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首页> 外文期刊>Revista Brasileira de Ciência Avícola >Effects of methionine source, arginine: lysine ratio and sodium chloride level in the diets of grower broilers reared under high-temperature conditions
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Effects of methionine source, arginine: lysine ratio and sodium chloride level in the diets of grower broilers reared under high-temperature conditions

机译：蛋氨酸源，精氨酸：赖氨酸比和氯化钠水平在高温条件下饲养的研磨肉鸡饮食中的影响

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摘要

The objective of this study was to evaluate the influence of methionine sources (DL-methionine 99% powder (DLM) or methionine hydroxy analog liquid 88% (HMTBA)), arginine:lysine (Arg:Lys) ratio and sodium chloride (NaCl) content in the diet of broilers on their performance, carcass yield, serum biochemistry, duodenal mucosal morphology, and immune response. Birds were kept under high temperature conditions during the grower phase and were inoculated or not with an antigen. The use of HMTBA promoted better live performance and carcass yield than the use of DLM. Diets with 1.05 Arg:Lys ratio resulted in better live performance, higher carcass and breast meat yields, longer villi, shallower crypts, and stronger immune response when broilers were challenged than the 1.40 ratio. The dietary supplementation of 6.0 g NaCl/kg promoted better growth performance and carcass weight than 2.0 g NaCl/kg. There was no influence of the different methionine sources or NaCl concentrations on any evaluated intestinal morphology parameter or immune response, nor of any interactions between these sources of variation.
机译：本研究的目的是评估蛋氨酸源（D1-甲硫氨酸99％粉末（DLM）或甲硫氨酸羟基模拟液88％（HMTBA））的影响，精氨酸：赖氨酸（Arg：Lys）比和氯化钠（NaCl）肉鸡饮食中的含量，胴体产量，血清生物化学，十二指肠粘膜形态和免疫应答。在种植者期间在高温条件下保持鸟类，并接种或不用抗原接种。使用HMTBA促进了比使用DLM的更好的现场性能和胴体产量。饮食与1.05 arg：Lys比率导致更好的现场表现，更高的胴体和乳房肉产量，较长的绒毛，较浅的地穴，当肉鸡挑战的比例挑战时，较强的免疫反应。膳食补充剂为6.0g NaCl / kg促进了比2.0g NaCl / kg的更好的生长性能和胴体重量。不同的甲硫氨酸源或NaCl浓度对任何评估的肠形态参数或免疫应答，也没有这些变异来源之间的任何相互作用的影响。

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