3个鸽品系雏鸽体重、体尺和屠宰性能测定与比较

Measurement and comparison of body weight,body size and slaughter performance of three lines of squabs

为探讨雏鸽不同品系和性别之间体重、体尺和屠宰性能等的差异,本研究对3个鸽品系的相关指标进行了测定。试验选取28日龄D系、M系和T系雏鸽各60只,公母各半。结果显示,D系雏鸽在活重、屠体重、胫长、胫围、体斜长方面显著高于M系(P<0.05)。品系和性别对体尺和屠宰性能具有较大影响,但不同品系和不同性别雏鸽屠宰率、全净膛率和胸肌率等指标差异不显著(P>0.05),且屠宰率和全净膛率分别达到80%和60%以上。体重、体尺和屠宰性能相关性分析表明,胸深、胸宽、胫围等体尺性状与活重、全净膛重和胸肌重等屠宰性能具有较强的相关性。综上,3个鸽品系均具有较好的肉用性能,公鸽体尺性状和屠宰性能指标整体上优于母鸽,体尺和屠宰性能具有较强的相关性,对这3个鸽品系屠宰性能的选育可以使用胸宽等体尺指标进行间接选择。

This experiment was aimed to explore the differences in body weight,body size,and slaughter performance among three pigeon lines of different genders.Measurements of related indices were conducted on three pigeon lines,namely D,M,and T,at the age of 28 days,with each line consisting of 60 individuals(30 males and 30 females).The results showed that the D line exhibited significantly higher values in live weight,dressed weight,tibia length,tibia circumference,and body oblique length compared with those of the M line(P<005).Both line and gender had a significant impact on body size and slaughter performance.However,there were no significant differences in the slaughter rate,evisceration rate,and breast muscle rate among different lines and genders(P>005).Moreover,the slaughter rate and evisceration rate were both above 80%and 60%,respectively,meeting the requirements for good meat production performance.The cor-relation analysis between the body weight,body size,and slaughter performance of the birds indicated a high correlation between body size traits,such as chest depth,chest width,tibia circumference,and slaughter performance indicators,including live weight,evisceration weight,and breast muscle weight.In summary,the body size and slaughter performance values of the male pigeons were higher than those of the female ones.The three lines all exhibited favorable meat production performance.Furthermore,there was a strong correlation between the body size and the slaughter performance of the pigeons,suggesting that chest width and other body size indicators could be used to predict the slaughter performance of pigeons and accelerate the breeding progress of the birds.