Growth dynamics and altitude effect on growth performance of Ouled Djellal lambs during the pre-weaning period
| Autor: | K. Mohammedi, Z. Laiadhi, M. Titaouine |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Agricultural Science and Technology, Vol 14, Iss 4, Pp 12-16 (2022) |
| Druh dokumentu: | article |
| ISSN: | 1313-8820 1314-412X |
| DOI: | 10.15547/ast.2022.04.043 |
| Popis: | Abstract. This study evaluates the growth dynamics and the effect of altitude on different growth phases of pre-weaned Ouled Djellal lambs in northeastern Algeria. Forty-nine lambs born in the spring to multiparous ewes were weighed, and their average daily gain was calculated at different ages (at birth, D 30, 60, 90 and 120). The results show that maximum growth occurs during the lamb’s first month of life at 200 g/day. Highly positive and significant correlations were recorded between D 90 and D 120 (0.94), D 60 and D 120 (0.88), D 60 and D 90 (0.87) and D 30 and D 90 (0.77). Concerning the altitude effect, lambs born in low altitude regions show a better growth performance than lambs born in high altitude regions, with a significant difference (P0.05) noticed for D 90 and D 120, which confirms that the Ouled Djellal breed is a typical breed of the steppe and the high plains. |
| Databáze: | Directory of Open Access Journals |
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