Effects of continuous supplementations of ascorbic acid, aspirin, vitamin E, and selenium on performance, immune response and some biochemical parameters under normal environmental and management conditions in broilers

Male broiler chickens were used to determine the effects of ascorbic acid, aspirin, ascorbic acid + aspirin, vitamin E + selenium, and ascorbic acid + aspirin + vitamin E + selenium supplementation on performance, IgG levels, and some biochemical parameters in blood. Three hundred and ninety six 1-day-old male Hubbunt broilers were randomly divided into six groups. Each group was placed in different pens and feed and water were provided ad libitum. Performance parameters (body weight, feed intake and feed conversion), IgG levels, vitamins A and E, and some biochemical parameters in blood (Na, K, Cl, total protein and albumin) were measured on days 15, 30, and 45 in all groups. The results revealed at the end of the study showed that aspirin, vitamin C, vitamin E + selenium administrations exhibited no effects on levels of vitamin A, vitamin E, total protein, albumin, Na, Cl and K in blood, while aspirin administration decreased IgG level. Vitamin C administration increased IgG level in serum, aspirin + vitamin C administration increased albumin and K in serum, aspirin + vitamin C + vitamin E + selenium administration increased vitamin E and Na level in serum. Also, there was no significant difference in performance between the control and the experimental groups. It was suggested that vitamin C administration to diets may be useful for broiler breeds due to the observed increased IgG level.