Garuda - Garba Rujukan Digital

EFFECTIVENESS OF VARIOUS COMMERCIAL EXTENDERS IN CRYOPRESERVING SEMEN OF LOCAL INDONESIAN RAMS Setiadi, Dedi Rahmat; Magfira; Riwu, Ronny Markus Jami; Arifiantini, R Iis
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 12 No. 1 (2025)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2025.9208

Indonesian local sheep represent a particular species of sheep reared by farmers on small-scale farms. Semen freezing can be performed using either a homemade or commercial extender. The present study evaluated the effectiveness of several commercial extenders in freezing Indonesian local sheep. Semen was collected from three mature and healthy rams using an artificial vagina and evaluated. It was determined that only samples exhibiting sperm motility levels of greater than 70% would be included in the study. Subsequently, the semen from each ram was divided into three portions and diluted with Andromed, Sterydil, and OptiXcell, respectively. The frozen semen was then evaluated 24 hours post-freezing. The thawing process was conducted individually at 37°C for 30 seconds. The evaluation encompassed a range of metrics, including sperm motility, viability, and the presence of any abnormalities, in addition to the recovery rate. The results indicated that sperm frozen in Optixcell and Sterydil extenders exhibited superior motility, viability, and recovery rate than Andromed. The study also demonstrated no interaction between individual Ram and extender, and no differences were found between individuals. The study concluded that Optixcell and Sterydil extenders effectively froze Indonesian local sheep semen.

EFFECTIVENESS OF VARIOUS COMMERCIAL EXTENDERS IN CRYOPRESERVING SEMEN OF LOCAL INDONESIAN RAMS Setiadi, Dedi Rahmat; Magfira; Riwu, Ronny Markus Jami; Arifiantini, R Iis
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 12 No. 1 (2025)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2025.9208

Indonesian local sheep represent a particular species of sheep reared by farmers on small-scale farms. Semen freezing can be performed using either a homemade or commercial extender. The present study evaluated the effectiveness of several commercial extenders in freezing Indonesian local sheep. Semen was collected from three mature and healthy rams using an artificial vagina and evaluated. It was determined that only samples exhibiting sperm motility levels of greater than 70% would be included in the study. Subsequently, the semen from each ram was divided into three portions and diluted with Andromed, Sterydil, and OptiXcell, respectively. The frozen semen was then evaluated 24 hours post-freezing. The thawing process was conducted individually at 37°C for 30 seconds. The evaluation encompassed a range of metrics, including sperm motility, viability, and the presence of any abnormalities, in addition to the recovery rate. The results indicated that sperm frozen in Optixcell and Sterydil extenders exhibited superior motility, viability, and recovery rate than Andromed. The study also demonstrated no interaction between individual Ram and extender, and no differences were found between individuals. The study concluded that Optixcell and Sterydil extenders effectively froze Indonesian local sheep semen.

Strategi manajemen reproduksi sapi di lahan kering Nusa Tenggara Timur Ronny Markus Jami Riwu
Agrivet : Jurnal Ilmu-Ilmu Pertanian dan Peternakan (Journal of Agricultural Sciences and Veteriner) Vol. 13 No. 2 (2025): Desember
Publisher : Fakultas Pertanian Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/agrivet.v13i2.16629

Beef availability is a key component of national food security, and East Nusa Tenggara (NTT) is one of Indonesia’s main cattle-producing regions with a challenging dryland ecosystem. However, prolonged drought, heat stress, and limited feed supply reduce reproductive efficiency, as reflected in high service per conception (S/C), long calving intervals (CI), variable conception rates (CR), and extended days open (DO). This review aims to analyze the reproductive constraints of cattle in NTT and identify adaptive management strategies to improve reproductive performance. A systematic literature review was conducted using full-text national scientific publications published within the last ten years that discuss reproductive indicators in NTT’s dryland systems. The findings show wide variation in reproductive performance across districts, with S/C ranging from 1.16–3.9, CR from 43.55–87.85%, and CI from 380–1003 days, influenced by nutritional deficits, heat stress, and traditional management practices. The adoption of reproductive technologies such as artificial insemination, estrus synchronization, sexed semen, and embryo transfer has been shown to increase conception rates up to 70% and shorten CI to 12–15 months. In conclusion, improving reproductive efficiency in NTT requires integrated reproductive biotechnology, strengthened estrus detection, improved nutritional management, and collaborative support from farmers, inseminators, extension agents, and local government to enhance productivity in dryland cattle systems.

Correlation Between Chest Girth, Body Length, and Body Height on Wither Weight of Rote Sheep Ewes Ni Made Paramita Setyani; Wilmientje Marlene Nalley; Thomas Mata Hine; Agustinus Ridlof Riwu; Kirenius Uly; Petrus Kune; Yustiany Yuliana Bette; Alvrado Bire Lawa; Simon Edison Mulik; Adyanto Nessy Banamtuan; Roni Markus Jami Riwu; Yanna Nailla Zulfa; Rut Listyadi
Journal of Tropical Animal Science and Technology Vol. 8 No. 1 (2026): Journal of Tropical Animal Science and Technology
Publisher : Animal Science Study Program, Faculty of Agriculture, Science and Health, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jtast.v8i1.10617

This study aimed to analyze the relationship between linear body measurements including chest girth (CG), body length (BL), and wither height (WH) and body weight (BW) in Rote sheep ewes across different age groups to determine the most reliable predictor of body weight. The research employed a quantitative method through direct field measurements and weighing. Data collected including vital statistics (CG, BL, WH) and BW from Rote sheep ewes categorized into three age groups (I0, I2, and I4). The data were analyzed statistically using correlation coefficient (r), the coefficient of determination (R²), and bias analysis to evaluate the accuracy of weight estimation. The results revealed that chest girth exhibited the highest correlation with body weight, particularly in the I0 group (r = 0.93; R² = 86.05%), indicating a strong positive relationship and high predictive accuracy. Body length showed a moderate relationship (r = 0.87; R² = 76.11%) in the same group, while wither height demonstrated a relatively weaker correlation (r = 0.73; R² = 53.94%). Across all age groups, the predictive strength of body measurements decreased with increasing age, suggesting that skeletal growth contributes less to body weight variation in mature sheep. In conclusion, chest girth was identified as the most accurate and reliable linear measurement for predicting body weight in Rote sheep ewes, particularly in younger age groups, and can therefore be used as a practical and non-invasive tool for estimating livestock weight.

Title

Found 4 Documents
Search

Abstract

Abstract

Abstract

Abstract

Title Search

Found 4 Documents Search

Abstract

Abstract

Abstract

Abstract

Title

Found 4 Documents
Search