a comparison of breeding objective of native black goat in different rearing systems 1. the performance of traits and cost-profit analysis

production, reproduction, management and economic parameters resulted from recordings of 5 flocks comprised of 720 heads of native goats during annual cycle of reproduction in transhumance, village and farming systems were employed to determine the performance of traits, cost-profit analysis as well as breeding objective. the overall mean for number of salable kid per goat in transhumance, village and farming systems were 0.35, 0.52 and 1.20, respectively. the mean kid body weights in sale time were 22.50, 28.50 and 31.86 kg, respectively. the mean milk salable shares per goat were 14.50, 50.50 and 60.00 kg, respectively. the traits appeared in profit equation were survival rate in goat, conception rate, kidding frequency, kidding rate, kid survival rate to weaning, kid survival rate to yearling, kid live weight at sale, body weight of goat and milk yield (breeding objective). the average profit per goat per year were, estimated as 55427, 103162 and 733654 rials for transhumance, village and farming systems. the economic efficiencies were calculated as 1.10, 1.09 and 1.57, respectively. the highest and lowest profit occurred in farming and transhumance systems, respectively. the economic efficiency in village system was lower than in the transhumance system.