相关实验视频

Updated: Jun 20, 2025

Protocol for Assessing the Relative Effects of Environment and Genetics on Antler and Body Growth for a Long-lived Cervid

Protocol for Assessing the Relative Effects of Environment and Genetics on Antler and Body Growth for a Long-lived Cervid

Published on: August 8, 2017

关于非洲牛的生殖表现的最新证据的系统地图

Fiona K Allan¹, Isla S MacVicar², Andrew R Peters²

¹Centre for Supporting Evidence Based Interventions-Livestock (SEBI-Livestock), Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, Midlothian, EH25 9RG, UK. Fiona.Allan@ed.ac.uk.

Tropical animal health and production

|July 21, 2024

概括

这项研究绘制了撒哈拉以南非洲地区牛的生殖性能研究的地图,发现牛的数据比公牛的数据更多. 结果显示,低收入和中等收入国家 (LMICs) 的生殖潜力良好.

科学领域:

兽医科学兽医科学兽医科学
动物繁殖动物繁殖
畜牧业管理畜牧管理

背景情况:

牛的生殖性能对于畜牧生产率和农民生计至关重要,特别是在低收入和中等收入国家 (LMICs).
在LMICs中,牛的最佳繁殖参数和管理策略往往不清楚或不易获得.
需要综合现有研究,以了解这些地区牛的繁殖现状.

研究的目的:

系统地绘制和综合最近公布的关于牛繁殖表现的证据,在选择的撒哈拉以南非洲国家.
发现研究缺口,特别是关于公牛生殖表现的缺口.
为LMICs的牛提供可实现的生殖参数提供见解.

主要方法:

采用系统地图方法来搜索关于牛和公牛生殖表现的研究.
搜索涵盖了厄立特里亚,埃塞俄比亚,肯尼亚,尼日利亚,索马里,南苏丹,苏丹,坦桑尼亚和乌干达的2012-2022年.
根据预先定义的标准,研究在标题,摘要和全文层面上进行了相关性选.

主要成果:

相当多的研究 (n=133) 集中在牛的生殖性能上,与牛的表现相比,很少有 (n=11).
埃塞俄比亚的研究比例最高,大多数研究是在2014-2016年和2021年之间发表的.
产卵间隔是一个经常报告的参数 (86项研究),而由于不孕不育而被除的情况较少 (八项研究).

结论:

在撒哈拉以南非洲的公牛生殖表现方面存在重大研究缺口.
现有的数据表明,在LMICs中可以实现牛的良好生殖表现.
这种综合研究可以为农场和国家层面的农民,顾问和政策制定者提供信息,以改善牛的繁殖策略.

关键词:

非洲非洲非洲牛群是牛群,牛群就是牛群.生育能力生育能力生育能力生殖生殖的繁殖系统地绘制地图.

更多相关视频

Author Spotlight: Improving Beef Cattle Nutrition and Production with a Focus on Feed Efficiency and Meat Quality Traits Through Advanced Biochemical and Molecular Assays

Author Spotlight: Improving Beef Cattle Nutrition and Production with a Focus on Feed Efficiency and Meat Quality Traits Through Advanced Biochemical and Molecular Assays

Published on: July 12, 2024

The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

Published on: September 7, 2015

相关概念视频

Migration

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.

The Evidence for Evolution

The Evidence for Evolution

Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.