• Food Science of Animal Resources
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• v.22 no.2
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• pp.103-107
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• 2002

This study was carried out to investigate the quality of chukar partridge meat. Chukar partridges raised for 60 days were slaughtered and stored at 3$\^{C}$ for 24 hr. Broiler chicken(800g$\pm$20g carcass weight) after 24 hr postmortem were used as control, which obtained from local slaughter house. The chukar partridge meat had lower fat and cholesterol contents than broiler chicken did. The color of chukar partridge meat showed redder and darker than that of broiler chicken owing to lower L* and a* value. According to sensory evaluation, the flavor of chukar partridge meat was significantly better than that of broiler chicken. In conclusion, chukar partridge meat can be a preferable muscle food as well as a health food far consumer. Further, the development of cooking method must be improved meat quality characteristics in chukar partridge because the thigh of chukar partridge has tough texture and dark color.

• Proceedings of the SAREK Conference
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• 2004.11a
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• pp.58-58
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• 2004

• Journal of The Korean Society of Agricultural Engineers
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• v.60 no.2
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• pp.75-84
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• 2018

Thermal stress of livestock has been issued due to recent climate change trends and this causes reproductive disorders, decreased feed consumption, immunosuppression, and increased mortality of animals. Concept of THI has been widely used to quantitatively evaluate the degree of thermal stress for animals, however use of this concept is restricted for animals living in the enclosed facilities such as mechanically ventilated broiler houses. In this study, time-based internal energy flow and variation trends of temperature and humidity were analyzed based on BES technique. Local weather data, insulation characteristics of building materials, heat and moisture generation rate from broilers according to age, algorithm of ventilation operation were adopted for boundary condition of the model to accurately compute THI values inside the mechanically ventilated broiler house. From the BES computation, excess frequency of THI threshold in Jeju city was highest on the assumption that air conditioning equipments were not installed. When general raising density ($39kg\;m^{-2}$) was adopted, total 2,191 hours were exceeded. Excess hours of THI threshold were strongly related to the cumulative air temperature ($R^2=0.87$).

• Korean Journal of Poultry Science
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• v.28 no.1
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• pp.49-54
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• 2001

Two experiments were conducted to investigate the influence of dietary supplemental Enviro on noxious gas of environmental controlled poultry house and performance of broiler chicks. Diets contained 21.5, 19.00 CP and 3,100, 3,200 kcal/kg ME, respectively for starting and finishing period. Enviro were supplemented with 0, 0.2, 0.4, 0.6 and 0, 0.1, 0.2, 0.3% in Expt. 1 and 2, respectively. $CO_{2}$ and ammonia gas were periodically detected for finsihing period in Expt. 1. Weight gain, feed intake and feed conversion(FC) were measured for five weeks in Expt. 2. ND antibody titer were also measured after primary and booster vaccination at two and three weeks old. Blood cholesterol and nutrients digestibility were In Expt. 1, ammonia and $CO_{2}$ gas of chicks fed 0.2% Enviro showed 32.8ppm and 1,719ppm in poultry house and significantly decrease compared to that of control(P〈0.05). $CO_{2}$ gas was 1,814ppm in 0.4% Enviro treatments and also significantly lower than control(P〈0.05), but tended to be increased compared to that of 0.2% Enviro treatments, In Expt. 2, weight gain of chicks fed 0.1 and 0.2% Enviro was significantly increased for starting period(P〈0.05), but was not statistically different for finishing period. Feed intake was no significantly different of all treatments. Chicks showed lower FC in 0.3% Enviro treatment for starting period(P〈0.05) than others, but was not for finishing period. ND AB titer of chicks fed Enviro was prone to be higher than control, but was not significantly different. Total blood cholesterol was not significantly different of all treatments, but tended to be high in 0.1 and 0.2% Enviro treatments. HDL of chicks fed those levels showed significantly higher than control(P〈0.05), whereas LDL was tended to be decreased in those treatments. The digestibilites of crude protein and fiber were improved in 0.1 and 0.2% Enviro treatments relative to those of control, but was not statistically different. However, crude ash digestibility was significantly improved in 0.1 and 0.2% Enviro treatments(P〈0.05). Chicks also showed AMEn in 0.1, 0.2% Enviro treatments, but was no significance. The results of these experiments indicated that 0.1% Enviro supplement would be maximize the performance of broiler chicks.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.12 no.4
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• pp.373-379
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• 2019

