• Journal of Animal Science and Technology
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• 제62권2호
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• pp.187-197
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• 2020

The present study was conducted to evaluate the effects of black soldier fly larvae oil (BSFLO) from the black soldier fly larvae (BSFL) as a partial or total replacement of soybean oil (SBO) on growth performance, fatty acid (FA) profile, and meat quality of broiler chickens from 1 to 5 wk of age. A total of 210 male broiler chickens (Ross 308) at one-day of age were randomly allotted to 3 dietary treatments (10 replicates and 7 birds/group): a basal control diet (CON), the basal diet in which the SBO was replaced by 50% (50 BSFLO) or 100% (100 BSFLO) of BSFLO. The growth performance, physical measurements and chemical traits of leg meat, and sensory analysis of breast meat were not influenced by diets. However, the relative weight (g/kg) of gizzard of CON was significantly higher (14.85, 12.52, and 13.02 for CON, 50 BSFLO, and 100 BSFLO; p < 0.05) than that of other treatments. As expected, the FA profile of breast meat was affected by BSFLO inclusion. The proportion (%) of saturated fatty acid (SFA) was increased (27.16, 27.58, and 28.72 for CON, 50 BSFLO, and 100 BSFLO; p < 0.05) by BSFLO inclusion and the percentage (%) of MUFA was also increased (43.36, 44.58, and 48.55 for CON, 50 BSFLO, and 100 BSFLO; p < 0.01). On the contrary, the proportion (%) of PUFA was decreased (29.49, 27.84, and 22.74 for CON, 50 BSFLO, and 100 BSFLO; p < 0.01). In conclusion, the present study suggests that the replacement of BSFLO did not show an adverse effect on growth performance and it could be an ingredient as a dietary fat source for a broiler diet.

• 한국가금학회지
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• 제23권2호
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• pp.71-76
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• 1996

The present study was conducted to investigate the effects of dietary Eucommia ulmoides Oliver leaves(EUOL) on the growth performance and meat quality of broiler chicks. The dietary treatments consisted of the control diet(corn-soybean meal basal), and EUOL 2, 4, and 6% diets. The latter three diets were prepared by adding 2, 4, and 6% EUOL to the control diet. Ninety-six Arbor Acre male broiler chicks were randomly allotted to 16 pens; four pens per treatment and 6 birds per pen. The growth performance and carcass weight of broiler chicks fed EUOL diets were not significantly different(P>O.05) from the control birds. Also, the muscle color degrees(L*a*b *)in brolier chicks were similar to each other. The blood concentrations of protein, sugar and glutamic-pyruvic transarninase(GPT) were not different(P>O.05) between control and treatment groups. The blood total cholestrol content was significantly(P<0.05) decreased by the addition of EUOL. However, the addition of EUOL did not change the muscle components significantly. The bone hardness of broiler chicks fed EUOL was significantly(P<0.05) higher than that of control chicks.

• 한국축산식품학회지
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• 제34권5호
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• pp.622-629
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• 2014

The present study was conducted to compare the growth performance, carcass characteristics, and meat quality of the egg-type male growing chicken (EM), white-mini broiler (WB), and commercial broiler (Ross 308, CB). A total of 360 1-d-old chicks were reared together using a completely randomized design with 4 replicates for each group under the identical feeding and rearing conditions. The ADG and gain:feed were the highest in CB, intermediate in WB, and the lowest in EM (p<0.05), and the live and carcass weights of CB and EM were significantly higher than those of WB (p<0.05). The pH of breast meat from WB and CB was significantly higher (p<0.05) than that from EM with a similar body weight. The EM had the lowest moisture (p<0.05) and the highest protein content (p<0.05), whereas the fat and ash contents were not different among groups. The mystiric acid (C14:0), palmitoleic acid (C16:1 ${\omega}7$), and oleic acid (C18:1 ${\omega}9$) levels were significantly higher in breast meat from CB (p<0.05). The monounsaturated fatty acid (MUFA) content showed the highest (p<0.05) levels in CB. In contrast, the polyunsaturated fatty acid (PUFA) contents of breast meat, including linoleic acid (C18:2 ${\omega}6$) and arachidonic acid (C20:4 ${\omega}6$), were higher (p<0.05) in EM and WB than in CB. In conclusion, the EM and WB had less growth performances in comparison with CB, but they each had some unique features (taste, flavor, and physiological characteristics) when raised under the identical rearing and feeding conditions.

