Efecto del sexo del ternero sobre el comportamiento productivo y reproductivo de la raza bovina colombiana Lucerna
The objetive was to measure effect of sex Lucerna cows' sucklings on productive and reproductive parameters , using data from 2663 animal science record s from 657 cows, at their place of origin Bugalagrande, Valle del Cauca, Colombia. The various variance analyses included the effects of sucling's sex, year, month, and order of parturition. The distribution of sucklings by sex presented a relative frequency of 53 % males, 46 % females, and 1% non recordable. Analyses showed that sex of Lucerna cows' suckings did not statistically influence milk production in 180 and 305 days of lactation , in total milk production , and in the duration of lactation period. On the other hand, for reproductive variables, analyses showed that the sex of sucklings of Lucerna cows had statistically significant effects on the duration of the rest or dry period, which were determined by average values of 101 days os duration when the sucking's sex was male, and 94 days when it was female. In the duration of the service or open periods, and of time between parturitions, sex of the suckings did not have any statistical effects.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Palmira
1990
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| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/15460 |
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