Ganho de peso de cordeiros corriedale com a utilização de fósforo orgânico e vitamina B12 em sistema de confinamento

Abstract

Containment is interesting in order to add value, to standardize the product and scale production, selling quality meat in the period between harvest. This study aimed to assess the weight gain of Corriedale lambs, confined with and without application of organic phosphorus associated with vitamin B12 (FOB12). The work was carried out between March and June 2011, in the municipality of Dom Pedrito, with 28 lambs, wethers, steers, milk tooth. The confinement of was in a shed, using bed maravalha. The lambs were divided into two lots of 14 animals and one group received two applications FOB12 by deep intramuscular injection. The power system was a commercial feed formulated for lambs in confinement, offered twice a day, morning and afternoon, and 4% by weight provided alive. In the confinement, were evaluated in each weighing, the average daily gain (GMD) and body condition score (ECC), at intervals of 07 days, by the morning due to fasting for 12 hours and water diet, totalizing 11 ratings. The feedlot lambs started with average weight of 24 kg and ECC 2,5, were slaughtered when they reached average weight of 34 kg and ECC 3,5. The overall average daily gain (GMDg) and average total earnings (GMT) of lambs in this experiment found for the groups with and without application of FOB12, were respectively 0,168 and 0,181 and 10,08 and 10,86 kg, not observing differences between treatments (P>0,05). Concluding that the use of FOB12, did not interfere with weight gains of Corriedale lambs in confinement system.