摘要
试验以慢速型(wod168)、中速型(wod178)和快速型(wod188和爱拔益佳AA)肉鸡为素材,测定其在2周龄至7周龄时跖骨、胫骨和股骨的长度和重量,探明不同生长速度白羽肉鸡跖骨、胫骨和股骨长度和重量的生长发育规律。结果表明,3种长速肉鸡骨骼性状在2周龄至7周龄基本呈现随周龄增加而增加的趋势。wod188的跖骨长和胫骨长在3周龄时生长强度最大,相对生长系数为36.47%和25.11%;wod178股骨长、胫骨重和股骨重在3周龄时生长强度最大,对应的相对生长系数分别是21.49%、71.32%和74.49%;wod168的跖骨重在4周龄时生长强度最大,相对生长系数为81.66%。7周龄时,wod168和wod178的跖骨重均极显著低于wod188和AA(P<0.01);wod178胫骨重极显著高于wod168,极显著低于wod188和AA(P<0.01);wod168的股骨重均极显著低于其它3个品种(P<0.01),其它3个品种股骨重差异不显著(P>0.05)。4个品种骨骼的生长发育基本在3周龄时强度达到最大,生长发育速度最快,含有蛋鸡血缘比例越高,其骨骼重量越轻。
In order to explore the growth and development of the length and weight among metatarsal,tibia and femur of white feather broilers with different growth rates,the broilers of slow growth rate(wod168),medium growth rate(wod178)and fast growth rate(wod188 and AA)were taken as the materials to determine the length and weight of their metatarsal,tibia and femur from 2 weeks to 7 weeks.The results showed that the bone traits increased with age from 2 weeks to 7 weeks among all the broilers.The highest growth intensity of metatarsal length,tibial length were observed in wod188 at 3 weeks,with corresponding relative growth coefficients of 36.47%and 25.11%,the greatest growth intensity of femur length,tibial weight and femur weight were in wod178 at 3-week age,and the corresponding relative growth coefficients were 21.49%,71.32%and 74.49%respectively.The greatest growth intensity of metatarsal weight was in wod168 at 4 weeks of age,and the corresponding relative growth coefficients was 81.66%.At 7 weeks of age,the metatarsal weight of wod168 and wod178 were extremely lower than that of wod188 and AA(P<0.01).The tibial weight of wod178 was remarkably higher than that of wod168,and extremely lower than that of wod188 and AA(P<0.01).The femoral weight of wod168 was significantly lower than the others(P<0.01),there was no significant difference in the other three varieties(P>0.05).The bone growth and development of the four breeds basically reached the maximum at 3 weeks of age,the growth and development rate was the fastest,and broilers with higher blood ties of laying hens have lighter bone weight.
作者
马猛
王克华
曲亮
窦套存
郭军
王星果
胡玉萍
卢建
MA Meng;WANG Kehua;QU Liang;DOU Taocun;GUO Jun;WANG Xingguo;HU Yuping;LU Jian(Jiangsu Institute of Poultry Science,Yangzhou,Jiangsu 225003,China)
出处
《家畜生态学报》
北大核心
2024年第3期34-38,74,共6页
Journal of Domestic Animal Ecology
基金
现代农业产业技术体系建设专项资金(CARS-40-K01)
江苏省现代农机装备与技术示范推广项目(NJ2021-51)。
关键词
肉鸡
生长速度
骨骼
生长
发育
broiler
growth rate
bone
growth
development
