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Article . 2019 . Peer-reviewed
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Análisis reproductivo de vacas Suizo Pardo x Cebú y Simmental x Cebú en condiciones tropicales

Authors: Ángel Ríos Utrera; Eugenio Villagómez Amezcua Manjarrez; Juan Prisciliano Zárate Martínez; René Carlos Calderón Robles; Vicente Eliezer Vega Murillo;

Análisis reproductivo de vacas Suizo Pardo x Cebú y Simmental x Cebú en condiciones tropicales

Abstract

Objetivo. Comparar la fertilidad de vacas cruzadas Suizo Pardo x Cebú y Simmental x Cebú criadas en un ambiente tropical. Materiales y métodos. Se evaluaron características reproductivas de 185 vacas cruzadas Suizo Pardo x Cebú y Simmental x Cebú con diversos porcentajes de raza europea. El pastoreo de las vacas fue rotacional. El ordeño fue dos veces al día con la ayuda (amamantamiento) del becerro, el cual se mantuvo atado cerca de la vaca mientras ella se ordeñaba. Las características se evaluaron ajustando un modelo de mediciones repetidas (excepto para edad a primer parto). Periodo interparto, edad a primer parto, días abiertos, periodo parto-primer servicio y peso al parto fueron analizados con PROC MIXED de SAS. Tasa de gestación a primer servicio y servicios por concepción, se analizaron con PROC GENMOD del mismo programa. Resultados. Las vacas Simmental x Cebú se sirvieron después del parto 39 días antes (p<0.05) y tuvieron 47 días abiertos menos (p<0.05) que las Suizo Pardo x Cebú. El periodo interparto de las vacas Simmental x Cebú fue 45 días más corto (p<0.05) que el de las Suizo Pardo x Cebú. Las vacas Simmental x Cebú pesaron 34 kg más al parto (p<0.05) que las Suizo Pardo x Cebú. Conclusiones. Las vacas Simmental x Cebú tuvieron mejor fertilidad que las Suizo Pardo x Cebú.

Country
Colombia
Keywords

calving interval, cruzamiento, edad a primer parto, tropics, trópico, tasa de gestación, crossbreeding, pregnancy rate, repeated measures analysis, Análisis de mediciones repetidas, periodo interparto, Age at first calving

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    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
6
Top 10%
Average
Average
Green
gold