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Prof. Dr. Ir. Komang G. Wiryawan
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Tropical Animal Science Journal
Published by Institut Pertanian Bogor
ISSN : 2615787X     EISSN : 2615790X     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Energy
ropical Animal Science Journal (Trop. Anim. Sci. J.) previously Media Peternakan is a scientific journal covering broad aspects of tropical animal sciences. Started from 2018, the title is changed from Media Peternakan in order to develop and expand the distribution as well as increase the visibility of the journal. The journal is published three times a year in April, August, and December by Faculty of Animal Science, IPB University (Bogor Agricultural University), associated with Animal Scientist's Society of Indonesia. The first edition with the new title will be published in April 2018 edition (Vol 41 No 1 2018), while the previous edition (up to 2017 edition) will still use Media Peternakan as the title and could be accessed in the old website (http://medpet.journal.ipb.ac.id/). This journal has been accredited by National Journal Accreditation (ARJUNA) Managed by Ministry of Research, Technology, and Higher Education, Republic Indonesia with First Grade (Sinta 1) since year 2018 to 2022 according to the decree No. 30/E/KPT/2018.
Arjuna Subject : -
Articles 429 Documents
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Carcass Traits, Physicochemical Characteristics, Fatty Acid, and Protein Profile of Khiew Phalee, Pradu Hang Dam and Broiler Chicken Meat Phromnoi, S.; Chumngoen, W.; Puangmalee, T.; Nuchchanart, W.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.57

Abstract

This study investigated the carcass traits, physicochemical characteristics, fatty acid profile and protein profile of male Khiew-Phalee native (KP), Pradu Hang Dam (PHD), and commercial broiler chickens (CBR). All samples were collected from farms in Uttaradit province and determined the carcass traits and physicochemical characteristics, including proximate composition, pH, meat color, shear force, drip loss, cooking loss, and also analyzed the fatty acid profile, purine content, and protein profile. The results showed that carcass traits such as live weight, carcass weight, and cutting percentage showed a highly significant decrease (p<0.01) in KP and PHD, except for the percentage of thigh, drumstick, and meat quality traits. There were highly significant differences in chemical composition, including moisture, protein, fat, ash and gross energy, lipid content, pH values, color values, drip loss, cooking loss, and shear force among the chicken breeds (p<0.01). The fatty acids significantly decreased in myristic acid, myristoleic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, and erucic acid in KP and PHD. Protein profile analysis found three different protein bands based on SDS-PAGE and LC-MS/MS analysis between three different chicken breeds, including 70 kDa proteins (heat shock 70 kDa and albumin OS) and 110 kDa protein (pyruvate kinase PKM) in KP and PHD with higher intensity than CBR. The cholesterol, purine, and uric acid of breast chicken meat were not affected by breed. Importantly, KP and PHD Thai native chickens possess lower amounts of unhealthy fatty acids, which positively affect the consumer and are anticipated to reduce the risk of many cardiovascular diseases.
Variations in Semen Quality and Potential for Frozen Semen Production in Aceh Cattle Sophian, E.; Said, S.; Setiadi, M. A.; Arifiantini, R. I.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.1

Abstract

The quality of fresh and frozen semen as well as the potential to produce frozen semen, vary considerably between individual animals and cattle breeds. This study aimed to analyze the quality of fresh and frozen semen in Aceh cattle and calculate the potential production of frozen semen in Aceh bulls over 1 year. This study used primary data on the quality of fresh and frozen semen from five Aceh cattle and obtained secondary data from artificial insemination centers in Lembang and Singosari in 2022. Semen samples were collected weekly, and the quality of fresh and frozen semen samples were evaluated. The data were analyzed using a one-way analysis of variance at 95% significance level, followed by Tukey’s test. The results revealed differences in semen volume and pH. Based on microscopic characteristics, the semen samples from different bulls exhibited no discernible differences in mass movement, sperm motility, viability, morphology, and plasma membrane integrity, except for sperm concentration and acrosomal integrity. Bull 211605 exhibited the highest sperm concentration. Furthermore, the frozen semen samples from Aceh cattle showed no significant differences in viability, plasma membrane integrity, morphology, and acrosomal integrity. The total sperm motility of bull 211710 was higher than that of the other bulls. The highest progressive motility was observed in bulls 211710 and 211605, and the highest intact DNA was detected in bulls 211710 and 211605. The results of this study demonstrated that the quality of fresh and frozen semen in Aceh cattle is distinct, and the potential frozen semen production of Aceh cattle is estimated to range from 3,382 ± 1810 to 11,399 ± 2658 straws/year.
Antimicrobial Resistance of Escherichia coli Isolated from Ground Beef in Huasca de Ocampo, Hidalgo, Mexico Cordero-López, A. P.; Vega-Sánchez, V.; Martínez-Juárez, V. M.; Olave-Leyva, J. I.; Gómez-De Anda, F. R.; Reyes-Rodríguez, N. E.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.75

