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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. 45 No. 3 (2022): Tropical Animal Science Journal" : 15 Documents clear
A Typological Analysis of Dairy Farms Based on Bulk Milk Price V. D. V. Costa; R. R. Martinelli; F. I. Bánkuti
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.374

Abstract

This study sought to examine the relationship between typological characteristics of dairy farms and the price received per liter of bulk milk in transactions with processing companies. During a period from January to March 2018, a total of 143 dairy farmers in western São Paulo State were interviewed on-site using a semi-structured questionnaire containing questions regarding structural, productive, and socioeconomic characteristics of farms and farm operators. Dairy farms were classified into two groups: G1 (n= 129), farms paid below the regional average price per liter of milk; and G2 (n= 14), farms paid above the regional average price per liter of milk. Then, factor analysis was used to extract factors associated with each dairy farm group. Three factors were identified: F1, Milk volume and quality; F2, Road conditions; and F3, Production area. Mean factor scores were compared by the Mann–Whitney U-test (p<0.05). G1 and G2 dairy farms differed significantly in Milk volume and quality (F1). There were no significant differences between G1 and G2 for the other factors. Dairy farms that produced a greater volume of milk and invested more in milk quality secured better prices in transactions with the industry. Based on these findings, it is concluded that actions to increase the scale of production and improve milk quality should be regarded as a priority, thereby increasing the likelihood that dairy farms will remain in business in the long term.
Morphological Characteristics and Nutritional Quality of Mutant Benggala Grass (Panicum maximum cv Purple Guinea) Generation M1V3 A. Fanindi; S. H. Sutjahjo; S. I. Aisyah; N. D. Purwanti
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.327

Abstract

This study aims to observe morphological characters and genetic parameters of Benggala grass and its nutritional quality. Research on morphological characters was conducted at the Regional Technical Executive Unit (UPTD) of Tenjo dry land, using a randomized block design with 5 replications. The parents of the M1V3 mutant were from Benggala grass cv Purple guinea from the germplasm collection of the Indonesian Research Institute of Animal Production (Balitnak). The M1V3 plants were derived from 2400 M1V1 plants sorted to 250 M1V2 plants, and finally to 29 M1V3 plants. There were 29 plants planted on the experimental field using pols and control plants. Morphological observations and forage harvests were conducted at harvest/cutting ages 2 and 3 months after planting. Each harvest age was analyzed respectively. Forage quality observations were carried out at the RIAP Laboratory. The results showed that at the ages of 2 and 3 months, almost all characters were significantly different (p<0.05) in each genotype and several mutants of Benggala grass were higher than controls. Broad categorical genetic parameters were found in the characters of fresh weight, fresh weight of leaves, and fresh weight of tillers. Nutritional quality shows that irradiated plants have good nutritional quality because the value of crude protein and digestibility increases, while the value of crude fiber decreases compared to the control plant. In conclusion, the characterization of the M1V3 generation showed high-yielding mutants that were higher than the control and this M1V3 generation could be used as candidates for high-yielding varieties of Benggala grass.
Protodioscin Content, Degradation Kinetics, and In Vitro Digestibility of Marandu Palisadegrass Hay as were Affected by Cutting Interval of the Canopy F. O. C. G. Coca; E. N. O. Gomes; L. Junges; L. C. V. Ítavo; L. M. Nonato; F. K. Gomes; C. C. B. F. Ítavo; G. S. Difante; A. M. Dias
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.299

Abstract

Even though marandu palisadegrass is widely used in Brazil, the consumption of this forage may cause photosensitization in ruminants due to the protodioscin. This study aimed to recommend a harvest cutting interval for haymaking that provides a better nutritional value and lower levels of protodioscin. The experimental treatments were four cutting intervals (21 d, 35 d, 49 d, and 63 days of regrowth period up to forage harvest). The experimental design was a completely randomized block design with 4 treatments and 4 replications. We assessed the forage production, chemical composition, in vitro digestibility, in vitro degradation kinetics, and protodioscin content. The forage accumulation rate did not differ with the increased cutting interval. The crude protein contents and in vitro digestibility of dry matter decreased linearly with the increased cutting interval in fresh and hay material. The greatest gas production in hay material was occurred in 21 d cutting interval, which was 26%, 14%, and 5% greater than cutting intervals of 63, 49, and 35 d, respectively. A linear increase was observed in protodioscin concentration in hay according to the cutting interval, which in the hay with 63 d cutting interval was 7%, 29%, and 43% greater than hays with cutting interval of 49, 35, and 21 d, respectively. In addition, protodioscin contents were lower in hay compared to fresh material. The haymaking process reduced protodioscin content in relation to forage before haymaking. Our results showed that the better condition to harvest marandu palisadegrass for hay was at 21 d. The better condition to develop a productive canopy is associated with better nutritive value and lower protodioscin content.
Genetic Diversity of Various Goat Breeds in East Java Based on DNA Microsatellite Markers T. E. Susilorini; D. Wulandari; A. Furqon; W. A. Septian; F. Saputra; S. Suyadi
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.247

