0~70日龄伊犁鹅及其杂交鹅生长性能和体重体尺相关性的比较研究

Comparative Study on the Relationship between Growth Performance and Body Size of 0-70-day-old Yili Goose and Its Hybrid Offspring

探究伊犁鹅(Anser)公鹅与其杂交鹅公鹅(父本为伊犁鹅,母本为豁眼鹅)在生长性能、体尺性状上的差异,为伊犁鹅品种的杂交利用、肉用价值开发及早期选育提供参考依据。选取同批次孵化、健康状况良好、体重相近的0日龄伊犁鹅公鹅及其杂交鹅公鹅各75只,在相同条件下饲养70 d,按期测定其生长性能及体尺性状,并对相关指标进行相关性分析。在生长性能方面,在整个试验过程中,伊犁鹅公鹅的体重显著(P<0.05)或极显著(P<0.01)高于杂交鹅公鹅的体重。伊犁鹅公鹅的日增重在28、42和70日龄时,显著(P<0.05)或极显著(P<0.01)高于杂交鹅公鹅的日增重,在56日龄时,显著低于杂交鹅公鹅(P<0.05)。伊犁鹅公鹅的料重比在生长早期(0~28日龄)显著低于杂交鹅公鹅(P<0.05),在生长后期(42~70日龄)显著高于杂交鹅公鹅(P<0.05)。在体尺性状方面,伊犁鹅公鹅的绝大多数体尺性状的增长速度快于杂交鹅公鹅,并存在显著(P<0.05)或极显著(P<0.01)差异。在体重与体尺性状的相关性分析方面,伊犁鹅公鹅、杂交鹅公鹅分别在14日龄、28日龄后,其体重与各个体尺性状之间均存在显著(P<0.05)或极显著(P<0.01)相关。在生长性能方面,伊犁鹅公鹅的生长性能总体优于杂交鹅公鹅,伊犁鹅公鹅较杂交鹅公鹅提前1~2周达到3 kg的上市体重。伊犁鹅公鹅、杂交鹅公鹅的快速生长阶段分别在28~56日龄、42~56日龄。在体尺性状方面,伊犁鹅公鹅的大多数体尺性状的发育速度均快于杂交鹅公鹅。伊犁鹅公鹅14~28日龄的体斜长和半潜水长可以作为其体重早期选择的指标。

The experiment was conducted to explore the differences in growth performance and body size traits between male Anser and its hybrid goose(The male parent is Yili goose,the female parent is Huoyan goose),in order to provide a reference for the hybrid utilization,development of meat value and early breeding of Anser.The same batch of hatched,healthy,and similar weights of 0-day-old Yili goose male geese and 75 male hybrid geese were selected in this experiment.The geese were bred under the same conditions for 70 days,the growth performance and body size traits of geese were measured on schedule,and the correlation analysis of relevant indexes was conducted.In terms of growth performance,the body weight of male Anser was significantly(P<0.05)or extremely significantly higher(P<0.01)than that of male hybrid geese.The daily gain of male Anser was significantly(P<0.05)or extremely significantly higher(P<0.01)than that of hybrid geese at 28,42 and 70 days of age,and significantly lower(P<0.05)than that of hybrid geese at 56 days of age.The feed to weight ratio of male Anser was significantly lower(P<0.05)than that of hybrid geese in the early growth stage(0-28 days old)(P<0.05),and significantly higher(P<0.05)than that of hybrid geese in the late growth stage(42-70 days old).In terms of body size traits,the growth rate of most body size traits of Anser was faster than that of hybrid geese,and there were significant or extremely significant differences between them(P<0.05 or P<0.01).In terms of correlation analysis between body weight and body size traits,there were significant or extremely significant correlations between body weight and body size traits of male Anser and hybrid geese after 14 days and 28 days of age,respectively(P<0.05 or P<0.01).In terms of growth performance,the growth performance of male Anser was better than that of hybrid geese,and Anser reached the market weight of 3 kg 1-2 weeks earlier than that of hybrid geese.The rapid growth stages of male Anser and hybrid geese were 28-56 days old and 42-56 days old,respectively.In terms of body size traits,the development speed of most body size traits of Anser was faster than that of hybrid geese.The body length and semi diving length of male Anser at 14-28 days of age can be used as early selection indexes of body weight.