국산 인산칼슘제의 사료적 가치에 관한 연구 1 . 고수준의 어분급여시 인산칼슘제가 부로일러의 성장능력 및 경골내 칼슘 인의 축적에 미치는 영향 = Studies on the nutritive values of various phosphate supplements 1 . Utilization of phosphorus from various phosphate supplements by broiler - type chicks when fed a large amount of fish meal

다국어 초록 (Multilingual Abstract)

In order to compare the utilization of calcium and phosphorus from locally produced tricalcium phosphate (TCP) with that of the imported TCP, dicalcium phosphate (DCP) or bone meal when a considerable amount of fish meal was fed, 300 broiler-type chicks of one day old were divided into 5 treatments consisted of Local TCP, Imparted TCP, Imported DCP, Bone meal and Control group for a period of 8 weeks. The results obtained are summarized as follows. 1. The calcium and phosphorus contents of the imported TCP (32.0%, 18.0%) were the highest, and (those of local TCP, imported DCP and bone meal were analyzed to be 29.6% and 14.6%, 23.7% and 18.0%, 25.1% and 0.1%, respectively. The fluorine contents of all the phosphate supplements studies were less than 0.36%. 2. Body weight ,gain, feed intake and feed efficiency were not influenced by the kind of calcium and phosphorus sources, and were a slightly lower for control group than other groups, though there were no significant differences. 3. No difference was found in some nutrients utilizability when different source of phosphate was fed, however, the groups received TCF, DCP or bone meal showed better utilizability of dry matter, crude fat and carbohydrate than that of the control. 4. The ash content of tibia of chicks fed calcium phosphorus supplements was higher than control group, especially in the case of starter chicks, however, there were no significant differences. 5. The calcium and phosphorus contents of tibia increased proportionally as the ash contents of tibia increased. It was found that mortality of experimental chicks was extremely low. The results obtained from present experiments indicated the various source of inorganic phosphate had no effect on the utilizations of calcium and phosphorus in the diets of broiler chicks. The nutritive values of locally produced TCP was found to be the same as imported products.