• Korean Journal of Poultry Science
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• v.27 no.3
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• pp.203-208
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• 2000

The present study was conducted to investigate the effects of dietary supplementions of 0.1% probiotic and 0.1% yeast culture on the growth performance and meat quality of broiler chicks. A total of 160 Arbor Acre broiler chicks were randomly allotted to 16 pens ; four pens per treatment and 10 birds per pen. Feeding trial lasted for 6 weeks. The results obtained are summerized as follows : The body weight gain and feed intake was slightly higher in group of broiler chick supplemented antibiotic than those of other treatment groups, but were not significantly different among treatments. The feed conversion were slightly lower in groups of broiler chick supplemented antibiotic and probiotic than those of other treatment groups, but were not significantly different among treatments. The pH of thigh musle was slightly higher in group of broiler chick supplemented probiotic than those of other treatment groups. Crude protein, crude fat and crude ash of thigh muscle were lower in groups of broiler chick supplemented probiltic and yeast culture than those of other treatment groups, but were not significantly different among treatments. The saturated fatty acid content of the thigh muscle was tende to be higher in group of broiler chick supplemented yeast culture, but the unsaturated fatty acid content was tende to be lower in group of broiler chick supplemented yeast culture than those of other treatment groups.

• Korean Journal of Poultry Science
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• v.20 no.1
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• pp.11-15
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• 1993

Environmental measurements were made in 10 broiler confinement houses in order to characterize dust contaminants. Particles were collected by filters on nine stages Anderson Air Sampler, The obtained results were summarized as follows ; 1. The concentrations of the total suspended particles(TSP) were 7.584 mg/$m_3$~11.589mg/$m_3$ in 10 day old broiler houses and 15.836 mg/$m_3$~22.471 mg/$m_3$ in 30 day old broiler houses. 2. The concentrations of the coarse particles were 4.974 mg/$m_3$~18.981 mg/$m_3$ in 10 broiler confinement houses. Therefore, it was found that the coarse particles contributed to TSP between 65.6% and 85.0%. 3. The dust levels were higher in 30 day old broiler houses with TSP averaging about 19.341 mg/$m_3$ than 9.491 mg/$m_3$ in 10 day old broiler houses. In view of the above results , It was concluded that domestic broiler houses need artificial ventilation system.

• Journal of Animal Environmental Science
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• v.5 no.2
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• pp.87-92
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• 1999

Three types of commercial broiler farms were surveyed to evaluate the effects of housing and production systems on environment and performances in broiler production. Environment condition of broiler house was better in windowless type than vinyl house. Ammonia, carbon dioxide and dust in vinyl house was 28ppm, 2,000ppm, 50.5CPM, respectively. Mortality was higher in vinyl house than that of widowless broiler house. Body weights at the age of 39 days were 1,551g, 1,607g and 1,620g of vinly house, open-sided broiler house and windowless broiler house, respectively. The incidence of abnormal carcass from the vinyl house was higher than those of the others.

• Asian-Australasian Journal of Animal Sciences
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• v.6 no.1
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• pp.73-77
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• 1993

Four isocaloric (68.71, 67.07, 66.68 and 66.25% TDN) and isonitrogenous (12.96, 13.36, 13.36 and 12.96% CP) diets without or with 20, 25 and 30% broiler litter were fed to 20 male kids for 90 days. Weight gain and feed efficiency were higher (p < 0.05) for kids offered control diets as compared to kids fed diets containing broiler litter. There was a significant (p < 0.05) decrease in the feed intake with increasing level of broiler litter in the diets. Digestibility for organic matter, crude protein and crude fibre were not affected (p > 0.05) by the inclusion of broiler litter in the diets, whereas inclusion of broiler litter depressed (p < 0.05) the digestibility of dry matter and ash. Nitrogen balance was positive for all diets, however, nitrogen retention decreased (p < 0.01) with the increased level of broiler litter. Blood Na, K, Ca, P and urea-N were within normal range.

• Korean Journal of Veterinary Service
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• v.42 no.4
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• pp.237-243
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• 2019

Avian reovirus (ARV) is the pathogenic agent of tenosynovitis and malabsorption syndrome in broiler, which has caused significant economical losses due to poor feeder efficiency and stunting. In order to determine the prevalence of ARV infection in poultry farms in Jeonbuk province, Korea, we performed a surveillance study by testing 179 cecal samples from 131 broiler farms for virus detection, and 1,181 serum samples from 33 broiler farms (n=292) and 22 broiler breeder farms (n=1,525) for antibody detection in the province. Virological examination using RT-PCR showed that ARV were detected in 26.0% of the tested farms (34/131),with the highest positive rates in broilers of 6 days old or more in summer season. In serological test using ELISA, broiler and broiler breeder farms examined were all ARV antibody positive. In broiler, the positive rate and antibody titers showed a tendency to decrease with age in contrast to those of broiler breeders. Our results indicate that ARV is ubiquitous in broilers and broiler breeders in the province.

