摘要
本试验旨在研究不同放养密度对雪峰乌骨鸡生长性能、屠宰性能、血清生化以及免疫指标的影响。选用健康的35日龄、体重一致的脱温雪峰乌骨鸡母鸡苗1620只,随机分为3个放养密度组,分别为低密度组(LSD组,60只/667 m^(2))、中密度组(MSD组,120只/667 m^(2))和高密度组(HSD组,180只/667 m^(2)),每组6个重复(林地面积500 m^(2)),LSD组每个重复45只,MSD组每个重复90只,HSD组每个重复135只。预试期7 d,正试期78 d。结果显示:1)LSD组雪峰乌骨鸡的平均日增重和料重比显著高于MSD组和HSD组(P<0.05)。2)LSD组宰前活重和屠体重均显著高于MSD组和HSD组(P<0.05)。3)LSD组血清中谷草转氨酶活性显著低于HSD组(P<0.05),LSD组和MSD组血清中碱性磷酸酶活性显著高于HSD组(P<0.05);LSD组血清中甘油三酯含量显著高于HSD组(P<0.05);HSD组血清中超氧化物歧化酶活性显著低于LSD组和MSD组(P<0.05)。4)HSD组血清中免疫球蛋白G、免疫球蛋白M、白细胞介素-2、白细胞介素-6和肿瘤坏死因子-α含量显著高于LSD组和MSD组(P<0.05),MSD组血清中免疫球蛋白A含量显著高于LSD组和HSD组(P<0.05)。由此可见,放养密度为60只/667 m^(2)时能有效提高雪峰乌骨鸡的生长性能,同时保证有较好的屠宰性能、抗氧化能力及免疫力。
This experiment was conducted to investigate the effects of stocking density on growth performance,slaughter performance,serum biochemical and immune indexes of Xuefeng black bone chickens.A total of 1620 healthy 35-day-old Xuefeng black bone chickens were randomly assigned into 3 groups,low stocking density group(LSD group,60 birds/667 m^(2)),medium stocking density group(MSD group,120 birds/667 m^(2))and high stocking density group(HSD group,180 birds/667 m^(2)).The pre-trial period lasted for 7 days and the experimental period lasted for 78 days.The results showed as follows:1)the average daily weight gain and feed/gain of Xuefeng black bone chickens in the LSD group were significantly higher than those in the MSD and HSD groups(P<0.05).2)Live weight before slaughter,dressings weight in the LSD group were significantly higher than those in the MSD and HSD groups(P<0.05).3)In serum,aspartate aminotransferase activity in the LSD group was significantly lower than that in the HSD groups(P<0.05),alkaline phosphatase activity in the LSD and MSD groups was significantly higher than that in the HSD group(P<0.05);triglyceride content in the LSD group was significantly higher than that in the HSD group(P<0.05);superoxide dismutase activity in the HSD group was significantly lower than that in the LSD and MSD groups(P<0.05).4)In serum,the contents of immunoglobulin G,immunoglobulin M,interleukin-2,interleukin-6,and tumor necrosis factor-αin the HSD group were significantly higher than those in the LSD and MSD groups(P<0.05),and the content of immunoglobulin A in the MSD group was significantly higher than that in the LSD and HSD groups(P<0.05).In conclusion,the stocking density of 60 birds/667 m^(2) can effectively improve the growth performance of Xuefeng black bone chickens,and at the same time ensure better slaughter performance,antioxidant capacity and immunity.
作者
王俣博
谢静
姚亚铃
曲湘勇
郭松长
李梅春
刘加兴
刘志铁
贺长青
WANG Yubo;XIE Jing;YAO Yaling;QU Xiangyong;GUO Songchang;LI Meichun;LIU Jiaxing;LIU Zhitie;HE Changqing(College of Animal Science and Technology,Hunan Agricultural University,Changsha 410128,China;Animal Husbandry and Aquatic Products Bureau of Huaihua City,Huaihua 418200,China;Hunan Hongjiang Yunfeifeng Agriculture Co.,Ltd.,Huaihua 418200,China;Hunan Bofu Circular Agricultural Co.,Ltd.,Yueyang 414500,China;Hunan Wenmeizi Modern Agricultural Science and Technology Ecological Park Co.,Ltd.,Hengyang 421001,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2024年第7期4329-4338,共10页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
乌骨鸡林下无抗养殖技术研发及示范项目
湖南省科技厅创新平台与人才计划项目(2022NK4156)。
关键词
雪峰乌骨鸡
放养密度
生长性能
屠宰性能
血清指标
Xuefeng black bone chickens
stocking density
growth performance
slaughter performance
serum indexes动物营养学报2024,36(7):-
