高产蛋鸭配套系的选育

从福建龙岩蛋鸭原种场选择7个蛋鸭品种(品系)S1、S2、S3、J、P、F、K,组建5组不同的三系杂交配套组合:J♂×(F♂×S1♀)、P♂×(F♂×S3♀)、F♂×(P♂×S2♀)、F♂×(K♂×S2♀)、F♂×(P♂×S3♀).5个配套系商品代经500日饲养试验测定,筛选出生产性能最优的2个配套系为青壳蛋系J♂×(F♂×S1♀)、白壳蛋系F♂×(P♂×S3♀).青壳蛋系的产蛋率达50%时,平均日龄(118±2.45)d,平均体重(1595.6±22.5)g,500日龄的产蛋数、总蛋重、蛋重、料蛋比分别为(330.6±4.29)枚、(22.69±0.21)kg、(72.50±0.20)g、(2.86±0.03)∶1;白壳蛋系的产蛋率达50%时,平均日龄(114.7±1.25)d,平均体重(1526.6±12.31)g,500日龄的产蛋数、总蛋重、蛋重、料蛋比分别为(335.29±1.8)枚、(23.22±0.17)kg、(71.36±0.05)g、(2.77±0.01)∶1.可见,2个配套系的生产性能均达国内领先水平,具有推广应用价值.

High-yield commercial-lines with crossbreeding of laying duck species

Seven laying-duck species or strains were selected from laying-duck species population resources in Longyan,Fujian Province to develop multiplicative-strain with crossbreeding.5 multiplicative-strains of three-line hybrid were established.They were A strain,J male×(F male×S1 female);B strain,P male×(F male×S3 female);C strain,F male×(P male×S2 female);D strain,F male×(K male×S2 female) and E strain,F male×(P male×S3 female).Data were recorded from one-day old to 500-day old.The results showed that A strain(green-shell egg line) and E strain(white shell egg line) had better production performance than others.When laying rate of A strain(green-shell egg line) came up to 50%,the average age was(118±2.45) d and average body weight was(1595.6±22.5) g.In the 500 days of age,(330.6±4.29) eggs were obtained,total weight of eggs was(22.69±0.21) kg,the weight of eggs was(72.50±0.20) g and feed efficiency was(1∶2.86±0.03).When laying rate of E strain(white shell egg line) came up to 50%,the average age was(114.7±1.25) d and average body weight was(1526.6±12.31) g.In the 500 days of age,(335.29±1.8) eggs are obtained,total weight of eggs was(23.22±0.17) kg,the weight of eggs was(71.36±0.05) g and feed efficiency is(1∶2.77±0.01).Both A strain and E strain could be disseminated because of leading in the production performance of other laying-duck species or strains.