Koesnoto Soepranianondo
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Uji Aktivitas Pertumbuhan Enterobacter cloacae Selulolitik Aerob Rumen-1 Isolat Asal Limbah Cairan Rumen Sapi Peranakan Ongole (GROWTH ACTIVITY ASSAY OF CELLULOLYTIC BACTERIA ENTEROBACTER CLOACAE SAR 1 (CELLULOLYTIC AEROB RUMEN 1) ISOLATED FROM ONGOLE CRO Tri Nurhajati; Koesnoto Soepranianondo; Widya Paramita Lokapirnasari
Jurnal Veteriner Vol 17 No 3 (2016)
Publisher : Faculty of Veterinary Medicine, Udayana University and Published in collaboration with the Indonesia Veterinarian Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (103.273 KB)

Abstract

This study aimedto know the growth activityofcellulolytic bacteria EnterobactercloacaeSAR 1isolatedfrombovinerumen fluidwaste. Isolates that had been cultured were taken as much as 10 mL and thentransferred to100 mL growth medium in Erlenmeyer flask. Culturesuspensions were incubated in a shakerincubator (37°C, 120 rpm). Optical density was measured at ë 600 nm by taking as much as 1 mLsampling with interval of two hours for 24 hours (hour 0; 2; 4; 6; 10; 12; 14; 16; 18; 20; 22; 24). The firstsampling was done at 0thhour and continued until OD values †showed a clear decline. Optical density wasmeasured with a UV-Vis spectrophotometer at wave length ë 600 nm. Growth curve was obtained from theresult of absorbance measurement on the time. Optimum growth production of E.cloacae SAR 1 occurredat the 12thhoursof incubation, optimum temperature of 35°C and optimum pH 6.
Effect of α-tocopherol supplementation in diluents on the motility, viability and plasma membrane integrity of Simmental bull spermatozoa after cooling Sarah Azura; Hermin Ratnani; Suherni Susilowati; Mas'ud Hariadi; Abdul Samik; Koesnoto Soepranianondo
Ovozoa : Journal of Animal Reproduction Vol. 9 No. 1 (2020): Ovozoa : Journal of Animal Reproduction
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (923.396 KB) | DOI: 10.20473/ovz.v9i1.2020.1-6

Abstract

Semen storage in cold temperatures might cause an increase in reactive oxygen species (ROS) production. This condition resulted in spermatozoa damage and quality decrease. This study was conducted to investigate the effects of α-tocopherol supplementation in diluents on the motility, viability, and plasma membrane integrity of Simmental bull spermatozoa after cooling. Semen samples were diluted in skim milk egg yolk supplemented with 0, 0.5, 1.0, and 1.5 mM α-tocopherol respectively for control, Tl, T2, and T3. Spermatozoa were evaluated for their motility, viability, and membrane integrity in cooling temperature (5°C). The daily evaluation showed that 1.5 mM α-tocopherol was the best in maintaining motility, viability, and plasma membrane integrity, while 1.0 mM α-tocopherol was only good for maintaining viability. Therefore, it can be concluded that α-tocopherol at the concentration of 1.5 mM was an efficient antioxidant supplement for Simmental cattle semen in skim milk egg yolk diluent.