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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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Improving Rabbit Fertility: The Relationship Between Semen Dilution Rate and Artificial Insemination Effectiveness Khuong, T. T. T.; Len, H. V.; Trung, T. T.
Tropical Animal Science Journal Vol. 47 No. 1 (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.2024.47.1.9

Abstract

This study aimed to assess the impact of different dilution ratios of rabbit semen to Tris Citrate Glucose (TCG) extender on doe fertility through artificial insemination in the Mekong Delta region of Vietnam. The experiment included three dilution ratios (1:10, 1:15, and 1:20), with each treatment replicated 12 times. Semen quality variables were evaluated and does were artificially inseminated using a standardized technique. Our findings revealed that the 1:20 dilution exhibited the highest percentage of successful insemination (66.67%) and the shortest gestation period (31.6 days). Furthermore, the 1:20 dilution treatment resulted in an average litter size at birth of 5.25 kits, a litter weight at birth of 290.37 g, and a litter weight at weaning of 1963.04 g. These results suggest that the 1:20 dilution ratio holds promise for artificial insemination in rabbit breeding programs in the Mekong Delta of Vietnam.
Effect of Shearing on Thermo-Physiological, Behavior, and Productivity Traits of Two Indonesian Local Sheep Breeds Panjono; Ibrahim, A.; Ngadiyono, N.; Maulana, H.; Atmoko, B. A.
Tropical Animal Science Journal Vol. 47 No. 1 (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.2024.47.1.42

Abstract

Thin-tailed sheep (TTS) and Fat-tailed sheep (FTS) are local Indonesian sheep breeds characterized by coarse wool. This study aimed to investigate the effects of wool shearing on the thermo-physiological, behavior, and productivity traits of these sheep. Sixteen selected rams were utilized in this study. Animals were assigned to a factorial completely randomized design and divided into two groups (TTS and FTS) and two treatments (sheared and unsheared). The study spanned three months under controlled conditions. Variables observed included environmental conditions, thermo-physiological parameters (respiratory rate/RR, pulse rate/PR, rectal temperature/RT, and heat stress index/HSI), sheep behavior (feeding duration, drinking frequency, rumination duration, urination frequency, defecation frequency, standing duration, and lying duration), and sheep productivity (feed intake, average daily gain/ADG, and feed conversion ratio/FCR). Data were analyzed using two-way ANOVA. Throughout the study, average temperature and humidity ranged from 25.13-30.48 oC and 64.50%-91.67%, respectively. Wool shearing significantly influenced (p<0.05) sheep’s thermo-physiological, behavior, and productivity traits. These effects were consistent across sheep breeds, with no significant differences noted. Wool shearing significantly reduced (p<0.05) RR, PR, and RT, while the impact on average HSI was not significant. Additionally, sheared sheep exhibited increased (p<0.05) feeding, rumination, standing duration, and higher defecation frequency. Conversely, drinking frequency, urination frequency, and lying duration decreased in the sheared sheep group. Moreover, the sheared sheep demonstrated higher (p<0.05) feed intake and ADG, leading to a reduced (p<0.05) FCR compared to the unsheared group. In conclusion, shearing is a recommended practice for coarse wool-type sheep in tropical environments. This technique does not induce stress and enhances their thermo-physiological, behavior, and productivity traits.
Molecular Identification, Chemical Composition, and In Vitro Anthelmintic Activity of Sargassum duplicatum Against Haemonchus contortus Sakti, A. A.; Kustantinah; Sofyan, A; Nurcahyo, R. W.; Fidriyanto, R.; Kusnadi, H.; Prasetyo, A.; Putnarubun, C.; Permadi, S.; Pramono; Hartati, L.; Hudaifa, I.; Suwignyo, 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.2024.47.2.188

