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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.
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Articles 15 Documents
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Search results for , issue "Vol. 47 No. 4 (2024): Tropical Animal Science Journal" : 15 Documents clear
Characteristics of Liquid Egg White with Addition of Forest Bee Honey During Cold Storage Saputri, K. W.; Nurliyani; Widodo
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.510

Abstract

Eggs were perishable foodstuffs during distribution to consumers. Hence, appropriate egg handling and preservation methods were needed and could be applied to farmers and the egg processing industry. This research aimed to evaluate the effect of adding forest bee honey (Apis dorsata) on the physicochemical and microbiological qualities of liquid egg whites at storage temperature of 4 °C. The treatments consisted of three levels of honey (0%, 5%, and 10%) with storage durations of 0, 1, 2, 3, 4, 5, 6, 7, and 8 weeks. The variables analyzed include physical properties (foam capacity and foam stability), chemical properties (S-ovalbumin and protein profile on SDS-PAGE), and total plate count (TPC). The results revealed that the interaction of storage time and the addition of honey has a significant effect (p<0.05) on foam capacity, foam stability, S-ovalbumin, and TPC. Egg whites with 10% honey had higher foam capacity and foam stability, but lower S-ovalbumin content and the number of microbes after eight weeks compared to egg whites with 0% honey and 5% honey. In conclusion, the addition of 10% forest bee honey could maintain physicochemical qualities and extend the shelf life of liquid egg white during 8 weeks of cold storage.
Perceptions and Economic Losses of Foot and Mouth Disease to Beef Cattle Farmers in Bantul Regency, Yogyakarta Putra, D. W.; Kusumastuti, T. A.; Andarwati, S.; Panjono; Guntoro, B.
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.529

Abstract

The objectives of this study were to measure the level of farmers’ perceptions on psychological, socio-cultural and economic aspects, and to analyze the economic losses during foot and mouth disease (FMD) outbreaks. This study was conducted in Bantul District, Yogyakarta, during the period of July-September 2023. A total of 148 farmers affected by FMD were surveyed by a purposive sampling method using a questionnaire and the data were analyzed using the ordinal logistic regression method. The result showed that farmers’ perceptions of FMD outbreaks of psychological, socio-cultural and economic attributes were in the high category. The majority of farmers experienced low economic losses (47.30%). Age and livestock ownership (p<0.01), formal education, and informal education (p<0.1) had a positive effect on the level of farmers’ economic losses, while only farming experience (p<0.01) had a negative effect. Pseudo R-Square value of 33.9% or the level of economic losses, is influenced by farmers’ age, farming experience, livestock ownership, as well as formal and informal education. Reaction in the field of opportunity: the highest level of economic losses in the low category is 0.997%. This study shows that FMD handling carried out by farmers is good enough to prevent the impact of large economic losses on cattle farmers in Bantul Regency.
Determining the Minimum Time Interval for Completely Eliminating the Carryover Effect of Dehydration in Heat-Stressed Goats: Insights from Physiochemical Mechanisms Samara, E. M.; Al-Badwi, M. A.; Abdoun, K. A.; Al-Haidary, A. A.
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.426

