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Tropical Animal Science Journal

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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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Polymorphism of L-FABP (SNP g. 1593 C>T) Gene and Its Association with Fatty Acid Composition, Carcass, and Meat Quality in Cihateup Duck A. S. Mentari; A. Gunawan; R. R. Noor
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Fatty acid composition, carcass, and meat quality are quantitative traits which are controlled by several genes or polygenic. One of the genes that plays important role in the fatty acid in meat quality and fatty acid composition is liver-type fatty acid-binding protein (L-FABP). The aims of this study were to identify single nucleotide polymorphism (SNP) of liver-fatty acid binding protein (L-FABP) gene and its association with fatty acid, carcass, and meat quality traits in cihateup duck. Cihateup ducks were originated from Tasikmalaya, West Java, Indonesia. The study used a total of 98 ducks aged of 12 weeks old with the average body size of 1.4±0.12 kg for PCR-RFLP analyses and 76 ducks for the association analyses. Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) was used to identify SNP g. 1593 (C>T) of L-FABP gene. The associations of L-FABP genotypes with fatty acid, carcass, and meat quality traits were performed using T-test procedures. The result showed that the SNP of L-FABP gene was polymorphic with three genotypes (CC, CT, and TT). The Chi-square test revealed that the locus of L-FABP (g. 1593 C>T) was in Hardy - Weinberg equilibrium. L-FABP gene was significantly associated (p<0.01) with the carcass portions, providing neck and percentage of neck as well as significantly associated (p<0.05) with saturated fatty acids, i.e., lauric acid (C 12:0) and palmitic acid (C 16:0); polyunsaturated fatty acid, i.e., eicosadienoic acid (C 20:2); carcass portions, i.e. neck and percentage of neck. The SNP g. 1593 (C>T) of L-FABP gene may be a useful marker for selecting and producing duck meat having desirable fatty acids and carcass and meat quality.

Evaluation of Sweet Potato Leaves and Cassava Leaves Inclusions into the Diet Containing Lemuru Oil on Lipid Metabolism in Local Duck U. Nurrofingah; Sumiati Sumiati; Y. Retnani
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

The objective of this study was to evaluate the effects of sweet-potato leaves and cassava leaves inclusions into the diet containing lemuru oil on lipid metabolism of local laying ducks. One hundred and eighty laying ducks with an average body weight of 1657 g were divided into 6 groups of experimental diets with 3 replications and 10 ducks in each replication. The experiment was arranged in a 2 x 3 factorial design. The first factor was the level of sweet potato leaves consisted of 2 levels, i.e., 0% and 5%. The second factor was the level of cassava leaves consisted of 3 levels, i.e., 0%, 5%, and 10%. The variables observed were performance of laying duck, blood, meat, and egg lipid profile, as well as the relationship between the average consumption of β-carotene with cholesterol concentration in the blood, egg, and meat of laying duck. The results showed that there was no interaction and no effect between sweet potato leaf meal (SPLM) and cassava leaf meal (CLM) on feed consumption. Different levels of SPLM and CLM gave a significant interaction effect (p<0.05) on body weight gain, with the best interaction, was 5% SPLM combined with 0% CLM (26.60 g/duck). There was also a significant interaction effect between the combination of 5% SPLM and 10% CLM (p<0.05) for reducing the cholesterol, triglyceride, and LDL concentrations in the blood, meat, and egg. Different levels of SPLM and CLM gave significant interaction effects (p<0.05) on the fat contents of flash in laying duck. The fat content of the liver was significantly decreased by 5% treatment of SPLM (p<0.05). Meat fat decreased significantly with a combination of 5% SPLM and 10% CLM (p<0.05). Treatments with 5% SPLM or 10% CLM reduced blood MDA (p<0.05), while treatments with 10% CLM reduced the MDA in the liver (p<0.05). It can be concluded that the combination of 5% SPLM and 10% CLM in the diets was effective as a source of antioxidants to protect unsaturated fatty acids in the blood, meat, and egg of ducks based on the reduced concentrations of cholesterol, triglyceride, and LDL.

Milk Composition and Milk Quality of Saanen Crossbreed Goats Supplemented by Mineral Blocks M. F. Mohd Noor; N. D. Rusli; K. Mat; C. H. Hasnita; P. Mira
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

