Some Semen Characteristics in Dairy Bulls Ejaculated with Artificial Vaginas at Varying Temperatures

Changes in the characteristics of turkey ejaculated semen and ductus deferens semen with repeated ejaculations.

Studies were conducted to assess (a) the pH and motility of semen removed from the ductus (d.) deferens and receptaculum from males sexually rested 1 wk, (b) the pH, motility, and sperm concentration of semen after each successive ejaculation (ejaculated 3 or 5 times at 30-60 min intervals) and (c) the rate of semen replenishment and the fertility of the replenished semen after emptying the d. ...

Semen and Sperm Characteristics of Swamp Buffalo (Bubalus bubalis) Bulls for Artificial Insemination in Thailand, in Relation to Season

Koonjaenak S. 2006. Semen and Sperm Characteristics of Swamp Buffalo (Bubalus bubalis) Bulls for Artificial Insemination in Thailand, in Relation to Season. Doctoral thesis. ISSN 1652-6880, ISBN 91-576-7263-6 In this thesis work we tested the hypothesis that tropical climatic conditions affect the quality of fresh and frozen-thawed (FT) spermatozoa from swamp buffalo bulls used for artificial i...

Factors affecting the quality of semen of A.I. dairy bulls in South Africa

Deleterious Recessive Genes in Dairy Bulls Selected at Random.

HE genetics of farm mammals have not been investigated in a manner T comparable to the intensive studies made, during the last forty years, with Drosophila, laboratory rodents, and chickens. Nevertheless, a large number of mutant genes have been reported in farm mammals. These mutants have been discovered more or less by chance when sufficient inbreeding has brought them to light. Many more hav...

Identifying factors affecting age at first semen freezing and age at first semen use in Sahiwal bulls

AIM The objective of the study was to evaluate the effects of non-genetic factors on reproduction traits viz. age at first semen freezing and age at first semen use of breeding bulls in Sahiwal bulls by fitting least-squares analysis. MATERIALS AND METHODS The information on reproduction traits of 43 Sahiwal breeding bulls belonging to 8 sets of Sahiwal breeding program at Indian Council of A...