Artificial insemination using sexing semen is expected to produce calves with the desired sex. One sperm method percoll density gradient centrifugation method. This study aimed determine changes and relationship between motility acrosome reaction after process centrifugation. The material used was of ±5 years old Ongole crossbred bull a bodyweight ±700 kg as many three bulls mass 2+ individual ...

The development of breeding tools, such as genomic selection and sexed semen, has progressed rapidly in dairy cattle during the past decades. In combination with beef these tools are adopted increasingly at herd level. Dairy crossbreeding is emerging, but economic genetic consequences combining it other relatively unknown. We investigated 5 different semen schemes where 0, 50, 90% heifers; 50% ...

The scale of sexed semen use to avoid the birth of unwanted bull calves in the UK dairy industry depends on several economic factors. It has been suggested in other studies that calf gender may affect milk yield in Holsteins- something that would affect the economics of sexed semen use. The present study used a large milk recording data set to evaluate the effect of calf gender (both calf born ...