Efeitos de níveis crescentes de energia metabolizável sobre o crescimento corporal, testículo-epididimário e perfil lipídico em cordeiros Somalis Brasileira

Abstract

The aim of the following study was to measure and evaluate the blood lipidic concentrations and biometric measurements (body, testicular and epididymal) of Brazilian Somali lambs, which were subjected to growing levels of metabolizable energy (ME). 33 lambs were used, not castrated, (13,47 ± 1,76 kg and 2 months old), distributed randomly in five treatments with 1,18, 2,07, 2,25, 2,42 e 2,69 Mcal/kg of DM and water at will. Weekly, blood was collected to further analysis of triglycerides and cholesterol concentrations. It was also measured the withers height, thoracic perimeter, scrotal perimeter, testicular length, testicular width, testicular thickness, epididymis length, epididymis width, epididymis thickness and lamb’s scrotum thickness. The body measurements, testicular and cholesterol grew up according to the increase in energy in the diet (p<0,05). There are few parameters of growing that are affected only by the animal’s age, being the majority of them affect by the age and the nutrition. It was concluded that the increase of energy inclusion in the lamb’s diet positively affects its body measurements and total serum triglyceride levels.