| 甜菜碱对黄羽肉鸡屠宰性能和肌肉品质的影响 |
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| 引用本文： | 宋宇朵,刘强,杨密,陈瑞,周岩民,周国波,杨文武,庄苏.甜菜碱对黄羽肉鸡屠宰性能和肌肉品质的影响[J].动物营养学报,2022,34(2):897-907. |
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| 作者姓名： | 宋宇朵 刘强 杨密 陈瑞 周岩民 周国波 杨文武 庄苏 |
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| 作者单位： | 南京农业大学动物科技学院,南京 210095;宜兴市天石饲料有限公司,宜兴 214200 |
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| 基金项目： | 企业横向基金项目——甜菜碱对优质肉鸡生长性能及肌肉品质的影响研究(HM0041)。 |
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| 摘 要： | 试验旨在研究甜菜碱对黄羽肉鸡屠宰性能和肌肉品质的影响.选用400只1日龄雌性黄羽肉鸡,随机分成5组,每组8个重复,每个重复10只鸡.对照组饲喂基础饲粮,试验组在基础饲粮中分别添加125、250、500、1000 mg/kg甜菜碱.试验期74 d.结果表明:1)饲粮中添加甜菜碱可显著降低皮下脂肪厚度和肌间脂肪宽度(线性,...
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| 关 键 词： | 甜菜碱 黄羽肉鸡 屠宰性能 肌肉品质 水分分布 抗氧化能力 |
Effects of Betaine on Slaughter Performance and Muscle Quality of Yellow Feather Broilers |
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| SONG Yuduo,LIU Qiang,YANG Mi,CHEN Rui,ZHOU Yanmin,ZHOU Guobo,YANG Wenwu,ZHUANG Su.Effects of Betaine on Slaughter Performance and Muscle Quality of Yellow Feather Broilers[J].Acta Zoonutrimenta Sinica,2022,34(2):897-907. |
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| Authors: | SONG Yuduo LIU Qiang YANG Mi CHEN Rui ZHOU Yanmin ZHOU Guobo YANG Wenwu ZHUANG Su |
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| Institution: | (College of Animal Science and Technology,Nanjing Agricultural University,Nanjing 210095,China;Yixing Skystone Feed Co.,Ltd.,Yixing 214200,China) |
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| Abstract: | This experiment was conducted to investigate the effects of betaine on slaughter performance and muscle quality of yellow feather broilers. A total of 400 one-day-old female yellow feather broilers were randomly divided into 5 groups with 8 replicates per group and 10 birds per replicate. Broilers in the control group were fed a basal diet,and the others in experimental groups were fed basal diets supplemented with 125,250,500 and 1 000 mg/kg betaine,respectively. The experiment lasted for 74 days. The results showed as follows:1)dietary betaine significantly decreased the subcutaneous fat thickness and intramuscular fat width(linear,P<0.05),but had no significant effects on the dressed percentage and percentage of eviscerated yield(P >0.05). 2)Dietary betaine significantly decreased the drip loss at 24 and 48 h in breast muscle(linear and quadratic,P<0.05),and the drip loss at 24 and 48 h in breast muscle group of experimental groups was significantly lower than that of the control group(P<0.05). Dietary betaine significantly increased the peak area ratio of immobilized water in breast muscle(linear,P<0.05),significantly decreased the peak time of immobilized water,peak time of free water,peak area of bound water and peak area ratio of bound water in breast muscle(linear,P<0.05),and the peak time of free water in breast muscle of 500 and 1 000 mg/kg betaine supplementation groups was significantly lower than that of the control group(P<0.05). 3)Dietary betaine significantly increased the breast muscle ether extract content(linear,P<0.05),and the breast muscle ether extract content of 1 000 mg/kg supplementation group was significantly higher than that of the control group(P<0.05). Dietary betaine significantly increased the contents of methionine,phenylalanine,tyrosine and histidine in breast muscle(linear,P<0.05). 4)Dietary betaine significantly increased the total antioxidant capacity(T-AOC)and glutathione(GSH)content in breast muscle(linear,P < 0. 05),and the breast muscle T-AOC of 500 and 1 000 mg/kg betaine supplementation groups was significantly higher than that of the control group(P<0.05). In conclusion,dietary betaine can reduce the body fat deposition,increase the content of ether extract and amino acids in breast muscle,enhance the water-holding capacity,immobilized water ratio and antioxidant capacity of breast muscle,ultimately improving the muscle quality of yellow feather broilers. In this experiment,the 1 000 mg/kg supplementation group has the best effect.Chinese Journal of Animal Nutrition,2022,34(2):897-907] |
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| Keywords: | betaine yellow feather broilers slaughter performance muscle quality moisture distribution antioxidant capacity |
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