在牛群中失去妊娠,重点是胚胎移植计划
Roberto Sartori1, Mirela Balistrieri1, Lucas Oliveira E Silva1
1Departmento de Zootecnia, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo - USP, Piracicaba, SP, Brasil.
Animal reproduction
|September 11, 2025
概括
在牛群中,孕期流产会影响牛群的效率. 管理策略可以改善妊娠成功并减少胚胎接受者的损失,特别是体外胚胎生产系统.
科学领域:
- 动物科学动物科学
- 生殖生物学 生殖生物学
- 兽医医学 兽医医学 兽医医学
背景情况:
- 流产 (PL) 显著影响牛群的生殖效率和经济可行性.
- 试管胚胎生产 (IVP) 系统面临PL的挑战,影响技术的成功.
- 怀孕的建立受受受精,母亲的环境和胚胎信号的影响.
研究的目的:
- 审查影响牛妊娠流产的因素,特别是在IVP和胚胎移植 (ET) 背景下.
- 确定可以改善生育能力和减少胚胎接受者的妊娠损失的管理策略.
主要方法:
- 对接受IVP和ET的奶牛和肉牛现有数据的审查.
- 分析了包括接受者身份 (奶牛与母牛),精液类型,同步协议和接受品种在内的因素.
- 评估雌性表达和胚胎质量对怀孕结果的影响.
主要成果:
- 乳牛ET可能会显示出更高的初始怀孕,但也比人工授精 (AI) 更多的PL.
- 接收肉牛的母牛比母牛的妊娠率更高 (P/ET) 和PL更低.
- 接收者因素如品种,同步,雌性表达和胚胎质量显著影响P/ET和PL.
结论:
- 管理策略对于提高生育能力和减少牛胚胎接受者的妊娠流产至关重要.
- 优化受体条件和胚胎选择可以提高IVP和ET计划的成功.
- 解决热应激和接收者管理等因素可以减轻牛的妊娠损失.
相关概念视频
01:27Reproductive Cloning
Reproductive cloning is the process of producing a genetically identical copy—a clone—of an entire organism. While clones can be produced by splitting an early embryo—similar to what happens naturally with identical twins—cloning of adult animals is usually done by a process called somatic cell nuclear transfer (SCNT).
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...
01:27Reproductive Cloning
Reproductive cloning is the process of producing a genetically identical copy—a clone—of an entire organism. While clones can be produced by splitting an early embryo—similar to what happens naturally with identical twins—cloning of adult animals is usually done by a process called somatic cell nuclear transfer (SCNT).
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic cell—any cell that is not a sex...