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Effect of Dietary Probiotic on Performance and Humoral Immune Response
(TAYLOR & FRANCIS LTD, 2001) Balevi, T.; Uçan, U. S.; Coşkun, B.; Kurtoğlu, V.; Çetingül, I. S.
1. The effects of dietary supplementation of a commercial probiotic ( Protexin(TM)) on daily feed consumption, egg yield, egg weight, food conversion ratio and humoral immune response in layer hens were investigated. In 7 replicates, a total of 280 40-week-old layers were given diets containing either 0, 250, 500 or 750 parts per million (ppm) for 90 d. 2. When compared with the controls, the food consumption, food conversion ratio and the proportions of damaged eggs were lower in the group consuming 500 ppm probiotic ( P< 0.05). 3. There was no significant difference between the controls and the groups receiving 250 and 750 ppm probiotic in food consumption, food conversion ratio and proportion of damaged eggs. Similarly, the egg yield, egg weight, specific gravity, and peripheral immune response showed no statistically significant differences between the groups.