PREGNANCY FAILURE IN FRIESIAN HOLSTEIN COWS USING ALBUMIN SEDIMENTATION METHOD OF FROZEN SEMEN UN-SEXED AND SEXED Tiara Durriyatul Ilmy Siregar (a*), Putri Utami (b), Aulia Puspita Anugra Yekti (c), Nurul Isnaini (c), Sri Wahjuningsih (c),Trinil Susilawati (c)
a) Post Graduate Student of Animal Reproduction, Faculty of Animal Science, Brawijaya University, Malang, 65145 * tiarasiregar[at]student.ub.ac.id
b) Doctoral student of Animal Reproduction, Faculty of Animal Science, Brawijaya University, Malang, 65145
c)Lecturer of Animal Reproduction, Faculty of Animal Science, Brawijaya University, Malang, 65145
Abstract
This research aimed to determine the difference and decrease in the success of artificial insemination using un-sexed frozen semen and sexed frozen semen in the albumin sedimentation method regarding changes in NRR-1 to NRR 2 and NRR 2 to CR. The material 78 Friesian Holstein crossbreed cattle. 39 PFH cattle were inseminated using frozen semen un-sexed,39 inseminated using sexed frozen semen in the albumin sedimentation method.The method study is experimental, collecting primary and secondary data by direct observation in the field. The results the NRR-1 for sexed frozen semen was 95%, NRR-2 87%, resulting in a decrease in sexed semen from NRR-1 to NRR-2 by 8%,un-sexed frozen semen, NRR-1 was obtained by 75% . NRR-2 was 64%,decrease of 11%. In sexed cement, a CR of 62%,resulting in a reduction from NRR-2 to a CR of 25%, while in un-sexed frozen semen, a CR was obtained of 46%, resulting in a decrease from NRR-2 to a CR of 18%. Based on the results of this study, it was concluded that the reduction of the success of artificial insemination using un-sexed frozen semen and sexed frozen semen in the albumin sedimentation method is better from NRR-1 to NRR-2 than NRR-2 to CR.