Abstract

Information on genetic diversity using microsatellite markers was essential to formulate effective conservation and breeding strategies. This study aims to identify the genetic diversity and relationships between Kacang, Senduro, Peranakan Ettawa (PE), Boer, and Saanen goats in the East Java region, Indonesia, using 12 microsatellite markers. A total of 86 goat blood DNA samples, which consisted of Kacang (n=41), Senduro (n=23), Boer (n=13), PE (n=5), and Saanen (n=4), were used in this study. The DNA was extracted based on Genomic DNA Mini Kits protocols for analysis fragment in microsatellite DNA region using specific primer recommended by the ISAG/FAO. A total of 96 alleles were identified in this study. The observed heterozygosity ranged from 0.470±0.135 (Kacang) to 0.592±0.211 (PE) and the expected heterozygosity ranged from 0.589±0.251 (Saanen) to 0.762±0.084 (PE). F statistical analysis include inter-population inbreeding rate (Fis) 0.2583 (25.83%), inbreeding rate in population (Fit) 0.3238 (32.38%), and genetic differentiation (Fst) 0.0882 (8.82%). The 11 microsatellite markers were highly informative (PIC>0.5), except the INRA063 locus markers were quite informative (PIC 0.25-0.5). The research showed that Kacang, Senduro, and PE goats had a close genetic distance and formed a cluster. Kacang and Saanen goats showed a long genetic distance at 26.9%. In conclusion, the genetic relationship among goat breeds in East Java was divided into three clusters where Boer and Saanen goats formed their cluster.
Production Potential and Quality of Panicum maximum Cultivars Established in a Semi-Arid Environment M. de G. Pereira; G. dos S. Difante; L. C. V. Ítavo; J. G. Rodrigues; A. L. C. Gurgel; A. M. Dias; C. C. B. F. Ítavo; E. L. de L. Veras; A. B. G. da Costa; G. O. de A. Monteiro
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.308

Abstract

This study was conducted to examine the forage production potential and quality of Panicum maximum cultivars in a semi-arid environment, in four different periods. Six cultivars were evaluated: Aruana, Massai, Mombasa, BRS Tamani, Tanzania, and BRS Zuri. The experiment was laid out in a randomized-block design with four replicates, and assessments took place in four different periods (establishment, dry season, transition, and rainy season). Forage accumulation rate (FAR), chemical composition, digestibility, and in vitro rumen degradation kinetics were evaluated. There was an interaction effect between cultivars and evaluation periods for all variables, except dry matter (DM) content. The highest FAR occurred in cvs. BRS Tamani (47.0 kg DM/ha/day) and BRS Zuri (86.9 kg DM/ha/day) in the establishment and rainy periods, respectively, while cv. Aruana showed the lowest FAR (14.5 kg DM/ha/day). The highest crude protein contents were found in cv. BRS Tamani in the transition period; cv. BRS Zuri in the dry season; and cv. Tanzania in the rainy season (128.2, 116.7, and 95.0 g/kg DM, respectively). Cultivar Aruana showed the highest average in vitro dry matter digestibility (810.0 g/kg DM). Cultivars Aruana and Zuri exhibited the highest means of the total in vitro gas production (23.59 and 20.24 mL/100 mg DM, respectively). Cultivars BRS Tamani and BRS Zuri had the best response in terms of forage accumulation and nutritional value. The quality of cv. Massai remained constant throughout the year. All Panicum maximum cultivars evaluated here have the potential for use in animal production systems in a semi-arid environment.
Factors Associated with the Odds of Pregnancy for Dairy Cattle after Treatment of Ovarian Disorders in Northern Vietnam S. T. Long; N. C. Toan; P. V. Gioi; P. T. Hang
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.277

