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Journal of the Indonesian Tropical Animal Agriculture
Published by Universitas Diponegoro
ISSN : 20878273     EISSN : 24606278     DOI : -
Journal of the Indonesian Tropical Animal Agriculture (JITAA) is a double blind peer-reviewed publication devoted to disseminate all information contributing to the understanding and development of animal agriculture in the tropics by publication of original research papers
Articles 511 Documents
PRODUCTION AND CHARACTERIZATION OF CRUDE INTRACELLULER PHYTASE FROM RECOMBINANT BACTERIA pEAS1AMP Nuhriawangsa, A.M.P.; Bachruddin, Z.; Sajidan, S.; Wibowo, A.
Journal of the Indonesian Tropical Animal Agriculture Vol 34, No 4 (2009): (December)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.34.4.265-271

Abstract

This research was aimed at producing a crude intracellular phytase characterized from recombinantbacteria. The recombinant bacteria (pEAS1AMP) was produced by way of transforming pET-22b(+)+pEAS1 into competent E. coli BL21 and E. coli BL21(DE3) cells. Crude intracellular phytaseproduction was induced using 1,5 mM Isopropyl-β-D-thiogalactopyranosid (IPTG). Recombinantbacteria product and enzyme activity test followed the Sajidan method. E. coli BL21(+)pEAS1 and E.coli BL21 (DE3)(+)pEAS1 recombinant bacteria showed growth after 20 hours and 10 hours oftransformation. Phytase activity of E. coli BL21 (DE3)(+)+pEAS1 showed higher than those of E. coliBL21(+)+pEAS1. Crude intracellular phytase of pEAS1AMP recombinant bacteria has an optimumactivity at pH 5, 40oC, incubation period of 60 minutes, substrate concentration of 2%, molecular weight(MW) of 47.3 kDa, Km = 15.91 υM and Vm = 2.41 υM/second. Mg2+ acts as a cofactor but Fe3+ (10-4M) acts as an inhibitor.
Prediction of meat quality in Bali cattle using ultrasound imaging Jakaria, J.; Khasanah, H.; Priyanto, R.; Baihaqi, M.; Ulum, M. F.
Journal of the Indonesian Tropical Animal Agriculture Vol 42, No 2 (2017): June
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.42.2.59-65

Abstract

The objective of this study were to predict carcass quality characteristics in Bali cattle using ultrasound imagery. The Number of samples were 81 heads of Bali cattle consist of bulls (62 heads) and cows (19 heads) with various age ranging from 1 to 6 years were collected their body weight and carcass qualities including backfat thickness (BF), longissmus dorsi thickness (LD), rump fat thickness (RF), rump thickness (RT), marbling score (MS) and the percentage of intramuscular fat (PIF). Those were estimated using ultrasound performed on 4.5-6,5 MHz frequency with depth of 8.8-13 cm. The BF, LD, MS and PIF measurement were applied on 12th-13th ribs, while the RT and RF measurement were conducted between ischium and illium. MS determination was calculated using Aus-Meat standard, while PIF was analysis based on Deaton and Rouse (2000). Body weight and carcass quality among traits were analyzed using descriptive and correlation procedures. The results showed that performance of body weight and carcass quality differs between Bali bulls and Bali cows, as well as among the age variations. Correlation analyses among traits (body weight and carcass quality) showed strong positive correlation (P<0.05) ranging from 0.291 to 0.938. In conclusion, ultrasound imaging method could be used to estimate carcass quality characteristics in Bali cattle.
THE GROWTH PATTERNS OF CARCASS TISSUES WITHIN WHOLESALE CUTS IN FATTENING STEER Priyanto, R.; Johnson, E.R.; Taylor, D.G.
Journal of the Indonesian Tropical Animal Agriculture Vol 34, No 3 (2009): (September)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.34.3.153-158

Abstract

An investigation was conducted on beef carcasses, aimed at identifying the growth patterns of wholesalecuts and their tissues in steer during fattening phase. This study involved 69 grass-fed steers with a liveweightrange of 300 to 600 kg. They had entered, or were progressing along, their fat deposition phase. Anallometric model (Huxley, 1932) was used to study the growth patterns of carcass tissues within wholesalecuts. In general, The growths of muscle and fat within wholesale cuts followed similar patterns. Somedifferences in growth patterns between muscle and fat were identified on the dorsal region. The growth impetusfor fat moved from the thoracic backwards to the lumbar region which was the reverse of the growth impetus formuscle. Differential growth patterns occurred between intermuscular (IM) fat and subcutaneous (SC) fat. WithIM fat, its growth movement was similar to that of total fat where there was a concentration of growth in thelumbar area and thin flank as side weight increased. With SC fat, there were growth movements from the ventralregion to the dorsal region of the carcass. Bone growth within wholesale cuts showed a less clear pattern.
THE INFLUENCE OF AGRIBUSINESS SUBSYSTEM ON BEEF CATTLE FATTENING FARM’S PROFIT IN CENTRAL JAVA Prasetyo, E.; Sunarso, S.; Santosa, P.B.; Rianto, E.
Journal of the Indonesian Tropical Animal Agriculture Vol 37, No 2 (2012): (June)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.37.2.121-126

