補充纈氨酸可改善泌乳母豬的免疫和內分泌功能

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　　Valine supplementation improves immune and endocrine function of lactating sows
　　補充纈氨酸可改善泌乳母豬的免疫和內分泌功能
　　作者:Yi, P., Yi, C., Shao-Hui, F., Li-Xiang, C.和Jian-Hua, H..
　　論文題目: Dietary valine supplementation improves immune and endocrine function of lactating sows.
　　論文發表在第13屆國際氨基酸，多肽和蛋白質大會論文集.575. DOI 10.1007/s00726-013-1540-y
　　

       在以前的研究中，日糧補充纈氨酸可提高母豬生產性能，它可能與免疫系統和內分泌功能的改善有關系。32頭健康母豬（長白x約克夏，胎次和身體狀況差不多）被分配到四個日糧組之中的一組：基礎日糧（0.93％賴氨酸，纈氨酸0.84％）或者基礎日糧中分別添加0.10％，0.25％和0.40％的纈氨酸，從妊娠107天到哺乳期第21天添加。在哺乳期第10和18天的收集血液樣品，在哺乳期第1和10天采集奶水。
　　結果表明，日糧補充纈氨酸明顯地增加了哺乳期第10和18天的血清白蛋白濃度（P <0.05），第18天的血清免疫球蛋白M，免疫球蛋白G和催乳素濃度增加了（P <0.05）。補充纈氨酸使得哺乳期第14天奶水中的胰島素濃度也顯著增加（P<0.05），并增加了哺乳期第1和14天奶水中生長激素的濃度。日糧補充纈氨酸易于增加乳白蛋白和IgM濃度（P> 0.05），這往往會降低乳豬的腹瀉率（P>0.05）。
　　因此，有人建議，日糧補充纈氨酸，母豬獲得更好的性能可能主要與母豬免疫功能改善以及奶源性生長因子濃度提高有關。
　　英文來源：pig333.com
　　譯者：IRIS


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英文原文：　　In previous study, dietary valine supplementation improved sow performance, it may be related to immune and endocrinology function improvement. Thirty-two healthy sows (Landrace x Yorkshire, similar parity, and body condition) were assigned to fed one of the four diets: basal diet (0.93 % Lysine, 0.84 % Valine) or basal diet supplemented with 0.10 %, 0.25 %, and 0.40 % valine respectively from 107 days of gestation to 21 days of lactation. Blood samples were collected at 10 and 18 days of lactation, milk samples were collected at 1 and 10 days of lactation.

　　The results showed that dietary valine supplementation significantly increased serum albumin concentrations at 10 and 18 days of lactation (P<0.05), and increased serum Immunoglobulin M, Immunoglobulin G and Prolactin concentrations at 18 days (P<0.05) of lactation. Valine supplementation also significantly increased milk insulin concentrations at 14 days of lactation (P<0.05), and increased milk growth hormone concentrations at 1 and 14 days of lactation. Dietary valine supplementation tended to increase milk ALB and IgM concentrations (P>0.05) and tend to reduce diarrhoea rate in suckling pigs (P>0.05).

　　Therefore, it was suggested that better performance of sows fed valine supplemented diet could be mainly related to improved sows’ immune function and increased milk-borne growth factors concentrations.