• Asian-Australasian Journal of Animal Sciences
• /
• v.27 no.3
• /
• pp.398-405
• /
• 2014

This study was conducted to compare growth performance, carcass characteristics and meat quality of 4 breeds of local chicken. A total of 480 1-d-old chicks were distributed to 16 pens, with 4 treatments of breed, 4 replicates and 30 chicks per pen. Three Korean local breeds of white-mini broiler, Hanhyup-3-ho, and Woorimatdag, and a breed of silky fowl were raised under identical rearing and feeding conditions for 31-d, 37-d, 36-d, and 59-d, respectively. The BW and feed consumption on a pen basis were weekly measured for all pens, and ADFI, ADG and gain:feed were calculated for each pen. The ADFI and ADG of 3 breeds of Korean local chicken were greater than those of silky fowl (p<0.05). Within the Korean local breeds, ADFI of white-mini broiler was the highest (p<0.05), and ADG of Hanhyup-3-ho and white-mini broiler was the highest (p<0.05). Gain:feed of silky fowl was less than that of the 3 breeds of Korean local chicken. The carcass and breast yield of white-mini broiler were the greater than those of other breeds (p<0.05). The breast meat color (CIE $L^*$, $a^*$, and $b^*$) of 3 breeds of Korean local chicken were higher than that of silky fowl (p<0.05). The breast meat of Hanhyup-3-ho had greater cooking loss (p<0.05), whereas water holding capacity and pH were less than those of other breeds (p<0.05). The color score of 3 breeds of Korean local chicken was higher than that of silky fowl (p<0.05). Woorimatdag had a higher score on tenderness (p<0.05), whereas flavor score was less than that of other breeds (p<0.05). In conclusion, 4 local breeds of chicken have some unique features and seem to have more advantages, and this information can help consumers who prefer healthy and premium chicken meat.

• Journal of Environmental Science International
• /
• v.24 no.3
• /
• pp.323-328
• /
• 2015

This study aimed to investigate the effects of dietary supplementation of mixed probiotics on growth performance and fatty acid profiles of Korean native chicken and to provide information regarding producers. Ninety six Korean native chicken (48 males and 48 females, Hanhyup-3-ho) were allocated to 16 wire cages with 4 treatments, 4 replicates and 6 chicks (3 males and 3 females) per wire cage and fed one of four diets containing 0, 0.5, 1 and 1.5% mixed probiotics for 6 weeks. There were no differences among treatments in growth performance of Korean native chicken. For fatty acid profiles, no statistically differences in each fatty acid, total saturated fatty acid and unsaturated fatty acids were observed in all treatments. In the present study, irrespective of statistically differences, inclusion of mixed probiotics tended to improve growth performance, reduce saturated fatty acid and increase unsaturated fatty acids in breast muscles from Korean native chicken compared to controls.

• Asian-Australasian Journal of Animal Sciences
• /
• v.33 no.1
• /
• pp.139-147
• /
• 2020

Objective: The aim of this study was to compare the quality characteristics of retorted Samgyetang (Korean ginseng chicken soup) made from white semi-broilers (WSB; Ross×Hyline white, 3 weeks old), commercial broilers (CB; Ross, 4 weeks old), Korean native chickens (KNC; Hanhyup-3-ho, 12 weeks old) and old laying hens (OLH; Hyline white, 72 weeks old) and to explore the possibility of using the carcasses of KNCs and OLHs as raw material for product diversification. Methods: Raw and cooked meat quality, fatty acid composition and consumer acceptance were analyzed. Results: Among the chicken breeds, OLH and KNC showed a higher shear force value than WSB and CB due to high insoluble collagen contents. However, the meat of KNC was more tender than that of OLH. The meat of OLH was characterized by the lowest moisture content and highest crude fat content. The meat of KNC was characterized by a higher proportion of saturated fatty acids, α-linolenic acid and arachidonic acid than that of OLH. The meat of OLH showed the highest content of unsaturated fatty acid, particularly linoleic acid, in its thigh meat. Electronic nose readings revealed that the meat aroma pattern was clearly different across breeds. OLH had the lowest overall acceptance score, while no differences were found in flavor, texture, juiciness and appearance among WSB, CB, and KNC. Conclusion: KNC shows potential as raw material for Samgyetang, while additional preprocessing methods, such as tenderization and fat removal, are required for the utilization of OLH as raw material for retorted Samgyetang.

• Journal of Environmental Science International
• /
• v.31 no.5
• /
• pp.457-460
• /
• 2022

This study was conducted to investigate the effects of dietary supplementation with Ptecticus tenebrifer powder on the mortality and meat quality of Korean native chickens. A total of 40,000 Korean native chickens (1 day old, Hanhyup No. 3) were allocated to two dietary treatments (20,000 chickens in each treatment), which were fed the following: basal diet (control) and 1% of Ptecticus tenebrifer powder (T1). Feeding trials were conducted for 12 weeks, and mortality was measured weekly. At the end of the experimental period, 16 chickens (8 chickens in each treatment) were selected and slaughtered to obtain breast meat. The items used to analyze meat quality were pH, TBARS, and meat color. The weekly mortality rate was decreased by around 2 to 3 times in the T1 treatment group compared with the control group. The pH, TBARS, L^*, and b^* values of Korean native chicken breast were not affected by Ptecticus tenebrifer powder supplementation (p>0.05); however, a^* values showed statistical significance (p<0.05). In conclusion, the addition of 1% Ptecticus tenebrifer powder reduced mortality rate and demonstrated its potential in livestock environmental management.

• Korean Journal of Poultry Science
• /
• v.37 no.4
• /
• pp.355-360
• /
• 2010

To estimate the genetic characteristics within two brands of Korean native commercial chicken, we used a total of 302 genomic DNAs from two groups (Woorichicken: 152, Hanhyup3chicken: 150). Sizes of 10 microsatellite markers were decided using GeneMapper Software (v.4.0) after analyzing ABI 3130. Genetic diversity indices including expected heterozygosity (Ex H), observed heterozygosity (Ob H) and polymorphism information content (PIC). Frequencies of microsatellites markers were used to estimate heterozygosities and genetic distances. LEI0073 showed the highest value in all genetic diversity (Ex H, Ob H and PIC). On the other hand, MCW322 showed the lowest value in all genetic diversity. The calculated genetic distance of the two brand groups is 0.199 (standard genetic distance) and 0.132 (DA distance). Genetic distances of the two groups were relatively close to each other. Each individual is ramified to two brand groups in phylogenetic dendrogram.