University of Guilan Animal Production Research 2252-0872 7 3 2018 11 22 Economic values of productive and reproduction traits of Lori sheep in village system with two strategies of one lambing per year and three lambings in two years Economic values of productive and reproduction traits of Lori sheep in village system with two strategies of one lambing per year and three lambings in two years 35 52 3182 10.22124/ar.2018.9861.1295 FA S. Asadollahi Ph.D in Animal Nutrition and Expert of Lorestan Jihad Agriculture Organization, Lorestan, Iran B. Yarahmadi Assistant Professor, Lorestasn Agricultural and Natural Resources Research Center, Lorestan, Iran M. Mohhamdi Saie Ph.D in Animal Nutrition and Expert of Lorestasn Agricultural and Natural Resources Research Center, Lorestan, Iran A. R. Aghashahi Associate Professor, Agricultural Research, Education and Extension Organization (AREEO), Ministry of Agriculture, Karaj, Iran Journal Article 2018 02 24 The aims of the present study were to estimate economic values and to determine breeding goals of functional traits of Lori sheep in the rural development system with two strategies, one lambing per year and three births in two years. For this purpose, functional parameters, management and economics of 32 flocks (according to Cochran's sample size formula) under the cover of a livestock breeding plan with a capacity of 3000 generative ewes from 2013 to 2015 were analyzed for two production cycles using a bio-economic model. The performance data were obtained from Animal Breeding Center of Iran and management and economic data were collected through preparation of a questionnaire and interviews with farmers. The results showed profit per head of ewe in the strategy of one lambing per year and three births in two years was 1723376 and 3429140, respectively. In both strategies, feeding considered more than 75 percent of total costs and the sales of meat with 98.5% had the highest percentage of total costs and revenues. In addition, in both strategies, relative economic coefficient of the number of lambs born per ewe had the highest relative economic value and wool produced for per ewe had the lowest relative economic value. Litter size and conception rate were the most important traits in the breeding objective for ewe in village system. Birth weight, weaning weight, yearling weight and survival at 3 and 12 months of age were the most important traits in the breeding objective for ewe lamb in village system. The strategy of three lambings in two years was superior to one lambing per year strategy due to the increase in the number of lambs for consumer sales. The aims of the present study were to estimate economic values and to determine breeding goals of functional traits of Lori sheep in the rural development system with two strategies, one lambing per year and three births in two years. For this purpose, functional parameters, management and economics of 32 flocks (according to Cochran's sample size formula) under the cover of a livestock breeding plan with a capacity of 3000 generative ewes from 2013 to 2015 were analyzed for two production cycles using a bio-economic model. The performance data were obtained from Animal Breeding Center of Iran and management and economic data were collected through preparation of a questionnaire and interviews with farmers. The results showed profit per head of ewe in the strategy of one lambing per year and three births in two years was 1723376 and 3429140, respectively. In both strategies, feeding considered more than 75 percent of total costs and the sales of meat with 98.5% had the highest percentage of total costs and revenues. In addition, in both strategies, relative economic coefficient of the number of lambs born per ewe had the highest relative economic value and wool produced for per ewe had the lowest relative economic value. Litter size and conception rate were the most important traits in the breeding objective for ewe in village system. Birth weight, weaning weight, yearling weight and survival at 3 and 12 months of age were the most important traits in the breeding objective for ewe lamb in village system. The strategy of three lambings in two years was superior to one lambing per year strategy due to the increase in the number of lambs for consumer sales. https://ar.guilan.ac.ir/article_3182_ec3ff305ce96c95d53a47f822d03554d.pdf