Abstract

The study was carried out to assess factors related to the odds of pregnancy for dairy cattle after treating ovarian disorders in some Northern Vietnamese provinces. A total of 449 ovarian-disordered heifers and cows were given appropriate treatments for their diseases and were diagnosed by rectal palpation with pregnant status after artificial insemination. Data collected from ruminants were analyzed by applying Binary Logistics Procedure in SAS 9.0 and three methods were utilized to test the significant level of regressive coefficients related to the factors, which included various nutritional, environmental, and management factors (locations, parities, ages, body condition scores, housing types, mineral licking block diets, rubber bedding, and categories of disordered ovaries). Based on the odds ratio, cows and heifers in Ha-Noi zone had higher odds of pregnancy than in Vinh-Phuc province (odds ratio [OR] =1.97, p<0.05). Multiparous cows were likely to get a lower chance to conceive than heifers. The odds of pregnancy for dairy cattle decreased with the increase of age, and with each month increased of age, the odds of pregnancy decreased by 1.8%. The better housing condition the dairy cattle live in, the higher pregnancy rate they get. The pregnant opportunity of the dairy cattle kept in the concrete floor house is higher than that kept in rubber floor house (OR=4.03; p<0.0001). Adding mineral licking block in their diet affected the conception odds but did not affect BCS. When the appropriate treatment was used, dairy cattle with inactive ovaries were less likely to conceive than those with cystic ovarian disease and persistent corpus luteum.
The Viabilities of Freeze-Thaw Pasundan-Bull Sperms After a Short-Term Exposure to Media with Different pHs R. Widyastuti; N. M. D. Haq; D. N. Pristihadi; Wahyudin; H. Maheshwari; C. Sumantri; A. Boediono
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.270

Abstract

External pH is crucial in preserving sperm viability and ensuring fertilization during in vitro conditions. The purpose of this study was to determine the maximum pH value that can be tolerated by frozen-thawed Pasundan bull sperms and the effect on sperm quality. Around 250x106 sperms/mL of frozen-thawed Pasundan bull sperms were divided into ten equal aliquots, and each was diluted in the medium within a particular pH value. HCL or NaOH was added to the buffer media to create ten different solutions with varying pH values of 3, 4, 5, 6 as acidic, 7.2-7.4 as a control, and 8, 9, 10, 11, and 12 as alkaline. Furthermore, the samples were incubated for 5 minutes at room temperature within a particular pH medium before being immediately supplemented with a buffered medium to achieve a pH of 7.2-7.4. After 10 minutes of incubation at room temperature, all parameters were assessed. The results showed that sperm motility, viability, normal morphology, and acrosome intactness in sperms incubated in the acidic or alkaline media were significantly lower compared to control (p<0.05, respectively). Interestingly, the sperm still had a good tolerance to pHs 6 and 8. This tolerance was evidenced by all the parameters of sperms that were not sharply decreased compared to the control group. The significant loss of motility occurred at pHs 3 and 12. It could be concluded that frozen-thawed Pasundan bull sperms are still tolerable in pHs 4-11, but the sperm quality degrades as the acidity or alkaline level increases.acidic
Colostrum Quality of Ewe Fed Flushing Diet Containing EPA and DHA Associated with Lamb Performance A. Nurlatifah; L. Khotijah; R. I. Arifiantini; M. S. Maidin; D. A. Astuti
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.348

