A study was designed to investigate some of the changes in bovine semen characteristics following the extirpation of the seminal vesicles of four young bulls. Ejaculates from each bull were pooled on each collection day until a minimum of 5 nil. of semen was obtained. The pooling of ejaculates of each bull was necessitated by the number of tests conducted on each collection day. These characteristics were studied by physical evaluation techniques and biochemical analyses of pooled ejaculates collected before and after seminal vesiculectomy. The physical evaluations included the per cent of motile spermatozoa, the degree of progressive motility, semen pH, volume, concentration, and freezability. Biochemical analyses were conducted on semen fructose, semen citric acid, and five seminal amino acids--namely, glutamie acid, glycine, alanine, serine, and aspartic acid.
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Hess et al. (1960) studied this question.
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