全湖北省协同创新中心,湖北武汉430023;武汉市农科院畜牧兽医科学研究所,湖北武汉,430208;华中农业大学动物科学技术学院,农业动物遗传育种与繁殖教育部重点实验室,湖北武汉430070;通城县种畜场,国家级华中两头乌猪(通城猪)保种场,湖北通城437400;[黎旺明] 湖北省通城县种畜场
关键词：
副猪嗜血杆菌;禁食初乳;感染模型;通城猪
摘要：
为了利用禁食初乳(colostrum-deprived,CD)仔猪构建可靠的猪格拉泽氏病实验动物模型,本研究分别选取12头新生通城仔猪和15头新生杜长大仔猪,母猪自然分娩后对新生仔猪立即隔离并做必要消毒处理后实施人工喂养;45~46日龄,CD仔猪经气管内接种致死剂量(109 CFU)的副猪嗜血杆菌(0165菌株,血清型5)。结果显示:⑴利用本研究优化、建立的饲喂方案使得CD仔猪攻毒前存活率达到80%~83.3%;⑵所有通城CD仔猪经攻毒后临床上表现出典型的格拉泽氏病病征,其中66.7%的CD仔猪可于攻毒后存活3d;而杜长大CD仔猪可能由于存在猪胸膜肺炎放线杆菌感染导致攻毒后无明显病征;⑶通城CD仔猪剖检后明显可见纤维素性心包炎、腹膜炎、关节炎等病症,并在血液和肺脏组织中成功鉴定到细菌;⑷组织病理分析发现,细菌感染导致心脏等多种组织存在纤维蛋白沉积伴随血管肿胀和血栓,脾脏组织淋巴细胞数量减少;⑸感染可能抑制淋巴细胞增殖并导致外周血中单核细胞数量减少。以上结果表明,本研究利用通城CD仔猪成功建立了副猪嗜血杆菌感染的实验动物模型;副猪嗜血杆菌和猪胸膜肺炎放线杆菌双阴性是保证模型构建成功的关键。
语种：
中文
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Phytogenic Compounds as Alternatives to In-Feed Antibiotics: Potentials and Challenges in Application
作者：
Yang, Chengbo;Chowdhury, M. A. Kabir;Hou, Yongqing;Gong, Joshua*
期刊：
Pathogens ,2015年4(1):137-156 ISSN：2076-0817
通讯作者：
Gong, Joshua
作者机构：
[Yang, Chengbo; Chowdhury, M. A. Kabir] Jefo Nutr Inc, St Hyacinthe, PQ J2S 7B6, Canada.;[Hou, Yongqing] Wuhan Polytech Univ, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Peoples R China.;[Gong, Joshua] Agr & Agri Food Canada, Guelph Food Res Ctr, 93 Stone Rd West, Guelph, ON N1G 5C9, Canada.
通讯机构：
[Gong, Joshua] A;Agr & Agri Food Canada, Guelph Food Res Ctr, 93 Stone Rd West, Guelph, ON N1G 5C9, Canada.
关键词：
phytogenic compound;organic acid;antibiotics;gut chemosensing;anti-inflammation;quorum sensing
摘要：
This article summarizes current experimental knowledge on the efficacy, possible mechanisms and feasibility in the application of phytogenic products as feed additives for food-producing animals. Phytogenic compounds comprise a wide range of plant-derived natural bioactive compounds and essential oils are a major group. Numerous studies have demonstrated that phytogenic compounds have a variety of functions, including antimicrobial/antiviral, antioxidative and anti-inflammation effects and improvement in the palatability of feed and gut development/health. However, the mechanisms underlying their functions are still largely unclear. In the past, there has been a lack of consistency in the results from both laboratory and field studies, largely due to the varied composition of products, dosages, purities and growing conditions of animals used. The minimal inhibitory concentration (MIC) of phytogenic compounds required for controlling enteric pathogens may not guarantee the best feed intake, balanced immunity of animals and cost-effectiveness in animal production. The lipophilic nature of photogenic compounds also presents a challenge in effective delivery to the animal gut and this can partially be resolved by microencapsulation and combination with other compounds (synergistic effect). Interestingly, the effects of photogenic compounds on anti-inflammation, gut chemosensing and possible disruption of bacterial quorum sensing could explain a certain number of studies with different animal species for the better production performance of animals that have received phytogenic feed additives. It is obvious that phytogenic compounds have good potential as an alternative to antibiotics in feed for food animal production and the combination of different phytogenic compounds appears to be an approach to improve the efficacy and safety of phytogenic compounds in the application. It is our expectation that the recent development of high-throughput and “omics” technologies can significantly advance the studies on the mechanisms underlying phytogenic compounds’ functions and, therefore, guide the effective use of the compounds. © 2015 by the authors, licensee MDPI, Basel, Switzerland.
语种：
英文
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The effect of aspartate on the energy metabolism in the liver of weanling pigs challenged with lipopolysaccharide
作者：
Kang, Ping;Liu, Yulan* ;Zhu, Huiling;Li, Shuang;Shi, Haifeng;...
期刊：
European Journal of Nutrition ,2015年54(4):581-588 ISSN：1436-6207
通讯作者：
Liu, Yulan
作者机构：
[Liu, Yulan; Pi, Dinan; Leng, Weibo; Kang, Ping; Li, Shuang; Shi, Haifeng; Hou, Yongqing; Chen, Feng; Yi, Dan; Zhu, Huiling] Wuhan Polytech Univ, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Peoples R China.
通讯机构：
[Liu, Yulan] W;Wuhan Polytech Univ, Hubei Key Lab Anim Nutr & Feed Sci, Wuhan 430023, Peoples R China.
关键词：
Aspartate;Energy status;Liver;Piglets;Lipopolysaccharide
摘要：
Purpose: This study was conducted to investigate whether aspartate (Asp) could improve liver energy status in the lipopolysaccharide (LPS)-challenged pigs. Methods: Twenty-four weaned pigs were assigned to four treatments: (1) nonchallenged control (control diet and saline-treated); (2) LPS-challenged control (the same control diet and LPS-challenged); (3) LPS + 0.5 % Asp treatment (0.5 % Asp diet and LPS-challenged); and (4) LPS + 1.0 % Asp treatment (a 1.0 % Asp diet and LPS-challenged). On d 19, the pigs were injected intraperitoneally with Escherichia coli LPS at 100 μg/kg body weight, and the same volume of 0.9 % NaCl solution, respectively. All pigs were slaughtered at 24 h after LPS or saline injection, and the liver was collected for further analysis. Results: Dietary supplementation with Asp improved liver energy status evidenced by the increased ATP concentration and adenylate energy charges, and the decreased AMP concentration and AMP/ATP ratio (p < 0.05). Asp supplementation increased the mRNA expression of key enzymes in hepatic glycolysis and tricarboxylic acid (TCA) cycle, including pyruvate kinase and citrate synthase (p < 0.05), and had a tendency to increase hepatic pyruvate dehydrogenase and isocitrate dehydrogenase β mRNA expression (p < 0.10). In addition, Asp increased the mRNA expressions of hepatic AMP-activated protein kinase (AMPK) α1, AMPKα2, silent information regulator (Sirt1), and proliferator-activated receptor-γ coactivator 1α (PGC1α) (p < 0.05). Moreover, Asp increased AMPKα phosphorylation (p < 0.05). Conclusions: These results indicated that dietary supplementation of Asp could improve energy status in LPS-injured liver, which might result from motivating the metabolism pathway of TCA cycle and glycolysis and stimulating the AMPK signaling pathway. © 2014, Springer-Verlag Berlin Heidelberg.
语种：
英文
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L-Glutamine enhances enterocyte growth via activation of the mTOR signaling pathway independently of AMPK
作者：
Yi, Dan;Hou, Yongqing* ;Wang, Lei;Ouyang, Wanjin;Long, Minhui;...
