Cost benefit analysis of fattening Kivircik lambs fed diets containing different protein levels and determination of optimum fattening period

Kaygsz, F.; Elmaz, O.; Keser, O.; Blal, T.; Kutay, C.

Assiut Veterinary Medical Journal 50(101): 48-56


ISSN/ISBN: 1012-5973
Accession: 004090406

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In this study, 40 weaned male Kivircik lambs (90-days-old, 26.7 kg body weight) were divided into 5 groups fed diets containing different protein levels for 4 days. The animals were weighed at 2-week intervals. Cost benefit analysis was conducted to determine which group was more profitable, while the optimum fattening period was determined using marginal cost-marginal return equality. Feed intake per kg liveweight gain was also determined. It was shown that average initial and final body weights, average daily liveweight gain, dry matter intake and feed conversion efficiencies were 26.2, 26.6, 25.6, 28.0 and 27.5 kg; 40.1, 41.8, 42.3, 45.0 and 43.1 kg; 165.48, 180.95, 198.81, 202.38 and 185.71 g; 1033.65, 1030.31, 1037.10, 1032.28 and 1033.37 g and 6.25, 5.69, 5.22, 5.10 and 5.56 for Groups I, II, III, IV and V, respectively. The optimal fattening period was between days 70 and 84 in all groups. Groups 2 and 4 were close to the economically optimal fattening period on day 84, while the optimal fattening period was between days 56 and 70 for Group III. A higher revenue was obtained in Group II, followed by Groups IV, III, V and I.