Abstract

The resistance of the Haemonchus contortus, a parasite causing severe anemia in ruminants, to commercial anthelmintics emphasizes the need for alternative bio-anthelmintics. This study aimed to identify the molecular, chemical composition, and in vitro anthelmintic activity of Sargassum duplicatum against H. contortus. Molecular identification employed the Chelex method, with DNA diversity and phylogeny assessed using maximum likelihood in IQ-tree. The analyzed chemical composition included proximate, total flavonoid, and total phenols. Adult worm motility test (AWMT) and egg hatch inhibiting test (EHIT) were conducted at concentrations of 2, 4, and 6 mg/mL of S. duplicatum ethanolic extract. AWMT followed a completely randomized factorial design (5 replications, each with 5 worms), while EHIT used a completely randomized one-way design (5 replications, each with H. contortus egg batches from 3 adult female worms). The cox1 gene sequence revealed the Sargassum sample as S. duplicatum (KP101270.1) with 99.83% similarity. The results indicated that the identified concentrations of S. duplicatum ethanolic extract, and the observation time significantly influenced motility and egg hatchability (p<0.05). Both factors exhibited a significant interaction (p<0.05). Concentrations of 4-6 mg/mL reduced worm motility by up to 50% (LD50) within 6-8 hours, while concentrations of 2-6 mg/mL inhibited egg hatchability by more than 87% during 24 hours of incubation. In conclusion, S. duplicatum holds significant potential as a bio-anthelmintic agent.
Correlation of Meat pH and Muscle Fiber Characteristics, Cortisol Level, and Tenascin C Gene Expression in Pigs Kayan, A.; Koomkrong, N.; Laenoi, W.; Rattanasrisomporn, J.
Tropical Animal Science Journal Vol. 47 No. 1 (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.2024.47.1.125

Abstract

The effects of meat pH on muscle fiber characteristics, cortisol level, and Tenascin C (TNC) gene expression were examined. The muscle samples (n=100) were randomly collected from the Longissimus thoracis et lumborum (LTL) to determine meat pH at 24 hours (meat pH24h) post-mortem. Muscle samples (five samples per group) with divergent meat pH levels (low versus high) were selected to study muscle fiber characteristics and mRNA expression based on quantitative real-time polymerase chain reaction (qRT-PCR). Blood samples (five samples per group) of the two meat pH levels were taken for serum cortisol analysis. The results showed that there was no significant differences between the groups for the muscle fiber characteristics of total number of fibers, muscle fiber diameter, cross-section area, perimysium thickness, and endomysium thickness. Different meat pH24h values did not affect the cortisol level. The mRNA expression of the TNC gene was significantly (p<0.05) downregulated in the low meat pH24h group compared to the high meat pH24h group. In conclusion, meat pH24h was unrelated to the cortisol level and muscle fiber characteristics. However, the TNC gene might play a role in meat pH24h in pigs.
The Silage Quality of Pennisetum purpureum Cultivar Gamma Umami Mixed with Calliandra calothyrsus and Lactiplantibacillus plantarum Mudhita, I. K.; Putra, R. A.; Rahman, M. M.; Widyobroto, B. P.; Agussalim; Umami, N.
Tropical Animal Science Journal Vol. 47 No. 1 (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.2024.47.1.112

