Mgongo, F., Kenan, C., & Leidl , W. (1989). Modern Alternative Methods Of Pregnancy Diagnosis In Dairy Cows: Milk Progesterone Testing (MPT) as a Screen-Test for Non-Pregnancy at Day 24 after Breeding. Tanzania Veterinary Journal, 9(3), 64–82. Retrieved from https://tvj.sua.ac.tz/vet2/index.php/TVJ/article/view/341