Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan Tropical Animal Science Journal
Gopar, R. A.
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Energy Veterinary

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Respon Fisiologis dan Metabolit Darah Kambing dan Domba yang Ditransportasi dengan Pick-Up Triple-Deck Gopar, R. A.; Afnan, R.; Rahayu, S.; Astuti, D. A.
Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan Vol. 8 No. 3 (2020): Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan
Publisher : Department of Animal Production and Technology, Faculty of Animal Science, IPB University in associated with Animal Scientist's Society of Indonesia (HILPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jipthp.8.3.109-116

Abstract

The overall transportation process is a gripping activity for goats and sheep. Goats and sheep canexperience stress as reflected by indicators of weight loss, physiological responses and blood metabolites.The use of sheep goat and sheep conveyance according to the Regulation of the Minister of Agricultureof the Republic of Indonesia number 114/Permentan/PD.410/9/2014concerning the transportation ofsacrificial animals, vehicles can be designed for a maximum of two decks. Farmers use pick-up vehiclesarranged in three levels to reduce transportation costs. This study uses two triple-deck pick-up vehiclesfor 60 goats and 60 sheep. Each deck is filled with 20 animals and five animals are taken as samples.The design used by using a randomized block design (RBD), the position of the deck (deck 1, deck 2,deck 3) as a factor, and body weight as groups. The evaluation results of goat and sheep transportationwith a distance of ± 674 km (± 16 hours of travel) shows that deck has no significant effect (P>0.05) onthe weight loss of goat and sheep also did not affect (P>0.05) on the physiological response and bloodmetabolites. The stress level of goats and sheep transported is not affected by deck position.
Nutrient Value and In Vitro Digestibility of Pennisetum purpureum cv. Mott under Varying Gamma Irradiation Doses in Acidic Soil Putra, B.; Gopar, R. A.; Surachman, M.; Darmawan, I. W. A.; Maulana, S.; Prasetya, B.
Tropical Animal Science Journal Vol. 47 No. 2 (2024): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2024.47.2.206

Abstract

Gamma irradiation is an emerging technique in agriculture with the potential to enhance the nutritional quality of forage crops and improve their adaptability to infertile environments. This study examined how different doses of gamma irradiation affected the nutrient content, calcium (Ca) and phosphorus (P) uptakes, and the in vitro digestibility of Pennisetum purpureum cv. Mott, a forage grass cultivated on acidic soil. The experiment involved the application of various gamma irradiation doses (0 Gy, 5 Gy, 10 Gy, 15 Gy, 20 Gy, 25 Gy, and 30 Gy). Four replications were done using a randomized block design, with 25 P. purpureum cv. Mott seeds in each repetition, totaling 700 seeds. The plants were grown in acidic soil with a pH of approximately 4.5–5. After two months of growth, the plants were harvested, and various parameters were analyzed. The research results indicated that the treatment had a significant effect on increasing organic matter content (p<0.01), NDF (neutral detergent fiber) (p<0.01), ADF (acid detergent fiber) (p<0.01), cellulose (p<0.01), hemicellulose (p<0.01), crude protein (p<0.01), crude fat (p<0.05), non-nitrogen-free extract (p<0.05), fiber fractions (p<0.01), nutrient digestibility (p<0.01), and fiber fraction digestibility (p<0.01). Overall, it can be concluded from this study that a gamma irradiation dose of 15 gy can enhance the nutritional content of P. purpureum cv. Mott cultivated on acidic soil and improves its utilization efficiency for livestock due to the increased digestibility.
Gamma Irradiation-Induced Changes in Morphology, Nutritional Traits, and In Vitro Digestibility of Pennisetum purpureum cv. Mott on Post-Gold Mining Soil Putra, B.; Karti, P. D. M. H.; Abdullah, L.; Prihantoro, I.; Wirnas, D.; Gopar, R. A.
Tropical Animal Science Journal Vol. 49 No. 1 (2026): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2026.49.1.88

Abstract

Post-mining lands, especially abandoned gold mining areas, present serious challenges for agriculture and forage cultivation due to poor soil fertility, heavy metal contamination, and damaged soil structure. To address these issues, this study evaluated the impact of gamma irradiation on the agronomic traits, nutritional content, anatomical characteristics, and in vitro digestibility of dry matter, organic matter, and fiber fractions of Pennisetum purpureum cv. Mott grown on degraded post-gold mining soil. A completely randomized design was used, applying seven doses of gamma rays (0, 5, 10, 15, 20, 25, and 30 Gy). Initially, irradiated plants were cultivated under optimal soil conditions. Selected cuttings were then transplanted onto post-mining soil for two months. Variables observed included growth performance, proximate composition, fiber fractions, macro minerals, and digestibility (dry matter digestibility [DMD], organic matter digestibility [OMD], in vitro digestibility [IVD], neutral detergent fiber digestibility [NDFD], acid detergent fiber digestibility [ADFD], cellulose digestibility [CeD], hemicellulose digestibility [HmD]). Results showed that a moderate dose of 10 Gy significantly enhanced dry matter digestibility, in vitro digestibility, and fiber degradation, accompanied by increases in crude protein and mineral levels. Anatomically, beneficial changes such as thicker mesophyll and vascular tissues were observed at this dose. While the 20 Gy dose also showed improvements in some fiber digestibility parameters, it did not provide an optimal balance with productivity, which was better achieved at 10 Gy. Multivariate analysis revealed distinct treatment clustering, reflecting physiological responses to irradiation. Cultivars treated with 10 Gy exhibited an optimal balance between productivity and forage quality. These findings suggest that gamma irradiation can successfully induce advantageous mutations, improving both adaptability and nutritional value of P. purpureum on marginal soils. In particular, a dose of 10 Gy is promising for breeding superior forage cultivars for the reclamation of post-mining land.
Co-Authors Afnan, R. D. A. Astuti Darmawan, I. W. A. Desta Wirnas I. Prihantoro, I. L. Abdullah Maulana, S. P. D. M. H. Karti Prasetya, B. Putra, B. S. Rahayu, S. Surachman, M.