Effect of Vitamin D and Phytase on Growth, Blood Mineral Level and Slaughter Parameters of Broilers
Effect of Vitamin D and Phytase on Growth, Blood Mineral Level and Slaughter Parameters of Broilers
Ali Raza1, Muhammad Sharif1*, Fawwad Ahmad1, Asghar Ali Kamboh2, Muhammad Saeed3, Muhammad Ashraf1 and Asad Ullah Hayder1
ABSTRACT
Current study investigated the dietary effect of vitamin D and phytase on performance, blood mineral level and slaughter parameters in broiler chicken. Diet A was without vitamin D and phytase supplementation (control). Diets B, C, D, E, F and G were supplemented with phytase at the rate of 400 FTU/kg, 800 FTU/kg, vitamin D 4000 IU/kg, 8000 IU/kg, phytase 400 FTU/kg + vitamin D 4000 IU/kg and phytase 800 FTU/kg + vitamin D 8000 IU/kg of feed, respectively. Each diet was fed to 30 broiler birds from post hatching to day 35. Feed intake was higher (P < 0.05) in birds offered diet B and D, while the weight gain and feed conversion ratio were better (P < 0.05) in those birds offered diet F. Serum calcium contents were more (P < 0.05) in groups D and G, while higher (P < 0.05) phosphorous contents were found in those birds fed diet C and G. The highest (P < 0.05) dressing percentage was observed in group F, and highest (P < 0.05) tibial ash contents were found in groups F and G. Keel bone length was improved (P < 0.05) in those birds receiving ration F and G, while highest (P < 0.05) shank length was observed in those birds receiving diet G. Based on these results, it was concluded that phytase and vitamin D, at the level of 400 FTU/kg and 4000 IU/kg, cumulatively improved the weight gain, feed conversion ratio, dressing percentage, keel bone length and bone mineralization.
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