TY - CPAPER AU - Arnold J, Madson DM, Ensley SM, et al TI - Survey of serum vitamin D status across stages of swine production and evaluation of supplemental bulk vitamin D premixes used in swine diets T2 - Journal of Swine Health and Production DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2015 DA - 2015/01/01 L1 - https://www.aasv.org/library/swineinfo/Content/SHAP/2015/v23n1p28.pdf SE - Jan-Feb ER -