The objective of this study was to investigate the effect of urea molasses multi-nutrient mineral block (UMMB) and medicated urea molasses multi-nutrient mineral block (MUMB) supplemented group on milk composition and milk quality of Saanen lactating does. A 90-day feed trial was conducted at a dairy goat farm in Felda Kemahang, Tanah Merah, Kelantan, Malaysia. Twenty four (24) Saanen lactating does (average milk yield < 1 L/d) were randomly assigned to four groups with six (6) goats each. Animals fed a basal diet, which consisted of 3 kg Napier grass (Pennisetum purpureum) and 1 kg commercial goat pellet as a control group. The experimental groups received equal amounts of basal diet with supplementation of UMMB and MUMB which were formulated using local agriculture by-products; and commercial mineral block (CMB), respectively. Milk samples were collected every two weeks for the analyses of milk composition, i.e., protein, fat, lactose, total solids, density, freezing point, pH, and temperature using EKOmilk analyzer. All results were analyzed using one-way ANOVA followed by Tukey’s test by SPSS software version 23. It was found that milk yield in the group supplemented with UMMB (1.52 L/d) was significantly higher (p<0.05), followed by MUMB (1.31 L/d), CMB (0.96 L/d), and control (0.78 L/d). Besides, the different group did not cause significant effect (p>0.05) on milk composition and total bacteria count. Meanwhile, iron milk content in goat supplemented with MUMB (1.46 mg/g) was significantly lowered (p<0.05), approaching the optimum value (0.36-0.75) compared to the control (4.08 mg/kg). In conclusion, UMMB and MUMB supplements had improved milk quality in terms of iron content and fatty acid concentration, which potentially can be utilized as feed supplements to increase the productivity of lactating goats.

Free Ammonia Deliming: Effect of Tartaric Acid Addition as a Deliming Agent on The Quality of Wet Blue and Wastewater A. W. Nugraha; O. Suparno; N. S. Indrasti; Hoerudin Hoerudin
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

The objective of this study was to evaluate the pelt and wastewater characteristics after deliming process in an acid condition by tartaric acid, also wet blue properties that were formed. Various observed variables were the dose of tartaric acid, pelt thickness, calcium content, physical and chemical properties of wet blue, such as tensile strength, tear strength, elongation, shrinkage temperature, and chrome oxide content, as well as the pollutants content of wastewater as chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solid (TSS), and total dissolve solid (TDS). The experiment used a completely randomized design with a factorial arrangement. The first factor was pH variables consisted of 3 levels, i.e., 4, 5, and 6 in the final deliming solution. The second factor was the deliming time consisted of 3 levels, i.e., 45 min, 60 min, and 75 min. Data were analyzed using Analysis of Variance (ANOVA) and then Duncan’s Multiple Range Test (DMRT). The results showed that deliming for 60 min and the pH of 5 at the end of the solution was the best treatment to remove calcium content in the pelt and reduce the thickness of pelt. It did not affect the physical and chemical quality, such as tensile strength, tear strength, elongation at break, and shrinkage temperature of the wet blue produced. Also, the quality of wastewater produced was better than the use of ammonium sulfate as a deliming agent. It can be concluded that the use of tartaric acid as pH regulator of deliming stage at pH 5 for 60 min can be used as an alternative deliming agent to substitute ammonium sulfate.

Cultivated Pastures Affect Nutrient Intake and Feeding Behavior of Sheep J. V. Emerenciano Neto; G. S. Difante; H. R. Medeiros; E. M. Aguiar; L. S. Fernandes; T. F. M. Trindade; M. G. S. Bezerra; H. C. B. Oliveira; R. C. P. Galvão
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Cultivated pastures may increase the meat production of sheep, but it is necessary to understand the plant-animal relationships in a pastoral environment. This study aimed to assess the effect of forage cultivars on the intake and feeding behavior of sheep. Four treatments were evaluated, consisted of the cultivars Panicum maximum cvs. Aruana and Massai and Brachiaria brizantha cvs. Marandu and Piatã. Twenty-four sheep, male of the Santa Inês genotype, were used with six replications per treatment. Daily forage and nutrient intakes were evaluated in addition to time in grazing, rumination, and leisure activities. The animals in the pasture of Aruana grass demanded the most extended times of grazing and rumination (p<0.05). The leisure time was higher (p<0.05) in the animals kept in pastures of Piatã grass. The highest intakes of dry matter and crude protein in g/day (p<0.05) were found in the animals kept in the pasture of Marandu grass, and a smaller intake was found in the animals kept in the pasture of Massai grass. Intake of leaf blades was higher (p<0.05) in the animals kept in pastures of Massai and Marandu. The neutral detergent fiber intake did not differ among the cultivars. It is concluded that pasture structure and chemical composition of tropical forage cultivars influence the nutrient intake and feeding behavior of sheep. The low leaf blade offer of the pasture of the Aruana grass negatively affects the feeding behavior of the sheep, but the crude protein in forage of this cultivar favors the nutrient intake, feed conversion, and performance of sheep.

