Torta de dendê na terminação de cabritos e perfil lactacional cabras de três grupos genéticos.

Abstract

The objective of this study was to evaluate the lactational profile of goats from genetic groups with different dairy skills, confined, under the same food management in a tropical environment. 23 goats, multiparous, recently calved, divided into 3 treatments (genetic groups: Saanen, Moxotó and Anglo Nubiana), randomly distributed in collective pens, under the same diet. 5 mathematical models were used to adjust the lactation and body weight variation curves: Wood (1967) (WD); Papajcsik and Bodero (1988) (PB); Adapted from Papajcsik and Bodero (1988) (APB); Nelder (1966) (ND) and Wilmink (1987) (WM). All models presented results for the estimates of parameters a, b and c (P <0.05), however, the WM showed a better fit to the Saanen milk production data and the APB for Anglo-Nubiana and Moxotó. The Moxotó goats presented themselves as the genetic group with the lowest potential for milk production with 0.37 liters (L) of medium and maximum of 0.91 L and the Saanen and Anglo females with 1.37 L and 2.91 L , 0.90 L and 2.42 L of average and maximum, respectively. Weight recovery was similar between races and the end of the negative energy balance (BEN) was in the 6th week after delivery. The values of betahydroxybutyrate (B-HBO), were proportional to the milk potential, varying from 0.21 to 1.04 for Saanen, 0.11 to 0.9 for Moxotó and 0.11 to 0.87 for Anglo- Nubian. The composition of milk, with the exception of lactose (P> 0.05), was influenced by genetic groups (P <0.05), with lower percentages in animals with milk and double aptitude. All components were influenced by the lactation week and the maximum point of 8.69% of fat was verified in the 22nd week in the Moxotó breed. The consumption of dry matter was influenced by the lactation week (P = 0.012), with a maximum in the 2nd week. The genetic group influences the lactational profile, weight recovery, milk production and composition, and nutrient intake is influenced by the lactation week.