Indonesian Journal of Animal and Veterinary Sciences

167 - 174

Authors: Muhammad Daud, Wiranda G Piliang, I. Putu Kompiang

Probiotics is a feed additive in the form of life microorganisms that balance microorganism population in the digestive tract. While prebiotics is a feed substance which is not digested, and selectively improves growth and activity of useful microbes in large intestine. The objectives of this research were to study the carcass percentage and carcass quality of broilers given a ration containing probiotics and prebiotics. Four hundred eighty day-old chicks of broiler Arbor Acres strain were divided into four dietary treatments and three replications (40 birds / replicate). Ration used was consisted of: R1 = basal ration + 0.01% antibiotics (Zinc bacitracin), R2 = basal ration + 0.2% probiotics (Bacillus spp), R3 = basal ration + 0.2% probiotics + 0.5% prebiotics and R4 = basal ration + 0.5% prebiotics (katuk leaves). The variables observed were: carcass percentage, fat content in the abdomen, liver and carcass, cholesterol content in the liver, carcass and blood serum. The results showed that the carcass quality of broiler received probiotics and prebiotics either independently or the combination was significantly (P<0.05) different. The fat content of liver and thigh, and breast cholesterol of R3 was significantly (P<0.05) lower than that of the control (R1). It is concluded that combination of probiotics and prebiotics were able to decrease the carcass fat and cholesterol content at six week of age. Key Words: Probiotics, Prebiotics, Carcass, Broilers

183 - 188

Authors: Asmuddin Natsir

The urinary excretion of purine derivative (PD), which consists of allantoin, uric acid, xanthine and hypoxanthine, was used to estimate Microbial Nitrogen (MN) supply on sheep given oaten hay as basal diet supplemented either with faba beans (faba) or barley fortified with urea (barley-urea). Three growing wethers, with average body weight of 43 ± 2.29 kg, were randomly assigned to one of three experimental diets, i.e. oaten hay without supplement (C), diet C + barley-urea (CB), and diet C + faba (CF), according to latin square design (3 x 3). Results of the experiment indicated that PD excretion for C was lower (P = 0.07) than that of CB and CF (2.84 vs 6.08, 7.67 mmol/d). Absorbed PD and estimation of MN supply for C was less (P = 0.07) than those of CB and CF, namely 1.26 vs 6.64, 8.80 mmol/d and 0.91 vs 4.8, 6.30 g N/d respectively. However, the efficiency of MN synthesis was similar, whether the calculation was based on digestible organic matter fermented in the rumen, DOMR (g MN/kg DOMR, P = 0.20) or based on N intake (g MN/g N intake, P = 0.40). In conclusion, supplementation of oaten hay with different protein supplements may improve the estimation of microbial N supply in the growing sheep but both supplements gave similar results on the estimation of MN supply. Key Words: Purine Derivative, Microbial Protein, Protein Supplement, Sheep

195 - 201

Authors: Simon P Ginting, Rantan Krisnan, Kiston Simanihuruk

The study was aimed: 1) to evaluate the effects of using different additives on the quality of pineapple waste-silage (SLN), and 2) to investigate the responses of goats fed with PAS as a basal feed. Pineapple processing wastes include skins and the pulp left after cannery wastes are pressed to extract the juice. Six additive treatments were used in the processing of pressed pineapple wastes, namely 1) urea (5% DM), 2) Urea (2% DM) and cassava meal (3% DM), 3) molasses (5% DM), 4) urea (2.5% DM) and molasses (2.5% DM), 5) fermented-juice lactic acid bacteria (5% DM), and 6) without additives. Fermentation periode were set at 9, 12, 15, 18 and 21 days. The best SLN obtained from those treatments was then used in feeding trials. Twenty male Boer x Kacang crosses with an initial body weight averaging 13.2 ± 1.9 kg were used in this experiment. The animals were allocated to one of the following feed treatments, in DM: A) Grasses (75%) + SLN (25%), B) SLN (75%) + Concentrates (25%), C) SLN (50%) +Concentrate (50%), and D) SLN (25%) + Concentrates (75%). Using molasses as additive material at 5% and 15 days of fermentation period gave the best chemical and physical characteristics of the SLN. Its crude fiber content decreased and it showed the lowest pH (4.7) The silage showed temperature at 280C, and its taste was sour, and no fungi contamination. The DM and OM intakes and DM, OM and N digestibility were not different (P>0.05) between the animals fed 75% Grass/25% CON and 75% SLN/25% CON. When the proportion of concentrates in the rations was increased, the feed intake and digestibility were increase significantly (P<0.05). ADG (71.3 vs 68.8 g) and feed efficiency (11.2 vs 13.4) was similar between the 75% Grass/25% CON and 75% SLN 25% CON groups. ADG increased significantly (P<0.05) when the proportion of concentrates in ration was increased to 50% (82.6 g) or to 75% (89.1 g). N retention was positive in all treatments, and it was increased significantly (P<0.05) as the proportion of concentrates in ration increased. It is concluded that pineapple wastes could be preserved to silages using molasses as additive material. Pineapple waste silage could be used as roughage to substitute grass in ration. When fed with the pineapple waste silage the responses of goats will increase as the proportion of concentrates in the ration increased. Key Words: Pineapple Wastes, Silages, Goats

212 - 217

Authors: L. Hardi Prasetyo, Triana Susanti

A selection program is one of many important tools in livestock breeding in improving the quality of breeding stock. The choice of an effective selection method requires some information on the value of genetic parameters for some economically important traits, such as heritabilities and genetic correlation coefiicients. This experiment used 25 drakes and 100 ducks of each Alabio and Mojosari ducks, mated at random 1 drake to 4 ducks. A number of ducklings were obtained from each mating in each population, and their body weights were observed from hatching to 8 weeks old. Results showed that the heritability estimation for body weight to 8 weeks old were generally low either in Alabio or in Mojosari, ranging between 0.061 to 0.227. The highest heritability estimation was obtained for 6-week body weight 0.151 for Alabio and 0.227 for Mojosari ducks. The estimates of genetic correlation among body weights varied widely but generally high. It is concluded that 6-week body weight can be considered as a selection criterion depending on the selection objective in the local Indonesian ducks. Key Words: Heritability, Genetic Correlation, Ducks

225 - 237

Authors: Ismeth Inounu, Subandriyo ., E Handiwirawan, L.O Nafiu

Crossing of Garut (GG) sheep with St. Croix sheep (HH) and Moulton Charollais (MM) resulting HG sheep (♂HH X ♀GG) and MG sheep (♂MM X ♀GG) was done by Indonesian Research Institute for Animal Production. The work continued by crossing MG and HG sheep to obtain HMG (♂HG X ♀MG) and MHG (♂MG X ♀HG) sheep. The study was continued by selection program based on phenotypic performance. Estimation of breeding value and genetic trends were done in order to study the effectiveness of selection program and to study the genetic progress of each breed. The breeding value was estimated by Best Linear Unbiased Prediction (BLUP) method using Variance Component Estimation (VCE4) software to calculate variance component and using Prediction and Estimation (PEST) to calculate Breeding Value. Genetic variations of composite sheep were generally higher than Garut sheep, represented by higher estimated heritability value. Genetic correlation of body weight at diffrent age is high, that makes selection at one age could also increase body weight at any level of age. In general of this population shows positive genetic trend, but fluctuated from year to year. Composite breed tend to have higher estimated breeding value than Garut sheep. Selection method that was practiced in this population showed in line with selection method using breeding value criteria. Key Words: Breeding Value, Genetic, BLUP, Garut Sheep, St. Croix, Moulton Charollais