Abstract

Heat stress, coupled with water deprivation, is widely acknowledged as one of the most potent stressors capable of impairing the production performance of small ruminants; therefore, comprehending and mitigating this stressor is of paramount importance. This experiment aimed to investigate the physiochemical adaptability of heat-stressed goats to periods of water deprivation and subsequent rehydration, focusing on determining the minimum time interval required to fully eliminate the carryover effects. Nine healthy Aardi bucks, aged 10 months and weighing 29.14±1.06 kg, underwent three experimental stages: euhydration (EU), dehydration (DE), and rehydration (RE). The EU and DE stages lasted 72 hours each, while the RE stage extended to 10 days. Physiochemical responses, including daily feed intake (DFI), rectal temperature (RT), respiratory rate (RR), hematology, biochemistry, and hemogasometry, were all monitored. Exposure of heat-stressed goats (as evidenced herein by the temperature-humidity index values) to complete water deprivation during the DE stage had manifested significant modulation in their physiological responses (DFI, RT, and RR), which thereby led to notable changes in their hematological, biochemical, and hemogasometric profiles. Surprisingly, blood pH remained unchanged throughout the experiment, underscoring goats’ remarkable adaptive mechanisms to tolerate infrequent liquid intake in their natural hot and arid environment. Notably, all measured variables completely returned to EU levels after 10 days of commencing the RE stage. Based on the obtained findings, a minimum recovery period of 10 days post-rehydration is recommended to eliminate carryover impacts of water deprivation for 72 hours before conducting any further experiments on heat-stressed and water-deprived goats. This research contributes to enhancing goat welfare under harsh environmental conditions.
Selenium Supplementation Tended to Increase Digestibility and Milk Fat Content in Dairy Goats: A Meta-Analysis Nurmala, D. P.; Susilorini, T. E.; Sjofjan, O.; Adli, D. N.
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.456

Abstract

A meta-analysis was conducted to determine the effects of selenium supplementation on milk production, milk composition, and nutrient digestibility in dairy goats. A database was constructed based on relevant published papers. Related studies that met the criteria were sourced from PubMed, Scopus, and Google Scholar. After the identification of studies through the SYRCLE method, the final dataset consisted of 15 studies and 188 treatments. The data were analyzed using R version 4.3.3 (2024-02-29 ucrt) “Angel Food Cake”, which utilizes packages such as lme4, lmerTest, and caret. The results showed that increasing concentrations of selenium tended to increase the digestibility of dry matter (DM), organic matter (OM), crude protein (CP), ether extract (EE), and total digestible nutrients (TDN) (p<0.05). Additionally, the results indicated a significant improvement on the milk fat content (p<0.05). In conclusion, selenium supplementation until 0.2 mg/kg significantly increase digestibility and milk fat content in dairy goats.
Use of Random Regression Models to Estimate the Heritability of Weight Growth in Meat Quails Pavan, N. L.; Menezes, F. L. de; Laureano, M. M. M.; Ton, A. P. S.; Araújo, S. I.; Camargo Júnior, R. N. C.; Silva, W. C. da; Silva, É. B. R. da; Araújo, C. V. de
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.409

Abstract

The aim of this study was to estimate the best covariance function structure, by means of Legendre polynomials using random regression models (RRM) to describe the genetic variability of the weight growth trajectory of quails and to estimate the genetic parameters. Body weight records of animals at 7, 14, 21, 28, 35, and 42 days of age were used. The orders of fit of the polynomials were gradually increased in orders from 3 to 6 for comparison between the models the Akaike information criteria were used. The models included fixed effects of the contemporary group, the fixed regression coefficient of weight on the Legendre polynomial, random regression coefficients of the direct additive genetic, and the permanent environment effects of the animal, in addition to the residual random effect. The RRM with orders five for the additive genetic effect and six for the permanent environment effect, under the assumption of homogeneity, was the most suitable to describe the genetic variability of the birds’ ponderal growth. There was greater expression of additive genetic variability after 21 days, resulting in distinct and increasing heritability estimates between two periods in ponderal development. Estimates of additive genetic correlations for weights between the ages evaluated indicated that genetic associations are more correlated between body weights at closer ages when compared to ages more distant along the growth trajectory. Thus, it is concluded that selection in birds is more efficient from 28 days of age due to the higher heritability values.
Association of BoLA-DRB3 Alleles with the Progression of Bovine Leukosis in the Lucerna Breed Hernández-Herrera, D. Y.; Carrillo-González, D. F.
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.417

