摘要
本试验旨在研究育雏阶段(1~42 d)补充复合维生素纳米乳对育成期(42~84 d)蛋鸡生长性能、骨骼发育的持续影响.试验选取1 d蛋鸡192只,随机分为4组,每组3个重复,每个重复16只鸡.在基础日粮相同情况下,将复合维生素纳米乳稀释6250倍(低剂量组)、5555倍(中剂量组)、5000倍(高剂量组)饲喂,设立空白对照组.结果表明,在育雏阶段,中剂量组平均日增重都显著高于对照组(P<0.05);在育成阶段,中剂量组和高剂量组平均日增重都显著高于对照组(P<0.05);在育雏期间添加高剂量的复合维生素纳米乳显著提高了胫骨的钙含量、股骨的磷含量(P<0.05);高剂量组的跖骨重量、脱脂重、磷含量显著高于对照组(P<0.05).低、中、高剂量组半净膛率和全净膛率均显著提高(P<0.05);中剂量组、高剂量组的胸肌和腿肌失水率显著低于对照组(P<0.05),高剂量组腿肌的pH值显著低于对照组(P<0.05),低剂量组胸肌的红度显著低于对照组(P<0.05).由此可见,在蛋鸡育雏阶段添加复合维生素纳米乳能够促进蛋鸡的生长和骨骼发育,提高屠宰性能,在家禽养殖中具有广泛的应用前景.
This experiment aims to investigate the continuous effects of supplementing a composite vitamin nanoemulsion on growth performance and bone development during both the brooding stage(1~42 days)and grower period(42~84 days)of laying hens.A total of 192(1-day-old)laying hens were selected and randomly divided into 4 experimental groups,with each group having three replicates and 16 chickens per replicate.The chickens in the experimental groups were fed basal diet(control),basal diet diluted 6250 times with vitamin nanoemulsion(low-dose group),basal diet diluted 5555 times with vitamin nanoemulsion(medium-dose group),and basal diet diluted 5000 times with vitamin nanoemulsion(high-dose group).The results showed that during the brooding stage,the average daily weight gain of the medium-dose group was significantly higher than that of the control group(P<0.05).During the rearing stage,the average daily weight gain of both the medium and the high-dose groups was significantly higher than that of the control group(P<0.05).Further,it was observed that during the brooding period,the calcium content in the tibia and the phosphorus content in the femur increased significantly in the high-dose group(P<0.05).The weight,defatted weight,and phosphorus content of the metatarsus in the high-dose group were significantly higher than those in the control group(P<0.05).The semi-clean evisceration rate and full clean evisceration rate were significantly increased in the low-dose,medium-dose,and high-dose groups(P<0.05).The dehydration rates of the chest and leg muscles were significantly lower in the medium-dose and high-dose groups compared to the control group(P<0.05).The pH value of the leg muscles in the high-dose group was significantly lower than that in the control group(P<0.05),whereas the redness of the chest muscles in the low-dose group was significantly lower than that in the control group(P<0.05).Taken together,the addition of complex vitamin nanoemulsion during the brooding stage can promote the growth,slaughter performance and skeletal development of laying hens,and have broad application prospects in poultry farming.
作者
刘洋
舒刚
王一诺
牛佳佳
孙鑫
田尧夫
张姚
刘指赫
赵小玲
冯静
LIU Yang;SHU Gang;WANG Yi-Nuo;NIU Jia-Jia;SUN Xin;TIAN Yao-Fu;ZHANG Yao;LIU Zhi-He;ZHAO Xiao-Ling;FENG Jing(Key Laboratory of Livestock and Poultry Multi-Omics,Ministry of Agriculture and Rural Affairs,Sichuan Agricultural University,Chengdu 611134,China;College of Veterinary Medicine,Sichuan Agricultural University,Chengdu 611134,China;Tibet Academy of Agricultural and Animal Science,Lhasa 850004,China;Key Laboratory of Animal Genetics and Breeding in the Qinghai Tibet Plateau,Ministry of Agriculture and Rural Affairs,Lhasa 850004,China)
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第4期302-309,共8页
Journal of Sichuan University(Natural Science Edition)
基金
国家重点研发计划项目(2022YFD1600900)
西藏自治区科技计划项目(XZ202101ZY0002N)
国家蛋鸡产业技术体系(CARS-40-S19)
四川省科技计划项目(2022NZZJ0009)。
关键词
蛋鸡
复合维生素纳米乳
生长性能
Laying hen
Composite vitamin nanoemulsion
Growth performance