Abstract

This study was aimed : (i) to know the subsystem implementation and agribusiness planning inbeef cattle fattening; (ii) to count the profit of beef cattle farming; (iii) to analyze the effect ofagribusiness subsystem implementation and agribusiness planning to beef cattle fattening profit. Thisstudy was carried out using survey method and the elementary units were feedlot farmers. The samplewas determined by Purposive Quota Sampling Method on 112 respondents spread across five regencies,namely Blora, Rembang, Grobogan, Wonogiri, and Boyolali. Data were collected from primary andsecondary sources. The data analysis used quantitative descriptive and inferential statistics method,which include scoring, financial, and multiple linear regression analysis. The results showed that : (i) theimplementation of agribusiness subsystem (including preproduction subsystem, marketing, andagribusiness support services) and agribusiness planning were not so good category, while the cattlefarming subsystem was moderate category; (ii) the average of farming scale in each feedlot farmer was2.95 head of cattle with the profit rate was IDR 1,044,719 per fattening period during 6.68 months(equivalent to IDR 156,395 per month); (iii) agribusiness subsystem and agribusiness planning hadsignificant impact on feedlot farmer profit simultaneously, but preproduction subsystem and theagribusiness support services subsystem partially had a significant impact on feedlot farmer profit.
Cross-sectional survey on environmental pollution surrounding poultry production cluster area Martindah, E.; Ilham, N.
Journal of the Indonesian Tropical Animal Agriculture Vol 44, No 1 (2019): March
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.44.1.56-64

Abstract

This study was carried out to determine the environmental pollution surrounding poultry production cluster (PPC). A cross-sectional survey on environmental pollution surrounding PPC was conducted in the districts of Subang and Ciamis, West Java Province, Indonesia. Information of farmers aspiration on environmental pollution and sanitation issues related to the existence of PPC was collected by semi-structured questionnaires. Ammonia gas (NH3) in feces was tested qualitatively, and ground water was analyzed for Coliform and Salmonella sp. contamination. The result showed that dust and ammonia gases from feces (Subang 300-450 ppm, Ciamis 25-525 ppm) pollute the environment and caused an unpleasant odor surrounding the pens. Fly population was increasing during the harvest time of chickens,causing community daily lives were not comfortable. Water quality surrounding PPC indicated that Salmonella sp. contamination was negligible however most samples from Subang and Ciamis were contaminated with coliform bacteria (<3 MPN/ml–27 MPN/ml). Improvement on management policy to reduce the environmental pollution is thus still needed to develop surrounding the PPC areas.
IN VITRO EVALUATION OF CONCENTRATE FEED CONTAINING Indigofera zollingeriana IN GOAT Suharlina, S.; Astuti, D. A.; Nahrowi, N.; Jayanegara, A.; Abdullah, L.
Journal of the Indonesian Tropical Animal Agriculture Vol 41, No 4 (2016): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.41.4.196-203

Abstract

This study was conducted to evaluate the fermentability and nutrient digestibility of concentrate feed containing Indigofera zollingeriana using in vitro technique. Randomized complete block design was used on 3 types of concentrate feed and 4 groups (replicates) of goat's rumen liquid. The concentrate feeds were R1, R2 and R3 containing I. zollingeriana at 0 (control), 20 and 40%, respectively. Variables observed were total gas production, in vitro dry matter digestibility (IVDMD), organic matter (IVDOM), and crude protein (IVDCP), volatile fatty acid (VFA) profiles and NH3 concentration. Data were analyzed using analysis of variance (ANOVA). Results showed that there was no significant effect of R3 on IVDMD, IVDOM and IVDCP as compared to R1 and R2. However, there was significant difference (P<0.05) of the parameters between R1 and R2 (P<0.05). There was no significant effect (P<0.05) of different Indigofera levels on total gas production. The partial VFA of each concentrate feeds was not significantly different, but the percentage of acetic acids of concentrates containing I. zollingeriana were higher than those of control (P<0.05). The concentration of rumen NH3 of R2 was lower than R1 and R3 (P<0.05) even though the IVCPD of R2 was higher than R1. It could be concluded that the inclusion of I. zollingeriana as concentrate feed ingredient at 20% maximum level .
EFFECT OF SAPONIN AS DEFAUNATING AGENT ON IN VITRO RUMINAL FERMENTATION OF FORAGE AND CONCENTRATE Hanim, C.; Yusiati, L.M.; Alim, S.
Journal of the Indonesian Tropical Animal Agriculture Vol 34, No 4 (2009): (December)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.34.4.231-235

