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Evaluation of early embrionic development after natural mating using ultrasonography in bos indicus cows in the humid tropics of Costa Rica
(Springer, 2008)
Fifty-eight nursing Zebu cows averaging 5922 days postpartum were used to
evaluate the early embryonic development by ultrasound under a natural mating system
(bulls A to F). Three consecutive mating periods of 21 days ...
Ultrasonography as Aid for Early Pregnancy Diagnosis in Zebu Cattle in a Natural Mating Programme
(Taylor and Francis Group, 2006)
To utilise ultrasonography in Zebu cattle to test early pregnancy, multiparous Bos indicus COWS (n=74)
were allocated with 2 mature Brahman bulls, which were replaced with new ones every four weeks. COWS
were bled for ...