Efficacy of 2-hydroxy-4-methylthiobutanoic acid compared to DL-Methionine on growth performance, carcass traits, feather growth, and redox status of Cherry Valley ducks
Efficacy of 2-hydroxy-4-methylthiobutanoic acid compared to DL-Methionine on growth performance, carcass traits, feather growth, and redox status of Cherry Valley ducks
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2-羟基-4-甲基硫代丁酸与 DL-蛋氨酸相比对樱桃谷鸭生长性能、胴体性状、羽毛生长和氧化还原状态的功效
DOI：
10.3382/ps/pey196
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发表时间：
2018-09-01
期刊：
影响因子：
4.4
通讯作者：
Sun, Lv-Hui
中科院分区：
文献类型：
--
作者：
Zhao, Ling;Zhang, Ni-Ya;Sun, Lv-Hui
本试验旨在比较2-羟基-4-甲基硫代丁酸（DL-HMTBA）与dl -蛋氨酸（DLM）作为蛋氨酸来源对樱桃谷鸭生长性能、胴体性状、羽毛生长和氧化还原状态的生物功效。试验选用630只公鸭，随机分为9个饲粮处理组，每组7个重复，每个重复10只鸭。第一组饲喂不添加蛋氨酸的基础饲粮（BD），硫氨基酸总量不足。在第2 ~ 5组和第6 ~ 9组，在BD中添加4个增加剂量的蛋氨酸作为DLM或DL-HMTBA。试验时间为1 ~ 42日龄。饲粮中添加DLM和DL-HMTBA与添加BD相比，可提高体增重、采食量以及胴体、胸肉和羽毛的重量。两种蛋氨酸来源对生长性能、胴体性状和羽毛生长无显著差异。添加蛋氨酸可以改善胸大肌中某些氧化还原标志物的浓度，但在这方面，DLM和DL-HMTBA之间存在显著差异，添加DL-HMTBA显著提高了胸大肌中总抗氧化能力、谷胱甘肽过氧化物酶活性和还原性谷胱甘肽浓度。不同来源的蛋氨酸在胸大肌中氧化谷胱甘肽和丙二醛的浓度方面没有显著差异。与BD相比，DLM和DL-HMTBA均能提高樱桃谷鸭胸大肌丙二醛浓度。由此可见，DLM和DL-HMTBA对樱桃谷鸭的生长性能、胴体性状和羽毛生长具有相同的生物学价值。此外，与DLM相比，DL-HMTBA具有更好的抗氧化能力，可以降低鸭肉在死后储存过程中的氧化过程，从而提高鸭肉的品质。
The objective of this study was to compare the bio-efficacy of 2-hydroxy-4-methylthiobutanoic acid (DL-HMTBA) with that of DL-methionine (DLM) as sources of methionine in terms of the growth performance, carcass traits, feather growth, and redox statuses of Cherry Valley ducks. Six hundred and thirty male ducks were randomly allotted to 9 dietary treatment groups with 7 replicates of 10 birds each. The first group received a basal diet (BD) without methionine addition that was deficient in the total number of sulfur amino acids. In Groups 2 to 5 and Groups 6 to 9, the BD was supplemented with 4 increasing doses of methionine as either DLM or DL-HMTBA. The trial was run from ages 1 to 42 d. Dietary supplementation with DLM and DL-HMTBA improved body weight gain and feed intake as well as weights of carcasses, breast meat, and feathers compared with the BD. No significant difference was observed between the 2 methionine sources on growth performance, carcass traits, and feather growth. Concentrations of some redox markers in the pectoralis major muscle were improved by addition of methionine to the BD. However, a significant difference was observed between DLM and DL-HMTBA in this respect, as the supplementation of DL-HMTBA significantly increased the total antioxidant capacity, the activities of glutathione peroxidase, and the concentration of reduced glutathione in the pectoralis major muscle, compared with DLM. No significant difference between methionine sources was found with regard to the concentrations of oxidized glutathione and malondialdehyde in the pectoralis major muscle. Both DLM and DL-HMTBA increased malondialdehyde concentrations in the pectoralis major muscle compared with the BD. In conclusion, these results indicated that DLM and DL-HMTBA have equal biological value for the growth performance, carcass traits, and feather growth of Cherry Valley duck. Moreover, the improved antioxidant capacity observed with DL-HMTBA makes this a better candidate than DLM for lowering the oxidation process in the meat during postmortem storage and thereby contributes to a better duck meat quality.