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Journal of the Indonesian Tropical Animal Agriculture
Published by Universitas Diponegoro
ISSN : 20878273     EISSN : 24606278     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences
Journal of the Indonesian Tropical Animal Agriculture (JITAA) is a double blind peer-reviewed publication devoted to disseminate all information contributing to the understanding and development of animal agriculture in the tropics by publication of original research papers
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 676 Documents
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Effect of Morinda citrifolia L., citric acid, and Lactobacillus acidophilus on broiler growth performance, carcass traits, and litter quality Mahfudz, L. D.; Ma'rifah, B.; Suprijatna, E.; Sunarti, D.; Kismiati, S.; Sarjana, T. A.; Muryani, R.; Shihah, H. D.; Wahyuni, N. M.
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 4 (2025): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.4.269-280

Abstract

This study evaluated the effect of a feed additive combination, Morinda citrifolia leaf extract, citric acid, and Lactobacillus acidophilus (MCL) on broiler chicken performance, carcass traits, and litter quality. MCL contains bioactive compounds such as flavonoids, saponins, citric acid, and probiotic. A total of 200 broiler chickens (8 days old with average body weight 213.88 ± 8.9 g) were randomly assigned to four treatments with five replications of bird each: T0 (control), T1 (1% MCL), T2 (2% MCL), and T3 (3% MCL). Results showed that T2 significantly improved (P<0.05) body weight gain (BWG) and income over feed cost (IOFC). Water consumption and carcass weight were also higher (P<0.05) in T2. Final body weight was significantly higher (P<0.05) in all MCL treatments compared to T0. Feed conversion ratio improved (P<0.05) in T2 and T3. MCL supplementation enhanced carcass traits and litter quality. Cooking loss was lower (P<0.05) in T2, while drip loss and litter pH were reduced (P<0.05) in all MCL treatments. White striping was higher (P<0.05) in T1, and litter temperature was lower (P<0.05) in T2 and T3. These finding suggest that MCL is a promising natural alternative to synthetic growth promotors, improving productivity and probitability in broiler production.
Immunohistochemical analysis of HSP-70 and IL-6 expression in rooster testes treated with Cucurbita moschata seed extract under heat stress condition Rochmi, S. E.; Sofyan, M. S.; Achmad, A. B.; Pertiwi, H.; Residiwati, G.; Ihsan, I. S.; Tuska, H. S. A.; Supriyadi, S.
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 4 (2025): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.4.304-311

Abstract

Heat stress is a major environmental factor that disrupts reproductive function in poultry, primarily by triggering oxidative stress and inflammation in testicular tissue. This study evaluated the influence of Cucurbita moschata(pumpkin seed) extract in mitigating the adverse effect of heat stress in roosters testes by regulating key markers, heat shock protein 70 (HSP70) and interleukin-6 (IL-6).Twenty-five adult roosters, aged one year, were divided into five groups: a non-stressed control group, a heat-stressed group without treatment, and three heat-stressed groups treated orally with 1600, 3200, or 6400 mg/kg body weight of the extract for 21 consecutive days. Immunohistochemical analysis revealed that heat stress led to marked increases in HSP-70 and IL-6 expression in the testes, reflecting cellular stress and inflammatory responses. Notably, administration of Cucurbita moschataextract attenuated these responses in a dose-dependent manner, with the 3200 and 6400 mg/kg doses showing the most significant reduction in protein expression. These findings highlight the potential role of Cucurbita moschataas a natural therapeutic agent to protect male reproductive function under heat stress conditions through its antioxidant and anti-inflammatory properties.
Factors of competitiveness and strategies to improve exports of chicken products in Indonesia Wibowo, A. H.; Muzayyanah, M. A. U.; Guntoro, B.
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 4 (2025): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.4.312-323

Abstract

The livestock subsector contributes around sixty percent of the gross domestic product (GDP) of the agricultural sector, and poultry products approximately 80.77% of total national livestock production. Although Indonesia's poultry industry shows great potential, exports of Indonesian broiler products still face various obstacles, for instance geographical distance between countries, exchange rates, Covid-19 pandemic and implementation of Free Trade Agreements (FTA). This study aimed to analyze the determinant factors of the export competitiveness of Indonesian chicken products in the international market with a descriptive quantitative method using Likert-scale questions . This study involved the entire population of 45 individuals, consisting of poultry companies engaged in export activities and relevant government institutions. The Gravity Model approach was employed to examine economic and geographical factors, while the Porter Diamond framework was used to assess the determinants of the industry’s competitive advantage. The results showed that geographical distance (-0.09), exporter GDP (0.27), and importer GDP (0.04) affected to export performance. The most influential factors on Indonesia’s chicken products export competitiveness were firm strategy, structure, and rivalry—particularly product adaptation to target markets (4.61)—and government support through export procedure simplification (4.59). Furthermore, related and supporting industries were found to have a strong correlation with competitiveness. The strengths, weaknesses, opportuni-ties, and threats (SWOT)  analysis resulted diversification strategies in both products and markets, as well as the integration of digital technology in production and distribution become strategic steps to enhance export competitiveness.
Dietary clove (Syzygium aromaticum) powder enhanced broiler chicken performance, gut histomorphometry and health-associated whilst decreasing pathogenic microbiota Ogwuegbu, M. C.; Uzochukwu, I. E.; Edeh, H. O.; Ukah, E. G.; Obey, C. O.; Okpanachi, U.; Mthiyane, D. M. N.
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 4 (2025): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.4.324-337

Abstract

This study evaluated the impact of dietary clove powder on growth performance, carcass traits, nutrient digestibility, jejunal histomorphometry and ileal microbiota in broiler chickens. A total of 250 Chikun day-old broiler chicks were allocated to 5 dietary groups with 5 replicates of 10 birds each for 6 weeks in a completely randomized design. The groups were fed diets containing clove powder at 0, 0.5, 1.0, 1.5 and 2 g/kg diet. Results showed that dietary clove supplementation improved final body weight and feed conversion ratio (P < 0.001) while reducing total feed intake. Also, it increased weights of live chickens at slaughter, breast meat, shank and drumstick/thigh ratio (P < 0.001). Further, it linearly increased apparent digestibility of DM, CP, and EE (P < 0.01) as it quadratically decreased CF (P < 0.01). Furthermore, it linearly increased jejunal villus length, crypt depth and thickness of muscularis (P < 0.001) whilst it quadratically decreased thickness of the epithelium (P < 0.01). Moreo-ver, it increased ileal Lactobacilli whilst decreasing Salmonella and E. coli (P < 0.05) bacterial species. In conclusion, dietary clove powder improved growth performance, carcass characteristics, nutrient digestibility, gut histomorphometry and Lactobacilli while it decreased Salmonella and E. coli bacteria.
Front-matter (Desember 2025) Wibowo, Rahmat
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 4 (2025): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.4.%p

Abstract

Front-matter (Desember 2025)
Back-matter (Desember2025) Wibowo, Rahmat
Journal of the Indonesian Tropical Animal Agriculture Vol 50, No 4 (2025): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.50.4.%p

Abstract

Back-matter (Desember 2025)

Page 68 of 68 | Total Record : 676

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