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Asian-Australasian journal of animal sciences 16건

  1. [국내논문]   Short Review of Global Methane Situation and of Facilities to Reduce in Ruminants in Third Wol1d Countries  

    Islam, M.R. (Department of Agriculture, University of Reading ) , Begum, J. (Bangladesh Academy for Rural Development)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 157 - 163 , 1997 , 1011-2367 ,

    초록

    This paper analyses a number of important areas relating to methane production in ruminants, consequent hazards and different methods of reducing this gas. Clearly methane not only affects on the environment but also on the economy of animal production. Several factors including feed, species, microbes, rumen environment, etc. are responsible for methane production in animals. Although methane production can be reduced by chemical manipulation, defaunation and strategic feeding, the latter was found to be effective because the method is easier to follow than the others. Furthermore, feeding technology could play an important role in reducing methane production particularly in developing countries because of its relative cost effectiveness. however, it needs to compare to what extent it could reduce methane production as well as cost of animal production. Therefore, research program needs to be concentrated on the appropriate feeding system to reduce methane production, consequently pollution and cost of production particularly in developing countries.

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  2. [국내논문]   Effects of Feed Processing and Feeding Methods on Growth and Carcass Traits for Growing-Finishing Pigs  

    Chae, B.J. (College of Animal Agriculture, Kangweon University ) , Han, In K. (College of Agriculture & Life Sciences, Seoul National University ) , Kim, J.H. (College of Agriculture & Life Sciences, Seoul National University ) , Yang, C.J. (College of Agriculture & Life Sciences, Seoul National University ) , Ohh, S.J. (College of Animal Agriculture, Kangweon University ) , Rhee, Y.C. (College of Animal Agriculture, Kangweon University ) , Chung, Y.K. (Pusan & Kyungnam Pig Farmers Cooperative Feed Mill)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 164 - 169 , 1997 , 1011-2367 ,

    초록

    The present experiment was conducted to evaluate the effects of feed processing and feeding methods on growth performance and carcass characteristics of growing-finishing pigs. A total of 72 pigs (LYD, 22.24 kg BW) were employed for a 90-d feeding trial. Treatments were 1) mash dry feeding (MD), 2) mash wet feeding (MW), 3) pellet dry feeding (PD), and 4) extruded pellet dry feeding (EPD). Corn, soybean meal and wheat bran in the basal diets were extruded before mixing and pelleting for EPD diet production. Ileal or fecal digestibility and carcass traits including lean meat percentage and weights of stomach ulcer were also examined. During the growing period, pigs fed PD showed improved (p

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  3. [국내논문]   Effects of Extrusion Conditions of Corn and Soybean Meal on the Physico-Chemical Properties, Ileal Digestibility and Growth of Weaned Pigs  

    Chae, B.J. (College of Animal Agriculture, Kangweon University ) , Han, In K. (College of Agriculture & Life Sciences, Seoul National University ) , Kim, J.H. (College of Agriculture & Life Sciences, Seoul National University ) , Yang, C.J. (College of Agriculture & Life Sciences, Seoul National University ) , Chung, Y.K. (Pusan & Kyungnam Pig Farmers Cooperative Feed Mill ) , Rhee, Y.C. (College of Animal Agriculture, Kangweon University ) , Ohh, S.J. (College of Animal Agriculture, Kangweon University ) , Ryu, K.H. (College of Industrial Science, Kongju National University)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 170 - 177 , 1997 , 1011-2367 ,

