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金陵白鸭不同产蛋周龄蛋品质的变化规律研究

2020-12-21罗奕秋匡伟何宗亮姚远郗正林伍冠锁

安徽农业科学 2020年22期

罗奕秋 匡伟 何宗亮 姚远 郗正林 伍冠锁

摘要 [目的]研究金陵白鸭不同产蛋周龄蛋品质的变化规律及其与蛋品性状的相关性,为蛋品质选育提供依据。[方法]选取金陵白鸭不同产蛋周期(22、44和66周龄)各40个鸭蛋,进行蛋品质测定。 [结果]蛋重、蛋黄颜色与蛋壳强度在产蛋前期至中期伴随产蛋周龄的增加而显著增加;哈氏单位在产蛋全程伴随产蛋周龄的增加而显著减少;蛋壳颜色在产蛋全程伴随产蛋周龄的增加而有所增加。在产蛋全程,哈氏单位与蛋白高度呈极显著正相关(P<0.01),蛋壳强度与蛋壳厚度呈极显著正相关(P<0.01)。[结论] 金陵白鸭在产蛋中期蛋品质最好。在蛋品质培育中,可以通过提高蛋壳厚度来提高蛋壳强度。

关键词 金陵白鸭;产蛋周龄;蛋品质;相关性分析

中图分类号 S834文献标识码 A

文章编号 0517-6611(2020)22-0107-03

doi:10.3969/j.issn.0517-6611.2020.22.028

Study on the Change Laws of Egg Quality of Jinling White Duck at Different Egg Production Week-age

LUO Yi-qiu,KUANG Wei,HE Zong-liang et al (Nanjing Institute of Animal Husbandry and Poultry Science,Nanjing,Jiangsu 210036)

Abstract [Objective]To study the change laws of egg quality of Jinling white duck at different ages of egg production and its correlation with egg quality traits,and provide basis for the egg quality breeding.[Method]40 eggs of Jinling white duck at different stages of egg production (22,44 and 66 week-age) were selected to determine the egg quality traits.[Result]The egg weight,yolk color and eggshell strength increased significantly with the increase of the week-age of egg production from 22-week-age to 44 week-age.During the whole process of egg laying,Haugh unit decreased significantly with the increase of week-age.The eggshell color increased with the increase of week-age during the whole process of egg laying.There was an extremely significant positive correlation between Haugh unit and albumen height (P<0.01),and an extremely significant positive correlation between eggshell strength and eggshell thickness (P<0.01) during the whole egg laying process.[Conclusion]Jinling white duck has the best egg quality in the middle stage of egg production.During the breeding process of egg quality,the eggshell thickness can be increased by improving the eggshell strength.

Key words Jinling white duck;Egg production week-age;Egg quality;Correlation analysis

基金項目

江苏现代农业产业技术体系建设专项(JATS〔2019〕001)。

作者简介 罗奕秋(1992—),男,福建浦城人,助理畜牧师,从事家禽遗传育种和健康养殖研究。

收稿日期 2020-04-13

金陵白鸭是南京市畜牧家禽科学研究所以连城白鸭和樱桃谷鸭为育种基础素材,开展一系列杂交培育和综合利用措施,以注重肉质风味特色为前提,以提高杂交后代的生长速度及屠体重量为目的,经过5个世代的系统选留选配培育而成的。金陵白鸭具有“白羽、乌嘴、乌脚”的外貌特征,肉质、口感风味独特,在江苏省及周边省份进行的中试适应性饲养均获得了较高的评价[1]。

目前对蛋品质影响因素的研究主要集中在饲养方式、品种、饲料等因素对蛋品质的影响上,而对蛋品质的变化规律尤其是鸭蛋品质的变化规律研究报道较少[2]。

笔者以金陵白鸭为研究对象,研究不同产蛋周龄对蛋品质的影响,旨在为金陵白鸭种质资源研究、选种繁育、培育新品种、鸭蛋加工和产品开发提供基础依据。……

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