日粮添加混合发酵饲料对樱桃谷肉鸭生长性能、胴体品质和肌肉脂肪代谢的影响  

Effects of dietary supplementation with fermented mixed feeds on growth performance, meat quality and lipid metabolism in the pectoralis muscle of Cherry Valley ducks

作　　者：张艾珈 严敏 张延延 刘馨怡 林勇[3] 贾逸敏 ZHANG Aijia;YAN Min;ZHANG Yanyan;LIU Xinyi;LIN Yong;JIA Yimin(Key Laboratory of Animal Physiology and Biochemistry,Ministry of Agricultural and Rural Affairs/College of Veterinary Medicine,Nanjing Agricultural University,Nanjing 210095,China;Pei County Agricultural and Rural Bureau,Xuzhou 221600,China;Key Laboratory of Agricultural Engineering in the Middle and Lower Reaches of the Yangtze River,Ministry of Agricultural and Rural Affairs/Institute of Agricultural Facilities and Equipment,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;Jiangsu Collaborative Innovation Center of Quality and Safety Control of Meat Production and Processing,Nanjing 210095,China)

机构地区：[1]南京农业大学动物医学院/农业农村部生理生化重点实验室,江苏南京210095 [2]沛县农业农村局,江苏徐州221600 [3]江苏省农业科学院农业设施与装备研究所/农业农村部长江中下游设施农业工程重点实验室,江苏南京210014 [4]江苏省肉类生产与加工质量安全控制协同创新中心,江苏南京210095

出　　处：《畜牧与兽医》2022年第4期17-24,共8页Animal Husbandry & Veterinary Medicine

基　　金：国家重点研发计划项目(2018YFD0500402-2);江苏省苏北科技专项(XZ-SZ202014)。

摘　　要：为了探究在日粮中添加麸皮-玉米-豆粕混合发酵饲料对樱桃谷肉鸭生长,胸肌肉品质以及胸肌脂肪代谢的影响,试验选用720只1日龄雌雄各半的樱桃谷肉鸭,随机分为4组,每组6个重复,每个重复30只。对照组饲喂基础日粮,试验组在日粮中添加2.5%、5.0%和7.5%的混合发酵饲料(fermented mixture feed, FMF)。肉鸭采用两阶段饲喂,试验周期为42 d。试验结果表明:日粮添加FMF对肉鸭的生长性能和胴体屠宰率均无显著影响,但显著增加了2.5%和5%FMF组肉鸭宰后45 min胸肌的红度值(P<0.05)。相较于对照组,日粮中添加2.5%FMF显著增加了肉鸭胸肌肌纤维横截面积(P<0.05),但显著降低了MyHC-I的蛋白表达量(P<0.05)。此外,日粮中添加7.5%FMF显著上调了胸肌中甘油三酯水平(P<0.05),并且所有FMF组的FASN的蛋白表达量都显著上升(P<0.05),5%和7.5%FMF组胸肌中PNPLA2的蛋白水平也显著(P<0.05)上升。由此表明:日粮中添加2.5%的混合发酵饲料能显著改善肉鸭的肌肉品质,但并不影响肉鸭生长性能。To investigate the effects of fermented mixture feed on the growth performance, carcass quality and lipid metabolism in the pectoralis muscle of Cherry Valley ducks, 720 1-day-old Cherry Valley ducklings, half males and half females, were obtained and randomly divided into 4 groups with 6 replicates and 30 ducklings in each replicate. The control group was fed with normal diet, and the experimental groups were fed with normal diet supplemented with 2.5%, 5.0% and 7.5% fermented mixture feed(FMF), respectively. The ducklings were raised with a two-stage diet for 42 days. The results showed that,in general,no significant difference was made in the growth performance of the ducklings through dietary supplementation with FMF. Compared with the control group,the 2. 5% and 5% FMF groups significantly increased the redness value at 45 minutes after slaughter in their pectoralis muscle( P< 0. 05). In addition,dietary supplementation with 2. 5% FMF significantly increased the cross-sectional areas of myofibers in their pectoralis muscle( P< 0. 05),but significantly decreased the protein content of MyHC-I therein( P< 0. 05). Moreover,compared with the control group,the 7. 5% FMF group had a markedly higher level of triglyceride in their pectoralis muscle( P<0. 05);dietary supplementation with FMF significantly increased the protein contents of FASN in the muscle( P < 0. 05),and significantly enhanced the PNPLA2 protein level in the 5% and 7. 5% FMF groups( P <0. 05). Therefore,dietary supplementation with 2. 5% FMF improved the meat quality and enhanced the lipid synthesis in the pectoralis muscle of the ducklings,but exerted no significant effect on the growth performance of the ducks.

关 键 词：樱桃谷肉鸭 发酵饲料 胸肌 肌肉品质 脂肪代谢 

分 类 号：S815.5[农业科学—畜牧学]