    초록

    Two experiments were conducted to evaluate the effects of different extrusion conditions of corn and soybean meal on physico-chemical properties, ileal digestibility of amino acid and growth performance in weaned pigs. In Expt. 1, to compare physico-chemical properties and ileal digestibility of extruded corn and soybean meal, ground corn (2 mm screen) and soybean meal were separately extruded in four different conditions: (1) no preconditioning, low water supply (3.0 l/min) (NCLW), (2) no preconditioning, high water supply (7.0 l/min) (NCHW). (3) preconditioning (steam 3.0 l/min) with low water supply (3.0 l/min) (CLW), and (4) preconditioning (steam 3.0 l/min) plus high water supply (7.0 l/min) (CHW). Twenty-five cannulated pigs ( $L{\times}Y{\times}D$ , 7.62 kg BW for soybean meal, 8.80 kg BW for corn) were employed to determine nutrients digestibility of the extruded feedstuffs. In Expt. 2, a total of 90 pogs ( $L{\times}Y{\times}D$ , 9.18 kg BW) were used for a 28 d feeding trial to compare growth performance of pigs as affected by different extrusion conditions. Before mixing, corn and soybean meal were blended and extruded by the same conditions as described in Expt. 1. corn extruded with NCLW showed the highest (p

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  4. [국내논문]   Partition of Amino Acids Requirement for Maintenance and Growth of Broilers I. Lysine  

    Kim, J.H. (Department of Animal Science and Technology, College of Agriculture and Life Sciences, Seoul National University ) , Cho, W.T. (Department of Animal Science and Technology, College of Agriculture and Life Sciences, Seoul National University ) , Yang, C.J. (Department of Animal Science and Technology, College of Agriculture and Life Sciences, Seoul National University ) , Shin, I.S. (American Soybean Association ) , Han, In K. (Department of Animal Science and Technology, College of Agriculture and Life Sciences, Seoul National University)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 178 - 184 , 1997 , 1011-2367 ,

    초록

    Purified diets containing five graded levels of lysine were fed to a total of 125 growing chicks (25 chicks per treatment) to evaluate lysine requirements for growth and maintenance. A model was developed to separate lysine requirement for maintenance from requirement for growth. Based on weight gain response, the daily lysine requirement for growth was 12.06 mg/g gain and the daily lysine requirement for maintenance was 0.332 times metabolic body size ( $W^{0.75}$ ). Similarly, the lysine requirement for growth was 0.457 mg/mg nitrogen gain and the daily lysine requirement for maintenance was 0.344 times metabolic body size. The plateau of plasma lysine concentration was reached at 354.75 mg intake/day. The total lysine requirement was 414.27 mg/day or 1.0% of the diet, 420.11 mg/day or 1.01% of the diet based on weight gain response and N gain response, respectively. Previous lysine requirements for growing chicks of 1-28 days old were in close agreement with these estimates. As a percentage of protein, lysine requirement was calculated to be 7.3% and the reported lysine content of chick muscle crude protein of 7.46% was closely related.

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  5. [국내논문]   The Effects of Supplementing Methionine plus Cystine to a Low-protein Diet on the Growth Performance and Fat Accumulation of Growing Broiler Chicks  

    Bunchasak, C. (Science of Biological Production, The United Graduate School of Agriculture Science, Gifu University ) , Satoso, U. (Department of Animal Science, Faculty of Agriculture, Benkulu University ) , Tanaka, K. (Department of Animal Science, Faculty of Agriculture, Gifu University ) , Ohtani, S. (Department of Animal Science, Faculty of Agriculture, Gifu University ) , Collado, Cristino M. (University of the Philippines, Los Banos Foundation, INC.)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 185 - 191 , 1997 , 1011-2367 ,

