딱정벌레목(Coleoptera) 거저리과(Tenebrionidae)에 속하는 외미거저리(Alphitobius diaperinus (Panzer))는 저장곡물해충의 하나로 알 려져 있지만, 대부분 이미 피해를 받은 곡물을 섭식하기 때문에 경제적으로 심각한 위협을 초래할 정도는 아니다. 그러나 이 외미거저리 해충은 많은 나라의 가금산업에서 매우 중요한 해충으로 간주되고 있다. 우리나라의 육계농장에서도 외미거저리가 발생하여 문제를 야기하고 있음이 확 인되었고, 이 해충의 발생으로 야기되는 문제로는 육계농장의 보온효과 및 병아리의 전반적인 활력을 떨어뜨리고, 병원균을 전염시킴으로써 가 금업자에게 상당한 경제적 손실을 가져다주고 있다. 한편, 육계농장에서 이 외미거저리 개체군을 한 가지 방법으로 완전히 제거하기가 쉽지 않기 때문에 적절한 방제방법을 개발하기 위한 노력이 절실하다.

While the darkling beetle, Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae) is considered a pest of stored products, it does not pose a significant economic threat to this industry. The grains these beetles feed on are often already damaged. However, the beetle is considered the foremost premise pest in the poultry industry in many countries of the world. Recently, the darking beetle has also infested in broiler chicken houses of Korea. The problems caused by this pest are destroying their insulative capability, lowering chick’s overall performance and transmitting pathogenic organisms, and have been substantial economic losses to poultry producers. Therefore, we surveyed the status of infestation and damage of this pest in broiler chicken houses. Because there is no simple one step process that will completely eliminate darkling beetle populations from broiler facilities, we would like to outline further studies on the proper control measures.

This experiment was conducted to investigate the effect of dietary supplementation of the Black Soldier Fly(BSF) larvae on growth performance, carcass rate, and fatty acid profile of chicken meat in broiler chicks. Four hundred eighty 1-d-old broilers(Ross 308) were distributed into 3 treatments with 4 pens at 30 birds per replicate. Treatments were corn-soybean meal based broiler diet (control) and the basal diet replaced with BSF at the level of 3 and 6% respectively. Viability was not different significantly. Body weight gain was higher in control than other treatments. Feed intake was not statistically different of treatments. Feed conversion ratio was lower in ontrol than other treatments. Relative weight of breast meat was significantly increased in all treated groups than in control. But, another relative weights of chicken meat cuts (thigh, wing, neck, back) were not significantly different among the groups. In conclusion, it could be suggested that dietary supplementation of Black Soldier Fly larvae could beneficially improved the performance on broiler

The objective of this study was to determine the effect of dietary oils on the levels of the γ-linolenic acid in chicken meat lipids. Three hundred ten five, 1-d old, male, Ross strain, broiler chicks were fed for 35 d to compare diets containing evening primrose oil(EPO) and hemp seed oil(HO) to a control diet. Fatty acid composition of lipid from chicken skin, thigh and breast muscle were determined at the end of the trial. The level of γ-linolenic acid of lipids from chicken meat fed diets containing EPO or HO was significantly higher than that of the control group(p〈0.05). The level of γ-linolenic acid of lipids from chicken skin was highest in the group, which had been fed the EPO 0.85%, followed in order by EPO 0.7%, 0.5%, EPO mixed oil, HO and HO mixed oil. There was a significant difference in the level of γ-linolenic acid of chicken skin between the control and treatment groups(p〈0.05). The level of γ-linolenic acid of lipids from chicken thigh muscle was also similar to skin, and significantly higher than that of the control group(p〈0.05). The level of γ-linolenic acid of lipids from chicken breast muscle was highest in the group, which had been fed the EPO 0.5%, followed in order by EPO 0.7%, 0.85%, HO 0.5% and HO mixed oil. There was a significant difference in the level of γ-linolenic acid of chicken breast muscle between the control and treatment groups(p〈0.05).

The purpose of this study was to evaluate the mortality rate, weight gain, and protein, lipid cholesterol, and total amino acid contents in processed-sulfur-diet chicken meat. Also investigated were the antioxidant activity and glutathione content of blood plasma. The mortality of the processed-sulfur-diet chickens was relatively reduced, and their weight increased compared to the normal-diet chickens. Although the glutathione content decreased in the processed-sulfur-diet chicken blood plasma, the antioxidant activity increased compared with the normal-diet chickens. Also, there was no difference in the total cholesterol contents of the blood, but the level of HDL cholesterol increased while that of LDL cholesterol decreased. Furthermore, there were no changes in the total amino acid and protein contents, but the fat content was significantly reduced. As no toxicity was found in the DT 40 cells in the MTT assay, it can be concluded that dietary sulfur in chicken feed can improve the quality of poultry products.

The characteristics of the components related to the meat taste of the commercial broiler (CB) and the Korean native chicken (KNC) were compared. The breast meat from CB showed higher amounts of C16:1 and C18:2 but lower amounts of C16:0 and C22:6. The thigh meat from CB showed a higher amount of C18:1 but lower amounts of C16:0, C18:0, C20:4, and C22:6. The flavor- and taste-contributing amino acids, including aspartic acid, threonine, serine, glycine, alanine, tyrosine, lysine, histidine, and arginine, were significantly higher in the KNC breast meat, but the level of amino acids in the thigh meat were not different between the two breeds. The measurement of the volatile compounds revealed that CB contains much higher volatile compounds compared to KNC in their fresh breast and thigh meat. Both in the breast and thigh meat, however, the amount of flavor compounds increased significantly after cooking; as such, KNC turned out to have more flavor compounds than CB.

당귀(當歸)와 시호근부(柴胡根部) 혼합분말을 육계사료(肉鷄飼料)에 0. 0, 0. 4, 1. 0, 2. 0%씩 첨가하여 6주간 급여한 결과는 다음과 같다. 당귀와 시호근부 첨가구의 사료섭취량(飼料攝取量)이 대조구보다 많았음을 볼때 기호성(嗜好性)은 좋게 평가되었다. 증체량(增體量)은 혼합제 1. 0% 첨가구에서 1,752g으로 대조구 보다 수당(首當) 130g 이상 높았다. 사료요구율(飼料要求率)은 1. 0% 첨가구에서 1. 85로서 대조구의 1. 99보다 유의하게 높았다(P < 0. 05) 도체량(屠體量)은 1. 0% 첨가구(1,261g)에서 높았으나 도체율은 0. 4% 첨가구에서 69. 48%로 높았다. 가슴살고기량은 0. 4% 첨가구에서 233g으로 대조구보다도 20g이상 더 높았다. 다리고기는 0. 4% 첨가구에서 대조구의 353g보다 50g이상 높았다. 당귀와 시호근부 첨가수준이 높아질 수록 간장(肝臟)의 중량이 무거워지는 경향이 있으며 비장(脾臟)과 심장(心臟) 및 근위(筋胃)의 중량과 복강과 근위주위 축적지방량(蓄積脂肪量)은 0. 4% 복합첨가구에서 높았다. 혈청(血淸) 총단백질(總蛋白質)과 혈청 총 콜레스테롤 및 트리글리세라이드 농도는 2. 0% 복합첨가구에서 높았으며 증체중이 높은 1. 0% 복합첨가구에서는 헐청 단백질과 콜레스테롤 및 트리글리세 라이드 농도가 낮은 경향으로 나타났다.