In this study, image-based flock monitoring and density evaluation were conducted for broiler chicks welfare. Image data were captured by using a mono camera and region of broiler chicks in the image was detected using converting to HSV color model, thresholding, and clustering with filtering. The results show that region detection was performed with 5% relative error and 0.81 IoU on average. The detected region was corrected to the actual region by projection into ground using coordinate transformation between camera and real-world. The flock density of broiler chicks was estimated using the corrected actual region, and it was observed with an average of 80%. The developed algorithm can be applied to the broiler chicks house through enhancing accuracy of region detection and low-cost system configuration.

• Proceedings of the Korea Society of Poultry Science Conference
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• 2000.11a
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• pp.66-69
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• 2000

To investigate the influence of feeding Enviro on noxious gas of environmental controlled poultry house and performance of broiler chicks. Diets contained 21.5, 19.00 CP and 3,100, 3,200 kcal/kg ME, respectively for starting and finishing period. Enviro were supplemented with 0, 0.2, 0.4, 0.6 and 0, 0.1, 0.2, 0.3% in Expt 1and 2, respectively. CO$_2$and ammonia gas were periodically detected for finishing period in Expt 1. Weight gain, feed intake and feed conversion(FC) were measured for five weeks in Expt. 2. ND antibody titer were also measured after primary and booster vaccination at two and four weeks old. In Expt 1, chicks fed 0.2% Enviro showed 32.8ppm and 1719 ppm of ammonia gas, CO$_2$in poultry house and significantly decrease compared to that of control(P<0.05). Weight gain of chicks fed 0.1 and 0.2% Enviro was significantly increased for starting period(P<0.05) but was not statistically different for finishing period. Feed intake was no significantly different of all treatments. Chicks showed lower FC in 0.3% Enviro treatment for starting period(P<0.05) than others, but was not for finishing period. ND AB titet of chicks fed Enviro was prone to be higher than control, but was not significantly different. The results of these experiments indicated that 0.1% Enviro supplement would be maximize the performance of broiler chicks.

• Korean Journal of Poultry Science
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• v.33 no.1
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• pp.57-63
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• 2006

This study was conducted to investigate the effect of ventilating system of environmental controlled broiler house on broiler production. Three hundred eighty four broiler chicks (Hubbard, mean live weight of $44.5{\pm}2.0g/bird$) were reared for 2 wk. The results of the present study were summarized as follows : 1. Ammonia gas production was lower in the second and the third floors of cages compared with first floor of cages 13.5 and 13.5 vs 14.6 ppm, respectively). The observations of ammonia production in the morning and afternoon were similar. The production of carbon dioxide was not different between morning and afternoon, but it was tended to decrease in the forth floor of cages due to a fresh air 2. A wind velocity in the enclosed house was similar across lower, middle and upper section (0.57m/sec, 0.22m/sec and 0.04msec, respectively). In order to maintain an optimal air flow velocity in the cages, the duct entrance was punched, and then the air flow was full-round in the overall space in the cage. 3. Daily liveweight gain, feed intakes, and feed efficiency were not significant differences among treatments during whole experimental period (P>0.05). Therefore, the present results showed that temperature, moisture and atmosphere controlling were desirable, and air flew evenly in the cage.

• Journal of Animal Environmental Science
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• v.9 no.2
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• pp.103-112
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• 2003

In this study, the distributions of internal climates such as air temperature, humidity, dust, ammonia gas, and air velocity were systematically measured at a mechanically ventilated broiler houses during summer season, with local weather data. The analysis was focused on the suitability, stability, and uniformity of internal climate, resulting in serious stress on chickens and decrease of productivity In the mechanically ventilated broiler house, the difference between measured and recommended air temperatures(suitability) was 10.4C in maximum during the summer time. The difference of air temperature in the house between day and night was $8.7^{\circ}C$ in maximum. And maximal hourly range of internal air temperature at 0.4m height from the floor was $3.7^{\circ}C$ suggesting it maintained thermal uniformity in the broiler house. The $NH_3$ and dust concentrations were pretty low because ventilation was fully performed. The air speed at chicken location was measured 2.2m/s and 1.7m/s, respectively without and with chicken existence.

