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The study was carried out at Gualaca Research Station with Zebu cattle grazing on unfertilized Faragua (hyparrhenia rufa) grass, with no mineral salt suplemented. Two mating periods of 3 months each during the year were studied; the first from April 15 to July 15, the second from August 15 to November 15. The same were repeated for 8 and 6 years respectively. Hards were made up of calving and noncalving cows, and heifers ready for service. The cow bult relation was 26:1. Results showed that under the first mating period, there was a greater percentage (57.2%) of pregnant cows than that of the second period (42.9%).
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| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto de Innovación Agropecuaria de Panamá
1983
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| Online Access: | http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/550 |
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