    초록

    This experiment was conducted to determine the effects of a low-protein diet supplemented with DL-methionine plus L-cystine (Met + Cys) on the growth performance and fat accumulation of female broiler chicks during the growing period (3-6 wks old). A low-protein diet (17% CP; 3,200 ME kcal/kg) was supplemented with Met + Cys (1.1 : 1.0) at levels 0.75, 0.94, 1.25, 1.31 or 1.50% of diet, respectively. Another diet with 21% CP and 3,200 ME kcal/kg served as the control group. All essential amino acids were adjusted to meet the National Research Council (1984) requirement for chicks. Feed and water were given ad libitum. Body weight of the chicks fed the low-CP diets supplemented with Met + Cys were heavier than those of the control birds. Feed conversion ratio and feed intakes were not significantly different between and among the treatment groups. Similary, abdominal fat content was not significantly different among the various treatments except that of the chicks fed the low CP diet with 1.25% Met + Cys which was higher than that of the control group. Fatty acid synthetase (FAS), acetyl-CoA carboxylase (ACC) activities and carcass protein content were not influenced by dietary treatments. Carcass fat content was lowest in chicks fed low CP diet with 0.75% Met + Cys and highest in the group that received 1.50% Met + Cys supplementation. Liver triglyceride increased as Met + Cys supplementation level increased. Various lipid fraction concentrations (cholesterol ester, free cholesterol, and phospholipid) in the serum went up as Met + Cys increased up to 1.25% after which it levelled off. Results of this experiment suggest that it is possible to reduce dietary protein level from 21% to 17% for growing broiler chicks by the supplementation of Met + Cys when other EAA were sufficient.

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  6. [국내논문]   Study on the Performance of Different Genotypes of Ducks under Village Condition  

    Jalil, M.A. (Bangladesh Livestock Research Institute ) , Ali, A. (Bangladesh Livestock Research Institute ) , Begum, J. (Department of Agriculture, University of Reading ) , Islam, M.R. (Bangladesh Livestock Research Institute)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 192 - 195 , 1997 , 1011-2367 ,

    초록

    Thirty adults Desi and Khaki Campbell ducks were distributed to 6 farmers of Chakcharpur village of Mymensingh district. These ducks were subjected 3 types of mating e.g. Desi ${\times}$ Desi, Khaki Campbell ${\times}$ Khaki Campbell and Khaki Campbell ${\times}$ Desi-having 10 ducks (male : female = 1 : 4) in each mating group. Each mating group was then divided into two having 5 ducks(male : female = 1 : 4) and distributed to 2 farmers. After collecting eggs from each mating category, these were hatched by broody hens from which a total of 90 day old ducklings, 30 from each genotype were raised from birth to 90 days after the onest of laying. Although the weight of the day old chicks were similar in all genotypes (40-43 g), body weight was the highest (p ${\times}$ Desi (1,543) before the onset of laying followed by Khaki Campbell (1,552 g) and Desi (1,448 g) ducks. Khaki Campbell attained maturity at an earlier (p ${\times}$ Desi, (154 days) and Desi (161 days) ducks. Khaki Campbell laid maximum (p ${\times}$ Desi, (30) and Desi (18) ducks 90 days after the onset of laying. However, eggs were heavier (p ${\times}$ Desi (6.66%) and Khaki Campbell (16.66%) ducks. The results presented here indicated the superiority of Desi ducks over the other two genotypes with respect to egg weight, fertility, hatchability and mortality under village condition. Pure and crossbreds, on the other hand, were heavier at sexual maturity at relatively younger age and laid more eggs.

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  7. [국내논문]   Effects of Seeding Rates and Phosphorus Levels on the Productivity of Atylosia scarabeoides (Benth.)  

    Iji, P.A. (Department of Animal Science, The University of Adelaide ) , Kolawole, O.A. (Department of Animal Science, Ahmadu Bello University ) , Bawa, G.S. (Department of Animal Science, Ahmadu Bello University)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 196 - 200 , 1997 , 1011-2367 ,

    초록

    Glasshouse investigations were carried out to investigate the development and yield of Atylosia scarabeoides on soils of the northern guinea savanah zone of Nigeria. Seeds were sown at four rates 50, 75, 100 and 125 kg/ha. Single superphosphate (SSP) fertilizer was applied at sowing at four rates 0, 60, 90 and 120 kg/ha. Seeding (plant) population at one month and at harvest was significantly (p