Abstract

nin level in fermentation medium (0, 0.1, 0.2, or 0.3 mg/ml), and many kinds of feed (king grass,rice bran, and king grass:rice bran, 60:40 w/w) on protozoa numbers, ammonia concentration, microbialprotein, pH and cellullase activity. Each treatment was consisted of three replicates. Fermentation wasdone in syringe and used in vitro gas production medium. The data obtained were analyzed by varianceanalysis using factorial design (4x3). The differences between mean values were analyzed by Duncan’snew multiple range test (DMRT). The result showed that protozoa numbers decreased 17.22, 42.73 and49.57% (P<0.01) for 0.1, 0.2, and 0.3 mg/ml saponin, respectively from 8.19×103/ml in the control. Theaddition of 0.1 mg/l saponin increased ammonia concentration from 33.04 mg/100 ml (without saponin)to 37.12 mg/100 ml (P<0,01), whereas the addition of 0.2 and 0.3 mg/ml saponin decreased ammoniaconcentrations by 1.69 and 16.50% (P<0.01) compared to the control. Microbial protein, cellullaseactivity and pH were not affected neither by saponin nor kind of feed. Protozoal numbers and ammoniaconcentration in the rumen were lower (P<0.01) with king grass as substrat than that with rice bran, orking grass: rice bran. In general, no interactions between saponin and kind of feed were observed, exceptfor ammonia concentration. It can be concluded that level of 0.2 mg/ml saponin have antimicrobialproperties, particularly in suppressing protozoa, which may prove beneficial to ruminal fermentation andmay lead to lower ruminal ammonia concentration, but it did not have negative effect on pH, microbialprotein and cellullase activity. King grass as a substrate decreases protozoa numbers and ammoniaconcentration.
THE DIFFERENCES OF PHYSICAL, CHEMICAL AND FATTY ACID PROFILE OF MEAT QUALITY OF MALE MUSCOVY (Cairina moschata) AND LOCAL DUCK (Anas plathyrinchos) Ismoyowati, I.; Iriyanti, N.; Santosa, A.
Journal of the Indonesian Tropical Animal Agriculture Vol 37, No 4 (2012): (December)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.37.4.250-256

Abstract

This research was aimed to differentiate the meat physical, chemical and fatty acid profile qualityin muscovy and other local ducks (Magelang, Tegal and mojosari). Completely Randomized Design wasused in this study. Breed used as treatments was muscovy, Magelang, Tegal and Mojosari ducksrepeated 5 times. Analysis of variance and honestly significant difference were used to analyze data.Result showed there were differences in physical quality of meat in the term of colour, pH, and cookingloss, while water holding capacity and tenderness were relatively similar. Fat, cholesterol and proteinwere relatively similar. Muscovy duck has a higher polyunsaturated fatty acids (PUFAs) than the otherlocal duck. In conclusion, the physical and chemical quality of meat of muscovy and other local duckswere silimar. Muscovy duck meat is healthier to consume due to a higher polyunsaturated fatty acidsthan the other local ducks.
Impact of trade liberalization on Indonesian broiler competitiveness Nurfadillah, S.; Rachmina, D.; Kusnadi, N.
Journal of the Indonesian Tropical Animal Agriculture Vol 43, No 4 (2018): December
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.43.4.429-437

Abstract

International trade has been growing rapidly and requires high competitiveness. Broiler industry is one of the sectors that might be threatened by trade liberalization. This study aims to analyze the competitiveness and government policies impact on the broiler competitiveness in actual and free trade condition. This research was conducted in Bogor and Subang using survey method. The sample consisted of 30 local farmers selected by random sampling and an integrated company selected purposively. Further data is analyzed using Policy Analysis Matrix (PAM). Privat Cost Ratio (PCR) and Domestic Resource Cost Ratio (DRCR) analysis showed that small farm has a competitive advantage, but does not have a comparative advantage. While the production by integrated company has comparative and competitive advantages. The policy analysis indicates that overall policies is protective and give benefit to producers. There are three scenarios that are used to portray free trade: reduction in import tariffs, interest rates, and logistics costs. The implementation of free trade will reduce competitiveness in actual price but increase competitiveness in the undistorted market condition.
THE EFFECT OF EXPIRED BREAD MEAL AS CORN SUBSTITUTION IN DIET ON BROILER PERFORMANCE Kismiati, S.; Sarengat, W.; Atmomarsono, U.; Salaamun, R.; Alvi, M.F.
Journal of the Indonesian Tropical Animal Agriculture Vol 35, No 2 (2010): (June)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.35.2.115-119

Abstract

An experiment was conducted to investigate the expired bread meal used as corn substitution in thebroiler diets to optimally the product performance. One hundred day old chick (DOC) male broilerswere given the same diet until 2 weeks old, and then given the treatment diet until 7 weeks of age. ACompletely Randomized Design was used in this study. Data were analyzed by variance of analysis, andfollowed by Duncan’s Multiple Range Test The treatments were : T0 = control feed (without expiredbread meal), T1 = corn substituted with 10% expired bread meal, T2 = corn substituted with 20%expired bread meal, T3 = corn substituted with 30% expired bread meal and T4 = corn substituted with40% expired bread meal. The result indicated that corn substituted with expired bread meal up to 40%has not significantly affected on carcass weight, carcass percentage and feed conversion, but decreasedsignificantly on feed consumption and body weight gain. It can be concluded that the use of expiredbread meal 30% of the proportion of corn produced the most optimal broiler performance. Thesubstitution corn with expired bread meal 40% was decreased body weight gain.

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