• Korean Journal of Poultry Science
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• v.17 no.2
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• pp.93-100
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• 1990

Two experiments were conducted to assess the use of full-fat canola seed and restored oil meal plus oil of canola in the ration for broiler chicks. In the first experiment, broilers received diets containing 10% heated or non-heated full-fat canola seed and conola oil meal mixed with corresponding oil or animal fat. In the second experiment, broiler diets contained 10 or 20% of canola seed and canoia meal mixed with canola oil. Heat treatment of full-fat canola seed and the types of fat mixed with meals had no significant effect on all of broiler performance and nutrient retention parameters investigated. Bioilers consuming 10 to 20% dietary canola seed or mixture of canola meal plus oil performed as well as the control birds. It is concluded that the canola seed or the mixture of restored canola meal plus oil or fat can be well utilized by broiler at dietary levels of 10 to 20%.

• Journal of Animal Environmental Science
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• v.7 no.1
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• pp.33-38
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• 2001

This research was carried out to determine the quantity and characteristics of broiler excreta produced in different age and different types of broiler house. Daily feed intakes of broiler chicks ranged over 160.1~165g/d in the sixth week of age. Female and male broiler consumed 211.3 and 252.9 $m\ell$/d of water in the period, respectively. The amount of excreta produced by female and male broiler was 164.3 and 176.3g/d/bid in the sixth week, but average daily excreta production from birth to the sixth week of age was 90.5g/bird. Accumulated excreta production of broiler per bird in the sixth week was 3,800g. The contents of N, $P_2O_5$ and $K_2O$ in broiler excreta were 4.49, 1.28 and 2.02% in DM basis, respectively. The average moisture contents of litter produced from windowless broiler house, open-sided and vinyl house type broiler house were 18.3, 29.7 and 30.1%, respectively.

• Journal of The Korean Society of Grassland and Forage Science
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• v.10 no.3
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• pp.172-178
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• 1990

This experiment was conducted to enhance nutritional value of whole crop corn silage and increase mixture levels of broiler excreta by adding of corn meal. Treatments were included non mixture(control), adding 10, 20, 30% of broiler excreta and adding 10, 20, 30% of broiler excreta and corn meal as a fresh matter basis, respectively. One liter laboratory silos were prepared. The characteristics of fermentation and micro-organisms during the silage process were assessed. The results obtained are summarized as follows: 1. The crude fiber, NDF and ADF contents were high in whole crop corn(P(O.Ol), crude protein and crude ash contents were high in the broiler excreta(P<0.05), and NFE content was high in corn meal (P< 0.05). 2. Crude protein content of silage was increased(I'$NH_3$-N contents of silage were markedly increased with increasing levels of broiler excreta and corn meal, and was the highest in the 30% broiler excreta treatment(P$meal$ <0.05), and Flieg's value gains "very good" by showing organic acids. 5. Numbers of total bacteria and lactobacilli were $10^5$ to $10^7$ and $10^5$ to $10^6$ , respectively, and were similar in all treatment. Colliform was all but annihilated in the treatment with mixture of broiler excreta and corn rneal.orn rneal.

• Korean Journal of Poultry Science
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• v.23 no.2
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• pp.77-84
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• 1996

The purpose of this paper is to introduce the present situation of broiler breeder industry, and to investigate some problems related to it in Korea. The number of broiler breeding farms were 231 in 1990. It peaked to 264 in 1992, but decreased afterward to 232 in 1995. The number of broiler parent stock were over 4 millions since 1992 except in 1993. The number of commercial chicks produced per breeding hen was around 100, which is far below to the suggested values of breeding companies. The number of hatching eggs produced per breeding hen were 168 eggs in US, 156~170 eggs in Thailand, and 160~170 eggs in China. Factors involved in the lowered performances of broiler parent stock in Korea appear to be 1) the poor isolation of breeding farms from commercial broiler farms, causing easy contamination with various diseases, 2) the failure to provide proper environment to the breeder, and 3) the failure to control body weight during laying periods.

• Korean Journal of Poultry Science
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• v.17 no.1
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• pp.33-44
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• 1990

This studies were conducted to investigate the difference of carcass characteristics between chicken broiler and duck broiler and the carcass characteristics of chicken broiler by sex, rearing type, season and feed and water deprivation with 240 chicken broilers and 20 duck broilers. The results obtained are summerized as follows. 1. The carcass yields were 65.43% in chicken broiler and 66.78% in duck broiler. The abdominal fat pad of chicken broiler was higher than that of duck broiler. 2. There were differences in commercial cuts production percentages between chicken broiler and duck broiler, and the commercial cut of chicken broiler was produced from drumsticks and thighs, breast back, wings and neck in order. 3. Although there was little difference in carcass yields between male and female of broiler, the abdominal fat pad of male broiler was lower than that of female broiler. 4. The carcass yields in cage and floor type were not different, but the abdominal fat pad in cage was slightly higher than that in floor. 5. There was no difference in carcass yields among Spring, Summer, Autumn and Winter, but the abdominal fat pad was highest in Summer and lowest in Winter. 6. As feed and water deprivation time increased by one hour, live weight was decreased by 0.28365% , and the carcass yield was highest after 6 hours depribated feed and water.