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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

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학술저널
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저널정보
한국축산학회(구 한국동물자원과학회) 한국축산학회지 한국축산학회지 제50권 제3호
발행연도
2008.1
수록면
331 - 342 (12page)

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The study was conducted to evaluate effects of dietary phytase on growth performance, meat quality, nutrient digestibility and phosphorus utilization in broilers. Breeding experiment, a total of 480 Arbor acre broilers chicks of 2 days old were randomly divided into 3 treatments with 8 replicates of 20 birds each. The treatments were CON(basal diet), LP(Low phosphorus diet) and CP(Low phosphorus diet+0.05% coated phytase). Metabolism experiment 2, a total of 96 Arbor acre broilers chicks of 5wks old were randomly divided into 4 treatments with 8 replicates of 3 birds each. The treatments were CON(basal diet), LP(Low phosphorus diet), NP(Low phosphorus diet+0.05% normal phytase) and CP(Low phosphorus diet+0.05% coated phytase). Weight gain was significantly increased in CON treatment than LP and CP treatments(P<0.05). F/G in CON and CP treatments was improved than LP treatment(P<0.05). Calcium contents in blood was increased for CP treatment compared to LP treatment(P<0.05). However, Phosphorus in blood was higher in CON treatment compared to LP treatment(P<0.05). Carcass and CIE a* of breast meat were significantly increased in CON treatment than LP treatment(P<0.05). WHC of breast meat was improved for CON and CP treatments compared to LP treatment(P<0.05). Digestibilities of dry matter and nitrogen were higher in CON treatment compared to LP treatment(P<0.05). Crude ash was greater in CON treatment than CP treatment(P<0.05). Calcium was improved for broiler fed CON and CP treatments compared with LP treatment(P<0.05). Digestibility of phosphorus was significantly reduced in LP treatments than CON and CP treatments(P<0.05). CP treatment was significantly increased their dry matter intake, calcium intake and nitrogen retention compared to LP treatment(P<0.05). CON treatment was significantly increased their phosphorus intake and phosphorus retention compared to other treatments(P<0.05). Calcium retention was higher in CON and CP treatments than LP treatment(P<0.05). Phosphorus excretion was significantly reduced in NP treatment than CON and LP treatment(P<0.05). Nitrogen and calcium excretion were significantly reduce in CON treatment than other treatments(P<0.05). In conclusion, Phytase treatment improved performance and decreased calcium and phosphorus excretion in broilers.
#Phytase #Growth performance #Meat quality #Phosphorus utilization #Broilers

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참고문헌 (24)

참고문헌 신청
AOAC / 1995 / Official method of analysis / Association of Official Analytical Chemest. Washington. DC. google schola Carter, S. D. / 1996 / Reducing N and P excretion by dietary manipulation in growing and finishing pigs / J. Anim. Sci 74 (Suppl. 1) : 59 ~ google schola Cromwell, G. L / 1991 / Phosphorus-a key essential nutrient, yet a possible major pollutant- its central role in animal nutrition / Biotechnology in the Feed Industry. Alltech Technical google schola Duncan, D. B / 1995 / Multiple range and multiple F testes / Biometrics. google schola Eeckhout, W / 1991 / The quantitative effects of an industrial microbial phytase and wheat phytase on the apparent phosphorus absorbability of a mixed feed by piglets / Meded google schola

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