Animal Production

13-19

Authors: Mohammad Hasil Tamzil, Budi Indarsih

This study was designed to determine the phenotype characteristics of Sasak ducks in Lombok Island. The study used 64 Sasak ducks at production stage which were kept intensively by small holder farmers. Observations on the characteristics of the feather color were carried out directly on each animal. The data observed were feather colors, beak color, and the color of the foot and shank, while the data on the size of the body that was observed were body weight, beak length, neck length, back length, breast circumference, back length, thigh length, shank length, and the distance between the two pubic bones. The data obtained were tabulated and analyzed descriptively. The study concluded that the characteristic of the color of feathers in Sasak ducks were dominated by Roman color (50.13%), followed by Tanak color (21.87%), Tongkak color (15.63%), Rombak color (6.25%), and Cemaning color (3.12%). Sasak ducks with medium size were observed to have a relatively long beak, medium-long neck, short back, broad and deep chest, medium height, and the distance between the two pubic bones was quite wide. These characteristics indicate that Sasak ducks are the type of superior Indian Runner having better production ability compared to the other types of Indian Runner duck.

81-92

Authors: Muhammad Muhsinin, Niken Ulupi, Asep Gunawan, I Wayan Teguh Wibawan, Cece Sumantri PDF

The objectives of this study were to identify polymorphism of transforming growth factor β2 (TGF-β2) gene associated with Salmonella pullorum resistance in Indonesian chickens. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assays were used to genotype Indonesian chickens. Analysis of polymorphism was conducted by using PopGen 3.2 software. The effect of genotype on S. pullorum resistance was analyzed using the SAS General Linear Model (GLM) procedure. Genotyping was performed on 278 chickens from 7 Indonesian chicken populations (Sentul, Merawang, Pelung, Kampung, Parent Cobb broiler, The F1 crossbreed of Kampung x Parent Cobb broiler (KB) and F2 KB x KB. The product of amplification was 284 bp. The TGF-β2| RsaI locus was polymorphic in all populations, producing two alleles (T and C) and three genotypes (TT, CT, and CC). The result from the analysis of the allele and genotype frequency showed that the T allele had a higher frequency than the C allele in all populations. The χ2 analysis showed that the 6 chicken populations were deviated from Hardy-Weinberg equilibrium, with the exception of the Parent Cobb broiler chicken. The association result showed that TT genotype was significantly associated with S. pullorum resistance in Sentul chicken. Although the leukocyte concentration, leukocyte differentiation and H/L ratio in Sentul chicken with three of TGF-β2 genotypes (TT, TC, and CC) were not statistically different. In conclusion, polymorphism in the TGF-β2 chicken gene can be used as a candidate marker to increase S. pullorum immune response.

101-110

Authors: Sangle Y Randa, Marlyn N Lekitoo, Deny A Iyai, Freddy Pattiselanno

This paper aimed to evaluate the nutritive value and the quality of ensiled Napier grass (Pennisetum purpureum Schum) and banana (Musa acuminate) peelings. Different levels of banana peeling and Napier grass were used in this study. The levels of Napier grass and banana peeling compared as treatments with four replications were as follows: 100% Napier Grass (NG), 75% (NG) + 25% Banana Peeling (BP), 50%NG + 50%BP, 25%NG + 75% BP and 100%BP. Napier grass and banana peeling were mixed based on the percentage combination as treatments, weighed and placed into empty jam bottle with weights ranging from 64.4 grams to 509.2 grams as a simulated laboratory silo. Samples were stored in eight weeks at the Dairy Training Research Institute. Proximate analyses were done at Animal Nutrition Laboratory Institute of Animal Science while ADF, NDF, IVDMD, and IVOMD were done at the Animal Nutrition Division Laboratory at Dairy Training and Research Institute, UP Los Baños. Physically, the color of silage were light yellow with a little greenish color for 100% napier grass, light to moderately yellow for the three combinations of napier and banana peel and yellow for 100% banana peel. Texture ranged from dry and coarse for napier grass, relatively dry for the combinations and moderately wet for the banana peel. The napier grass had a slightly acidic smell, the combinations had slightly sweet, acidic smell while the 100% banana peel had a sweeter, acidic smell. Likewise, pH before ensiling had ranged from 5.7 (25%NG + 75%BP) to 7.5 ( 100% BP) while after ensiling the pH changed from 4.575 ( 100% napier grass) to 5.75 ( 100% banana peel ). There were significant differences on DM, Moisture, CP, EE, CF, and Ash before ensiling. Similar trend was observed after ensiling except the ash content of all the treatments. ADF and NDF did not show significant variations in all treatments. IVDMD and IVOMD before ensiling varied significantly, but after ensiling only IVDMD of the treatments differed significantly. In terms of physical attributes, nutritive value and digestibility, banana peel can be used as silage material. All treatments generated comparable acceptability when fed to the animal. It is suggested that further study, specifically in vivo trial, will be conducted to validate the feeding and nutritional value of banana peel as alternative silage for ruminants.

119-126

Authors: Efka Aris Rimbawanto, Sri Suhermiyati, Bambang Hartoyo

The objectives of the research were to supply nitrogen for protein synthesis of ruminal microbe from slow release urea and to supply post-rumen protein from soybean meal protected with condensed tannin (CT) from crude Leucaena leaves extract. In Experiment 1, slow release urea (SRU) was made by extrusion of cassava waste-urea, tapioca meal-urea and cassava meal-urea. Evaluation of SRU properties was based on residual nitrogen concentration and ruminal fermentation products (total volatile fatty acid and ammonia-nitrogen) in vitro. In Experiment 2, soybean meal protected with CT from crude Leucaena leaves extract as much as 1,68 g tannin/100 g DM soybean meal. SRU that was selected from Experiment 1 was used as the supplement in sheep ration whose protein source was protected with CT. SRU supplement in basal rations was 0, 6.36, 12.75, 19.11% DM. In vitro result in Experiment 1, showed that SRU of cassava waste, tapioca meal and cassava meal were different (P<0,01) on residual nitrogen content, total VFA, ammonia-N, and fermentation time. The optimum SRU obtained from cassava waste by inhibiting nitrogen hydrolysis up to 14 h. In Experiment 2, SRU supplementation of cassava waste on basal ration whose protein source was protected with CT increased dry matter (DM) degradability (P<0,01), total VFA (P<0,01), ammonia-N (P<0,01), and did not affect crude protein (CP) ruminal degradation. Post-ruminal degradability of DM and CP increased (P<0.01) in line with the increasing supplement, and reached the optimum level at 12,75 – 19,11% DM. In conclusion, cassava waste was a potent SRU through extrusion process and could be harnessed as SRU supplement in ration with protein source protected with condensed tannin to improve ruminal microbe protein synthesis.

134-142

Authors: Krismiwati Muatip, Titin Widiyastuti, Nunung Noor Hidayat, Hermin Purwaningsih, Eko Purwanto, Ghanis Ginanjar Setya

Kebumen district is one of beef development centers in Central Java that requires numerous forage supplies (HPT). Farmers without personal foraging area have to buy forages almost on a daily basis. Forage business is an emerging and prospective business sector to improve farmers’ welfare particularly the income. Government is therefore expected to support in terms of facility and infrastructure to maintain a sustainable business practice. The aim of this study was to investigate the necessity of forage business in cattle development center in Kebumen district, forage marketing channel, forage business revenue, profit margin, R/C ratio and government support in terms of infrastructure or policy related to forage business.