Desempenho, características químicas, físicas e sensoriais da carne de suínos recebendo diferentes níveis de Ractopamina na dieta

Abstract

The experiment was conducted at the Department of Animal Science of the Federal University of Lavras, with the objective to evaluate the performance, chemical, physical and sensory characteristics of pork meat receiving rations with different levels of ractopamine in the diet during 28 days. Sixty hybrids pigs were used, being 30 castrated males and 30 females, selected for high deposition of lean meat, with initial weight of 84,27 ± 2,26 Kg. The experimental design was a completely randomized block design with six treatments (0, 3, 6, 9, 12 and 15 ppm of ractopamine) and six repetitions with the experimental plot represented by a male and a female. The levels of 3, 6, 9, 12 and 15 ppm resulted in a higher final weight in relation to the control group, without the addition of ractopamine. The average daily weight gain, also had some influence in levels 9 and 12 ppm of ractopamine in relation to the control. While that diets with 9, 12 and 15 ppm resulted in better feed conversion. The feed consumption average daily and carcass yield were not affected (P>0.05 ) by ractopamine. Both for the loin as for the cup under refrigeration, the addition of ractopamine diets for pigs helped in the prevention of lipid oxidation. The loins of animals that received diets containing 0, 3, and 6 ppm of ractopamine were the most preferred by consumers, i.e. the addition of this additive does not cause-effect on the quality of meat to the consumer, the physical and chemical characteristics.