Abstract

This study aimed to determine the effect of Calliandra calothyrsus supplementation and inoculation of Lactiplantibacillus plantarum (L. plantarum) on Penisetum purpureum cv. Gamma Umami grass fermentative and chemical quality and nutrient degradability. The study used a completely randomized design with 3 × 3 factorial patterns. The first factor was Calliandra supplementation levels at 10%, 20%, and 30%; the second was L. plantarum inoculation levels at 0%, 2%, and 4%. The variables measured included chemical fermentation profiles, chemical composition, and rumen fermentation and degradability parameters. The result showed that a higher level of C. calothyrsus supplementation concomitant increased silage pH and NH3-N concentration (p<0.05), while L. plantarum inoculation significantly decreased the silage pH and ammonia concentration (p<0.05). The silage contents of dry matter, organic matter, crude protein, and ether extract in silage significantly (p<0.05) increased. Inoculation of L. plantarum decreased (p<0.05) crude fiber, ether extract, and total tannin content of silage. The total volatile fatty acids, acetate, propionate concentrations, and rumen microbial protein synthesis were significantly increased with Calliandra supplementation (p<0.05). L. plantarum inoculation treatment only increased the proportion of acetate (p<0.05) and tended to increase the volatile fatty acids of rumen fluid, the proportion of acetate, propionate, and butyrate. The rumen ammonia concentration decreased with Calliandra supplementation and L. plantarum inoculation. It is concluded that 30% Calliandra supplementation and 2% L. plantarum inoculation and their combination were the treatments that produced the best chemical fermentation, rumen fermentation, and degradability parameters.
Effect of Rumen-Protected Glucose Supplementation on Feedlot Performance, Carcass Characteristics, and Meat Quality of Kamphaeng Saen Steers Tong, P.; Boonsaen, P.; Thirawong, P.; Khongpradit, A.; Sawanon, S.; Buaphan, S.
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.2024.47.2.197

Abstract

This study aimed to determine the effects of dietary rumen-protected glucose (RPG) supplementation on feedlot steer performance, blood metabolite, carcass characteristics, and meat quality. Twelve Kamphaeng Saen steers were used with mean ± standard deviation for age 27.9 ± 6.9 months and initial body weight of 471 ± 3.03 kg. Steers were randomly assigned to either a control diet (CON) or a diet supplemented with 200 g/head/d of RPG by top-dressing at each feeding daily (RPG). Both groups were fed the concentrate diet, consisting of 14% crude protein and using rice straw as a roughage source in a ratio of 75:25. After being fed for 120 d, the steers were slaughtered. The feedlot performance, ruminal fermentation, blood biochemical parameters, carcass characteristics, and meat quality were evaluated. The results showed that there were no significant differences in the dry matter intake, average daily gain, feed conversion ratio, gain feed ratio (G:F), blood metabolite, and carcass characteristics between the CON and RPG groups. The marbling score, fat and protein contents of the longissimus dorsi muscle of the steers fed the RPG diet were significantly (p<0.05) greater than those for the steers fed the CON diet. In addition, the cooking loss and shear force of the steers fed the RPG diet were significantly (p<0.05) lower than those for the steers fed the CON diet. These results indicated that rumen-protected glucose has the potential to improve the meat quality of Kamphaeng Saen steers.
Exploring the Impact of Kisspeptin-10 on the Fecundity Traits of Anestrus Iraqi Cows Khafaji, S. S.
Tropical Animal Science Journal Vol. 47 No. 1 (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.2024.47.1.15

Abstract

The inactive ovaries of cattle caused a significant economic loss, so the current study is intended to recover and enhance the fertility of dairy cattle suffering from anestrus by kisspeptin-10. Forty Holstein Friesian cows, aged 3.5-6.8 years with inactive ovaries for 60-70 days of postpartum, were distributed randomly into four equal groups. The control (C) group administered 5 mL intramuscularly (I.M) of normal saline, Gn group administered 0.5 mg/animal I.M of GnRH. K1 and K2 were administered with 6 μg/kg BW I.M and 12 μg/kg BW I.M of kisspeptin-10, respectively. After heat signs were detected, artificial insemination was performed. Blood samples were collected at 0, 2, 6, 24, and 72 hours post-hormonal injection to estimate fertility hormones, and fecundity features were demonstrated after hormonal treatment and after twelve months. The current results noted a significant (p<0.05) increment in estradiol, FSH, and LH in K1 and K2 cows compared to Gn and C at 6-24 h post hormonal treatment, while progesterone showed a significant (p<0.05) drop in K1, Gn, and K2 in comparison with C. Also, the calving and fertility rates were significantly higher (p<0.05) in K2 and K1 compared with Gn and C after hormonal treatment and after one year. The kisspeptin-10 injection improved the fertility of anestrus cows by enhancing the reproductive hormonal profile and fertility traits for long-term effects and without requiring a second kisspeptin-10 injection in Holstein Friesian cows; therefore, administration of kisspeptin-10 can be regarded as an alternative application of using some hormones like GnRH.
Dietary Supplementation of Spirulina platensis as a Substitute for Antibiotics in Arab Chicken (Gallus turcicus) Hasna, N. A.; Widiastuti, E.; Agusetyaningsih, I.; Wulandari, E. C.; Murwani, R.; Yudiarti, T.; Sartono, T. A.; Sugiharto, S.; Wahyuni, H. I.
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.2024.47.2.180

