Resumen de Efecto de la suplementación con grasa sobrepasante sobre la condición corporal y la fertilidad de vacas Brahman
F. Jiménez Díaz, Antonio Manuel García Moreno, A. Quintero Moreno, N. Rojas
Sixty pregnant Brahman heifers were selected randomly and distributed into three treatment groups, each receiving 20 repetitions: Treatment 1 (control); Treatment 2, with a ration of wheat bran plus 150 g of bypass fats; Treatment 3, a ration based on wheat bran but without the bypass fats. The design was completely randomized, utilizing variance-covariance analysis from the SAS. Results showed that the fats had a significant effect on the body condition (BC) and weight obtaining values on the condition (pre and postpartum) and weight (467.86±1.28 vs. 452.41±0.57) significant (P<0.05), and BC also showed significant (P<0.05) results, with scores of 6.03±0.05 and 5.38±0.25. In terms of fertility, the effect of the treatment was significant (P<0.05) on the appearance of estrus and IA in the cows, obtaining 19 inseminated cows (95%) and one that did not evidence estrus (5%) in treatment 2 vs. 12 (60%) and 13 (65%) inseminated cows in the control and supplementation without fat treatment groups. Finally, a significant difference (P<0.05) was obtained when the effect of treatment was determined on pregnancy diagnosis among the inseminated cows 14 impregnated cows (70%) in the treatment group and 5 pregnant cows (25%) for the control and treatment three groups, respectively.
