Comportamento ingestivo, parâmetros fisiológicos e hematológicos de cabras mestiças em lactação alimentadas com dietas contendo óleo de buriti (Mauritia flexuosa L.)

Abstract

The aim of this study was to evaluate the oil of buriti instead of ground corn, the influence on feeding behavior, physiological parameters and hematological parameters of crossbred goats in lactation. Eight crossbred Anglo-Nubian goats were used with an average weight of 38.40 ± 1.14 kg randomly distributed in double Latin squares 4x4 used simultaneously. The animals were put in individual stalls and the treatments consisted on diets in form of complete mixture, composed of corn silage, concentrate based in corn, soybean, mineral supplement and increasing levels of Buriti oil (0.0, 1, 5, 3.0 and 4.5% based on MS). For the evaluation of ingestive behavior, the animals were observed individually each 10 minutes for 24 hours for four integral periods. The physiological responses (respiratory rate, heart rate, rectal temperature and sweating rate) of the animals were evaluated in each experimental period at 05:00, 09:00, 15:00 and 18:00. The blood samples were always taken in the morning, before the morning meal, by puncturing the jugular vein for realization of hemogram and leucogram. The level of Buriti oil in replacement of grounded corn did not change (P> 0.05) the feeding time, rumination and total chewing time. The consumption of dry matter, neutral detergent fiber, the efficiencies intake and rumination of dry matter and neutral detergent fiber were not affected by the inclusion of Buriti oil in diet. The physiological parameters were not affected by the inclusion of the oil, except the heart rate in the afternoon. The average erythrocyte values, the average corpuscular hemoglobin concentration and total plasma protein did not differ (P> 0.05) between the Buriti oil levels. In relation to the averages of the leucogram, there was no effect of Buriti oil levels in total leukocyte count (P = 0.495) and in numbers of neutrophils (P = 0.178), eosinophils (P = 0.888), lymphocytes (P = 0.876) and monocytes (P = 0.707). The inclusion of Buriti oil in up to 4.5% (DM basis) in replacement of grounded corn in lactating goats diet does not interfere with the feeding behavior, and physiological and blood parameters.