• Journal of Animal Science and Technology
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• 제50권1호
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• pp.57-68
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• 2008

본 연구는 잣 부산물의 급여가 육계의 생산성, 혈청 콜레스테롤, 도체특성 및 육의 지방산과 콜레스테롤 함량에 미치는 영향을 알아보기 위하여 시험을 실시하였다. 사양시험은 2일령 Arbor Acre Broiler(♂) 480수를 공시하였으며, 5주간 사양시험을 실시하였다. 시험설계는 1) CS(미루나무톱밥 1%), 2) PCM0.5(잣 부산물 0.5%+미루나무톱밥 0.5%) 및 3) PCM1.0(잣 부산물 1%)로 3개 처리를 하여 처리당 8반복, 반복당 20수씩 완전임의 배치하였다. 전체 시험 기간 동안 생산성은 처리구간에 유의적인 차이가 없었으며(P>0.05), 또한, 혈청 콜레스테롤 및 도체비율도 처리구간에 유의적인 차이가 없었다(P>0.05). 다리살과 가슴살의 TBARS는 PCM1.0처리구가 CS처리구와 비교하여 유의적으로 높았다(P<0.05). 다리살의 arachidate는 PCM0.5 처리구가 PCM1.0 처리구와 비교하여 유의적으로 높게 나타났으며, linolenate는 PCM1.0 처리구가 다른 처리구와 비교하여 가장 낮게 나타났다(P<0.05). 다리살, 가슴살 및 복강지방의 콜레스테롤 함량은 처리구간에 유의적인 차이가 없었다(P>0.05). 결론적으로 본 시험의 결과 육계에 잣 부산물의 급여는 TBARS에 영향을 미치는 것으로 사료된다.

• Asian-Australasian Journal of Animal Sciences
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• 제23권12호
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• pp.1614-1625
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• 2010

Two experiments were conducted to evaluate the use of fish silage prepared from Indian oil sardines, Sardinella longiceps, as partial replacement of soybean meal as a sole source of protein for growing broiler chickens. The main objective of Experiment 1, an ileal digestibility assay, was to assess the nutritional value of fish silage compared with soybean meal for feeding broiler chickens. The two test ingredients, soybean meal and dried fish silage, were incorporated into semi-synthetic diets, as the only component containing protein. The ileal digestibility coefficients of amino acids of fish silage were considerably higher than those of soybean meal (p<0.001). The lower digestibility of amino acids from soybean meal was related to the presence of anti-nutritional factors such as trypsin inhibitors. Fish silage had higher levels of sulphur-containing amino acids than soybean meal. The objective of Experiment 2, a growth study, was to evaluate the effect of feeding fish silage on performance and meat quality characteristics of broiler chickens raised under closed and open-sided housing systems. Four diets containing various levels of fish silage (0, 10, 20 and 30%) were evaluated. Daily feed intake, body weight gain and feed conversion ratio were measured. At the end of Experiment 2, 96 birds were randomly selected and slaughtered to evaluate meat quality characteristics. Housing type had significant effects on feed intake and body weight gain (p<0.01). Birds in the open-sided house consumed 4.7% less amount of feed and gained 10.6% less than their counterparts in a closed house. Birds in both houses fed diets containing 10 and 20% fish silage gained more than birds fed 30% fish silage. The current study produced evidence that fish silage can replace up to 20% of soybean meal in broiler diets without affecting either growth performance or the sensory quality of broiler meat.

• Animal Bioscience
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• 제34권11호
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• pp.1839-1848
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• 2021