Abstract

The various pathotypes of Escherichia coli cause gastrointestinal infections and diarrhea in humans. Cattle have been reported as reservoirs of different strains of pathogenic E. coli, where the origin of animal-human transmission is usually based on the food chain. Therefore, the study of different food matrices plays an important role, especially in foods of high demand and consumption worldwide, such as beef and beef products. The present study determined the antimicrobial resistance profile of E. coli in ground beef marketed in the municipality of Huasca de Ocampo, Hidalgo, Mexico. In the present study, 10 ground beef samples were collected. The isolated strains were identified by traditional means and molecular by the 16S rRNA gene, the antibiotic sensitivity profile was identified by the Kirby-Bauer method and genotypic identification was performed for the type 1 integrase gene. All strains showed multidrug resistance to different classes of antimicrobials, and the resistance profile yielded a MAR index of 0.64. Of the 13 isolates, 6 (45.15%) were amplified in the presence of the type 1 integrase gene. This cross-sectional study showed a high prevalence of multidrug resistant E. coli recovered from ground beef. In addition, the bacterial resistance profile showed that all the isolated strains were resistant to antibiotics of the β-lactam family, while some antibiotics, such as fluoroquinolones, are highly sensitive drugs for the treatment of possible E. coli infections in the area studied.
Production Performance, Meat Quality, and Lipid Profile of Broiler Duck Fed Diets Containing Selenium-Rich Hermentia illucens Larval Kurniawan, D.; Widodo, E.; Susilo, A.; Sjofjan, O.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.19

Abstract

The purpose of this study was to determine the effects of Se-enriched Hermetia illucens larvae meal (Se-BSFL) on the production performance, meat quality, and lipid profile of broiler ducks. A total of 250 one-day-old, unsexed hybrid broiler ducklings were randomly allocated into five dietary treatment groups, each with five replications of 10 ducklings, namely a control diet (T1), and control with added 5% (T2), 7.5% (T3), and 10% (T4) Se-BSFL, and a positive control diet with 10 mg/kg Se-Yeast (T5) for 42-days. Feed intake and body weight were measured on a weekly basis. At the end of the trial, one bird was selected from each replicate and sacrificed to determine carcass composition and blood serum profiles. The results indicated that dietary supplementation of 5% Se-BSFL resulted in higher final body weight, body weight gain, feed intake, and lower feed conversion ratio than the Se-yeast supplemented diet. Supplementation of Se-BSFL at 5% to 10% significantly affected (p<0.05) high-density lipoprotein, low-density lipoprotein, cholesterol, and triglyceride compared to those of T1 and T5. Supplementation with 5% and 7.5% Se-BSFL (p<0.05) has higher levels of monounsaturated fatty acids in comparison to T1 and T5. Moreover, the supplementation of Se-BSFL did not influence the physical quality of the meat. In conclusion, feeding Se-BSF at 5% is recommended in diets as it does not negatively affect production performance and carcass traits. These findings suggest that the inclusion of Se-BSFL in broiler duck diets enhances their fatty acid and serum lipid profiles, indicating potential benefits from the use of Se-BSFL as a feed component in poultry production.
Improving Meat Quality and Reducing Breast of Myopathies in Broiler Chickens Subjected to Cyclic Heat Stress by Supplementing of Chromium-Methionine Tesser, G. L. S.; Rohloff Junior, N.; Andrade, T. S.; Kaufmann, C.; Costa, A. P. G. C.; Pereira, M. F. C.; Calderano, A. A.; Dadólio, F. S.; Klosowski, E. S.; Eyng, C.; Nunes, R. V.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.27

