Benefit-cost analysis of fattening of kivircik lambs fed diets contained different protein levels and determination of optimum fattening period [electronic resource].

Includes references.

This study was carried out to investigate the optimal fattening period and profit of lambs fed diets with different levels of protein. In the experiment, foOOy weaned male Kivircik lambs divided into five treatment groups each containing eight lamb. Groups were fed diets contained different levels of protein along 84 days the duration of the experiment. Average daily body weight gain of groups was 165.48 g, 180.95 g, 198.81 g, 202.38 g, 185.71 g; respectively, and feed efficiency ratio was 6.25, 5.69, 5.22, 5.10, 5.56, respectively. Optimal fattening period was achieved by groups 1 and 5 between 70-84 days, and by group 3 between 56-70 days. However, along the 84th d of the experiment, equality of marginal cost-marginal return could not be obtained. As a result of research, benefit-cost analysis of feeding with diets contained different protein levels showed that the highest revenue per lamb was obtained from group 2 and followed by group 4, 3, 5 and 1, respectively. Key words: Kivircik Lambs fattening, marginal cost, marginal return.