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All Journal Journal of the Indonesian Tropical Animal Agriculture Tropical Animal Science Journal
E. Purbowati
Faculty of Animal and Agricultural Sciences, Diponegoro University, Tembalang Campus, Semarang 50275
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy

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Indirect evaluation of digestive tract function on male lambs and ram based on feed digestibility and eating behavior Prima, A.; Rianto, E.; Purbowati, E.; Purnomoadi, A.
Journal of the Indonesian Tropical Animal Agriculture Vol 43, No 2 (2018): June
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.43.2.124-130

Abstract

This studywasaimed to examine the development and function ofdigestive organsof lamb in digesting feed based on feed digestibility valueandeating behaviour. The materials used were 11 lambs aged 3-4 months, body weight(BW)14.78 ± 1.99 kg (CV 3.98%), and 11 ramsaged 10-12 months, BW 22.18 ± 1.81 kg (CV 3.29%). The study used a completelyrandomized design of 2x2 in nestedpatterns. There were two ages compared (lambs vs ram) and every age was nested the diet i.e.100%Napiergrass (G100) vs mixed pellet 50% grass and 50% concentrate(G50C50). The diet was given at 3.5% of BW. Parameters observed were dry matter intake(DMI)and digestibility, eating and ruminating time. The results showed that were no significant differences between lambs and rams in DMI (averaged 3.33% BW),digestibility (averaged 49.00%), eating (192.56 min/d), and ruminating (364 min/d). Animalsgiven diet G50C50 had higher (P<0.05) DMI (666 vs 565 g/d), digestibility (50.49%vs 47.53%), and less (P<0.05) eating (47 vs 338 min/d) and ruminating (305 vs 423 min/d), as compared withthose fed diet G100.It is concludedthat the digestive tracts of lambs had developed and function to the stage similar to ram. 
MULTIVARIATE ANALYSIS ON CRANIUM MEASUREMENTS OF THREE BREEDS OF GOAT IN CENTRAL JAVA Suryani, H.F.; Purbowati, E.; Kurnianto, E.
Journal of the Indonesian Tropical Animal Agriculture Vol 38, No 4 (2013): (December)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.38.4.217-224

Abstract

The purposes of this study were to 1) identify the size and shape of cranium of three breeds ofCentral Java local goats (Kejobong, Kacang and Ettawa Grade), 2) examine the effectiveness ofmultivariate analysis of cranial measurement and 3) estimate genetic distance among three local breedsof goat. The material used was cranium from female Kejobong, Kacang and Ettawa Grade goats, agedfor about 4 years (determined on the basis based on eruption of teeth), the number of specimens were30; 10 and 10, respectively. Twenty seven cranial measurements used to data observed, multivariateanalysis of GLM, CANDISC, PRINCOMP and DISCRIM were used to analysis all data observed.UPGMA of MEGA 5 was used to illustrate the distance among breeds. Results showed that EttawaGrade tended to show the largest size, followed by Kejobong and Kacang goats. Kejobong goat showedsmall cranium size with large cranium shape. Different things was found in Kacang goats in whichcranium size and cranium shape are relatively small. Kacang breed showed the smaller size (PrincipalComponent I or PC-1 = -2) compared to Ettawa Grade (PC-I = 3) and Kejobong goat (PC-I = -1).Analysis for classifying three breeds of local goat resulted in high accuracy (100%) as indicated by 0%of erroneous level (0%). Kejobong goat was close to in the genetic relationship to Kacang goatcompared to Ettawa Grade goat.
Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-Substrate Purwasih, R.; Saindah, M.; Triyuwanti, H.; Yusuf, F. S.; Purnomoadi, A.; Purbowati, E.; Sutaryo, S.
Tropical Animal Science Journal Vol. 48 No. 1 (2025): 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.2025.48.1.37

Abstract

A method to increase methane production in dairy cow manure (DCM) is to co-digest DCM with nutritious biomass. This study aimed to determine the methane yield during the anaerobic co-digestion of DCM and carica seeds meal (CSM). Four continuous stirred tank reactors were operated with treatments P0 (100% DCM), P1 (98% DCM and 2% CSM), P2 (96% DCM and 4% CSM), and P3 (94% DCM and 6% CSM). The results demonstrated that the presence of CSM as a co-substrate of DCM significantly increased (p<0.05) methane production. The average methane production resulting from P0, P1, P2, and P3 in units of mL/g substrate and mL/g volatile solid (VS)added were 10.05, 20.54, 32.26, and 19.29 mL/g substrate and 171.49, 278.96, 357.92 and 179.30 mL/g VSadded, respectively. Thus, the highest methane production was obtained at P2. Treatment P3 contained a substrate containing excessively high protein and organic content, negatively affecting anaerobic microorganisms’ activity. The presence of CSM as a co-substrate enhanced methane production by 91.94%–221.06% compared with the control. The presence of CSM as a co-substrate significantly increased (p<0.05) volatile fatty acid and total ammonia nitrogen (TAN) concentrations and the pH of digested slurries but did not affect VS reduction. The co-digestion of DCM and CSM must consider the proportion of organic material in the mixed substrate. In this study, the mixed substrate with a VS proportion of 51.68% was the best-mixed substrate.
Productivity, Carcass Traits, and Meat Quality of Local Lambs Fed with Carica pubescens Seeds Meal Idayanti, R. W.; Istianah, I.; Putri, S. N. H.; Fauziah, A. N.; Murniyadi, Z.; Esnadewi, L. G.; Purbowati, E.; Arifin, M.; Purnomoadi, 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.2024.47.1.87

Abstract

This study aimed to determine the effect of substituting agricultural by-products of Carica pubescens seeds meal with some concentrates on productivity, carcass characteristics, and meat quality of local lambs. Eighteen male thin-tailed lambs with an average initial body weight of 10.68 ± 1.3 kg (3-4 months old) were treated with a completely randomized design for ten weeks. The feed ingredients were C. pubescens, Pakchong grass (PG), and concentrate (K). Feed ingredients were prepared into complete feed with a balance of forage and concentrate 40:60% with three treatments, namely: T1= 40% PG + 55% K + 5% C. pubescens; T2= 40% PG + 47.5% K + 12.5% C. pubescens; and T3= 40% RG + 40% K + 20% C. pubescens. The use of 20% C. pubescens-treated lambs was statistically different (p<0.05) regarding the increasing BWG (115.60 g/day), CPI (104.96 g/day), FCR (6.40), slaughter weight (19.62 kg), carcass weight (7.83 kg), meat weight (4.49 kg), and fat weight (1.66 kg). The treatment with 12.5% C. pubescens resulted in significantly different increasing tenderness (p<0.05) in longissimus dorsi and biceps femoris muscle pain (2.79 kgf/cm2) and (3.36 kgf/cm2), respectively. The inclusion level of C. pubescens seeds up 20% resulted in higher body weight gain, crude protein intake, feed cost ratio, slaughter weight, carcass weight, and meat weight.
Co-Authors A. Prima A. Purnomoadi E. Kurnianto E. Rianto Esnadewi, L. G. Fauziah, A. N. H.F. Suryani Idayanti, R. W. Istianah, I. M. Arifin Murniyadi, Z. Putri, S. N. H. Rita Purwasih S. Sutaryo Saindah, M. Triyuwanti, H. Yusuf, F. S.