Abstract

Chromium-methionine (CrMet) provides essential nutrients and bioactive compounds that may enhance meat quality and reduce stress-related issues in broiler chicken. This study aimed to evaluate the effects of chromium-methionine on carcass yield, relative weights of the liver and fat pad, incidence and severity of myopathies, muscle color quantification, water-holding capacity, cooking loss, shear force, lipid peroxidation in breast muscle, and composition of breast meat in broiler chickens subjected to cyclic heat stress. A total of 1,000 one-day-old male Cobb 500 broiler chickens were divided into 10 replicate pens with 20 birds each, following a completely randomized design with five doses of dietary treatments (0; 0.25; 0.50; 1.0; and 2.0 mg CrMet kg-1 diet). Experimental broiler chickens were kept in thermoneutral conditions for 21 days, then subjected to cyclic heat stress (31.1 °C and 60.2% humidity) from 09:00 am to 03:00 pm until 42 days of age. Statistical analysis included Tukey’s test and regression analysis. Myopathy scores were assessed using the Kruskal-Wallis test and Dunn’s test, all at a significant level of 5%. Inclusion of 0.50 and 1.0 mg CrMet reduced woody breast severity scores. At 15 minutes postmortem, birds fed 0.50 mg CrMet had less redness (a*) than controls and birds fed 2.0 mg CrMet; birds fed 2.0 mg CrMet had lower lightness (L*) than those fed 0.25 and 1.0 mg CrMet. Lipid peroxidation was lower in birds fed 0.50 mg CrMet at 60 days compared to control. Crude fat was lower in birds fed 1.0 mg CrMet. Chromium-methionine supplementation at 0.50 and 1.0 mg/kg diet improved meat quality and reduced woody breast in broiler chickens.
Emulsion-Type Chicken Sausage Quality with Fat Substitution by Rice Starches during Freeze-Thaw Cycles Kosim, A.; Rumpagaporn, P.; Vangnai, K.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.68

Abstract

The potential of rice starch types was explored to mimic the fat and improve the stability of chicken sausage during multiple freeze-thaw (F-T) cycles. This study investigated the effect of partial fat replacement with non-waxy and waxy rice starch on the physical properties of chicken sausage during multiple F-T cycles. Sausages were manufactured using eight different formulas (standard fat, reduced-fat, and reduced-fat with both starches at addition levels of 3%, 6%, and 9%). Emulsion stability, cooking loss, color, and texture profile were analyzed as initial qualities. Sausages were stored at -18 oC for seven days and thawed at 4 oC for 17 h for each of three F-T cycles, then thawing loss and texture were evaluated. The result showed that the incorporation of non-waxy and waxy rice starch up to 9% increased the emulsion stability, lightness (L*), and the value of hardness, gumminess, and chewiness of chicken sausage (p<0.05). Multiple F-T cycles lead to mechanical damage and quality deterioration, including water-holding capacity loss and textural change. The thawing loss value of all treatments significantly increased during the F-T cycle. Utilization of waxy rice starch 3% in low-fat chicken sausage exhibited optimum physical properties and minimum thawing loss and texture change during multiple F-T cycles.
Evaluating Foot and Mouth Disease Vaccination Services through Assessment of Beef Cattle Farmers’ Satisfaction in Sleman Regency Syihabuddin, M. Y.; Andarwati, S.; Guntoro, B.; Putra, A. R. S.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.83

Abstract

The study aimed to evaluate the satisfaction of beef cattle farmers towards Foot and Mouth Disease (FMD) vaccination services in Sleman Regency. A survey method was employed, involving 120 farmers who participated in the FMD vaccination program. Beef cattle farmers’ satisfaction levels were assessed using the Customer Satisfaction Index (CSI) method, which revealed that 82.25% of farmers were highly satisfied with various indicators of the vaccination services. To identify areas for improvement, the Importance-Performance Analysis (IPA) was utilized. The IPA highlighted several attributes as top priorities for performance enhancement, including: The priority indicators for performance improvement include service procedures that are easy to understand, vaccination officers not discriminating based on farm location, the handling skills of the officers, and the application of biosecurity measures according to procedures. Beef cattle farmers’ perceptions of the benefits of the vaccination program were 83.8%, indicating a rating of ‘very good’. These insights offer a foundation for policymakers to optimize FMD vaccination services, increase beef cattle farmers’ satisfaction, and promote livestock health.
Morphological and Molecular Diversity of Five Superior Napier Grass Cultivars in Indonesia Nasution, M. D. M.; Umami, N.; Kurniawati, A.; Rahman, M. M.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.8

