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All Journal AL-HAYAT: Journal of Biology and Applied Biology Jurnal Kedokteran Hewan
Oriza Savitri Ariantie
Bagian Klinik Hewan, Fakultas Kedokteran Hewan, Universitas Udayana, Bali
Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Veterinary

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Understanding Orangutan Reproduction: Biological Aspects, Climate Change, and Contaminant Exposure Saka, Raisa Tatum; Sjahfirdi, Luthfiralda; Ariantie, Oriza Savitri
Al-Hayat: Journal of Biology and Applied Biology Vol. 8 No. 1 (2025)
Publisher : Fakultas Sains dan Teknologi, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/ah.v8i1.26876

Abstract

Orangutans are arboreal primates and the only great apes native to Asia. Reproduction is crucial for the survival and long-term viability of orangutan populations. This review explores orangutan reproductive biology, focusing on its key features and the potential influences of environmental change. Orangutan (Pongo spp.) reproduction is marked by delayed sexual maturation, long interbirth intervals, and intensive maternal care, reflecting a slow life history strategy. Male bimaturism produces flanged and unflanged forms, each with different mating strategies shaped by social context. Female strategies, such as mate selection and resistance to coercive mating, play a critical role in reproductive outcomes. Climate change, through shifts in rainfall and temperature, is expected to affect food availability, potentially disrupting reproductive timing and offspring survival. The increasing presence of nanoparticles is also considered an emerging threat, though data specific to primates remains limited. Conservation efforts have focused on habitat protection, conflict mitigation, and ex-situ management, including rehabilitation and management of captive individuals in zoos; however, cryopreservation remains largely unexplored.
Understanding Orangutan Reproduction: Biological Aspects, Climate Change, and Contaminant Exposure Saka, Raisa Tatum; Sjahfirdi, Luthfiralda; Ariantie, Oriza Savitri
Al-Hayat: Journal of Biology and Applied Biology Vol. 8 No. 1 (2025)
Publisher : Fakultas Sains dan Teknologi, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/ah.v8i1.26876

Abstract

Orangutans are arboreal primates and the only great apes native to Asia. Reproduction is crucial for the survival and long-term viability of orangutan populations. This review explores orangutan reproductive biology, focusing on its key features and the potential influences of environmental change. Orangutan (Pongo spp.) reproduction is marked by delayed sexual maturation, long interbirth intervals, and intensive maternal care, reflecting a slow life history strategy. Male bimaturism produces flanged and unflanged forms, each with different mating strategies shaped by social context. Female strategies, such as mate selection and resistance to coercive mating, play a critical role in reproductive outcomes. Climate change, through shifts in rainfall and temperature, is expected to affect food availability, potentially disrupting reproductive timing and offspring survival. The increasing presence of nanoparticles is also considered an emerging threat, though data specific to primates remains limited. Conservation efforts have focused on habitat protection, conflict mitigation, and ex-situ management, including rehabilitation and management of captive individuals in zoos; however, cryopreservation remains largely unexplored.
THE PRODUCTION OF FREEZE-DRIED EGG YOLK POWDER AND ITS EFFECT ON THE QUALITY OF GARUT RAM LIQUID SEMEN Ariantie, Oriza Savitri; Amrozi, Amrozi; Yusuf, Tuty Laswardi; Rochman, Nurul Taufiqu; Purwantara, Bambang
Jurnal Kedokteran Hewan Vol 15, No 2 (2021): June
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/j.ked.hewan.v15i2.19669

Abstract

This research aims to evaluate the protective potency of freeze-dried egg yolk powder on Garut ram sperm during the liquid semen preservation process. Semen with good sperm quality was divided into three groups and diluted using the following Tris diluents: fresh egg yolk-Tris (FEY-Tris), commercial egg yolk powder-Tris (CEY-Tris), and freeze-dried egg yolk powder-Tris (DEY-Tris). Semen that had been diluted was observed every 12 hours until sperm progressive motility was 50%. Sperm quality was tested for progressive motility percentages, viability, intact plasma membrane (IPM), and intact acrosome (IA). Fresh egg yolk had a particle size of 14460.00330.76 nm, with polydispersity index value (PI) and zeta potential (ZP) being 1.000.11 and -9.220.30 mV, respectively. The particle size of commercial egg yolk powder was 877.90168.86 nm with PI value 0.340.04 and ZP-28.71.24 mV. The particle size of freeze-dried egg yolk powder was 1296.0086.73 nm, with PI value 0.700.04 and ZP-34.50.64 mV. Progressive motility percentage showed that DEY-Tris diluent managed to survive to 51.116.06% for 168 hours, compared to FEY-Tris (51.256.74%) which survived for 156 hours, although no longer than CEY-Tris diluent (53.476.33%) which survive for 180 hours (P0.05). Higher sperm motility was also supported by viability percentage, IPM, and IA, which were all higher (P0.05). In conclusion, freeze dried egg yolk powder mixed with Tris buffer was able to maintain sperm quality during the liquid semen preservation process.
Co-Authors Amrozi Bambang Purwantara LUTHFIRALDA SJAHFIRDI Nurul Taufiqu Rochman Saka, Raisa Tatum Saka, Raisa Tatum TUTY LASWARDI YUSUF