海兰褐蛋鸡不同产蛋期血钙磷水平与蛋品质相关性分析

发布时间：2019-04-04 20:11

【摘要】：蛋壳质量是衡量蛋鸡生产性能的重要指标之一,目前关于海兰褐商品蛋鸡不同产蛋期血液钙磷与蛋品质的相关性研究还未见报道。本文通过研究不同产蛋期海兰褐蛋鸡血清钙磷水平变化与蛋品质变化的相关性,以期为改善蛋品质,保障笼养海兰褐蛋鸡健康和生产提供理论依据。试验采用随机单因素方差设计,选取产蛋前期(23周龄)、产蛋高峰期(43周龄)和产蛋后期(71周龄)的海兰褐商品蛋鸡各8只,进行称重、采血;同时收集各时期同天所产的鸡蛋,各周龄18枚。结果显示,不同产量期血钙含量依次升高,且差异显著(P0.05);血磷含量各组间无显著差异(P0.05);蛋壳厚度和强度在产蛋后期明显降低,且与前期和高峰期差异显著(P0.05);蛋品质指标仍在正常范围内。71周龄时,蛋品质降低,机体已经出现钙磷的代谢紊乱,需要适当调整饲料钙磷添加量,以提高蛋的品质。
[Abstract]:The egg shell quality is one of the important indexes to measure the performance of laying hens. At present, there is no report on the correlation between blood calcium, phosphorus and egg quality at different laying stages of Hailan brown commercial layers. The relationship between the changes of serum calcium and phosphorus levels and egg quality in Hailan brown layer at different laying stages was studied in order to provide theoretical basis for improving egg quality and ensuring the health and production of Hailan brown laying hens in cage. A random one-way ANOVA design was used to select 8 hailan brown commercial laying hens at the early stage of laying (23 weeks old), the peak period (43 weeks) and the late laying period (71 weeks old), to weigh and collect blood. At the same time, 18 eggs of the same day in each period were collected. The results showed that the serum calcium content in different production stages increased in turn, and the difference was significant (P0.05), but there was no significant difference in blood phosphorus content among the groups (P0.05). The thickness and intensity of eggshell decreased significantly in the late stage of egg laying, and the difference was significant compared with the early stage and peak period (P0.05). The egg quality index was still within the normal range. At 71 weeks old, the egg quality decreased and the metabolism disorder of calcium and phosphorus appeared in the body. It was necessary to adjust the dietary calcium and phosphorus content properly in order to improve the egg quality.
【作者单位】：沈阳农业大学;
【基金】：国家自然科学基金项目(31672510)
【分类号】：S831

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