Citas bibligráficas
Paytan, A., (2021). Epoca de parto y su relación con el desempeño productivo y reproductivo de vacas Holstein criadas en sistema intensivo en un establo de la cuenca lechera de Majes [Universidad Peruana Cayetano Heredia]. https://hdl.handle.net/20.500.12866/10051
Paytan, A., Epoca de parto y su relación con el desempeño productivo y reproductivo de vacas Holstein criadas en sistema intensivo en un establo de la cuenca lechera de Majes []. PE: Universidad Peruana Cayetano Heredia; 2021. https://hdl.handle.net/20.500.12866/10051
@misc{sunedu/3207810,
title = "Epoca de parto y su relación con el desempeño productivo y reproductivo de vacas Holstein criadas en sistema intensivo en un establo de la cuenca lechera de Majes",
author = "Paytan Paccori, Aaron",
publisher = "Universidad Peruana Cayetano Heredia",
year = "2021"
}
The objective of this study was to evaluate the effect of the season of the year and the number of lactation on the reproductive and productive parameters of Holstein cows reared under intensive conditions in the Majes dairy basin during the period 2012 - 2018. The productive records were analyzed and reproductive of 567 Holstein cows from their first to their fourth lactation. Depending on the season of the year, a lower milk production was observed in cows that calved in winter and autumn, the longest duration of the campaign was observed in cows that calved in summer and the shortest in those that calved in autumn and winter. According to the lactation number, the production campaign was shorter in cows from the first calving in relation to later calvings, the highest milk production was reached in the second calving, which decreased significantly until the fourth calving. Reproductive performance was better in cows that calved in winter and decreased significantly in cows that calved during summer and spring; According to the number of calvings, it was the first calving cows that had the best reproductive indices and as the number of calvings increase, the indices deteriorate. The results obtained show that there is a significant effect of the season of the year and the number of calving on the main reproductive and productive parameters.
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