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No presente trabalho, são apresentados dados sobre a condição corporal (CC) e a idade das ovelhas de um rebanho ovino do Rio Grande do Sul, no início do encarneiramento e sua relação com a percentagem de prenhez (PP). As PP e a CC média observadas foram 90,4% e 2,84 (±0,57) respectivamente. A CC média das ovelhas prenhes (P) e vazias (V) foram: P 2,86 (±0,56) e V 2,64(±0,59), tendo sido observada diferença significativa (p< 0,001). A PP por categoria de CC das ovelhas, no início do encarneiramento, mostrou que, conforme aumenta a CC, aumenta a PP, chegando aos valores de 92% e 98% no grupo de ovelhas com CC 3,0 e 4,0 respectivamente. Finalmente, a análise de regressão logística realizada mostrou não haver relação da idade da ovelha na taxa de prenhez, confirmando, entretanto, associação positiva entre prenhez e CC (p = 0,002). In this study, the relationship between score of body condition (BC) at the beginning of mating and ewes age with the pregnancy rate (PR) of a Corriedale sheep flock, grazed in the State of Rio Grande do Sul- Brazil are presented and discussed. The BC and PR observed on the flock were 90.4% and 2.84(±0.57) respectively. The mean of BC of the pregnant (P) and non-pregnant (NP) ewes was P 2.86 (±0.56) and NP 2.64(±0.59). The values of P and NP have shown statistic significance (P< 0.001). The results showed, also, that the PR increase as the BC increases, reaching 92 and 98% on the group of ewes with BC 3.0 and 4.0 respectively. Finally, the regression logistic analysis from the data showed that the age of the ewes have no relation with the PR and a positive relationship between pregnancy and body score condition ( p=0.002)

Relação entre a condição corporal e a idade das ovelhas no encarneiramento com a prenhez