Adiponectin and Testosterone Levels and Their Correlations with Fertility in Anglo-Nubian x Etawah Grade Crossbred Bucks Hafizuddin Hafizuddin; N. W. K. Karja; L. Praharani; M. A. Setiadi
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

The purpose of the current study was to determine the concentrations of adiponectin and testosterone in various ages of bucks as well as the correlations of adiponectin and testosterone with semen quality as an indicator of fertility. Nineteen Anglo Nubian (AN) x Etawah Grade (PE) (Anpera) crossbred bucks belonged to the Research Institute for Animal Production were classified into four different age groups: 24 months, 30 months, 36 months, and more than 48 months. The concentrations of adiponectin and testosterone in the samples of blood plasma were analyzed using enzyme-linked immunosorbent assay (ELISA). The semen characteristics were evaluated both macroscopically and microscopically. The results of the study showed that plasma concentrations of adiponectin in Anpera bucks at the ages of 24, 30, 36, and more than 48 months were 14.10±1.73 mg/L, 18.36±8.25 mg/L, 20.38±8.67 mg/L, and 15.41±7.31 mg/L, respectively. There was no significant difference in adiponectin concentrations among the age groups (p>0.05). However, there were correlations of adiponectin concentrations with semen volume, sperm morphology, and sperm concentration. Plasma concentrations of testosterone at the ages of 24, 30, 36, and more than 48 months were 9.76±2.46 ng/mL, 9.81±1.56 ng/mL, 10.05±0.94 ng/mL, and 9.93±2.71 ng/mL, respectively. Plasma concentrations of testosterone in Anpera bucks also did not demonstrate a significant difference among the age groups (p>0.05). However, plasma testosterone concentrations had significant correlations with semen volume, sperm motility, and sperm concentration. In conclusion, the plasma concentrations of adiponectin and testosterone hormones had correlations with the semen quality parameters, which are related to fertility.

Factors Affecting Farmers’ Participation in Contract Farming: The Case of Broiler Sector in Indonesia M. Rondhi; J. M. M. Aji; A. F. Hasan; R. Yanuarti
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Contract farming (CF) has been used extensively to integrate broiler value chain both in the developed and developing countries. Participation in CF is associated with the increased farm productivity and farmer income. Therefore, the purpose of this study was to analyze factors affecting Indonesian broiler farmers’ participation in CF. This study used the nationally-representative data of smallholder broiler farmers in Indonesia. The data were the results of the 2014 Indonesian Livestock Farm Household Survey (ILFHS) and consisted of 1,142 farmers distributed in 20 provinces. Logistic regression was used to analyze thirteen factors that potentially affected farmers’ decision to participate in CF. Those factors were age, gender, education, household size, farming experience, farm area, broiler population, cooperative membership, cooperative service, farmer group membership, farmer group service, farmer association, and agricultural extension. The results showed that six factors had statistically significant effects on farmers' decision to participate in CF. Education, land size, population, farmer group, and agricultural extension have a positive influence on farmers' decisions. Meanwhile, cooperative service has a negative effect. Farmer group and agricultural extension service have the strongest effect on participation in CF. The results suggest that farmer groups and extension services to small scale farmers are promising to improve their participation in CF.

Performance of Kerinci Ducks Treated by Cattle Rumen-Fluid Supernatant Addition as Source of Crude Enzyme in Rations A. Budiansyah; Resmi Resmi; Filawati Filawati; U. Haroen
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

The objective of this study was to determine the effect of varying levels of cattle rumen fluid obtained from abattoirs as sources of a crude enzyme on growth performances and carcass characteristics of Kerinci ducks fed rations based on local feed ingredients. The research was carried out using 140 one-week-old male Kerinci ducks. The experiment used a randomized block design consisted of 5 treatments, each with 4 replicate groups and was blocked based on body weight, while each cage unit consisted of 7 ducks. The treatments applied were R1= 0 mL RFS/kg ration (control), R2= R1 + 22 mL RFS/kg ration, R3= R1 + 44 mL RFS/kg ration, R4= R1 + 66 mL RFS/kg ration, and R5= R1 + 88 mL RFS/kg ration. The experimental ducks were fed the experimental ration for 7 weeks and fed ad libitum according to the treatment. At the end of the 7th weeks of treatment, two ducks from each cage were slaughtered and utilized for analysis of carcass and digestive organs parameters. The results showed that the addition of RFS up to a level of 88 mL/kg ration had no significant effect (p>0.05) on feed consumption, feed conversion, carcass weight, and digestive-organ weight. Still, it had significant effects on body weight gain and final body weight. The highest body weight gain and final body weight were achieved with the addition of RFS at the level of 88 mL/kg ration. It can be concluded that the addition of cattle rumen-fluid supernatant as a source of crude enzymes at the level of 88 mL/kg ration improved the growth performance of local Kerinci ducks.

