LEVELS OF HORMONES TRIIODOTHYRONINE AND PLASMA BLOOD GLUCOSE BROILER STARTER DUE TO HEAT STRESS AND PRELIMINARY DIFFERENCE FEEDING TIME

The study was conducted to know blood glucose and triiodothyronine levels of broiler starter due to heat stress and different initial-time feeding. The material used in this study was 64 male DOC broilers of Lohmann strain with the average initial weight of 47.98 ± 2.24 g. The experiment was designed based on randomized block design with a 2x2 factorial and four replications. The treatment combinations as follow: S1W1 = low temperature, feeding 12 hours post-hatching; S1W2 = low temperature, feeding 24 hours post-hatching; S2W1 = high temperature, feeding 12 hours post-hatching; S2W2 = high temperature, feeding 24 hours post-hatching. The Data were Analyzed by using ANOVA. If there was a significant effect (P <0.05) or very significant effect (P <0.01) in Followed by Duncan's test. The result Showed that heat stress treatment significantly affected (P <0.05) to the triiodothyronine level, while initial feeding treatment had no significant effect. Also, blood glucose levels had no significant effect due to the treatments. It concluded that heat stress negatively affected by the blood glucose and triiodothyronine levels of broiler starter. The initial-time feeding has no effect on the blood glucose and triiodothyronine levels. Interactions between treatment and different temperature-time initial feeding have no effect. Nevertheless, the low temperature treatment and initial feeding of 12 hours post-hatching shows the best results with blood glucose 246.25 ± 9.91 mg / dl and triiodothyronine of 2.05 ± 0.14 ng / ml.