Research Progress on Improving Eggshell Quality in Late Laying Period
ZHANG Yijian1,2, HU Yan1, LIANG Mingzhen2, TONG Haibing1
1. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China;
2. College of Animal Science and Technology, Guangxi University, Nanning 530000, China
Abstract：Eggshell quality is an important indicator for evaluating egg quality. It is related to the breakage rate during the transportation and storage of eggs, and is directly related to the pass rate of breeding eggs, hatching rate and the health of chicks. It is one of the important factors affecting the production efficiency of laying hens. The aging of laying hens is the main factor leading to the decline of eggshell quality in the later stages of laying. Especially in recent years, the laying cycle of commercial laying hens has been greatly prolonged, and the aging degree of laying hens has been higher, resulting in a more serious problem of the decline of eggshell quality in the later stage of laying. This article summarized the reasons for the decline of eggshell quality in the late laying period from the eggshell formation process and calcium metabolism process, and summarized and prospected the solutions to improve the eggshell quality in the late laying period.
张倚剑, 胡艳, 梁明振, 童海兵. 改善产蛋后期鸡蛋蛋壳质量研究进展[J]. 动物营养学报, 2021, 33(2): 686-697.
ZHANG Yijian, HU Yan, LIANG Mingzhen, TONG Haibing. Research Progress on Improving Eggshell Quality in Late Laying Period. Chinese Journal of Animal Nutrition, 2021, 33(2): 686-697.
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