有机微量元素通过卵形成调节在产卵周期的晚期阶段改善卵质量
Songfeng Yang1,2, Haibin Deng1, Jiahao Zhu1
1Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, No. 483 Wushan Road, Guangzhou 510642, China.
Animals : an open access journal from MDPI
|June 19, 2024
概括
有机微量元素的补充,特别是在30-40%的水平上,改善了老母的蛋质量. 这种增强通过优化贝结构,硬度和蛋质量指标,通过特定的基因表达和酶活性调制来实现.
科学领域:
- 动物营养和家禽科学 动物营养和家禽科学
- 生殖生理学 生殖生理学
- 微量矿物质的新陈代谢
背景情况:
- 蛋质量对于家禽产业至关重要,微量元素在其形成中发挥着关键作用.
- 有机微量元素与无机形式相比,具有更高的生物可用性,但对蛋质量的最佳剂量需要进一步研究.
研究的目的:
- 研究不同剂量的有机微量元素替代无机元素对商业产母蛋质量的影响.
- 探索有机微量元素在产卵期间影响蛋重塑的潜在机制.
主要方法:
- 360只年龄较大的产卵母被分为四组,在8周的时间内接受含有无机微量元素 (CON) 或有机微量元素的饮食,其含量为商业水平的20% (LOT),30% (MOT) 和40% (HOT).
- 评估的生产性能,蛋结构,硬度,厚度,豪格单位,哺乳体和杆层的比例.
- 评估了与碳酸盐运输,子宫腺基因表达 (CA2,OC116,OCX32) 以及蛋中和含量的血清酶活性.
主要成果:
- 有机微量元素的补充没有显著影响产母的生产性能.
- 与CON组相比,MOT和HOT组在蛋结构,硬度,厚度和豪格单位方面表现出显著的改善.
- 较高的有机微量元素剂量 (MOT和HOT) 增加了血清碳酸盐运输酶活性,提高了贝腺中的关键基因表达,并提高了蛋的和含量.
结论:
- 摄入30%-40%的有机微量元素的食补充剂有效地改善了老年产母的蛋质量.
- 该机制涉及调节血清碳酸盐运输酶活性和对卵沉积至关重要的基因的表达.
- MOT组还显示了便元素分泌量减少和铁运输改善,表明营养物质利用率提高.
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