摘要
为了解120日龄(即上市日龄)狮头鹅体质量与体尺间关系,试验测定了 501只120日龄狮头鹅(公255只、母246只)的体质量和体尺指标,并进行相关与回归分析.结果发现狮头鹅公鹅体质量和体尺指标均极显著高于母鹅(P＜0.01),体质量、体尺性状之间均呈现显著正相关(P＜0.01).狮头鹅公鹅利用体尺性状预测体质量的回归模型为 Y=0.471*X2+0.192*X6+0.187*X7+0.022*X9+0.042*X10+0.055*X11+0.475*X12-10.434,其中Y为体质量、X2为胸宽、X6为骨盆宽、X7为颈围、X9为半潜水长、X10为体斜长、X11为龙骨长和 X12为胫围.母鹅回归模型为 Y=0.384*X2+0.031*X4+0.297*X6+0.226*X7+0.094*X10+0.223*X12-12.227,其中Y为体质量、X2为胸宽、X4为胸角、X6为骨盆宽、X7为颈围、X10为体斜长和X12为胫围.本研究为后续开展狮头鹅品种资源保护和选育提供重要参考.
Abstract
In order to study the relationship between body weight and body measurements of 120-day-old Lion-head geese,a total of 501(255 males and 246 females)geese were measured,and the correlation and regression analysis were carried out.The results showed that the body weight and body measurements of male geese were significantly higher than those of female geese(P＜0.01).There were significantly positive correlations between body weight and body measurements(P＜0.01).The regression model of predicting body weight by using body measurement traits for male Lion-head geese was Y=0.471X2+0.192X6+0.187X7+0.022X9+0.042X10+0.055X11+0.475X12-10.434,where Y was body weight,X2 was chest width,X6 was pelvic width,X7 was neck circumference,X9 was half-diving length,X10 was body slant length,X11 was keel length and X12was tibia circumference.The regression model for female geese was Y=0.384X2+0.031X4+0.297X6+0.226X7+0.094X10+0.223X12-12.227,where Y was body weight,X2 was chest width,X4 was chest Angle,X6 was pelvic width,X7 was neck circumference,X10 was body oblique length,and X12 was tibia circumference.Our results will provide important reference for the conservation and breeding of Lion-head geese.
基金项目
广东省重点领域研发计划(2020B020222003)
广东省现代农业水禽产业技术体系创新团队项目(2022KJ137)
维普
万方数据