Effect of Dietary Organic Acid Mixture on Growth Performance, Organ Weight, Blood Immunological Parameter and Intestinal Villi Morphology in Broilers

Abstract

The study was conducted to evaluate the effects of dietary organic acid mixture(lactic acid 12%, formic acid 9%, citric acid 5%, butyric acid 5% and phosphoric acid 6%) on growth performance, organ weight, blood immunological parameter and intestinal villi morphology in broilers. Dietary treatments included 1) CON (basal diet), 2) OA1 (basal diet + 0.1% organic acid mixture) and 3) OA2 (basal diet + 0.2% organic acid mixture). Four hundred eighty hatched Arbor Acre broiler chickens were housed in 24 pens of 20 birds each. Eight replicate pens were allotted into each treatment by completely randomized design. Daily weight gain, feed intake and feed/gain were not significantly different among the treatments. In organ weight, that of gizzard was significantly heavier in OA2 than CON (Linear effec t = 0.034). However, those of spleen and intestine were not significantly different among the treatments. Blood immunological parameters such as RBC, WBC and lymphocyte were not significantly difference. In intestinal villi morphology, villi length was increased in OA1 compared to CON (Quadratic effect = 0.050). In conclusion, 0.2% organic acid mixture was effective to improve gizzard weight of broilers.

Effects of Dietary Pro-biotics and Immunomodulator as an Alternative to Antibiotics in Korean Native Chicken

“…, 그리고 생균제 (Rhee et al, 1997;Park and Yoo, 2000;Kim et al, 2004;Kim et al, 2007), 유기산 제 (Woo et al, 2006a;Jang et al, 2008), 면역 증강 제 (Lowry et al, 2005;Park et al, 2008) 등 항생제 대체물질의 개발에 관한 연구가 계속적으로 이루어지고 있다.…”