Abstract

This study aimed to evaluate the morphological and genetic diversity among five cultivars of Napier grass (Pennisetum purpureum) grown in Indonesia: ‘Gama Umami’, ‘Pakchong’, ‘Odot’, ‘Purple’, and ‘Local’. A total of 20 plants per cultivar were planted in a completely randomized design with morphological parameters, nutrient content, biomass production, and molecular analysis assessed at a cutting age of 90 days. The morphological analysis revealed significant differences (p<0.05) in plant height, leaf length, and the number of tillers across the cultivars. Qualitative analysis revealed differences in leaf color and growth habits. ‘Gama Umami’ cultivar showed the highest biomass yield, with significantly (p<0.05) higher crude protein and dry matter content than the other cultivars. Random amplified polymorphic DNA (RAPD) analysis using nine primers on the five Napier grass cultivars demonstrated diverse band patterns, resulting in a percentage of polymorphic bands (PBP) ranging from 60% to 100%. The dendrogram derived from the RAPD data clustered the cultivars into two main groups, with ‘Gama Umami’ and ‘Local’ showing a high similarity coefficient of 0.73, while ‘Purple’ and ‘Pakchong’ formed a distinct sub-cluster with a similarity coefficient of 0.66, and ‘Odot’ exhibited a similarity coefficient of 0.58 with the ‘Purple’ and ‘Pakchong’ sub-cluster. This study revealed significant genetic and morphological diversity among five Napier grass cultivars, with 'Gama Umami' demonstrating superior morphological traits, nutrient content, and biomass production. These findings highlight the potential of integrating molecular and morphological analyses to support breeding programs for improving forage quality and productivity.
Shade Selection of Indigofera zollingeriana Miq Putative Mutant: Evaluation of Plant Growth, Biomass Production, Nutrient Contents, and In Vitro Digestibility Royani, J. I.; Abdullah, L.; Sudarsono; Aisyah, S. I.; Hardianto, D.; Negoro, P. S.; Purba, R. D.; Azahra, B. S.
Tropical Animal Science Journal Vol. 48 No. 2 (2025): 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.2025.48.2.120

Abstract

The use of gamma rays to improve Indigofera zollingeriana is beneficial for developing new superior varieties with genetic characteristics inheritable by other generations. During the development, selecting genotypes from I. zollingeriana putative mutant under shaded conditions can create stable shade-tolerant varieties, with the potential to be developed into new cultivars. Therefore, this study aimed to explore the selection of I. zollingeriana putative mutant in the M2 generation for assessing and evaluating plant growth performance, biomass production, as well as nutrient content and digestibility under shading. Seedlings of 10 I. zollingeriana putative mutants along with 2 control plants, were subjected to 5 levels of shade, namely 0%, 55%, 65%, 75%, and 85%, to identify genotypes with shade tolerance. The results showed that shading significantly (p<0.05) increased plant height, chlorophyll content, leaf length, and leaf width, but decreased the number of leaves, nodes, stem diameter, and branches, also leading to decreased biomass production, high nutritional content, and improved digestibility values. Genotypes R4.10 and R5.10 showed enhanced plant growth, stable biomass production, and increased nutritional content, with low digestible neutral detergent fiber (dNDF), and higher in vitro true digestibility (IVTD) values compared to control under shaded and unshaded conditions. The identified superior genotypes are promising for breeding programs and practical application in agroforestry or silvopasture systems.
Evaluation of Selected Intestinal Damage Biomarkers for the Determination of Intestinal Epithelial Damage in Neonatal Lambs with Diarrhea Alhallaq, A.; Ok, M.
Tropical Animal Science Journal Vol. 48 No. 2 (2025): 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.2025.48.2.132

Abstract

The aim of this study was to evaluate selected intestinal damage biomarkers for the determination of intestinal mucosal epithelial barrier damage in neonatal lambs with diarrhea. The study material consisted of 68 lambs with diarrhea (experimental group, 39 Escherichia coli infected lambs and 29 Cryptosporidium infected lambs) and 20 healthy lambs (control group) aged between 2 and 20 days. The diseases were diagnosed on the basis of a positive fecal antigen test for E. coli K 99, Rotavirus, Coronavirus, Cryptosporidium, and Giardia species in fecal samples obtained from lambs with diarrhea and clinical signs. In addition, Cryptosporidium oocysts were confirmed by light microscopic examination. Anticoagulated blood samples for hemogram measurements and non-anticoagulated blood samples for biomarker measurements were collected from all the lambs. Serum intestinal fatty acid binding protein (I-FABP), trefoil factor-3 (TFF-3), intestinal alkaline phosphatase (IAP), and claudin-3 (CLDN-3) biomarkers were measured using sheep specific enzyme-linked immunosorbent assay (ELISA) test kits. Standard diarrhea treatment was applied to lambs with diarrhea. While 57 lambs recovered, 11 died. There was a significant increase in serum I-FABP, TFF-3, and IAP concentrations (p<0.001) and a decrease in serum CLDN-3 concentrations (p<0.001) in lambs with diarrhea compared to healthy lambs. Total white blood cell (WBC), granulocyte (GRA), and monocyte (MON) counts increased in lambs with diarrhea compared to healthy lambs (p<0.05). In conclusion, this study demonstrated that I-FABP, TFF-3, IAP, and CLDN-3 were useful and reliable biomarkers to determine the presence and extent of intestinal mucosal epithelial damage in lambs with diarrhea.

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