STUDY ON MAIN FATTENING AND SLAUGHTER LAMB QUALITIES OF KARNOBAT LOCAL BREED DEPENDING ON THE TYPE OF ANIMAL LEVELS OF PROTEIN IN MIXTURES I. DEPENDING ON THE TYPE OF ANIMAL

Stoyanka Stefanova, Margarit Iliev, Stayka Laleva, Velichka Koteva

Abstract: In order to conduct a study on the Fed and the main properties of lamb carcasses from Karnobat local breed, depending on the type of animal in the herd of the Institute of Agriculture - Karnobat study was 20 lambs. For the purpose of the experiment after weaning of lambs (2 months) two groups were formed, each of 10 animals (5 with clozed fleece and 5 with open fleece ). Testing animals had an average type of birth (loners) sex (male), age and live weight. First group was used as a control, the second experimental. When they reach slaughter weight approximately 30 kg, after 24-hour starvation diet animals were slaughtered and carcass analysis took place. It is that same level of protein feeding lambs with clozed fleece grow marginally higher average daily gain (9 g) and spends 451 g less feed per unit gain. The outcome mortem analysis found that the parameters characterizing the content of fat in the body - large intestine, the mesentery, veil, thymus gland and kidney fat were greater weight in animals with clozed fleece. The same is found in different parts of the body. The results highlight a tendency for content to less fat in the logs of open lambs with fleece.

Keywords: Karnobat local breed; lamb; protein; qualities

Date published: 2023-03-06