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논문 기본 정보

자료유형
학술저널
저자정보
전세민 (강원대학교) Abdolreza Hosseindoust (강원대학교) Sang Hun Ha (Kangwon National University) Tae Gyun Kim (Kangwon National University) 문준영 (강원대학교 바이오헬스융합학과) Joseph Moturi (강원대학교) Suhyup Lee (Korea National College of Agriculture and Fisheries) YoHan Choi (Rural Development Administration) Sang-Deok Lee (Division of Forest Science Kangwon National University Kangwondaehakgil Chuncheon 24341 Korea) Soo Jin Sa (Korea National College of Agriculture and Fisheries) Jin-Soo Kim (Kangwon National University)
저널정보
한국축산학회(구 한국동물자원과학회) 한국축산학회지 한국축산학회지 제63권 제4호
발행연도
2021.1
수록면
827 - 840 (14page)

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Several studies have focused on Ca and P requirements for pigs. These requirements are estimated from their retention and bone formation. However, modern pig breeds have different responses to dietary Ca and P than traditional breeds, and their requirements are expected to change on an annual basis. Besides individual Ca and P needs, the Ca to P ratio (Ca/ P) is an important factor in determining requirements. This study aimed to implement a linear and quadratic regression analysis to estimate Ca and P requirements based on average daily gain (ADG), apparent total tract digestibility (ATTD) of Ca (ATTD-Ca), ATTD of P (ATTD- P), and crude protein (CP) digestibility. Results show that Ca/P had linear and quadratic effects on ADG in the phytase-supplemented (PS) group in both the 6?11 kg and 11?25 kg categories. In the latter category, the CP digestibility was linearly increased in response to increasing Ca/P in the without-phytase (WP) group. In the 25?50 kg category, there was a linear response of ADG and linear and quadratic responses of CP digestibility to Ca/P in the PS group, while a linear and quadratic increase in CP digestibility and a quadratic effect on ATTD- Ca were observed in the WP group. In the 50?75 kg category, Ca/P had significant quadratic effects on ADG in the PS and WP groups, along with significant linear and quadratic effects on ATTD-Ca. In addition, Ca/P had significant quadratic effects on ATTD-P and led to a significant linear and quadratic increase in the CP digestibility in the WP group. In the 75?100 kg category, analysis showed a significant decrease in ATTD-Ca and ATTD-P in the PS and WP groups; in the latter, ATTD-P and ATTD-Ca were linearly decreased by increasing Ca/P. In conclusion, our equations predicted a higher Ca/P in the 6?25 kg bodyweight categories and a lower Ca/P in the 50-100 kg category than that recommended in the literature.

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