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Study on biological value of different dietary inorganic phosphorus sources for broiler chickens



Study on biological value of different dietary inorganic phosphorus sources for broiler chickens



Journal of Zhejiang University Agriculture and Life Sciences 28(5): 565-568



The results revealed that biological value of monocalcium phosphate (MCP), dicalcium phosphate (DCP), tricalcium phosphate (TCP), and soft phosphate (each treated with 4 different levels of phosphorus, 0.06%, 0.12%, 0.18%, and 0.24%, respectively) were as follows: 100, 97, 98, and 89 when body weight gain was employed as response criterion; 100, 94, 95, and 79 when ratio of phosphorus retention employed; 100, 91, 93, and 79 when bone ash content (the average of tibia ash and toe ash) employed; 100, 92, 93, and 77 when serum phosphorus level employed; and 100, 94, 95, and 81 when the average of all the above 4 criteria was used. It is suggested that MCP is the best dietary inorganic phosphorus source for broiler chickens. DCP and TCP are also ideal inorganic phosphorus sources with high efficiency.

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