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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 429 Documents
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Nutrient Utilizations and Intestinal Morphology of Broilers Treated with Lactobacillus plantarum AKK30 – Oligosaccharides Synbiotic H. Julendra; A. Sofyan; M. F. Karimy; Abinawanto Abinawanto; Yasman Yasman
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (799.905 KB) | DOI: 10.5398/tasj.2020.43.2.158

Abstract

Lactobacillus plantarum AKK30 inoculum in de Maan Rogosa Sharpe Broth (MRSB) grown on media containing oligosaccharides (inulin or mannan oligosaccharides/MOS) was studied in vitro and in vivo. In vitro assay was conducted to characterize metabolite profiles and its effect on pathogenic bacteria, while in vivo assay was conducted to study the metabolic energy, nitrogen retention, and intestinal morphology of broilers. A total of 24 male broilers-40-day-old (average body weight= 1.725±0.05 kg) strains Cobb-500 were used, where 20 birds were added 1% inoculum L plantarum AKK30 of daily intake and randomly distributed in five treatments and four replications consisted of: A) MRSB + L. plantarum AKK-30 (10⁷ cfu g-1); B) MRSB + inulin 0.5% (w v-1); C) MRSB + MOS 0.5%(w v-1); D) L. plantarum AKK-30 (10⁷ cfu g-1) + MRSB + inulin 0.5% (w v-1).; and E) L. plantarum AKK-30 (10⁷ cfu g-1) + MRSB + MOS 0.5% (w v-1), while 4 birds were fasted as endogenous chicken. The results showed that the highest isoleucine and threonine were found in group E. The highest oleic acid and the lowest conjugated linoleic acid (CLA) were observed in all treatments and inoculum did not affect antibacterial activity. The metabolizable energy values and nitrogen retention in group D and E were higher than other treatments (p<0.05). The lowest height of villi was observed in group A (p<0.05). In conclusion, the addition of oligosaccharides inulin or mannan oligosaccharide (MOS) affects the metabolite profiles of Lactobacillus plantarum AKK30 and their synbiotic effects improve intestinal morphology, metabolizable energy, and nitrogen retention in broilers.
Preliminary Study of Buffer Ratio in Protein Extraction from Placental Cotyledons of Kedah-Kelantan Cattle Y. Y. Tee; K. Mat; M. A. Adam; N. D. Rusli; C. H. Hasnita; H. N. Mohd Khalid
Tropical Animal Science Journal Vol. 43 No. 4 (2020): 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.2020.43.4.300

Abstract

Protein extraction is a preliminary step of protein purification which mainly focus on maximization of total protein yield. The heterogeneous properties cause diversification of protein; therefore, there is no absolute protocol in protein extraction. The ratio of buffer gives different protein concentrations in different types of mammalian tissues, and this condition leads to the study of optimization of buffer ratio to obtain a better total protein yield. The objectives of this study were to compare the total protein yield based on three different ratios of buffer used. The phosphate buffer saline (PBS), radioimmunoprecipitation assay (RIPA) buffer, and RIPA buffer with the addition of protease inhibitor (Pi) were used with the ratios of 1:1, 1:3, and 1:5. Fetal cotyledons removed from the placenta have undergone mechanical disruption, incubation, sonication, and centrifugation. The supernatant was retained and quantified with Bradford assay to determine the total protein yield based on the standard curve of bovine serum albumin (BSA). There was a statistically significant different between buffer ratio (p<0.5) in RIPA and RIPA with addition of protease inhibitor buffers. RIPA buffer with the ration of 1:1 gave the best total protein yield (194.880±15.089 mg/g). As a conclusion, there was a significant interaction between buffer types and have greatly enhanced the total protein yield obtained from placental cotyledons of Kedah-Kelantan cattle.
Breeding Practices and Trait Preferences of Sheep Farmers in a Sub-Humid Tropical Environment A. Yakubu; S. Isa; O. Alabi; A. J. Shoyombo; A. I. Adeolu
Tropical Animal Science Journal Vol. 43 No. 4 (2020): 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.2020.43.4.377