Abstract

The bovine leukosis virus causes enzootic bovine leukosis (BLV) of the Retroviridae family and is the most significant neoplastic disease in cattle, leading to substantial economic losses globally. This study aimed to associate the progression of bovine leukosis with BoLA-DRB3 alleles in the Lucerna breed. A total of 104 animals were tested for the presence of BLV by nested PCR, the development of persistent lymphocytosis (PL) by peripheral blood smear, antibody titers (AT) to BLV by ELISA, and proviral load (PVL) by qPCR. Animals were genotyped for the BoLA-DRB3 gene by PCR-SBT. Allele frequencies of the DRB3 gene were estimated and associated using Fisher’s exact test and odds ratio. About 93.2% of the animals were virus positive, and 18.3% developed PL. Fifty percent of the animals had elevated AT with a value of 88.7 log2, and 43.3% had elevated PVL with 326871 copies/105 cells. In total, 17 BoLA-DRB3 alleles were found; the BoLA-DRB3*011:01 allele (12.1%) was the most frequent. Two alleles showed an association with susceptibility to viral infection (BoLA-DRB3*15:01 and *23:01), and only the BoLA-DRB3*38:01 allele was considered resistant. The BoLA-DRB3*11:01 and *15:01 alleles were not associated with LP, and neither allele was associated with high LP. Low AT was found in the BoLA-DRB3*13:01 and *20:01:02 alleles. The BoLA-DRB3*15:01 and *16:01 alleles were associated with high AT. Low PVL was associated with the BoLA-DRB3*11:01 and *23:01 alleles. BoLA-DRB3*15:01 allele was associated with high PVL. In conclusion, the Lucerne breed has a slow progression of enzootic bovine leukosis.
The Prediction of Somatic Cell Count Through Multilayer Perceptron of Deep Machine Learning Yeşil, M. İ.; Göncü, S.
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.503

Abstract

The main objective of the research is to generate an alternative approach to classical techniques in the prediction of the somatic cell count (SCC), which is the gold standard indicator of subclinical mastitis. This approach involves using the physical properties of milk such as density, the temperature at fore milking (TFM), pH, and electrical conductivity (EC) with a feed-forward backpropagation multilayer perceptron (MLP) artificial neural networks (ANN) model, which is one of the widely used machine learning techniques. The performance of the model was assessed by test with cross-validation on data that was not introduced to the model before and compared to the classical linear model (multiple linear regression) as the control model. The findings showed that the model has satisfactory results in terms of loss and performance criteria (R2=0.95, RMSE=0.01; AIC=-338). The test model (ANN) had a higher performance (AIC=-338) than the control model (AIC=-240) created with the classical linear model despite using more parameters (81). Using big data from automated milking information—like estrus cycle, lactation stage, and milk yield—on supercomputers can improve the accuracy of performance assessments in dairy farming.
Evaluating Physicochemical Properties of Whey-Chia Seed Edible Films for Biodegradable Packaging Fahrullah, F.; Noersidiq, A.; Kisworo, D.; Maruddin, F.
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.519

Abstract

The use of whey-chia seed edible films can help reduce environmental pollution while preserving the quality of food products. Films were produced using varying ratios of whey to chia seed (v/w) (whey-chia seed ratio of 1:0.5 (W1), 1:0.75 (W2), and 1:1 (W3)) through a completely randomized design with three treatments and six replications. The results showed significant differences (p<0.01) in elongation, tensile strength, moisture content, solubility, and color properties, except for crude fiber content (p>0.05). As the whey:chia seed ratio increased to 1:1, elongation increased up to 76.77%, while tensile strength decreased to 3.876 MPa, indicating an inverse relationship between these properties. The film with a whey:chia seed ratio of 1:0.5 showed 71.08% elongation but higher tensile strength (4.306 MPa) compared to the W3 treatment. The whey:chia seed ratio of 1:1 chia seed film also had the highest moisture content (49.52%), solubility (53.69%), and fiber content (15.67%). Increasing the ratio of chia seed resulted in a brighter and more transparent appearance. The microstructure of the film was continuous, compact, and homogeneous, without any irregularities such as cracks or air bubbles. The study concluded that chia seeds enhance the physicochemical and mechanical properties of whey-based edible films, with the optimal film produced at a 1:1 whey-chia seed ratio.
Chemical and Physical Quality, Fermentation Characteristics, Aerobic Stability, and Ruminal Degradability of Sorghum Silage Inoculated with Lactiplantibacillus plantarum and Limosilactobacillus fermentum Fitriani, D.; Ardiansyah, M.; Kurniawati, A.; Bachruddin, Z.; Paradhipta, D. H. V.
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.483

