Departamento de Medicina y Zootecnia de Rumiantes, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.
Departamento de Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.
Reprod Domest Anim. 2021 Dec;56(12):1479-1485. doi: 10.1111/rda.14015. Epub 2021 Sep 22.
Small community cattle farmers in the tropics are facing challenges to deliver quality products whilst under pressure to increase milk and beef yields per cow. These challenges could be partially met by crossbreeding Bos taurus with Bos indicus (F1) cattle utilizing embryo transfer (ET) technology. The Bos taurus infusion would increase milk production, whilst the Bos indicus influence can improve resistance to the harsh environment of the tropics. Here, individuals from existing herds can be used to produce F1 embryos which benefit from hybrid vigour. Resultant female offspring would in turn receive an F1 embryo on reaching breeding maturity. This approach would help to provide a cost-effective, systematic approach to improve productivity in dairy and beef cattle in the tropics. However, full usage of ET, including in vitro applications, in the tropics will require improvements in procedures, resources and education.
小农户在热带地区饲养奶牛，面临着提高牛奶和牛肉产量的压力，同时也面临着提供优质产品的挑战。通过利用胚胎移植（ET）技术将瘤牛与印度野牛（F1）杂交，可以部分解决这些挑战。瘤牛的注入可以提高牛奶产量，而印度野牛的影响可以提高对热带恶劣环境的抵抗力。在这里，可以利用现有牛群中的个体来生产受益于杂种优势的 F1 胚胎。随后，当这些雌性后代达到繁殖成熟时，会给它们移植 F1 胚胎。这种方法将有助于为热带地区的奶牛和肉牛提供一种具有成本效益的、系统的提高生产力的方法。然而，要充分利用 ET，包括在热带地区的体外应用，需要改进程序、资源和教育。