Abstract

The present study was carried out to determine the livestock breeding practices and the trait preferences of sheep farmers in Nasarawa State, Nigeria. A total of 132 sheep keepers were randomly sampled out of which data from 120 farmers were utilized in the final analysis. Primary data were collected through individual semi-structured questionnaire administration. Categorical and continuous variables including production and breeding traits were statistically tested based on sex of the respondents. Age of respondents, educational status, primary occupation, access to credit, and type of landholding were significantly different between the male and female farmers. Flock size was higher in farms owned by male farmers (19.63±1.04 versus 15.16±1.00). However, both sexes did not differ (p>0.05) in the ranking of meat, religion, income, hides, and skin and cultural purpose as reasons for keeping sheep. As regards management of sheep, control of breeding and access to veterinary services were low among female farmers. Apart from cultural/religious significance which was ranked higher by female farmers (63.38 versus 52.23; p≤0.05), other production traits such as disease resistance, survivability, growth rate, meat quality, fertility, body size, and prolificacy did not vary between sexes. Disease resistance, which the male farmers attached more importance (57.0 versus 70.52; p≤0.05), was the only significant breeding trait between sexes. Categorical principal component analysis (CATPCA) also revealed little influence of sex on the production and breeding traits investigated. The present findings could guide interventions such as the setting up of sustainable community-based breeding schemes to improve sheep production in the study area.
Evaluation of Mineral Contents in Milk of Dairy Cattle Fed Elephant Grass Planted at Ex-Coal Mining Land H. Harmini; D. Evvyernie; P. D. M. H. Karti; Y. Widiawati
Tropical Animal Science Journal Vol. 43 No. 4 (2020): 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.2020.43.4.322

Abstract

The growth of several types of grass in the area of ​​mine re-vegetation is rapidly providing an opportunity to be used as forages despite the possibility of heavy metal contamination. The purpose of the study was to evaluate the effect of treatment of different levels of elephant grass (EG) (Pennisetum purpureum) planted at ex-coal mining reclamation on milk productivity and mineral contents of dairy cattle. This study used four lactating (second lactation) dairy cattle using Latin Square Design of 4 (treatments) x 4 (replications). Each period was 21 days consisted of 14 days of preliminary for feed adaptation and 7 days for observation. Treatments were P0 (0% ex-coal mining (EEG)+60% Farmer’s EG (FEG)+40% Concentrate), P1 (15% EEG+45% FEG+40% Concentrate), P2 (30% EEG+30% FEG+40% Concentrate), and P3 (60% EEG+0% FEG+40% Concentrate). The study observed variables of feed intake and efficiencies, milk production, milk quality, and mineral contents of milk. Results showed that EEG treatment at different levels did not affect fresh and dry matter intake. The highest fresh and dry matter intake was found in P0 treatment. There was no significant difference in giving EG planted at the ex-coal mining and the farmer’s land on the milk production and milk quality. The only significant differences (p<0.05) were found in mineral Fe and Mg contents of milk. The study concluded that giving EG planted at the ex-coal mining area until 60% of forage affected Fe and Mg contents of milk, but they are still in the safe limit.
Genetic Diversity of Indonesian Swamp Buffalo Based on Microsatellite Markers F. Saputra; Jakaria Jakaria; A. Anggraeni; C. Sumantri
Tropical Animal Science Journal Vol. 43 No. 3 (2020): 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.2020.43.3.191

Abstract

Indonesia has high genetic resources of local swamp buffalo with good adaptation across regions. However, these animals decline in both population and genetic quality. This research was conducted to study the genetic diversity of Indonesian swamp buffalo. A total of 199 DNA samples (swamp buffalo) from seven provincial populations were used in this study. Genetics identification used three microsatellite markers (CSSM66, ILSTS61, and ILSTS17). Microsatellites were visualized by Polyacrylamide Gel Electrophoresis (PAGE) 10% with silver staining method. Microsatellite data were analyzed using GenAlEx 6.41, Cervus 3.0, and POPTREE2 software. The results showed that a total of 9 alleles were found from the three loci. ILSTS61 had a high PIC (Polymorphism Information Content) compared to the other loci. The high observed heterozygosity of ILSTS61 was found in swamp buffalo from Riau Province, while the Ho value of ILSTS17 ranged from 0.000 to 0.170. This study identified two clusters for Indonesian swamp buffalo, i.e., cluster I (Aceh, North Sumatra, and Riau) and cluster II (Banten, Central Java, West Nusa Tenggara, and South Sulawesi). The two major divergent directions are considered in Indonesia swamp buffaloes across the observed provinces.
Zeranol Residue Detected by HPLC in Bovine Meat from Three Different Cities in Java Island R. Widiastuti; Y. Anastasia
Tropical Animal Science Journal Vol. 43 No. 3 (2020): 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.2020.43.3.270

