生长和繁殖性能性状是分析育种系统整体性能的重要经济指标。这项研究旨在评估两只阿尔及利亚绵羊(Rumbi和Hamra)在生长和繁殖性能方面的比较性能,以及品种等因素的影响,出生季节,母亲的出生模式和年龄在半集约化育种系统中表现出来。分别在Tiaret和Saida实验站繁殖的577只Rumbi母羊和1328只Hamra母羊的繁殖性能,使用性能监控数据进行了分析。Rumbi和Hamra品种的生育率分别为87.14%和78.8%,实际上相似(p>0.05)。Hamra品种在出生和断奶时的凋落物大小明显高于Rumbi品种(p<0.05)。Hamra品种的断奶死亡率明显高于Rumbi品种,平均为22.60%对14.94%(p<0.05)。因素的影响表明,母亲的年龄和出生季节对Hamra和Rumbi品种的繁殖性能有非常显着的影响,p<0.0001。出生时的产仔数,断奶和生育时的产仔数。年份因素对繁殖性能有显着影响,Hamra品种的p=0,013,Rumbi品种的p=0,031。这项研究的结果表明,伦比羔羊出生时比哈姆拉羔羊重。Hamra品种的观察值分别为4,86公斤和3,10公斤,差异非常显著(p<0.0001),因此,Rumbi羔羊的平均每日断奶前体重增加高于Hamra羔羊,在0,195公斤/天与0,113公斤/天Hamra羔羊,具有很高的意义(p<0,0001)。因素的影响表明,有显著的影响母亲的年龄对ADGs(0-30),Hamra和Rumbi品种的(30-70)和(70-90),分别为p=0,034和p=0,02。出生模式效应对ADGs也有非常显著的影响(0-30),(30-70)和(70-90)仅适用于p=0.004的Hamra品种。对于p>0.05的Hamra和Rumbi品种,出生体重对ADG的影响均不显着。根据这项研究的结果,Hamra品种具有优越的繁殖潜力,而Rumbi品种具有优越的生长能力。哈姆拉品种在生育和多产方面表现出更好的母性技能,而Rumbi品种表现出更好的羔羊生长性能。因此,这些结果可用于选择性绵羊育种,考虑到环境的随机影响和每个品种的潜力。
Growth and reproductive performance traits are important economic indicators for analyzing the overall performance of breeding systems. This study aims to evaluate the comparative performance of two Algerian sheep (Rumbi and Hamra) in terms of growth and reproductive performance, and the effect of factors such as breed, season of birth, mode of birth and age of the mother on this performance in a semi-intensive breeding system. The reproductive performance of 577 Rumbi ewes and 1328 Hamra ewes bred at the Tiaret and Saïda experimental stations respectively, was analyzed using performance monitoring data. Fertility rates for the Rumbi and Hamra breeds of 87.14% and 78.8% respectively were practically similar (p > 0,05). Litter size at birth and weaning was significantly higher in the Hamra breed than in the Rumbi breed (p < 0,05). Weaning mortality was significantly higher in the Hamra breed than in the Rumbi breed, with an average of 22.60% versus 14.94% (p < 0,05). The effect of factors showed that there was a highly significant effect of the mother\'s age and season of birth on the reproductive performance of the Hamra and Rumbi breeds with a p < 0.0001 on fertility, litter size at birth, litter size at weaning and fertility. There was a significant effect of the year factor on reproductive performance with p = 0,013 for the Hamra breed and p = 0,031 for the Rumbi breed. The results of this study showed that Rumbi lambs were heavier at birth than Hamra lambs. The values observed were 4,86 kg versus 3,10 kg for the Hamra breed, with a highly significant difference (p < 0,0001), so that the average daily pre-weaning weight gains of Rumbi lambs were higher than those of Hamra lambs, at 0,195 kg/day versus 0,113 kg/day for Hamra lambs, with a high significance (p < 0,0001). The effect of factors showed that there was a significant effect of the mother\'s age on the ADGs (0-30), (30-70) and (70-90) of the Hamra and Rumbi breeds with a p = 0,034 and p = 0,02 respectively. There was also a highly significant effect of the birth mode effect on ADGs (0-30), (30-70) and (70-90) only for the Hamra breed with a p = 0,004. The effect of the birth weight on ADGs was not significant for both Hamra and Rumbi breeds with a p > 0,05. According to the findings of this study, the Hamra breed had superior reproductive potential and the Rumbi breed had superior growth. The Hamra breed showed better maternal skills in terms of fertility and prolificacy, while the Rumbi breed showed better lamb growth performance. Consequently, these results could be used for selective sheep breeding, taking into account the random effects of the environment and the potential of each breed.