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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Ilmiah Kedokteran Wijaya Kusuma Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya Indonesian Journal of Obstetrics and Gynecology (Majalah Obstetri dan Ginekologi Indonesia) EDUNursing
Harry Kurniawan Gondo
Medical Faculty of Udayana University/ Sanglah General Hospital Denpasar - Bali
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Health Professions Medicine & Pharmacology Nursing Public Health

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The Use of Natural Phenomenon in Obtaining Pregnant Rats and Mice as Experimental Animals with The Same Gestational Ages Sardjono, Teguh Wahju; Gondo, Harry Kurniawan; Nugraha, Rivo Yudhinata Brian; Putri, Anisa Tiara; Effendy, Meyland Citra Oktri Sienty
Journal of Tropical Life Science Vol 9, No 3 (2019)
Publisher : Journal of Tropical Life Science

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Abstract

Hormonal oestrus synchronization is often used to obtain the same gestational ages animal models, but it may not physiologic nor practical. This research was conducted to find out a simple method in obtaining physiologic pregnant experimental animals. We used 120 female rats and mice each, divided into 16 groups with 15 members each. They were classified according to the state of parities, pair or group mating, and synchronization of oestrous. The estrous synchronization is done by utilizing the natural phenomenon (Lee-Boot, Pheromone, and Whitten effect). All nulliparous and multiparous models then were simultaneously mated for one night in pairs (1:1) or in groups (1:5) subsequently. Pregnancy rates were noted based on the number of models delivering pups on day 19-23 post-mating. The highest pregnancy rate was noted in group of multiparous, synchronized and monogamous rats (86.7%), followed by nulliparous, synchronized and monogamous rats (73.3%) and multiparous, synchronized and monogamous mice (60%) (p<0.05). Synchronization of the estrous and monogamous mating of rats or mice had significant roles in pregnancy rates (p<0.05). To get a high number of pregnant rats or mice models, we suggest to use the multiparous, estrous synchronized and monogamous simultaneous mating within one night.
Co-Authors Effendy, Meyland Citra Oktri Sienty Elizabeth Haryanti Nugraha, Rivo Yudhinata Brian Putri, Anisa Tiara Teguh Wahju Sardjono Wardhani, Mira Kusuma