摘要
为了评估"蛋鸡100周龄产500枚蛋"(简称"100-500计划")商业化实现的可能性,试验以京红1号蛋鸡配套系13世代纯系和商品代群体以及16世代纯系群体为研究对象,根据京红1号13世代商品代群体开产~80周龄的产蛋率进行曲线拟合并对81~100周龄产蛋率进行预测,通过商品代性能与纯系性能对比分析各性状杂种优势。结果表明:京红1号13世代商品代开产~100周龄累计饲养日产蛋数达到482枚,且存在6.27%左右的杂种优势率。京红1号16世代各纯系开产~100周龄累计饲养日产蛋数分别为485.7,425.9,475.3枚,基于纯系性能和产蛋数的杂种优势率预计京红1号16世代商品代100周龄累计饲养日产蛋数可达497.5枚,距离"100-500计划"仅有不到3枚蛋的差距。京红1号商品代的蛋壳强度、蛋壳颜色和哈氏单位呈现一定程度的下降,但维持在较高的水平。说明通过加强对蛋鸡中后期产蛋持续性和蛋品质性状选育改良,在商业化育种群体中实现蛋鸡"100-500计划"是可行的。
To evaluate the feasibility of "breeding for 500 eggs in 100 weeks"(abbreviated "100-500 plan") in commercial layer breeding, The 13 generation pure line, 13 generation commercial generation population and 16 generation pure line population Jing Brown 1 laying line were selected as experimental research subjects. According to the curve fitting of laying rate of the commercial generation population of 13 generations of Jing Brown 1 at age at egg-laying maturity-80 weeks of age, the laying rate from 81 to 100 weeks were predicted, and the heterosis of each character in late laying period was analyzed by comparing the performance of commercial generation and pure line. Results showed that the total daily egg production of 13 commercial generations of Jing Brown 1 reached 482 eggs in 100 weeks, and the heterosis rate was about 6.27%. The total egg daily production of 16 generations of Jing Brown 1 was 485.7, 425.9 and 475.3 at 100 weeks of age, respectively. Based on the heterosis rate of pure line performance and egg number, it was estimated that the total daily egg production of the 16 commercial generations of Jing Brown 1 in 100 weeks could reach 497.5 eggs, which was less than 3 eggs far from the "100-500 plan". The eggshell strength, eggshell color and Hauloy unit of Jing Brown 1 commercial generation decreased to a certain extent at the later stage of egg production, but remained at a high level. The results indicated that it was feasible to realize the "100-500 Plan" of laying hens in commercial breeding population by strengthening the selection and improvement of laying continuity and egg quality traits in the middle and late stage of laying hens.
作者
闫奕源
李光奇
李花妮
王彬
石凤英
吴桂琴
YAN Yiyuan;LI Guangqi;LI Huani;WANG Bin;SHI Fengying;WU Guiqin(Beijing Huadu Yukou Poultry Industry Co.Ltd.,Beijing 101206,China;Beijing Engineering Technology Research Center of Layers,Beijing 101206,China;Beijing Engineering Laboratory of Poultry Egg Quality Improvement and Safety Technology,Beijing 101206,China)
出处
《黑龙江畜牧兽医》
CAS
北大核心
2021年第20期42-46,共5页
Heilongjiang Animal Science And veterinary Medicine
基金
北京市科技计划项目(D171100007817001)。