期刊：
Amino Acids ,2015年47(1):65-78 ISSN：0939-4451
通讯作者：
Hou, Yongqing
作者机构：
[Ouyang, Wanjin; Long, Minhui; Liu, Yulan; Hou, Yongqing; Wang, Lei; Wu, Guoyao; Zhao, Di; Ding, Binying; Yi, Dan] Wuhan Polytechn Univ, Hubei Key Lab Anim Nutr & Feed Sci, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Wuhan 430023, Peoples R China.;[Wu, Guoyao] Texas A&M Univ, Dept Anim Sci, College Stn, TX 77843 USA.
通讯机构：
[Hou, Yongqing] W;Wuhan Polytechn Univ, Hubei Key Lab Anim Nutr & Feed Sci, Hubei Collaborat Innovat Ctr Anim Nutr & Feed Saf, Wuhan 430023, Peoples R China.
关键词：
AMPK;IPEC-1;l-Glutamine;mTOR
摘要：
Neonates (including human infants) require l-glutamine (Gln) for optimal intestinal health. This study tested the hypothesis that Gln enhances enterocyte growth via both mammalian target of rapamycin (mTOR) and AMP-activated kinase (AMPK) signaling pathways. Intestinal porcine epithelial cells (IPEC-1) were cultured for 3 days in Gln-free Dulbecco's modified Eagle medium containing 0 or 2 mM Gln. To determine the role of mTOR and AMPK on cell growth, additional experiments were conducted where medium contained 2 mM Gln and 10 nM rapamycin (Rap, an inhibitor of mTOR) or 1 μM compound C (an inhibitor of AMPK). IPEC-1 cell growth increased with increasing concentrations of Gln from 0 to 2 mM. Compared with 0 mM Gln, 2 mM Gln increased (P < 0.05) the amounts of phosphorylated 4E-binding protein 1 (4E-BP1) and ribosomal protein S6 kinase (p70S6 kinase) proteins but did not affect abundances of total or phosphorylated AMPK protein. Gln also increased mRNA levels for Bcl-2, mTOR, p70S6 kinase, 4E-BP1, COX7C, ASCT2, ODC, SGLT-1, CFTR, Na+/K+-ATPase, HSP70, and ZO-1. Similarly, cells cultured with Rap and Gln exhibited higher (P < 0.05) abundances of phosphorylated 4E-BP1 and p70S6 kinase proteins than the Rap-only group, whereas abundances of phosphorylated mTOR and 4E-BP1 proteins were increased when AMPK was inhibited by compound C. Conversely, the amount of phosphorylated AMPK increased when mTOR was inhibited by Rap, suggesting a negative cross-talk between mTOR and AMPK. Collectively, these results indicate that Gln stimulates enterocyte growth by activating the mTOR signaling pathway independently of AMPK. © 2014 Springer-Verlag Wien.
语种：
英文
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脂多糖刺激对仔猪下丘脑-垂体-肾上腺轴TLR4信号通路关键基因表达的影响
作者：
陈少魁;刘玉兰;李权;朱惠玲;侯永清;...
作者机构：
[陈少魁; 刘玉兰; 李权; 朱惠玲; 侯永清; 吴欢听; 王秀英; 刘称] 武汉轻工大学动物营养与饲料科学湖北省重点实验室,武汉430023
会议名称：
中国畜牧兽医学会动物营养学分会第七届中国饲料营养学术研讨会
会议时间：
2014-10-16
会议地点：
郑州
会议主办单位：
中国畜牧兽医学会动物营养学分会
会议论文集名称：
中国畜牧兽医学会动物营养学分会第七届中国饲料营养学术研讨会论文集
关键词：
仔猪;脂多糖;HPA轴;TLR4信号通路
摘要：
本试验旨在研究脂多糖(lipopolysaccharide,LPS)刺激对仔猪下丘脑-垂体-肾上腺(HPA)轴Toll样受体4(toll-like receptor 4,TLR4)信号通路关键基因表达的影响。选取12头(13.76±1.13)kg杜×长×大断奶仔猪,分成2个处理组,每个处理组6个重复。预试10 d后,试验组注射100μg/kg体重的LPS,对照组注射等量的生理盐水。注射LPS或生理
语种：
中文
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