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  8. [국내논문]   Sweating Rates and Thermoregulation in Male and Female Bali Cattle  

    Kasa, I Wayan (Biology Department, Udayana University)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 201 - 205 , 1997 , 1011-2367 ,

    초록

    An experiment has been conducted to compare the sweating rate between male and female Bali cattle under tropical conditions in Bali, Indonesia with dry bulb (DB) temperatures varying from 25 to $34.5^{\circ}C$ and relative humidity (RH) 70 to 98%. Rectal temperature (Tr) was significantly different (p $39.4^{\circ}C$ compared to 39.2 vs $38.8^{\circ}C$ on weeks 1 and 8 respectively). There were significant effects on RR associated with both $week{\times}sex$ (p $sex{\times}time$ (p $36.4^{\circ}C$ ). With prolonged working, there were marked increase in RR were recorded after 30 minutes (the overall increase was $12.4^{\circ}C$ ). Sweating rate (SR) differed significantly between sexes (p $225.3g/m^2/h$ ) than males ( $238.8g/m^2/h$ ). With increasing time, the highest SR was achieved after 30 minutes of exercise of $313.3g/m^2/h$ .

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  9. [국내논문]   The Effect of Supplementation of Jackfruit Leaves (Artocarpus heterophyllus) and Mashkalai (Vigna mungo) Bran to Common Grass on the Performance of Goats  

    Islam, M. (Dept of Animal Science, University Pertanion Malaysia ) , Chowdhury, S.A. (Bangladesh Livestock Research Institute ) , Alam., Chowdhury (Department of Animal Science, Bangladesh Agricultural University)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 206 - 209 , 1997 , 1011-2367 ,

    초록

    The effect of supplementation of Jackfruit (Artocarpus heterrophyllus) tree leaves and mashkalai (Vigna mungo) barn on the intake and digestibility of freshly cut common grass by Black Bengal goats was evaluated. Twelve castrated goats of approximately 5-6 months age were randomly allocated to three dietary treatments: freshly cut common grass ad libitum, common grass+100g Jackfruit tree leaves and common grass+100g mashkalai bran. Although digestibilities of dry matter, organic matter, nitrogen and neutral detergent fibre were very similar in the grass alone and mashkalai bran supplemented goats but the values were significantly (P

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  10. [국내논문]   Estimation of Ruminal Degradation and Intestinal Availability of Crude Protein in the Animal-Origin Feedstuffs Using Mobile Nylon Bag Technique  

    Lee, S.C. (National Livestock Research Institute, Rural Development Administration ) , Moon, Y.H. (Department of Dairy Science, Chinju National University)
    Asian-Australasian journal of animal sciences v.10 no.2 ,pp. 210 - 214 , 1997 , 1011-2367 ,

    초록

    Ruminal degradation characteristics and intestinal availability of crude protein (CP) in four animal-origin feeds (fish meal, meat meal, viscera meal, feather meal) were estimated by mobile nylon bag technique. Three ruminally and duodenally cannulated Holstein dairy cows (average body wt. 550kg) fed a diet containing 40% concentrate and 60% orchard grass hay on a dry matter (DM) basis. Assuming that the outflow rate of diet in rumen is 5% per hour (k =0.05), contents of quickly degradable CP (QDP), slowly degradable CP (SDP), and undegradable CP (UDP) in the rumen were 27.6%, 9.4%, 63.0% for fish meal, 34.3% 28.1%, 37,6% for meat meal, 43.9%, 12.5%, 43.6% for viscera meal, and 14.4%, 15.8%, 69.8% for feather meal, respectively. Intestinal CP degradability was 51.0% for fish meal, 27.2% for meat meal, 37.9% for viscera meal and 56.2% for feather meal. Available UDP in the intestinal tract was contained 288 g, 217 g, 246 g and 423 g per kilogram DM of diet in fish meal, meat meal, viscera meal and feather meal, respectively.

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