摘要
将540只4周龄祖代固始鸡放养于一山地果园饲养至18周龄，利用其体重与体型参数的实测数据，讨论分析了放养条件下固始鸡的生长发育情况。结果表明：放养条件下祖代固始鸡4～10周龄以胫长、体斜长和胸骨长发育为主，10～18周龄以胸宽、胸深和骨盆发育为主；放养期体重增长缓慢；与舍饲条件相比，体重和骨骼生长均存在减缓和延迟现象。并给出了部分体型参数对日龄的拟合回归方程。
540 4-weeks-old ancestral Gushi chickens were reared freely in the mountain. The results of chickens the live boby weight and phenotypic traits showed that shank length, body length, and breastbone were fast during 4-10 weeks,chest width,chest depth and pelvis width are mainly growed at 10-18 weeks. The best change curves of phenotypic traits of Gushi chickens is established and standard to estimate the live boby weight and shank length growth for Gushi chickens were constructed.
出处
《西北农业学报》
CAS
CSCD
北大核心
2006年第2期17-21,共5页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国家"863"资助项目(2002AA242021)
河南省重大科技攻关项目(0222010900
0322010600)
河南省高校杰出科研人才创新工程项目(2000KYCX005)
