Answers are grounded in this paper and cite their sources.
Ejaculates from 48 bulls comprising equal numbers of Aryshire, Fresian, Guernsey and Jersey breeds at an artificial insemination station in Kenya were analysed. The effect of age, breed and month of the year on semen volume, spermatozoa concentration and motility were studied. The second ejaculate volumes, concentrations and motility were significantly higher (p The Kenya Veterinarian Vol. 18 (1) 1994: pp. 8-11
No takes yet. Share an insight, caveat, or question.
Mwangi et al. (1994) studied this question.
Synapse has enriched 9 related papers. Consider them for comparative context: