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雏鸡的选育及饲养管理
雏鸡的选育及饲养管理
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(一)选购优质雏鸡
1、优质雏鸡应该具备的特性
(1) 鸡种生产性能高。
(2) 马立克氏病疫苗接种确实有效。
(3) 对一些重要疫病,具有较高、较一致的母源抗体;这能避免幼雏期的疫病感染,也便于适时的免疫。
(4) 体重大小比较一致,最好是来自同一日龄的一个种鸡群,因而母源抗体比较整齐,也便于管理,一般体重应该在34克以上。
(5) 体力充沛、活泼好动、反应敏捷、叫声脆响,抓在手中时挣扎蹬腿有力。
(6) 绒毛整洁、有光泽,腹部大小适中,脐带愈合良好。
(7) 脚趾圆润,无存放时间过长、干瘪脱水的迹象。
(8) 一周之内因细菌感染等造成的死亡率在0.5%以下。
2、应从种鸡场得到的信息和承诺;为顺利地培育好雏鸡应尽可能向孵化厂了解以下情况:
(1) 了解出雏时间和存放环境。如出雏后存放时间过长、温度过低、通风不良,会严重影响雏鸡质量。
(2) 雏鸡接种疫苗情况。
(3) 这批种蛋的受精率、孵化率、健雏率,这些指标越高,雏鸡质量越好。
(4) 种鸡的日龄、群体大小、种鸡的产蛋率,种鸡盛产期的后代体质好。
(5) 种鸡的免疫程序,可推测雏鸡母源抗体水平。
(6) 鸡场经常使用什么药品。
(7) 有可能的话,再了解一下种鸡群曾发生过什么疾病。

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