不同杂交组合仔鹅生长发育规律及屠宰性能的研究

本试验采用国家级水禽基因库(江苏泰州)提供的莱扬莱扬白鹅(LYLYB)、莱扬白鹅(LYB)、莱莱扬白鹅(LLYB) 3个杂交组合为研究对象,选用Logistic模型、Gompertz模型和Von Bertallanffy模型拟合生长曲线对3种杂交组合鹅生长发育规律进行系统的研究。结果表明,3个杂交组合3种模型的拟合度均高达0.99以上,都能很好地拟合仔鹅生长过程,以Logistic模型拟合度最高,根据实际饲养资料确定Logistic模型是拟合仔鹅生长的最优模型;以此模型估计3个组合鹅体重和体尺的最大值发现,LLYB鹅的生长速度最快,体重和体尺的增长均快于LYLYB、LYB鹅;测定3个杂交组合公母的屠宰性能发现,屠宰率均在83%以上,全净膛率均在68%以上,其中LYB母鹅的屠宰率和半净膛率显著低于公鹅,LLYB公母鹅的腿肌率均显著高于其他两个组合,LYB公鹅的腿肌率显著高于LYLYB公鹅。因此,3种杂交组合中,莱莱扬白鹅为最佳杂交组合,生长发育最快,暂命名为苏牧白鹅。

Study on Growth Development Law and Slaughter Performance in Different Crossbreed Geese

Three crossbreed geese(LYLTB,LYB,LLYB) were selected to systematically study the growth development law and slaughter performance with Logistic model,Gompertz model and Von Bertallanffy model.All the geese were provided by National Waterfowl Germplasm Resource Pool(Jiangsu Taizhou).The results showed that the three models fitted well the growth-development of Sumu white geese.The fitting rates were over 0.99,the rate of Logistic model was the highest,but no significant difference between the models.According to the actual raising materials,the Logistic model was the best model to fit the growth of Sumu white geese,and could be used to establish the growth standard during the production.The growth rate of LLYB geese was the fastest,the body weight and measurement were faster than LYLYB and LYB geese according Logistic model estimated values.The meat performance of three hybrid combinations were all good,the slaughtered rates were over 83%,the eviscerated were rates over 68%.So LLYB geese was the best hybrid combination among three combinations,and growth rate was fastest(temporarily name: Sumu white geese).