Abstract

Zeranol is one of non-steroidal hormonal growth promoters (HGP) that is still permitted to be used in some countries such as Australia, the United States, and others to increase weight gain. However, this non-steroidal HGP is not permitted in Indonesia. The use of zeranol to increase the growth of livestock can cause the occurrence of residue in livestock tissues and organs, having a great dangerous potential for human health. This study aimed to investigate the presence of zeranol residues in 105 samples of bovine meat collected from Jakarta, Surabaya, and Malang cities and analyzed by high-performance liquid chromatography (HPLC). The samples were added with the deproteinizing extractant of 0.2% metaphosphoric acid and acetonitrile (6:4, v/v), and purified using SAX SPE cartridge. Zeranol was then analyzed by HPLC using Shimp-pack VP-ODS (4.6x250 mm) column with a mixture of acetonitrile-water (40:60, v/v) as the mobile phase and detected on photo diode array detector at 262 nm. The recoveries of the method of 3 different concentrations (2, 5, and 10 ng/g) of zeranol were 73.96% to 103.48%. The detection limit and quantification limits were 0.54 ng/g and 1.80 ng/g, respectively. Zeranol residues were detected in 12 (11.43%) out of 105 samples at the concentration of 1.67 to 33.29 ng/g and 7 among them exceeding 2.0 ng/g. The results obtained in this study indicated that zeranol was still being used to increase cattle-meat production. Therefore, strict control must be implemented at all stages, from production to consumption, regarding the application of this HGP in livestock.
Reproductive Responses, Metabolic Disorder, Ruminal Fermentation Characteristics, and Milk Production of Postpartum Holstein Cows Fed Steam Flaked of Corn and Barley Grains N. Ahmadijoo; H. Mansoori-Yarahmadi; J. Fakhraei; M. Changizi
Tropical Animal Science Journal Vol. 43 No. 3 (2020): 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.2020.43.3.240

Abstract

This study evaluated the effects of steam flaked of corn and barley grains on the reproductive response, ruminal fermentation characteristics, metabolic disorder, and milk production of postpartum Holstein cows. A total of 40 postpartum Holstein dairy cows were divided into 4 groups (n=10) and fed 1) ground grains (control), 2) steam flacked corn+milled barley, 3) steam flacked barely+milled corn, and 4) steam flaked corn and barley. The animals were treated for 0-30, 30-60, 60-90, and 90-120 days post-calving. Milk yield and compositions, total conception rate, endometritis, pyometra, ruminal fermentation characteristics, ketosis, and acidosis were assessed. This study was conducted in a completely randomized design. The results showed that dietary inclusion of steam flaked grains improved milk yield and compositions during the experimental period compared to the control group (p<0.05), except for cows treated for 0-30d days post-calving. Cows fed steam flaked grains showed a lower occurrence of reproduction and metabolic disorders compared to the control group (p<0.01). Cows fed a combination of steam flaked grains showed better pregnancy rates in the first 100 days and open days of postpartum cows compared to cows in control and a single form of steam flaked barley or corn (p<0.05). Total VFA, acetate, propionate, butyrate, and valerate were higher in cows fed steam flaked compared to the control group (p<0.05). Feeding steam flaked grains is advised for improving reproductive performance, milk variables, and rumen fermentation profiles in dairy cows.
Fermented Coconut Dregs Quality and Their Effects on the Performance of Broiler Chickens Hafsah Hafsah; H. B. Damry; U. Hatta; B. Sundu
Tropical Animal Science Journal Vol. 43 No. 3 (2020): 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.2020.43.3.219

Abstract

This study was conducted to determine the effects of the fermentation duration of coconut dregs (CD) by Saccharomyces cerevisiae and the addition of ammonium sulfate on the growth performance, feed digestibility, carcass, and digestive organ developments. A finely ground CD was autoclaved at 20 psi for 20 minutes and added distilled water to meet 80% moisture content. The autoclaved substrate was added with different concentrations of ammonium sulfate and fermented with Saccharomyces cerevisiae to produce Saccharomyces cerevisiae-fermented CD. A total of 192 day-old-unsexed Cobb broiler chicks were used and kept for 6 weeks. The birds were fed experimental diets ad-libitum. The experimental diets were produced by two durations of fermentation (5 days and 7 days) and three levels of ammonium sulfate (0%, 0.2%, and 0.4%) in 4 replicates. The experimental diets were offered ad-libitum and water were available at all times. Fermentation decreased lipid and crude fiber content of CD and the addition of ammonium sulfate increased protein content and amino acid concentration of CD. The bodyweight gain of birds increased when the CD was fermented for 5 days and with the addition of 0.2% ammonium sulfate. Dry matter digestibility and protein digestibility were improved when CD was added with 0.2% ammonium sulfate. In conclusion, fermenting CD for 5 days increased body weight gain and the addition of 0.2% ammonium sulfate improved the feeding value of the diet and growth of birds.
Defoliation Dynamics on Grazing Horizons in Pastures Intercropped by Panicum maximum, Brachiaria brizantha, and Brachiaria decumbens P. B. Fernandes; R. A. Barbosa; M. G. Morais; C. Medeiros-Neto; A. F. Sbrissia; H. J. Fernandes; G. S. Difante
Tropical Animal Science Journal Vol. 43 No. 4 (2020): 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.2020.43.4.314

