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CAB Reviews

A reviews journal covering agriculture, global health, nutrition, natural resources and veterinary science

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Data on the use of artificial insemination in tropical cattle indicate that the modal number for services per conception is about 1.6. Time of the year, breed, body condition of the animals, and season exert an important effect on conception rate. There are few data available on morphological...

Author(s)
Galina, C. S.; Arthur, G. H.
Citation
Animal Breeding Abstracts, 1990, 58, 9, pp 805-813

Several studies indicate that the length of the oestrous cycle in tropical cattle is about 21 days, and that the oestrous period lasts from 4 to 14 h depending on breed and time of year. Most of the published information suggests that these animals show overt oestrous signs in the early morning,...

Author(s)
Galina, C. S.; Arthur, G. H.
Citation
Animal Breeding Abstracts, 1990, 58, 8, pp 697-707