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CAB Reviews

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

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Most of the data reviewed indicate that Bos indicus bulls tend to reach puberty later than B. taurus bulls. Testicular development is slower in B. indicus than in B. taurus, but this does not seem to affect reproductive performance in mature bulls. There are different opinions with respect to semen ...

Author(s)
Galina, C. S.; Arthur, G. H.
Citation
Animal Breeding Abstracts, 1991, 59, 5, pp 403-412

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

A review of the literature on factors affecting the length of the postpartum period in cattle indicated that metabolic diseases and uterine infections following parturition are not common in tropical cattle. However, breed of the cow, body condition and time of the year when calving occurs, and,...

Author(s)
Galina, C. S.; Arthur, G. H.
Citation
Animal Breeding Abstracts, 1989, 57, 11, pp 899-910

A review of the literature was carried out to identify the main factors affecting calving in tropical cattle. Although some studies suggest a calving index of 75%, the tendency reported in most instances is for only 50% of the herd to calve each year. Annual variation in the availability of...

Author(s)
Galina, C. S.; Arthur, G. H.
Citation
Animal Breeding Abstracts, 1989, 57, 8, pp 679-686

Data published on puberty and factors that affect age at first calving indicate that the onset of ovarian activity in zebu-type cattle occurs arund 22 months of age, and that crossbreeding, particularly with Jersey bulls, can reduce this interval to as little as 15 months. Year and month of birth,...

Author(s)
Galina, C. S.; Arthur, G. H.
Citation
Animal Breeding Abstracts, 1989, 57, 7, pp 583-590