Parâmetros fisiológicos e gradientes térmicos de caprinos jovens alimentados artificialmente no Semiárido Brasileiro.

Abstract

The objective of this study is to determine physiological parameters of Anglo Nubians goats reared under feedlot and fed artificially in the semiarid, reared on the same environmental conditions and management. We used 22 animals with different ages from 30 to 70 days, distributed in a completely randomized design in two shifts (morning and afternoon) with 22 repetitions. Physiological parameters were estimated using the methodology described by Santos et. al. (2006) with measurements of rectal temperature (RT), respiratory rate (RR) and surface temperature (TS) in seven points. The blood counts were performed using a method described by Souza et al. (2008). Environmental parameters were recorded with the help of equipment installed in the experimental area. For the physiological analysis of variance revealed no effect of shift (P <0.05) for rectal temperature and respiratory rate, but all surface temperatures differed significantly between shifts, and observed the highest averages in the afternoon . Rectal temperature and respiratory rate average, kids with different ages were 39.29 ° C and 40.96 mov. / Min, respectively, and mean surface temperature in the morning was 31.27 ° C and later 33, 31 ° C, respectively. With regard to hematological parameters, significant differences (P> 0.05) between the two ages, had respective values for the packed cell volume (VG) of (28.9 % and 26.7 %), the number of erythrocytes (9.8 x 11.0 x 106μL and 106μL), mean corpuscular volume (MCV) (29.5 fL and 24.4 fL) and mean corpuscular hemoglobin concentration (MCHC) (31.5 % and 33.1%). Hematologic values found can be used as benchmarks in the pediatric clinic of goats according to age groups and environmental conditions, feeding and management similar to the present study.