Abstract

This study was carried out to determine the effect of homo (Lactiplantibacillus plantarum FNCC 0020) and hetero (Limosilactobacillus fermentum BN21) fermentative lactic acid bacteria on chemical compositions, fermentation characteristics, aerobic stability, and ruminal digestibility of sorghum (Sorghum bicolor L. Moench) silage. The sorghum forage was harvested at the milk ripening phase with a dry matter content of 25.6% and fermented for 100 days with different inoculants: treatments without inoculant (CON), L. plantarum (LP), L. fermentum (LF) as well as a mixture of LP and LF at a ratio of 1:1 (MIX). The experiment was conducted using a completely randomized design with 5 replications per treatment, and all inoculants were applied at 105 cfu/g of fresh forage. The results showed that LF silage caused a 66.3% reduction in cyanide acid content, the lowest mold count, and longer aerobic stability compared to LP and CON. The lowest pH (p<0.05) and highest organic matter digestibility (p<0.05) were obtained on LP silage, while the CON silage showed no significant difference. The LP and LF silage showed the highest total volatile fatty acid (p<0.05), while there was no significant between CON and others. The LF silage had the highest acetate and the lowest propionate (p<0.05). These results showed that L. fermentum was more effective in decreasing cyanide acid content and increasing the aerobic stability of sorghum silage, while L. plantarum was able to lower pH and reduce ammonia concentration.
Health Status of Broiler Chickens Fed Diets Containing Palm Kernel Cake with Enzyme Mixture Supplementation Zubaidah, S.; Ariyadi, B.; Hanim, C.; Baskara, A. P.; Zuprizal
Tropical Animal Science Journal Vol. 47 No. 4 (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.2024.47.4.465

Abstract

Palm kernel cake (PKC) utilization as poultry feed has limitations due to its high crude fiber and non-starch polysaccharides, which make it difficult for poultry to digest. This study aimed to determine the effect of enzyme supplementation on blood profile, gastrointestinal health, and intestine histomorphology of broiler chickens fed PKC. This study used 1,080 Indian River strain roosters and two kinds of enzyme mixtures. Enzyme 1 consisted of mannanase 182 g/ton, NSPase 200 g/ton, and protease 130 g/ton, and Enzyme 2 consisted of mannanase 182 g/ton, NSPase 400 g/ton, and protease 260 g/ton. This study used six treatments and six replicates, and each replicate consisted of 30 birds. Data were analyzed using a completely randomized design with a factorial pattern of 2 × 3 and 6 replications. The treatment of factor A consisted of 3 levels of enzyme addition (No enzyme, Enzyme 1, and Enzyme 2), and factor B consisted of 2 levels of PKC (10% and 20%). The data obtained was analyzed using analysis of variance (ANOVA), and the significant difference among treatments was further analyzed using Duncan’s multiple range test. The experimental broilers fed PKC supplemented with enzyme had increased (p<0.05) villus height in the duodenum and ileum and decreased (p<0.05) relative weight percentage of the ventriculus (A2B1 and A3B1). The PKC supplementation increased (p<0.05) the relative weight percentage of proventriculus, duodenum, ileum, caecum, pH of ileum, crypta depth in the duodenum and ileum, but decreased (p<0.05) villus height in the jejunum. Enzyme supplementation increased (p<0.05) the plasma albumin, pH of duodenum, and villus width, but decreased crypta depth in the duodenum. This research concluded that Indian River strain roosters fed ration with 10% PKC supplemented with mannase, NPSase, and protease at doses of 182 g/ton, 200 g/ton, and 130 g/ton had the best health status.

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