Gavojdian D, Budai C, Cziszter L T, Csizmar N, Javor A, Kusza S
Banat's University of Agricultural Sciences and Veterinary Medicine 'King Michael I of Romania', Faculty of Animal Science and Biotechnologies, Timisoara 300645, Romania .
Asian-Australas J Anim Sci. 2015 Apr;28(4):599-603. doi: 10.5713/ajas.14.0659.
The objective of the current pilot study was to evaluate the reproductive performance and health indicators in Dorper, White Dorper, and Tsigai breed ewes managed semi-intensively under European temperate conditions. A total of 544 ewe-year units were observed, with ewes (ranging from 1.5 to 8 years of age) managed under identical rearing conditions for a period of two consecutive production cycles (2012 through 2013 and 2013 through 2014). In general, significant (p≤0.001) genotype-related disparities were found in occurrence rates for all health parameters taken into study. Clinical mastitis incidence was significantly lower (p≤0.05) in Dorper (9.4%) and White Dorper (10.8%) breeds compared to that of Tsigai ewes (17.4%). Significant differences (p≤0.05) for lameness were found between Dorper and Tsigai breeds, with occurrence rates of 8.0% and 2.9%, respectively. Incidence for pneumonia and abortion was not influenced (p>0.05) by the ewes' genotype. Litter size was significantly lower (p≤0.05) in White Dorper breed than for Dorper and Tsigai ewes, of 1.21, 1.40, and 1.45, respectively. Conception rates and lambs survival were not affected (p>0.05) by genotype. Results suggest that South African Dorper and White Dorper sheep breeds have adapted well to the specific rearing conditions.
当前这项试点研究的目的是评估在欧洲温带条件下进行半集约化管理的杜泊羊、白杜泊羊和茨盖羊母羊的繁殖性能和健康指标。总共观察了544个母羊年单位，母羊（年龄在1.5至8岁之间）在相同的饲养条件下管理了两个连续的生产周期（2012年至2013年以及2013年至2014年）。总体而言，在所研究的所有健康参数的发生率方面发现了与基因型相关的显著差异（p≤0.001）。与茨盖羊母羊（17.4%）相比，杜泊羊（9.4%）和白杜泊羊（10.8%）品种的临床乳腺炎发病率显著更低（p≤0.05）。杜泊羊和茨盖羊品种之间在跛足方面存在显著差异（p≤0.05），发生率分别为8.0%和2.9%。肺炎和流产的发生率不受母羊基因型的影响（p>0.05）。白杜泊羊品种的产仔数显著低于杜泊羊和茨盖羊母羊，分别为1.21、1.40和1.45。受孕率和羔羊存活率不受基因型的影响（p>0.05）。结果表明，南非杜泊羊和白杜泊羊品种已很好地适应了特定的饲养条件。