Objective: The objective of the present study was to investigate the comparative effects of dietary functional nutrients including glutamine (Gln), chromium picolinate (Cr picolinate), vitamin C (Vit C), betaine (Bet), and taurine (Tau) on growth performance, meat quality, immune responses, and stress biomarkers in broiler chickens raised under heat stress conditions. Methods: A total of 420 21-d-old Ross 308 male broiler chickens (initial body weight = 866±61.9 g) were randomly allotted to 1 of 7 treatment groups with 6 replicates. One group was kept under thermoneutral conditions and was fed a basal diet (PC, positive control). Other 6 groups were exposed to a cyclic heat stress condition. One of the 6 groups was fed the basal diet (NC, negative control), whereas 5 other groups were fed the basal diet supplemented with 0.5% Gln, 500 ppb Cr picolinate, 250 mg/kg Vit C, 0.2% Bet, or 1.0% Tau. The diets and water were provided ad libitum for 21 d. Results: Broiler chickens in NC group had decreased (p<0.05) growth performance and immune responses measured based on cutaneous basophil hypersensitivity (CBH), but increased (p<0.05) stress responses measured based on feather corticosterone concentrations and blood heterophil:lymphocyte than those in PC group. However, none of dietary functional nutrients had a positive effect on growth performance of broiler chickens. Dietary supplementation of 250 mg/kg Vit C improved (p<0.05) CBH responses of broiler chickens, but other functional nutrients had no such an improvement in CBH responses. All functional nutrients decreased (p<0.05) stress responses of broiler chickens. Conclusion: Functional nutrients including Gln, Cr picolinate, Vit C, Bet, and Tau at the supplemental levels used in this study decrease stress responses of broiler chickens to a relatively similar extent. However, this reduction in stress responses could not fully ameliorate decreased productive performance of broiler chickens raised under the current heat stress conditions.

• 한국가금학회:학술대회논문집
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• 한국가금학회 2001년도 제18차 정기총회 및 학술발표 PROCEEDINGS
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• pp.83-85
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• 2001

남은 음식물을 수분 ·탈취 ·건조하여 0%, 25%, 50% 및 75% 대체한 펠렛사료를 육성오리에 5주 동안 급여한 결과 시험종료 체중이 남은 음식물 25%와 50% 첨가에서 유의적인(p<0.05) 증가를 나타냈다. 일당증체량은 남은 음식물 25%가 다른 처리구보다 유의적(p<0.05)으로 증가함을 나타낸 반면에 75%은 유의적인(p<0.05) 감소함을 나타냈다. 사료섭취량은 남은 음식물을 첨가함에 따라 다소 증가하였으나 유의적인 차이는 없었다. 사료효율은 남은 음식물 25%가 가장 좋은 반면에 75%가 가장 나쁘게 나타났다. 도체중은 75%구가 유의적(P<0.05)으로 감소하였다. 수분함량은 남은 음식물 25%와 50%구는 대조구와 별다른 차이가 없었으나 75%구가 유의적(P<0.05)으로 높았다. 지방과 단백질함량은 남은 음식물의 대체수준의 증가에 따라 유의적(P<0.05)으로 감소함을 나타냈다. 육의 pH은 남은 음식물 대체수준의 증가에 따라 증가하는 경향이였으며, 75%구에서 유의적인 차이를 나타냈다. 육색의 명도와 적색도는 남은 음식물의 대체수준의 증가에 따라 감소하는 경향이였다. 콜레스테롤 함량은 남은 음식물 25%, 50% 및 70%구에 유의적(P<0.05)으로 감소하였다. 관능평가에서는 냄새와 외판이 남은 음식물 대체 급여에 의해 약간 떨어지는 경향이였으나 맛에 있어서는 다소 증가하는 경향을 나타냈다. 따라서 남은 음식물을 이용한 토리 펠렛사료에 있어 50% 까지 대체 이용 가능성을 시사해주고 있다.

• 한국식품영양과학회지
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• 제44권11호
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• pp.1693-1699
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• 2015

본 연구에서는 국내에서 유통되는 각기 다른 브랜드 6종의 닭 가슴살 제품에 대해 이화학 검사, 조직감 검사 및 관능평가를 통하여 품질 비교 평가를 수행하였다. 평가 결과 일반 성분에서는 큰 차이가 없었으나, pH, 색상, 조리손실률에서 제품 간 큰 편차가 나타났다. 특히 연도 측정에서는 연도가 높은 제품군(A, B, C, D)과 연도가 낮은 제품군(E, F)으로 구분이 되어 제품의 숙성기간 또는 제품군별 냉동 방식에 따라 연도가 영향을 받음을 알 수 있었다. 묘사분석 결과 저작경도와 저작응집성에서 제품 간 유의적인 차이가 나타났고 두 특성 모두 F 제품에서 가장 높은 강도를 보였다. 소비자 기호도 조사 결과 연도 및 수분감이 가장 낮은 제품에서 기호도가 가장 낮게 나타나 연도 특성이 닭 가슴살의 품질을 결정하는 가장 중요한 지표 중 하나라는 것이 밝혀졌다. 본 연구에 사용된 닭 가슴살 제품은 제품별 사육부터 가공, 유통과정에 있어서 여러 가지 다양한 변수가 존재하고 이에 대한 정보가 공개되지 않았으므로 제품 품질 차이에 영향을 주는 인자들을 정확하게 독립적으로 구분하기는 불가능하나 현재 국내에 시판 유통되는 닭 가슴살 제품의 품질 간 큰 차이가 존재하고 소비자들의 기호도에 영향을 미치는 요인들을 밝혀냄으로써 국내 가금육 제조업체들이 소비자들의 기호도가 최적화된 닭 가슴살 제품을 생산 및 관리하는 데 본 연구 결과를 유용하게 사용할 수 있을 것으로 판단된다.

