评价墨西哥养母奶牛养奶牛养奶牛的养奶牛
David A Contreras1,2, Lena Lidfors2, Carlos S Galina1
1Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico.
The Journal of dairy research
|May 18, 2025
概括
与传统的小牛养殖方法相比,养牛小牛养殖系统显示出高的小牛收养率,改善了乳液健康,小牛的体重增加更大.
科学领域:
- 动物科学动物科学
- 兽医医学 兽医医学 兽医医学
- 乳制品 畜牧业 乳制品 畜牧业
背景情况:
- 传统的奶牛养殖通常会在分娩后将小牛与母牛分开.
- 这种分离可能会影响小牛的福利和牛的健康.
- 替代养殖系统需要调查,以获得更好的结果.
研究的目的:
- 评估一个养母牛和小牛的养殖系统.
- 评估小牛的收养,牛奶产量,乳腺健康和小牛的生长.
- 将寄养养殖与传统的分离小牛养殖进行比较.
主要方法:
- 在一个寄养群 (FG) 中,8头母牛在持续接触下养育了3头小牛.
- 对照组 (CG) 的小牛是在传统的分开奶系统中养的.
- 收集的数据包括行为观察,牛奶产量,牛奶质量测试 (加利福尼亚乳腺炎测试,威斯康星测试,体细胞计数),以及8周的小牛每日体重增加和腹发病率.
主要成果:
- 大多数养母牛 (6/8) 收养了所有三个小牛.
- 养母组的奶牛每次挤奶产量为2.52升牛奶;对照组的奶牛每次挤奶产量为10.07升牛奶.
- 在寄养组中,阴茎健康状况有所改善,体细胞数量减少表明了这一点.
- 与对照组小牛 (471 g/d) 相比,寄养组小牛的平均每日体重增加显着更高 (700.7 g/d).
结论:
- 养母牛-小牛养殖系统在很大程度上被公牛所接受.
- 寄养养殖对奶牛乳液健康和小牛体重增加产生积极影响.
- 这种系统为传统的小牛养殖方法提供了可行的替代方案.
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