지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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The present study determined the effect of dietary cultivated microalgae (Parachlorella sp.) on the growth and immune responses of pre-starter broilers. A total of 320 one-day-old birds (Ross 308) were allocated to 4 treatments with 8 blocks in a randomized complete block design. The four experimental diets consisted of a corn-soybean meal-based control diet, and three diets contained 0.5%, 1.0%, and 1.5% microalgae powder at the expense of cornstarch in the control diet. After feeding the experimental diets for 7 days, the body weight and feed intake of all birds were measured, and 8 birds were randomly selected from each treatment. Peripheral blood mononuclear cells (PBMCs) and serum were harvested for immune profile assessment, including cytokines and cell migration receptors. No differences in growth performance were observed among the treatments. The birds that were fed diets containing graded levels of microalga showed a linear increase in the mRNA expression of cytokine genes in PBMCs, including that of IL2, IL1β, and IL18 (P＜0.05). With respect to the chemokine receptor genes in PBMCs, mRNA expression of CCR2, CCR9, and ITGA4 changed quadratically (P＜0.05), but that of CCR7 increased linearly (P＜0.01). Cytokine protein secretion in blood, including that of IL-1β and IL-6, increased linearly (P＜0.01) with an increase in the microalgal content. Overall, the present results show that the indigenous microalgae powder used in this study could stimulate immunity with no detrimental effects on the growth performance of pre-starter broiler chickens.
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UCI(KEPA) : I410-ECN-0101-2020-527-000509773