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Observations on oestrus synchronization in zebu cattle



Observations on oestrus synchronization in zebu cattle



Livestock reproduction in Latin America Proceedings of the final research co ordination meeting, Bogota, 19-23 September 1988 Organized by the joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture: 227-239



Four series of experiments were conducted with 1170 zebu cattle to study the effect on CR of treatment with PG alone or with a progestogen (norgestomet) implant or an intravaginal progesterone-releasing device (PRID) followed by PG. The CR of treated and untreated control cows was 22 and 27% after insemination, and 47 and 41% after mating. After a 60-day breeding period, the pregnancy rate of mated cows was 13 percentage units higher than that of inseminated cows.

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Accession: 001898700

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