Abstract

This study was conducted to determine the effect of adding Spirulina platensis to replace zinc bacitracin on performance, egg quality, blood profile, total gut bacteria, and liver histopathology of local indigenous Arab chicken (Gallus turcicus). One hundred and eight 28-week-old laying hens were distributed randomly to three treatments: T0 (control diet), T1 (T0 + 1% S. platensis), and T2 (T0 + 0.04% zinc bacitracin). The treatment was applied for 49 days. S. platensis and zinc bacitracin decreased feed intake (p<0.05), but the egg mass had no significant effect; this provides a good improvement in feed conversion ratio (p<0.05). S. platensis helped maintain persistent egg production (p<0.05). S. platensis and zinc bacitracin provided the best results on haugh unit (p<0.05). S. platensis increased the yolk score (p<0.05). Zinc bacitracin decreased erythrocytes (p<0.05) but was not significantly different from S. platensis. S. platensis and zinc bacitracin increased mean corpuscular volume (MCV) (p<0.05). Blood chemical profile and total gut bacteria were not affected by the treatments. S. platensis was the best at maintaining liver’s health (p<0.05). This research concludes that S. platensis can efficiently optimize feed consumption, enhance performance, maintain egg quality, and protect the liver damage of Arab chicken. Therefore, S. platensis could be considered to replace the use of antibiotics.
SNP Detection in FREM2 Gene and Its Association with Carcass Quality in Bali Beef Pertiwi, E. A.; Ulum, M. F.; Jakaria, J.
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.2024.47.2.149

Abstract

The FRAS1-related extracellular matrix protein 2 (FREM2) gene is one of the genes that play a role in controlling marbling scores in beef cattle. This study aimed to identify SNPs in exon 6 of the FREM2 gene and its association with carcass quality in Bali beef using ultrasonography. A total of 93 cattle were used: 55 cattle from Banjarmasin slaughterhouse, South Kalimantan, Indonesia, 28 cattle from Bali Cattle Breeding Centre in Bali Province, and 10 cattle from UPTD Kupang Regency, NTT, Indonesia. SNP of the FREM2 gene was identified by using sequencing techniques and then genotyping by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The association of FREM2 gene SNPs with carcass characteristics was analyzed using the General Linear Model (GLM) method using SPSS software version 22. Carcass (longissimus dorsi thickness; back fat thickness) and meat (intramuscular fat; marbling score) characteristics were identified non-invasively using ultrasonography images and then analyzed with Image-J NIH software. SNP at position g.89327G>A was located in exon 6 of the FREM2 gene and did not change the amino acid (prolineproline) sequence in Bali beef. The genotyping results with PCR-RFLP technique SNP g.89327G>A FREM2|BccI gene has high diversity. The alleles of A and G were 0.747 and 0.253, respectively. The diversity of SNP g.89327G>A was significantly associated (p<0.05) with longissimus dorsi thickness (LD), while back fat thickness, intramuscular fat, and marbling score did not significantly different (p>0.05). Thus, SNP at position g.89327G>A in exon 6 of the FREM2 gene might be used as a candidate genetic marker for carcass quality in Bali beef.
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.

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