Quirin R, Leal T M, Guimaraes Filho C
CIRAD-EMVT, Maisons-Alfort, France.
Rev Elev Med Vet Pays Trop. 1993;46(3):495-502.
A retrospective survey of goat reproductive performance was carried out in a sample of 1,317 females kept in traditional rearing conditions in a small semi-arid region of Northeastern Brazil. The study involved 2,155 kiddings and the analysis of the abortion problem was made according to retrospectively measured factors such as year of kidding, doe age, kidding order, age at kidding and type of farm. The methodology used appealed to the farmer's memory. The results showed that abortion was a constant problem in the region (13%). It affected more frequently young females and mainly at first kidding (20.7%), irrespectively of age. The year of kidding seemed to influence the abortion rate, but this was probably due to the large climatic variability. Abortion rates varied according to farms, but the difference was not significant. This variability could be explained by the variety of edaphic conditions of the region studied.
对巴西东北部一个半干旱小地区传统饲养条件下的1317只母山羊进行了繁殖性能的回顾性调查。该研究涉及2155次产羔，并根据产羔年份、母羊年龄、产羔顺序、产羔时年龄和农场类型等回顾性测量因素对流产问题进行了分析。所采用的方法依赖于农民的记忆。结果表明，流产是该地区一个持续存在的问题（13%）。它更频繁地影响年轻母羊，主要是在首次产羔时（20.7%），与年龄无关。产羔年份似乎影响流产率，但这可能是由于气候的巨大变异性。流产率因农场而异，但差异不显著。这种变异性可以用所研究地区土壤条件的多样性来解释。