• Asian-Australasian Journal of Animal Sciences
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• v.29 no.7
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• pp.987-997
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• 2016

The objective of the study was to compare the carcass characteristics, meat quality, and blood parameters of slow and fast grown female broiler chickens fed in organic or conventional production system. The two genotypes tested were medium slow-growing chickens (SG, Hubbard Red JA) and commercial fast-growing chickens (FG, Ross 308). Both genotypes (each represented by 400 chickens) were divided into two sub-groups fed either organic (O) or conventional (C) systems. Chickens of each genotype and system were raised in a semi environmentally controlled poultry house until 21 d of age and were assigned to 5 pens of 40 chickens each. Then, O system chickens were transferred into an open-side poultry house with an outdoor run. At 81 d of age, 10 female chickens from each genotype and from each production system (n = 40) were randomly chosen to provide material for analysis, and were weighed and brought to the slaughterhouse to assess carcass characteristics and meat quality. The blood parameters were determined by using 5 female chickens from each genotype and from each production system (n = 20). FG had the higher live weight, along with carcass, breast, and thigh-drumstick weights compared to SG (p<0.05). FG had the higher breast yield, whereas SG had the higher thigh-drumstick yield (p<0.05). The O system resulted in a higher amount of abdominal fat (p<0.05). In addition, the O system values were higher for dry matter, crude ash, crude protein, and $pH^{15}$ values in breast meat, and for crude ash, crude protein, and $pH^{15}$ values in drumstick meat (p<0.05). In addition, total saturated fatty acids, total mono-unsaturated fatty acids, and total omega 3 were significantly higher in the O system than in the C system. Thus, the O system showed a positive advantage compared to the C system regarding female chicken meat quality, primarily within the ash, protein, and total omega 3 fatty acid profiles. In conclusion, the present study indicated that the main factor affecting the carcass characteristics of female chickens was genotype, whereas the organic system contributed to enhanced meat quality. These findings provide a better understanding of the relative roles of genotype and production systems in female broiler characteristics, and might aid producers in designing their facilities to optimize yield and quality while maintaining acceptable animal welfare standards.

• Korean Journal of Poultry Science
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• v.24 no.2
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• pp.59-66
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• 1997

Optimum drying conditions to utilize porcine blood from slaughter house for blood meals, and the effects of blood meals on growth in broiler chicks were investigated. Moisture and protein con-tents of slaughter porcine blood were 79.8 and 16.4%, respectively. The protein contents of the flash dried blood meals at 80˚C were not different from those of the spray dried blood meals at 160 and 190˚C, but higher by 17% relative to those of the spray dried blood meals at 80 and 120˚C. Results from protein analysis by SDS-polyacrylamide electrophoresis showed that flash dried blood meals at 80˚C and spray dried blood meals at 160˚C were better than spray dried blood meals at 80, 120 and 190˚C in terms of protein quality. In Feeding Trial I with broiler chicks, body weights of chicks fed 2, 4 and 6% flash dried blood meal diets at 80˚C were increased at 35 days by 5.6, 7.9 and 4.0%, respectively, compared to control group(P<0.05). In Feeding Trial II, body weights of chicks fed 4 and 6% flash dried blood meal diets at 80˚C were increased at 42 days by 4.9 and 5.3%, respectively, compared to control group(P<0.05). Feed conversion ratios of chicks fed diets 4 and 6% flash dried blood meal diets at 80˚C were significantly improved at 42 days by 7.0 and 3.7%, respectively, compared to that of control group(P<0.05). The optimum drying condition of slaughter porcine blood seemed to be the flash drying method at 80˚C