Efeito da dieta e do ambiente sobre os parâmetros fisiológicos e hematológicos de codornas no Semiárido Brasileiro.

Abstract

The objective was to evaluate the effect of different levels of metabolizable energy and crude protein on rectal temperature, surface temperature and respiratory rate of 360 European quails (Coturnix coturnix coturnix) 22-42 days of age, raised in semi-arid. The birds were distributed in a completely randomized design with a 3x2 factorial arrangement, three protein levels (20, 21 and 22% CP) and two energy levels (3050 and 3150 kcal / kg), with five replications. The measurement of physiological parameters was performed at 42 days of age of the birds in the morning and afternoon shifts. The TA and UR observed in the morning shift were 30.8 ° C and 53.2%, respectively. In the afternoon, 29.6 ° C and 58.2%. The average TR found in this study was 41.8 ° C within the normal range. The levels of 21 and 22% CP and 3150 Kcal / kg, there was a significant effect (P <0.05) where the animals had higher FR, assuming that the use of panting mechanism resulted in maintaining homeotermia. The TS was lower in the diets containing 3050 kcal / kg. There was no significant difference (P> 0.05) in feed intake among diets. The levels of 21% and 22% CP and 3150 IN kcal / kg showed higher weight gain and better feed conversion. Recommended, the 21% crude protein levels and 3150 kcal / kg in quails European diet from 22 to 42 days of age, to obtain better performance results.