Growth and feeding conversion responses to different protein and energy supplies in Tupinambis merianae (Squamata: Teiidae)

Growth and feeding conversion responses of the teiid lizard Tupinambis merianae, fed with supplemented mixtures of bovine meat and fat, were evaluated. Six daily meals consisting of three protein (0.79, 0.99 and 1.19 g) and two lipid energy levels (16.92 and 24.79 kJ) for each 100 g of live weight were given. The highest and intermediate protein levels showed the highest growth rates in terms of body weight and snout-vent length. In addition, comparing isoproteic diets, those with higher energy content expressed better growth and feeding conversion indices. Considering both protein and fat energy, a daily supply of 0.99 g of the first one together with 24.79 kJ of the second per 100 g of live weight gave the best feeding conversion: 1.7 (weight gain/ingested dry matter). These values are quite consistent with those of a practical hatchery diet and are within the nutritional composition range of carnivores.