Effects of Dietary Fish Oil, Vitamin E and C Supplementation on DHA Deposition and Shelf-Life in Broiler Chickens

Abstract

This study was compared the effect of shelf-life and DHA accumulation in chicken meat from broilers fed experimental diets for two weeks(21～35 days) of growers. Two hundred-ten male Ross broilers, 1 day of age, were randomly allocated to seven treatment groups. Experimental diets were assigned to each of the seven groups: control diet containing tallow, T1 with 1.00% fish oil, T2 with 2.00% fish oil, T3 with 2.00% fish oil, 200 ppm vitamin E and 200 ppm vitamin C, T4 with 2.00% fish oil and 200 ppm vitamin C, T5 with 2.00% fish oil and 200 ppm vitamin E, and T6 with 3.00% fish oil. The levels of DHA in chicken meat was the highest in T6, and T1 in breast muscle and thigh muscle with skin was higher than that of T2∼T5, T2∼T5 in raw chicken meat and wing with skin was about two-fold higher than that of T1. The contents of DHA in chicken meat according to storage days were significantly reduced to 42.30%, 49.38% and 48.51% in T1, T2 and T6, respectively, and this decrease was higher than that of T3, T4 and T5 (p<0.05). Particularly, the rate of reduction of DHA was the lowest in the T3 and T5, which were the lowest in TBARS(thiobarbituric acid reactive substances). TBARS increased in the order of T6, T2 and T1, but reduced in the order of T3, T5 and T4 according to storage days, and there was a significant difference among the treatment groups (p<0.05).

Effects of Dietary Supplementation of Vitamin C and Sea Buckthorn on the Performance and Meat Quality in Old Laying Hens

“…또한 비타민 C (ascorbic acid) 역시 가금에서 스트레스 저감을 위한 필수적 인 영양소로서, 첨가 수준에 따라서 닭고기의 항산화제 또 는 산화 전구 물질로서 작용할 수 있기 때문에 산업에서 혹 서기에 스트레스 저감 물질로 많이 활용되고 있으며 (Whitehead and Keller, 2003;Pardue and Thaxton, 1986;Kang et al, 2007), Kang et al(2007) (Table 1). 처리구로는 비타민 C와 비타민 나무 부산물을 첨가하지 않은 대조구(Basal), 0.1% Vit C(basal + 0.1% vitamin C), 0.1% SB(basal + 0.1% Sea buckthorn), 0.5% SB(basal + 0.5% Sea buckthorn), 1.0% SB(basal + 1.0% Sea buckthorn) 총 5처리였다.…”