info:eu-repo/semantics/article
Effect of energy-protein supplementation on productive performance of Romosinuano cows during pre and postpartum
Efecto de la suplementación energético-proteica sobre el desempeño productivo en vacas Romosinuano durante el pre y posparto
Registro en:
10.15381/rivep.v32i6.20125
Autor
Mestra Vargas, Lorena-Inés
Campos Gaona, Rómulo
Herrera Perez, Natalia
Fernández Niño, Juan Carlos
García Alegría, Katherine
Institución
Resumen
The effect of energy and protein densities of diets on homeostasis, metabolic profile and productive performance during pre and postpartum periods of Romosinuano cows was evaluated. Thirty grazing cows were assigned to three nutritional supplementation groups: TC: 0.0, T1: 2.35 and T2: 2.8 kg/animal/day of energy-protein supplement. The experiment ran from 30 days before calving to 60 days postpartum. Body weight (BW), body condition (BCS) and serum concentrations of glucose, cholesterol, total protein, β-hydroxybutyrate, non-esterified fatty acids (NEFAs), urea, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were evaluated. The prepartum supplementation did not affect BW (p=0.4557) nor BCS (p=0.1893). In the postpartum period, there was a significant effect of supplementation on BW (p=0.0343) and BCS (p=0.029) in T1 and T2 and on glucose at prepartum in T2 (p=0.0019). For cholesterol, there was a significant effect on prepartum in T2 (p=0.0036), as well as on days 5 and 60 postpartum in T1 and T2 (p=0.001). In β-hydroxybutyrate there was a significant effect on postpartum days 5 and 12 in TC (p=0.0365). For NEFAs there were no differences between treatments in the two phases. For total protein, a significant effect was found in the postpartum in T2 (p=0.0163) while for urea it was in the prepartum in TC (p=0.0334). For AST there was a significant effect on postpartum day 5 in T2 (p=0.0202) and for ALT at postpartum day 60 in T2 (p=0.0018). The supply of up to 2.8 kg/animal/day of energy-protein supplement optimizes the metabolic state of Romosinuano cows during the pre and postpartum period, and the productive performance, BW and BCS postpartum. Se evaluó el efecto de densidades energéticas y proteicas de dietas sobre la homeostasis, perfil metabólico y desempeño productivo durante el pre y postparto de vacas Romosinuano. Treinta vacas en pastoreo fueron asignadas a tres grupos de suplementación nutricional: TC: 0.0 T1: 2.35 y T2: 2.8 kg/animal/día de suplemento energético-proteico. El experimento se desarrolló desde 30 días antes del parto hasta 60 días posparto. Se evaluó el peso corporal (Pcorp), condición corporal (CC) y concentraciones séricas de glucosa, colesterol, β-hidroxibutirato, ácidos grasos no esterificados (NEFAs), proteína total, urea, aspartato aminotransferasa (AST) y alanina aminotransferasa (ALT). La suplementación al preparto no afectó el Pcorp (p=0.4557) y CC (p=0.1893). En el posparto hubo efecto significativo de la suplementación sobre PC (p=0.0343) y CC (p=0.029) en T1 y T2 y de glucosa al preparto en T2 (p=0.0019). Para colesterol hubo efecto significativo en el preparto en T2 (p=0.0036), así como al día 5 y 60 del posparto en T1 y en T2 (p=0.001). En β-hidroxibutirato hubo efecto significativo a los días 5 y 12 posparto en TC (p=0.0365). Para NEFAs no hubo diferencias entre tratamientos en las dos fases. Para proteína total se encontró efecto significativo en el posparto en T2 (p=0.0163), en tanto que para urea fue en el preparto en TC (p=0.0334). Para AST hubo efecto significativo al día 5 del posparto en T2 (p=0.0202) y para ALT al día 60 posparto en T2 (p=0.0018). El suministro de hasta 2.8 kg/animal/día de suplemento energético-proteico optimiza el estado metabólico de vacas Romosinuano durante el pre y postparto, y el desempeño productivo, Pcorp y CC al posparto.