【摘要】 选罗曼、海兰 W- 36、海赛克斯、尼克、迪卡、伊莉莎等 6个白壳蛋鸡品种进行72周龄常规饲养对比测定 ,结果表明 ,6品种饲养期均达标准体重 ,品种间差异不明显 ;个体耗料均超过标准耗料 ,其中耗料量最大的为罗曼 ,最小的为海兰 W- 36;死亡率 0～ 2 0周龄平均为 5.6% ,2 1～ 72周龄平均为 7.3% ,其中尼克死亡率最高 ,伊莉莎最低 ;入舍鸡产蛋量平均为 2 75枚 ,罗曼最高达 2 88.6枚 ,尼克最低为 2 61 .6枚 ;饲养日产蛋量平均为 2 92 .6枚 ,罗曼最高为 30 2 .2枚 ,伊莉莎最低为 2 81 .6枚 ;蛋料比平均为 1∶ 2 .1 1 ,罗曼最高为 1∶ 2 .0 7,伊莉莎最低为 1∶ 2 .1 6。综合分析表明 ,我国西北地区目前优选饲养的白壳蛋鸡品种为罗曼、海兰 W- 36。更多还原

【Abstract】 Six different white shell layers,Lohmann,Hy-line W-36,Hisex,Neika,Dekalb and Eleza were used in present contrast feeding experiment.The results showed:All six strains reached standard boay weight.During feeding period there was no significant difference among six strains.Feed consumption per one exceeded standard feed consumption.The highest feed consumption was Lohmann and the lowest one was Hy-line W-36.Mortality from 0 to 20 weeks of age was 5.6% and 21-72 weeks of age was 7.3%.The highest mortality was Neika and the lowest one was Eleza.Average egg prodluction was 275 eggs for all birds used at initial test.The highest average egg production was 288.6 eggs for Lohmann and the lowest one was 261.6 eggs for Eleza.Average daily feeding egg production was 292.6 eggs.The highest daily feeding egg production was 302.2 eggs for Lohmann and the lowest one was 281.6 eggs for Eleza.Average feed conversion was 2.11.The highest feed conversion was 2.07 for Lohmann and the lowest one was 2.16 for Eleza.An overall assessment result showed:Lohmann and Hy-line W-36 were leading white shell layer strains in Northwest China.更多还原