• Asian-Australasian Journal of Animal Sciences
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• 제30권1호
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• pp.71-77
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• 2017

Objective: This experiment was conducted to investigate the effects of dietary supplementation with marigold extract on growth performance, pigmentation, antioxidant capacity and meat quality in broiler chickens. Methods: A total of 320 one-day-old Arbor Acres chickens were randomly divided into 5 groups with 8 replicates of 8 chickens each. The chickens of control group were fed with basal diet and other experimental groups were fed with basal diet supplemented with 0.075%, 0.15%, 0.30%, and 0.60% marigold extract respectively (the corresponding concentrations of lutein were 15, 30, 60, and 120 mg/kg). Results: The results showed that marigold extract supplementation increased the yellowness values of shank, beak, skin and muscle and the redness ($a^*$) value of thigh muscle (linear, p<0.01). Marigold extract supplementation significantly increased the total antioxidant capacity, and the activities of superoxide dismutase in liver and thigh muscle (linear, p<0.01) and significantly decreased the malondialdehyde contents of liver and thigh muscle (linear, p<0.01). Marigold extract supplementation significantly decreased the drip loss and shear force of thigh muscles (linear, p<0.01). There was no significant effect on growth performance with marigold extract supplementation. Conclusion: In conclusion, dietary supplementation of marigold extract significantly increased the yellowness values of carcass, antioxidant capacity and meat quality in broiler chickens.

• Animal Bioscience
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• 제37권7호
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• pp.1225-1235
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• 2024

Objective: The objective of the study was to determine the effects of feeding fermented cassava leaf meal (FCLM) on growth performance, carcass characteristics and meat sensory evaluation of broiler chickens. Methods: A total of 160 Cobb-500 chickens were used during the phases of growing (21 days of age; initial weight 0.39±0.025 kg/bird) and finishing (35 days of age; initial weight 1.023±0.164 kg/bird). The whole experiment lasted for four weeks. The FCLM was included in starter and finishing diets at 0, 50, 100, and 150 g/kg inclusion levels. Total feed intake (TFI), weight gain (WG), feed conversion ratio, and nutrient digestibility were recorded. Sensory evaluation of breast meat was used to determine the eating quality of the meat prepared using roasting and boiling methods. Results: The TFI and WG decreased (p<0.05) with increasing inclusion levels of FCLM in the diets of growing chickens. Crude protein digestibility for chickens fed 0 and 50 g/kg FCLM was higher (p<0.05) than for chickens subjected to a diet with 150 g/kg FCLM. During the finishing phase, TFI increased linearly (p<0.05) with increasing inclusion level of FCLM in chicken diets, while WG decreased (p<0.05) with inclusion level of FCLM. Treatment diets had no effect (p>0.05) on the eating qualities of breast meat. However, juiciness was significant (p<0.05) for the cooking method and treatment interaction. At 50 g/kg inclusion level, boiled meat had a higher (p<0.05) juiciness score than roasted meat. Tenderness, on the other hand, was significant (p<0.05) for the interaction of gender and treatment. Females considered the boiled meat to be more tender than the males at 150 g/kg inclusion level. Using principal component analysis, a positive correlation was observed between teeth adhesion and fibrousness, flavour and juiciness, and springiness and tenderness. Conclusion: From the study, it can be concluded that FCLM can be used as an ingredient in the diets of broiler chickens. Inclusion level of 50 g/kg can be used in chicken diets during the growing phase, whereas in the finishing phase, inclusion level of 150 g/kg FCLM can be used. The FCLM did not affect the eating quality of breast meat.