神丹6号绿壳蛋鸡和海兰褐蛋鸡产蛋期腹脂和血清脂代谢指标的比较研究  

Abdominal fat and serum lipid metabolism of Shendan No6 green shell egg layer and Hy-line brown egg layer at laying stage

作　　者：王星果[1] 王克华[1] 郭军[1] 胡玉萍[1] 窦套存[1] 卢建[1] 曲亮[1] WANG Xingguo;WANG Kehua;GUO Jun;HU Yuping;DOU Taocun;LU Jian;QU Liang(Jiangsu Institute of Poultry Science/Jiangsu Key Lab of Poultry Genetics and Breeding,Yangzhou 225125,China)

机构地区：[1]江苏省家禽科学研究所/江苏省家禽遗传育种重点实验室,江苏扬州225125

出　　处：《畜牧与兽医》2024年第5期15-22,共8页Animal Husbandry & Veterinary Medicine

基　　金：现代农业产业技术体系建设专项资金(CARS-40-K01);江苏省种业振兴揭榜挂帅项目(JBGS[2021]104);扬州市科技计划项目(YZ2021030)。

摘　　要：旨在比较神丹6号绿壳蛋鸡和海兰褐蛋鸡产蛋期腹脂和血脂代谢情况,为神丹6号绿壳蛋鸡的产蛋期饲养管理和营养调控提供理论依据。神丹6号绿壳蛋鸡和海兰褐蛋鸡19周龄商品代鸡,饲养至60周龄,19~28周龄每周采血一次,29~40周龄每2周采血一次,41~60周龄每4周采血一次,测量血清中脂质代谢相关生化指标,进行差异分析和相关性分析。结果显示:随着周龄增长,神丹6号绿壳蛋鸡腹脂率和肝脏指数变化不显著;血清甘油三酯(TG)、游离脂肪酸(FFA)和高密度脂蛋白(HDL)含量先升高后降低,之后变化不显著或波动变化;低密度脂蛋白(LDL)先降低后升高,之后变化不显著;总胆固醇(TC)含量整体降低;极低密度脂蛋白y(VLDLy)和卵黄蛋白原(VTG)含量前期变化不显著,之后波动变化。随着周龄增长,海兰褐蛋鸡血清HDL、LDL、VLDLy和VTG含量变化与神丹6号绿壳蛋鸡趋势略有差异,其他指标趋势基本一致。与海兰褐蛋鸡相比,神丹6号绿壳蛋鸡血清FFA和VTG含量前期较低,后期均与其含量接近,TG、TC、HDL、LDL和VLDLy含量则整体相近。产蛋前期(19周龄)、高峰期(28周龄)与后期(52周龄)比较分析结果显示,脂代谢指标中TG和FFA在神丹6号绿壳蛋鸡产蛋高峰期显著高于前期和后期(P<0.05),HDL和VTG均是后期显著低于前期(P<0.05)。综合分析表明,神丹6号绿壳蛋鸡产蛋期血脂代谢稳定,与海兰褐蛋鸡相比前期慢,后期相当。In the current study,the abdominal fat and serum lipid metabolism of Shendan No 6 green shell egg layer and Hy-line brown egg layer at laying stage were compared in order to provide a theoretical basis for the feeding and management at laying stage and nutrient reg-ulation of Shendan No 6 green shell egg layer.The Shendan No 6 green shell egg layers and the Hy-line brown egg layers of 19 weeks old were raised to 60 weeks of age.During the treatment,blood samples were collected from the hens every week in their 19-28 weeks of age,every 2 weeks in their 29-40 weeks of age,and every 4 weeks in their 41-60 weeks of age.Then,serum lipid metabolic indices of the birds were measured,and the variance and correlation of the indices were analyzed.The results showed that,from 19 to 60 weeks of age,the per-centage of abdominal fat and liver index of the Shendan No 6 green shell egg layers generally remained unchanged;their serum triglyceride(TG),free fatty acids(FFA)and high-density lipoprotein(HDL)levels firstly increased and then decreased,and then remained un-changed or fluctuated;their low-density lipoprotein(LDL)level decreased first and then increased,and then remained unchanged;their to-tal cholesterol(TC)level decreased overall;and their yolk-targeted very-low density lipoprotein(VLDLy)and vitellogenin(VTG)levels remained unchanged first and then fluctuated.From 19 to 60 weeks of age,the trends of the serum HDL,LDL,VLDLy and VTG levels of the Hy-line brown egg layers were slightly different from those of the Shendan No 6 green shell egg layers,the trends of the other indices were generally the same.Compared with those of the Hy-line brown egg layers,the serum FFA and VTG levels of the Shendan No 6 green shell egg layers were lower early,and then they were almost the same.Their TG,TC,HDL,LDL and VLDLy levels were almost the same with those of the Hy-line brown egg layers.The comparative analysis of the early(19 weeks of age),peak(28 weeks of age)and late stages(52 weeks of age)showed that,in the lipid metabolic indice

关 键 词：神丹6号绿壳蛋鸡 产蛋期 血清 脂代谢指标 

分 类 号：S831[农业科学—畜牧学]