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Effects of weaning age on growth performance of Lori-bakhtiari lambs in traditional rearing system | ||
| علوم و فنون دامپروری | ||
| Volume 9, Issue 35, September 2020, Pages 23-32 PDF (1.37 M) | ||
| DOI: 10.22092/aasrj.2020.342682.1200 | ||
| Author | ||
| MOHSEN BAGHERI* | ||
| chaharmahal and bakhtiari agricultural and natural resources researches and education | ||
| Abstract | ||
| This study was aimed to determine the appropriate weaning age of Lori-Bakhtiari male and female lambs in the traditional rearing system. Sixty male and female lambs, 60±5 days of age, were selected for the experiment. Lambs in each sex were randomly assigned to one of three groups including 1-weaning at 2 months of age 2-weaning at 3 months of age and 3-weaning at 4 months of age. The lambs were reared until 6 months of age and weighed monthly. The average daily gain of male and female lambs in the first group in the first month after weaning (180 and 173 g/day, respectively) were significantly lower (p < 0.05) than male and female lambs in the other two groups (230 and 193 g/day, respectively). From 3 to 4 months of age, an average daily gain of male lambs in the first group (223 g/day) numerical were higher than the male lambs in group 2 (200 g/day) and group 3 (206 g/day). The average weight of male and female lambs in the different treatments group at 6 months of age was not significant. Therefore, in the traditional rearing system, Lori-Bakhtiari male and female lambs can be weaned at two months of age. | ||
| Keywords | ||
| lamb; Weaning age; Weight; gain | ||
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