Abstract

This study evaluated the effect of a flushing diet containing docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) from lemuru fish oil in ewe ration on colostrum quality and lamb performance. Twenty Garut ewes were divided into four treatments of flushing concentrate: control concentrate (P1), flushing concentrate containing 6% palm oil (P2), flushing concentrate containing 3% lemuru oil and 3% palm oil (P3), flushing concentrate containing 6% lemuru oil (P4). The animal consumed Napier grass and concentrate with a diet ratio of 30%:70% based on dry matter. The experimental ewes were fed flushing rations two weeks before and two weeks after mating continued with 2 weeks before and two weeks after lambing. The ewes and their lambs were put together until weaning time with around two months. The parameters observed in ewes were nutrient consumption and their colostrum qualities. Meanwhile, the lamb parameters measured were nutrient consumption, lamb blood metabolites at birth, and lamb performance. The experimental design used a randomized blocked design (RBD). Analysis of variance (ANOVA) followed by Duncan test was used to analyze data. The results showed that treatment did not significantly affect dry matter consumption in ewe and lamb, ewe’s colostrum quality, and lamb’s blood metabolites. However, the treatment significantly improved (p<0.05) average daily gain and weaning weights of lambs. In conclusion, the flushing ration did not affect the quality of colostrum produced. Feeding of experimental ewes 2 weeks before and 2 weeks after mating continued with 2 weeks before and 2 weeks after parturition with flushing rations of 6% lemuru oil containing EPA and DHA can produce twin lambs with good growth performances such as daily gain and weaning weight similar to the control, which has single litter size.
The Quality of Frozen Semen of Limousin Bull in Various Semen Diluents A. A. Arif; T. Maulana; E. M. Kaiin; B. Purwantara; R. I. Arifiantini
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.284

Abstract

Diluents are substances added to the semen to increase the semen volume, reduce sperm density, and maintain sperm viability. This study aimed to compare the effects of various semen diluents on the quality of frozen semen of Limousin bull. Three mature Limousin bulls were used as semen sources. The semen was collected using an artificial vagina and then evaluated for its quality. Sperms with motility less than 70% and abnormality greater than 20% were excluded from this study. After semen evaluation, each ejaculate was individually divided into four equal tubes and diluted with skimmed milk-egg yolk (SMEY), Tris–egg yolk (TEY), Tris–egg yolk–skimmed milk (TEYSM), or Andromed®. Diluted semen was loaded into a mini straw and then equilibrated at 5 °C for 4 h. Following equilibration, the straws were frozen. The percentages of sperm motility, viability, intact membrane, and sperm DNA integrity were evaluated after freezing. Furthermore, malondialdehyde (MDA) and aspartate aminotransferase (AST) enzyme concentrations were assessed after thawing. The sperm motility with TEY, TEYSM, and Andromed® did not differ significantly but was higher than with SMEY. Sperm viability, membrane intactness, and sperm DNA integrity did not differ among treatments. By contrast, the MDA levels and concentration of AST in the Andromed® diluent semen showed the lowest values compared with SMEY semen (p<0.05) but did not differ from those of TEY and TEYSM semen. To conclude, TEY, TEYSM, and Andromed® diluents performed equally well, and although they showed better results than SMEY, sperm diluted in SMEY are still suitable for artificial insemination.
A Novel SNPs of KISS1 Gene Strongly Associated with Litter Size in Indonesian Goat Breeds A. Febriana; S. Sutopo; E. Kurnianto; W. Widiyanto
Tropical Animal Science Journal Vol. 45 No. 3 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.3.255

Abstract

Kisspeptin is a protein encoded by the KISS1 gene which behaves as a key role by stimulating gonadotropin releasing hormone (GnRH) neuron activity directly in the reproductive axis. The objective of the present study was to determine the genetic diversity within intron 1 of KISS1 gene and to verify their association with fecundity traits which can be devoted as a marker assisted selection (MAS) for breeding selection. This study was established on three Indonesian native goat populations (Kacang, Kejobong, and Senduro). The PCR products were then sequenced in both directions. The DNA sequencing alignment resulted fifteen variants (one indel and fourteen SNPs), with SNP1, SNP2, SNP3, and SNP9 being novel single nucleotide polymorphisms (SNPs) of KISS1 gene intron 1. Genotype, haplotype, and parity were significantly associated with litter size. SNP8, SNP9, and SNP10 were correlated with overall means of litter size (LS) and LS at the first and the third parities (p<0.05). Additionally, novel SNP9 were in remarkably strong linkage disequilibrium with SNP8 and SNP10 (D’=1.00; r≥0.58; χ2≥13.38), and allele A had putative binding sites for the NFIC which plays an important role in activating the expression of KISS1 gene. The H2 haplotype (CATAGCGCAACGCT) was found to have the highest litter size (p<0.0001). CC genotype at SNP8, AA genotype at novel SNP9, GA genotype at SNP10, and H2 haplotype were the excellent genotypes and haplotype that associated with the superior LS (p<0.05). Therefore, this result led to presume that these three SNPs and H2 haplotype can be acknowledged as prominent genetic markers for goat- breeding selection.

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