孕妇营养不良对携带单个和多个胎儿的绵羊中妊娠相关糖蛋白 (PAG) 度的影响
Olimpia Barbato1, Vittoria Lucia Barile2, Laura Menchetti3
1Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy.
Animals : an open access journal from MDPI
|December 17, 2024
概括
孕羊的营养不良会增加与怀孕相关的葡萄糖蛋白 (PAG) 水平,这表明胎盘功能得到改善. 在羊群中,PAG测量可以表明怀孕和胎盘健康.
科学领域:
- 生殖生理学 生殖生理学
- 动物营养 动物营养
- 生物化学 生物化学
背景情况:
- 怀孕相关的葡萄糖蛋白 (PAG) 对于游牧动物的胎盘发育和功能至关重要.
- 在羊的关键胎盘生长期间,母乳营养不良对PAG度的影响仍然在很大程度上未被研究.
研究的目的:
- 为了研究饮食能量限制对孕母羊血PAG度的影响.
- 为了确定PAG水平是否受胎儿数量 (单个或多个) 和母亲的营养状况的影响.
主要方法:
- 怀孕的母羊从怀孕的第24天到第100天接受了100% (控制) 或50% (限制料) 的能量需求.
- 血液样本在整个妊娠期和产后被连续采集,以测量PAG,孕激素,NEFA,总蛋白质和葡萄糖.
- 进行了统计分析,以比较饮食组和怀孕类型之间的PAG度.
主要成果:
- 与对照雌羊相比,受限料的雌羊表现出明显更高的PAG度 (10.8 ± 0.9 ng/mL与7.8 ± 0.6 ng/mL相比,p = 0.040).
- PAG度受到胎儿数量和母羊的饮食摄入量的影响.
- 在被限制食的母羊中增加的PAG水平表明,在营养压力下,胎盘功能的补偿性增加.
结论:
- 在羊的早期到中期妊娠期间,饮食能量限制会导致PAG度升高.
- 在绵羊怀孕期间,PAG测量可以作为胎盘功能和母体营养状况的有价值指标.
- 这项研究强调了孕母羊的营养,胎儿数量和胎盘适应之间的复杂相互作用.
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