飞鸭体尺与屠宰性能测定及其相关性分析

试验测定了8周龄天农飞鸭的体尺与屠宰性能，分析了各指标间的相关性。结果表明，半潜水长、胫长和宰前体重在公母鸭之间存在极显著差异(P＜0.01)，体斜长、龙骨长和胫围在公母鸭之间存在显著差异(P＜0.05)；屠体重、半净膛重、全净膛重、腿肌重在公母鸭之间存在极显著差异(P＜0.01)，瘦肉重在公母鸭之间存在显著差异(P＜0.05)。宰前体重与体尺各指标（胸宽除外）间存在着极显著相关(P＜0.01)；试验所测的9个体尺指标均与宰前体重、屠体重、半净膛重、全净膛重之间存在显著(P＜0.05)或极显著(P＜0.01)正相关；宰前体重、屠体重、半净膛重、全净膛重、胸肌重、腿肌重和瘦肉重相互之间呈强相关(P＜0.01)，但体重和屠体重却与以上其它重量性状的百分率指标间无明显相关(P＞0.05)。

Measurement of the Body Size and Carcass Traits of Fei Ducks and Analysis on the Correlations between Different Traits

The body size and carcass traits of 8-week-old Tiannong Fei ducks were measured and the correlations between different traits were analysed. The results showed that there were very significant differences between the male and female ducks for half diving depth, shank length and body weight (P＜0.01), significant differences for body slope length, fossil bone length and shank circumference (P＜0.05); and there were very significant differences between the male and female ducks for carcass weight, half eviscerated weight, eviscerated weight and leg muscle weight (P＜0.01), significant differences for lean meat weight (P＜0.05). Highly significant correlations existed between body weight and different body sizes (except breast width) (P＜0.01); highly significant or significant correlations existed between body sizes in the experiment and slaughter weight, carcass weight, half eviscerated weight and eviscerated weight (P＜0.05 or P＜0.01); and there were highly significant correlations among body weight, carcass weight, half eviscerated weight, eviscerated weight, breast muscle weight, leg muscle weight and lean meat weight (P＜0.01), but there was no correlations between percentages of above weight traits and body weight, carcass weight (P＞0.05).