MANDAL, D K; TYAGI, S. Factors affecting conception rate in Frieswal and other Holstein Friesian x Sahiwal crosses. The Indian Journal of Animal Sciences, Delhi, India, v. 74, n. 1, 2014. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/38251. Acesso em: 23 oct. 2025.