摘要
本试验旨在研究蛋壳元素组成、超微结构和钙化壳基质含量对龙岩山麻鸭蛋壳质量的影响。试验选用300日龄龙岩山麻鸭所产白壳蛋300个,根据蛋壳强度平均分为高、中、低3个试验组,每组5个重复,每个重复20个蛋,测定蛋壳质量、元素组成和超微结构。结果表明:高、中、低蛋壳强度组蛋壳强度分别为(4.67±0.09)kg/cm^(2)、(3.78±0.02)kg/cm^(2)和(2.86±0.03)kg/cm2,组间差异显著(P<0.05);各组间的蛋重、蛋形指数、蛋壳厚和蛋壳重无显著差异(P>0.05)。3组间钙化壳的基质含量差异不显著(P>0.05),各组元素相对含量在蛋壳超微结构的不同层次差异不显著(P>0.05)。对蛋壳超微结构观察发现,与中、低强度蛋壳组相比,高强度蛋壳组横断面致密性更好,乳突顶部连接更紧密;并且各组间的乳突层有效厚度差异显著(P<0.05),高、低蛋壳强度组的乳突间隙差异显著(P<0.05)。综上所述,厚度相似的蛋壳,其蛋壳各层元素相对含量和基质含量对龙岩山麻鸭蛋壳强度无显著影响,蛋壳超微结构致密度对蛋壳质量具有重要作用,其中乳突层有效厚度和乳突间隙是影响蛋壳质量的重要因素。
The aim of this experiment was to investigate the effects of eggshell elementary composition,ultrastructure,and calcified eggshell organic matrix content on the eggshell quality of Longyan Shanma duck.In the experiment,three hundred eggs laid by 300dayold Longyan Shanma ducks were selected and divided into three experimental groups of high,middling and low intensity according to the eggshell strength,with five replicates in each group and 20 eggs in each replicate.And the eggshell quality,elementary composition and ultrastructure were determined.The results showed that the eggshell strength values of the high,middling,and low intensity groups were(4.67±0.09)kg/cm^(2),(3.78±0.02)kg/cm^(2),and(2.86±0.03)kg/cm^(2),respectively,and the difference was highly significant(P<0.05).There were no significant differences in egg weight,egg shape index,eggshell thickness,and eggshell weight among the groups(P>0.05).There was no significant difference in the matrix content of calcified shell among the three groups(P>0.05).And there was no significant difference in the relative content of eggshell elements among the three groups at different levels(P>0.05).The ultrastructure of eggshell showed that compared with low and middling strength eggshell,high strength eggshell had better crosssectional densification and closer connection at the top of mastoid.And there were significant differences in the effective thickness of mastoid layer among all groups(P<0.05),and significant differences in the mastoid gap between high and low strength groups(P<0.05).In conclusion,for eggshells with similar thickness,the relative content of elements in each eggshell layer and the matrix content have no significant effect on the eggshell strength of Longyan Shanma ducks.The ultrastructure density of eggshell play an important role in the eggshell quality,and the effective thickness of mastoid layer and mastoid gap are the important factors affecting the eggshell quality.
作者
王蕾
赵邦哲
张迎燕
田若宁
王雅婷
李昂
梅景良
连森阳
吴旭
WANG Lei;ZHAO Bangzhe;ZHANG Yingyan;TIAN Ruoning;WANG Yating;LI Ang;MEI Jingliang;LIAN Senyang;WU Xu(College of Animal Science(College of Bee Science),Fujian Agriculture and Forestry University,Fuzhou 350002,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2024年第3期1665-1673,共9页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
福建省农业良种育种攻关与产业化工程(zycxny2021014)
现代农业产业技术体系建设专项基金(CARS⁃43)。
关键词
龙岩山麻鸭
蛋壳强度
元素组成
基质含量
超微结构
Longyan Shanma duck
eggshell strength
element composition
matrix content
ultrastructure
