Penelitian ini bertujuan untuk mengetahui perbedaan persentase motilitas dan viabilitas semen kambing Sapera terhadap evaluasi semen segar dan before freezing dengan penambahan pengencer tris kuning telur dan susu skim kuning telur. Metode penelitian ini adalah pengambilan semen, evaluasi semen segar (pemeriksaan makroskopis dan mikroskopis), pengenceran semen, gliserolisasi, ekuilibrasi dan evaluasi before freezing. Penelitian ini terdiri dari P0, P1 dan P2, masing-masing perlakuan terdiri dari sembilan ulangan. P0 adalah semen segar kambing Sapera, P1 adalah semen kambing Sapera+pengencer tris kuning telur dan P2 adalah semen kambing Sapera+pengencer susu skim kuning telur. Data yang diperoleh dengan Uji T2 sampel dependent, membandingkan P0 dan P1 serta P0 dan P2. Data menunjukkan perbedaan sangat nyata (p<0,01) pada perlakuan P0 dan P1 persentase motilitas 76,11%; 65,56% dan viabilitas 82,33%;72,22%. P0 dan P2 persentase motilitas 76,11%;61,11% dan viabilitas 82,33%;67,78%. Hasil tersebut menunjukkan bahwa penelitian persentase motilitas dan viabilitas spermatozoa kambing Sapera mengalami penurunan dari semen segar pada tris kuning telur dan susu skim kuning telur before freezing.

No abstract

The success rate of Artificial Insemination (AI) can be increased by using semen from superior bulls of the desired sex. For meat production purposes, sexed semen used is the male sex, but for milk production, then the female sex is used. This study aimed to determine the effect of incubation time for sexing the sperms using egg white albumin sedimentation method on the quality of Bali bull semen. This study was using a completely randomized design (CRD) with three different incubation time treatments; 25 (T1), 30 (T2) and 35 minutes (T3) with three replications. T0 was used fresh semen as a control without incubation time. The variables measured in this study were the motility and concentration of the sperms before and after sexing. The results of this study showed that the incubation time did not affecting the sperms motility and concentration (P> 0.05). However, motility of the X sexed sperms in T2 is likely higher than in T1 and T3. Contrary, motility of Y sexed sperms in T1 had higher than in T2 and T3. It can be concluded that the incubation time during separation of X and Y sperms using egg albumin sedimentation had no significant effect on sperms motility and concentration.

The research aims to find out profile of crude protein tyrosine kinase on plasma membrane of Merino sheep spermatozoa. The research used fresh semen sample collected using artificial vagina technique, next it was centrifuged to separate spermatozoa from seminal plasma. Then, spermatozoa (pellet) was isolated. After obtaining spermatozoa isolate, analysis on protein tyrosine kinase using SDS-PAGE method was conducted. The method to analyze protein using SDS-PAGE to separate protein based on molecular weight. Analysis on molecular weight was conducted by comparing result of isolate tapes with protein marker tapes. Running on SDS-PAGE gel isolate protein plasma membrane of Merino sheep spermatozoa in the research resulted in 13 protein tapes with average molecular weights of 115.44 kDa; 95.78 kDa; 78.22 kDa; 69.02 kDa; 62.33 kDa; 53.72 kDa; 40.56 kDa; 30.74 kDa; 21.16 kDa; 13.67 kDa; 10.85 kDa; 9.49 and 8.07 kDa kDa. From this result, the second tape with the molecular weight of 95.78 kDa was believed to be protein tyrosine kinase tape however it needs to be confirmed further using Western Blot method.

This case report aims to determine the response of estrus and pregnancy rates in dairy cows with ovarian hypofunction by administering a combination of gonadotropin hormones. The sample used was ten dairy cows that had been calving, were not pregnant, showed no signs of estrus for more than 60 days after the last calving and had ovarian hypofunction based on rectal palpation. All dairy cows were injected 300 IU PG-600, then divided into two groups, each injected with 100 and 300 IU hCG respectively for first group and second group, intramuscularly at the time of insemination. The results showed that the estrus response occurred in all cows, in 6-8 (6.8 ± 0.84) days (first group), and 6-7 (6.2 ± 0.45) days (second group). Trans-rectal palpation pregnancy diagnosis 60 days after artificial insemination showed that all dairy cows in both groups were pregnant. It could be concluded that the treatment of dairy cows suffering from ovarian hypofunction with a combination of 300 IU PG-600 and 100 IU hCG was sufficient to induce 100% estrus rates and 100% pregnancy rates.