1Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
2Department of Animal Science, Gonbad University, Golestan, Iran.
A total of 448 Ross 308 male broiler chickens were assigned to seven treatments with four replicates, each containing 16 chicks. The birds were reared from d 21 to 42 and effects of physical sizes (ad libitum by a basal commercial broiler diet with 3050 Kcal/Kg ME and 19.06% CP/Kg from 21 to 42 d. The chickens which received clinoptilolite (1.5% with particle size of 0.4-0.8 mm) showed a significant increase in body weight gain compared to the control group birds receiving no clinoptilolite (P<0.05). Adding clinoptilolite to the diet caused a significant improvement in feed conversion ratio in days 21-28, 28-35, 35-42 and 21-42 (P<0.05). Broilers fed 1.5% clinoptilolite with particle size of 0.4- 0.8 mm had lower feed conversion ratio compared to the other groups. The highest level of blood glucose, total protein and albumin were found in birds receiving 1.5% clinoptilolite with the particle size of 0.4- 0.8 mm, while the lowest level of blood glucose, total protein and albumin were obtained in the control groups (P<0.05). The lowest litter moisture was observed in the groups fed with 3% clinoptilolite with a particle size of 1-2 mm. Therefore, it can be concluded that supplementation of the diet with clinoptilolite has positive effects on performance and litter moisture in broilers.
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Please cite this article as: Parizadian Kavan B, Shams Shargh M, Hassani S & Mostafalo Y. 2013. Effects of physical size of clinoptilolite on growth performance, serum biochemical parameters and litter quality of broiler chickens in the growing phase. Poult. Sci. J. 1 (2): 93-104..