Dowsett K F, Pattie W A
J Reprod Fertil Suppl. 1982;32:1-8.
A study of stallion fertility was conducted on commercial studs in eastern Australia over 4 breeding seasons (1974/75-1977/78). Data from 47 stallions (66 stallion seasons) aged 2-26 years and representing 7 breeds and 1664 mares were used to relate seminal characteristics to fertility. Percentage pregnancies per service was the most sensitive measure of fertility with stallions on commercial studs. Breed and age of stallion, breeding season and the referral status of the stallion ('suspect' or 'normal') had significant (P less than 0.01) effects on fertility. The semen characteristics that were clearly associated with percentage pregnancies per service were: total volume, gel-free volume, sperm concentration, total numbers of spermatozoa and total number of live spermatozoa. Approximate threshold levels for these characteristics are presented which could provide a diagnostic basis for the classification of stallions as being suitable or doubtful for breeding purposes.
在澳大利亚东部的商业种马场，对种公马的繁殖力进行了为期4个繁殖季节（1974/75 - 1977/78）的研究。研究使用了47匹年龄在2至26岁之间、代表7个品种的种公马（66个种公马繁殖季）以及1664匹母马的数据，以关联精液特征与繁殖力。在商业种马场中，每次配种的妊娠百分比是衡量种公马繁殖力最敏感的指标。种公马的品种、年龄、繁殖季节以及种公马的推荐状态（“可疑”或“正常”）对繁殖力有显著（P < 0.01）影响。与每次配种妊娠百分比明显相关的精液特征包括：总体积、无凝胶体积、精子浓度、精子总数和活精子总数。文中给出了这些特征的近似阈值水平，可为种公马是否适合繁殖目的的分类提供诊断依据。
