Effect of Perch Material Type on Performance, Blood Characteristics, and Feather Score of Layer Pullets on Floor during Growth Period (산란계 평사 사육시 육성기 홰 재질에 따른 생산성, 혈액성상, 깃털 손상도에 미치는 영향)
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- Korean Journal of Organic Agriculture
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- v.29 no.4
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- pp.589-600
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- 2021