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Interkorelasi antara persentase konsentrat, kadar urea nitrogen susu dan beberapa variabel sapi perah Friesian Holstein Rizal, Syaiful; Utama, Suzanita; Utomo, Budi; Susilowati, Suherni; Mulyati, Sri; Ismudiono, Ismudiono; Soeharsono, Soeharsono
Ovozoa: Journal of Animal Reproduction Vol. 9 No. 2 (2020): Ovozoa: Journal of Animal Reproduction
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/ovz.v9i2.2020.53-59

Abstract

The purpose of this study was to identify the correlation among the percentage of feed concentrate, milk urea nitrogen (MUN), milk production, services per conception (S/C), calving interval (CI), and days open (DO) of Holstein Friesian cows on smallholder farms. Twenty four, 4-6 year old, non-pregnant, lactating cows, with body condition score (BCS) 5-7, having given birth 2-5 times were recorded their daily milk production, S/C, CI, DO, and the percentage of concentrate in feed given. Milk samples were collected to measure MUN. The correlation calculation among the six variables resulted 15 correlation values, ten of which were not significantly different (p >0.05), including the correlation between the percentage of concentrate and milk production on MUN. The other five correlation values were significantly different (p <0.05). The increase in concentrate intake was moderately correlated (r = 0.52), affecting 27.04% of the increase in milk production, and weakly correlated (r = 0.39), affecting 15.21% of the increase in S/C. The increase in milk production had a very strong correlation (r = 0.82), affecting 67.24% of the increase in S/C. The increase in S/C had a strong correlation (r = 0.61), affecting 37.21% of the increase in CI. The increase in CI was also affected 38.44% by the increase in milk production with a strong correlation (r = 0.62). It could be concluded that dairy cows with higher feed concentrate intake would be followed by an increase in milk production, but had a negative effect on reproduction in the form of increased S/C and CI.
Relationship between the value of the estrous detector measurement result and serum progesterone level in Etawa crossbred goats after estrous synchronization Triagil, Annisa Lita; Ismudiono, Ismudiono; Lestari, Tita Damayanti; Samik, Abdul; Utomo, Budi; Setiawan, Boedi
Ovozoa: Journal of Animal Reproduction Vol. 9 No. 3 (2020): Ovozoa: Journal of Animal Reproduction
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/ovz.v9i3.2020.82-85

Abstract

This study was conducted to determine the relationship between the estrous detector's reading value (Draminski®, DramiÅ„ski S.A, Poland) and serum progesterone levels on Etawa crossbred does. Eighteen healthynon-prehnant Etawa crossbreds does weighing 20-25 kg, in their first parity were used in this study. The does were divided equally into two groups. In the two groups, the does were synchronized their estrus by means of intramuscular and intravulvar injection of 7.5 mg prostaglandin FÉ‘ (PGF2É‘) twice in 11-day intervals. After the second injection, the estrous detector value measurement, visual observation of the estrus sign, and blood sampling were conducted for five days. The blood sample was processed into the serum to examine for progesterone levels by ELISA. The data analysis was using the simple correlation method on SPSS type 23 for windows. The result showed that a positive relationship (p <0.05) with coefficient correlation (r) was 0.609 between the values of the estrous detector measurement with serum progesterone levels. It could be concluded that the estrous detector's low value indicates that the Etawa crossbred was in the estrus phase and followed by the decreasing of progesterone level but not reaching the basal level.
Serum Progesterone profile of pregnant Ettawa crossbred does at day-0, -21, -42, -63 and -84 Bellani, Ayu Aprodhita Cintya; Ismudiono, Ismudiono; Hariadi, Mas'ud; Lokapirnasari, Widya Paramita
Ovozoa: Journal of Animal Reproduction Vol. 10 No. 2 (2021): Ovozoa: Journal of Animal Reproduction
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/ovz.v10i2.2021.53-58

Abstract

This study aimed to determine the progesterone concentrations of Ettawa crossbred does at day-0, -21, -42, -63, and -84 after mating. Five Ettawa crossbred does were injected with PGF2α twice with an interval of 11 days for estrous synchronization followed by natural mating on day-3 after the second PGF2α injection. Blood was collected through the jugular vein for the measurement of serum progesterone concentrations using ELISA, whereas pregnancy was diagnosed at 90 days after mating by abdominal palpation. The results showed that all does were on estrus onthethird day after the second PGF2α, three of them diagnosed to be pregnant following mating. The progesterone concentration at day-0 was 1.52 ± 0.33 ng/mL, increased (p <0.05) to 7.08 ± 1.02 and 5.50 ± 2.82 ng/mL at day-21 and day-42, and increased (p <0.05) again to 12.01 ± 5.30 and 12.04 ± 0.30 ng/mL at day 63 and day 84, respectively. There was no significant difference in progesterone concentrations between day 21 and day 42 and between day 63 and day 84. It could be concluded that there was a biphasic increase of progesterone concentrations of the pregnant Ettawa crossbred does, i.e. from day-0 to day-21/day-42 and from day-21/day-42 to day-63/day-84.