Abstract

The aim of this study was to quantify and verify the defoliation dynamics process of the Panicum maximum, Brachiaria brizantha, and Brachiaria decumbens intercropping during the formation of four grazing horizons in lenient grazing intensities and high grazing intensity. Pastures were managed in a pregrazing height of 70 cm, and as post-grazing height, the criteria of 40% and 60% were used in relation to the pre-grazing height. The experimental design used was a completely randomized design with a 3x4 factorial arrangement. The first factor was the cultivars of intercropped grasses consisted of 3 cultivars, i.e., BRS Zuri, Xaraés, and Basilisk. The second factor was grazing horizons consisted of 4 levels, i.e., I: one; II: two; III: three; IV: four. In the intercropping managed with 40% of the forage canopy height removal, oscillations were observed in the severity of defoliation of the extended tiller among the intercropped species, in which the tiller reduction of the ‘Basilisk’ was 32% lower in relation to ‘BRS Zuri’. In the intercropping managed with 60% of the forage canopy height removal intensity, disproportionality was observed among the grasses, because the ‘Basilisk’ suffered a higher severity and frequency of pseudostem defoliation. In intercropped pastures managed under grazing intensities of 40%, as the animal explores the grazing horizons, the vertical distribution of the pseudostem could modify the shape and positioning of the depth of the bite, leading the animal to perform less selective grazing among the species. Due to the higher supply of pseudostem mass at the intensity of 60%, it was possible to infer that there was a reduction in forage intake.
Polymorphism of CD1B Gene and Its Association with Yolk Immunoglobulin (IgY) Concentration and Newcastle Disease Antibody Titer in IPB-D1 Chicken M. F. Al-Habib; S. Murtini; A. Gunawan; N. Ulupi; C. Sumantri
Tropical Animal Science Journal Vol. 43 No. 3 (2020): 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.2020.43.3.197

Abstract

The CD1B gene has an important role in the immune system of poultry by mediating antibody induction. The study aimed to identify the CD1B gene polymorphism and its association with the concentration of IgY and ND antibody titers in IPB-D1 chicken. As many as 111 of IPB-D1 chickens at 21 weeks old were used in this study. Polymorphism identification of the CD1B gene was made using the PCR Sequencing method, while the IgY and ND antibody titers were done using the ELISA and HI test, respectively. The associations of gene polymorphism with IgY and ND antibody titers were analyzed using the General Linear Model (GLM) procedure and Duncan`s Multiple Range test. The results show that there are 4 SNPs in exon 3, i.e., c.550 G>A, c.562 T>A, c.588 A>G, and c.612 C>G. All the SNPs are missense, silent mutations, and polymorphic. The c.550 G>A and c.562 T>A SNPs were in Hardy Weinberg’s equilibrium and heterozygosity (0.054-0.252) condition, while the c.588 A>G and c.612 C>G SNPs were not in equilibrium and their heterozygosity was low (0.072-0.252). The combination of 4 SNPs generated 8 haplotypes, i.e., haplotypes 1, 2, 3, 4, 5, 6, 7, and 8. Haplotypes 1, 2, and 8 had high frequencies (17.6%-23.5%). The c.588 A>G and c.612 C>G mutations were significantly associated (p<0.05) with IgY concentration and c.562 T>A were significantly associated (p<0.05) with ND antibody titers. The haplotypes 2 and 8 with a combination of c.588 A>G and c.612 C>G mutations had higher IgY concentration and ND antibody titers (p<0.05) compared to the other haplotypes. In conclusion, this study has identified the CD1B gene as a polymorphic and is associated with IgY concentration and ND antibody titers in IPB-D1 chicken.

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