Fertilizing ability of the texel ram-sires thawed sperm under different modes of their use

• Autorzy: Hrymak K. , Vovk S. , Mykola S.
• Języki publikacji: EN

Abstrakty

EN

The article presents the results of experimental studies on the effect of the quality of ram-sires’ thawed sperm during the breeding and non-breeding periods under different modes of using the breeders. It is established that the acrosome preservation under the mode of using the ram-sires to receive 4 ejaculates per week compared to 6 and 8 ejaculates during the nonbreeding period was higher by 3.5 and 6.0%, respectively, and by 2.5 and 5.0 percent during the breeding period. Kinetic parameters of sperm motion during both periods of seasonal activity were also higher under the mode of receiving 4 ejaculates per week by 2.6–14.0 percent on average. The fertilizing ability of thawed sperm from the first insemination of ewes under the mode of receiving 4 ejaculates per week compared to the above mentioned modes was higher by 3.2 and 7.2% during the non-breeding period, and by 7.3 and 10.6% during the breeding period; while fertility at lamb birth – by 1.7 and 3.8%, and by 1.0 and 8.1 percent, respectively.

• Wydawca: -
• Czasopismo: Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
• Rocznik: 2019
• Tom: 49
• Numer: 1(348)
• Opis fizyczny: p.87–94,ref.

Twórcy

autor

Hrymak K.

• Laboratory of Biotechnology of Reproduction, Institute of Animal Biology, National Academy of Agricultural Sciences of Ukraine, Lviv, Ukraine

autor

Vovk S.

• Department of Livestock, National Academy of Agricultural Sciences of Ukraine, Lviv, Ukraine

autor

Mykola S.

• Laboratory of Biotechnology of Reproduction, Institute of Animal Biology, National Academy of Agricultural Sciences of Ukraine, Lviv, Ukraine

Identyfikatory

DOI

10.21005/AAPZ2019.49.1.09