Presença de árvores nos pastos maternidade: Efeitos nas condições ambientais que podem influenciar o comportamento de vacas e bezerros logo após o parto

Abstract

The objective was to evaluate the use of tree extracts under different climatic conditions by Nelore and ½ Angus-Nelore cows in labor and their impact on maternal-offspring behavior. The observations occurred in two properties, Prop-1 was observed a complete calving being 23 multiparous Nelore cows, 4 calving of Nelore calves, and 19 of 1/2 Angus-Nelore (AA-Nel); Prop-2 10 1/2 AA-Nel, 10 primiparous 1/2 AA-Nel and 22 Nellore multiparous cows were evaluated. The behavior of the cow and calf pair until the success of the first suckling, the initial and final place of parturition, presence of predator, duration of parturition, latency were evaluated: trying to stand, getting up, trying to suckle, suckling, time in contact with the calf (licking and sniffing), time without contact with the calf. AA-Nel cows that are less heat adapted calved more in the shade due to heat stress due to increased maternal experience cows prefer to calve with the herd. Births that occur in the sun without any environmental protection the highest occurrence of predators, when the classification of the top licking the offspring is high the latency to try to suckle is reduced. The presence of trees in farrowing pastures can reduce the presence of animals with the potential to attack the calves, improve the thermal comfort of the cow by decreasing heat stress, consequently improving the mother-offspring interaction. Keywords: bovine, mother - offspring interactions, parturition, shade, welfare.