摘要
为研究超长产蛋周期下面临的中后期产蛋性能及蛋品质下降等问题,试验以北京中农榜样蛋鸡育种有限责任公司两个矮小型纯系蛋鸡(记为A系和B系)为素材,对80周龄累计产蛋量和36周龄、66周龄和80周龄蛋重(EW)、蛋形指数(ESI)、蛋壳强度(ESS)、蛋壳厚度(EST)进行关联性分析。以80周龄产蛋量的“平均值±1/2标准差”为标准,将A系和B系各分为3组。结果显示:A、B两个纯系蛋鸡80周龄ESI、EW均显著高于36周龄和66周龄ESI、EW(P<0.05),80周龄ESS、EST均显著低于36周龄和66周龄(P<0.05);80周龄产蛋量较高组鸡群的66周龄、80周龄EW均显著小于80周龄产蛋量较低组鸡群(P<0.05);A系80周龄产蛋量与36周龄EW、80周龄EW、80周龄ESS显著负相关(P<0.05),B系80周龄产蛋量与66周龄EW、80周龄EW、80周龄ESS呈显著负相关(P<0.05)。综上,矮小型A、B纯系80周龄产蛋量与36周龄、66周龄、80周龄蛋重、蛋壳强度及主要蛋品质指标存在一定负相关,但相关系数较低。在实际育种中,通过世代选择提升中后期产蛋量的同时,需考虑前期蛋重和蛋壳强度等蛋品质的选育和维持。
This paper aims to study the problems of laying performance and egg quality decline in the middle and late stages under the long laying cycle,two dwarf pure line laying hens of Beijing Zhongnongbangyang Egg-type Chicken Breeding Co.,Ltd.(named as line A and line B)were used as materials,and the correlation between the accumulated laying number at 80 weeks of age and the egg weight,egg quality at 36,66 and 80 weeks of age was analyzed.According to the"average 1/2 standard devia⁃tion"of egg number at 80 weeks of age,the A line and the B line were divided into three groups.The results showed that the egg shape index(ESI)and egg weight(EW)of the two pure lines A and B were increased,while the eggshell strength(ESS)decreased with the increase of egg-laying weeks.The results showed that ESI and EW of A and B pure line layers at 80 weeks of age were significantly higher than those at 36 and 66 weeks of age(P<0.05),while ESS and EST at 80 weeks of age were significantly lower than those at 36 and 66 weeks of age(P<0.05).EW of layers at 66 and 80 weeks of age in higher egg production group were signif⁃icantly lower than those in lower egg production group.The egg production of A pure line at 80 weeks of age was negatively corre⁃lated with EW at 36 weeks of age,EW at 80 weeks of age and ESS at 80 weeks of age(P<0.05),while that of B pure line at 80 weeks of age was negatively correlated with EW at 66 weeks of age,EW at 80 weeks of age and ESS at 80 weeks of age(P<0.05).It’s indicated that the egg production of dwar A and B pure lines at 80 weeks of age was negatively correlated with egg weight,eggshell strength and main egg quality indicators at 36,66 and 80 weeks of age,but the correlation coefficients were low.In actu⁃al breeding,the breeding and maintenance of egg quality such as egg weight and eggshell strength in the early stage should be considered when improving the egg production in the middle and late stage through generation selection.
作者
毛智琼
徐桂云
全季康
刘兴利
马国明
郑传威
牛山
李春鹏
张航
MAO Zhiqiong;XU Guiyun;QUAN Jikang;LIU Xingli;MA Guoming;ZHENG Chuanwei;NIU Shan;LI Chunpeng;ZHANG Hang(Beinongda Technology Co.,Ltd.,Beijing 100083;College of Animal Science and Technology,China Agricultural University,Beijing 100193)
出处
《中国家禽》
北大核心
2023年第6期24-29,共6页
China Poultry
基金
北京市种质创制和品种选育联合攻关项目(G20220628005)。
关键词
矮小型蛋鸡
产蛋量
蛋形指数
蛋重
蛋壳强度
蛋壳厚度
相关性分析
dwarf laying hens
egg production
egg shape index
egg weight
eggshell strength
eggshell thickness
correla⁃tion analysis
