Desempenho e variáveis fisiológicas de ovinos santainês confinados em galpões com diferentes tipos de telhado no município de Parintins, AM.

Abstract

The Northern region of Brazil is characterized by intense rains, with high temperatures and relative humidity throughout the year, and the sheep are confined close to slaughter to increase their productive performance. The objective of the work was to evaluate the environmental, physiological and ingestive behavior of Santa Inês sheep, confined in sheds with different types of tiles in the municipality of Parintins, state of Amazonas, Brazil. Twenty Santa Inês sheep, castrated males, mean age of 1.5 years and live weight of 23 ± 2.1 kg were used. The animals were housed in two sheds, one with fiber cement tile (FC) and the other with polyvinyl chloride (PVC) tile. The environmental variables of the facilities and the physiological parameters of the animals were collected at 6, 9, 12, 15 and 16 h. The ingestive behavior was performed visually during 24 hours uninterrupted by previously trained observers. The statistical design used was the factorial 2x5 (2 roofs and 5 hours). The temperatures differed statistically (P <0.05) between the roofs, with room and tile temperatures higher in the shed with PVC tile, which contributed to the increase in the respiratory frequency of the animals at 9, 12 and 15 h . The animals installed in the shed with FC tile showed better weight gain, spent more time eating, consumed more dry matter of the feed and ingested less water.