Fecal Microbial Population and Growth in Broiler Fed Organic Acids and Palm Fat-Composed Diet C. H. Goh; T. C. Loh; H. L. Foo; F. Nobilly
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Organic acids (OA) are natural constituents of plant and animal tissues and their uses as feed additives are now being studied worldwide. Organic acids consisted of different acids and mixtures of several acids have an antimicrobial function and promote the growth performance of animals. The current experiment was designed to study the inhibitory activity of the organic acids, palm fat (PF), a combination of organic acids-palm fat (OAPF) against various pathogens and investigate the performance in dietary inclusion of OAPF in broilers. A feeding trial was conducted to determine the growth performance and microbial population in the dietary inclusion of OAPF in broilers. A total number of 96 one-day-old chickens (Cobb 500) were used in this study and divided into two treatment groups with six replicates per treatment. The treatment group was T1 (diet without OAPF) and T1OA (diet with OAPF). The differences among treatment means were tested using an independent t-test. The results showed that T1OA had approximately two-fold inhibitory activity against Escherichia coli E-30 compared to T1. Broilers fed diet supplemented with OAPF had higher (p<0.05) final body weight (BW) and total weight gain (WG) compared to broilers fed T1. Broiler fed with T1OA had lower (p<0.05) feed conversion ratio (FCR) than T1. Inclusion of OAPF in the diet also increased (p<0.05) the lactic acid bacteria (LAB) and reduced (p<0.05) Enterobacteriaceae (ENT) cell population. The inclusion of OAPF in the diet showed significantly improved nutrient digestibility and had a beneficial effect on the growth performances of the broiler chickens with a positive effect on the bacterial population in GIT.

Tillering Capacity of Brachiaria Cultivars in the Brazilian Semi-Arid Region During the Dry Season E. L. L. Véras; G. S. Difante; A. L. C. Gurgel; C. M. Costa; J. V. Emerenciano Neto; J. G. Rodrigues; A. B. G. Costa; M. G. Pereira; L. C. V. Ítavo
Tropical Animal Science Journal Vol. 43 No. 2 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Identifying forage species that are responsive in regions with marked water deficits is one of the greatest challenges for the sustainable development of agriculture. However, information is still lacking about the persistence response of those pastures and their abilities to produce new tissues at the times of water scarcity. We hypothesized that Brachiaria grass has a tillering capacity during water-stress periods. This study thus examined the tillering capacity and structural characteristics of four Brachiaria brizantha cultivars (Xaraés, Piatã, Marandu, and Paiaguás) and one Brachiaria decumbens cultivar (Basilisk) in the Brazilian semi-arid region during the dry season (September to March). The experiment was laid out in a randomized block design with repeated measures over time in which five treatments were tested in four replicates. Tillering parameters, pasture production, and structural variables were evaluated. There was no interaction effect of cultivar × evaluation period on the tiller appearance (p= 0.1774), mortality (p= 0.1952) or survival (p= 0.4469) rates. The highest tiller appearance and mortality rates were observed in Marandu, while the highest survival rates were found in Marandu and Paiaguás. The index of tiller population stability was higher than or equal to 1.0 in all cultivars. Cultivar Basilisk showed the highest herbage mass yield (4448.0 kg DM ha-1), whereas Basilisk exhibited the highest yields of leaf (1845.9 kg DM ha-1), stem (1676.9 kg DM ha-1), and dead material (925.2 kg DM ha-1). The highest leaf:stem ratio (1.8) was found in Marandu. Cultivar Xaraés had the highest canopy (70.8 cm). The B. brizantha and B. decumbens cultivars evaluated in this study have the potential for cultivation in areas with marked water deficits, as is the case of the Brazilian semi-arid region. Cultivars Marandu, Basilisk, and Paiaguás exhibited the greatest tillering dynamics as well as the highest herbage-mass yield.

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Prof. Dr. Ir. Komang G. Wiryawan

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Faculty of Animal Science Building, IPB University (Bogor Agricultural University) Jln Agatis, Kampus IPB Darmaga, Bogor 16680, Indonesia

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Home Page

OAI Link

Editorial Team

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Reviewer

Google Scholar

Contact Name Prof. Dr. Ir. Komang G. Wiryawan

Contact Email kgwiryawan@yahoo.com

Phone +622518421692

Journal Mail Official mediapeternakan@apps.ipb.ac.id

Editorial Address Faculty of Animal Science Building, IPB University (Bogor Agricultural University) Jln Agatis, Kampus IPB Darmaga, Bogor 16680, Indonesia

Location Kota bogor, Jawa barat INDONESIA

Abstract

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Abstract

Contact Name
Prof. Dr. Ir. Komang G. Wiryawan

Contact Email
kgwiryawan@yahoo.com

Phone
+622518421692

Journal Mail Official
mediapeternakan@apps.ipb.ac.id

Editorial Address
Faculty of Animal Science Building, IPB University (Bogor Agricultural University) Jln Agatis, Kampus IPB Darmaga, Bogor 16680, Indonesia

Location
Kota bogor,

Jawa barat

INDONESIA