Qualitative characteristics of frozen-thawed semen (normal and sexed) from sires of the Holstein black-and-white breed and the age of puberty of the heifers born from them.
Submitted by Гость (not verified) on Tue, 07/09/2024 - 16:45A study was carried out to assess the quality of frozen-thawed semen using the sex separation method and the traditional method in a comparative aspect, and the authors believe that the work will be of some interest to specialists in zootechnical and biological fields, as well as to veterinary specialists. The work was carried out at the Federal Research Center for Animal Husbandry named after Academy Member L.K. Ernst and on the basis of LLC “Agrofirma Zarya”, Bogorodsky district, Nizhny Novgorod region in the period from 2017 to 2022. usng the semen of eight sires.