title: Effect of Three Colostrum Diets on Passive Transfer of Immunity and Preweaning Health in Calves on a California Dairy following Colostrum Management Training.
abstract: Following colostrum management training, a randomized field trial was conducted on a California dairy to determine the effect of supplementing pooled colostrum with either colostrum-derived replacer (CDR) or second-milking colostrum (transition milk) on failure of passive transfer (FPT) and preweaning morbidity risks. A total of 166 calves were randomly assigned to 4L first-milking pooled colostrum (treatment 1), 2L first-milking pooled colostrum and 2L of CDR (treatment 2), or 2L first-milking pooled colostrum and 2L second-milking pooled colostrum (treatment 3). Mean 24-hour serum TP and IgG for treatments 2 (TP 5.2 g/dL, IgG 15.9 g/L) and 3 (TP 5.4 g/dL, IgG 18.3 g/L) did not statistically differ but were significantly lower than for treatment 1 (TP 5.9 g/dL, IgG 24.6 g/L). Risk of FPT did not differ for treatments 1, 2, and 3 (0.0%, 9.3%, and 1.9%, resp.). Similarly, the preweaning risk of diarrhea (81.0%, 92.5%, and 87.0%, resp.) or pneumonia (6.9%, 13.2%, and 18.5%, resp.) did not differ between treatments. Feeding 4L first-milking pooled colostrum resulted in adequate passive transfer. When first-milking pooled colostrum quantity is inadequate, CDR or second-milking pooled colostrum can be used to supplement the required colostrum volume and IgG mass without adversely affecting the risks of FPT or preweaning diarrhea and pneumonia.
authors.affiliation: Veterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, 18830 Road 112, Tulare, CA 93274, USA.
authors.forename: Deniece R
authors.initials: DR
authors.lastname: Williams
authors.affiliation: Department of Veterinary Medicine & Surgery, Veterinary Medicine Teaching Hospital, College of Veterinary Medicine, University of Missouri, 900 E. Campus Drive, Columbia, MO 65211, USA.
authors.forename: Patrick
authors.initials: P
authors.lastname: Pithua
authors.affiliation: Departamento de Producción y Sanidad Animal, Facultad de Veterinaria, Universidad CEU Cardenal Herrera, Moncada, 46113 Valencia, Spain.
authors.forename: Angel
authors.initials: A
authors.lastname: Garcia
authors.affiliation: Veterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, 18830 Road 112, Tulare, CA 93274, USA.
authors.forename: John
authors.initials: J
authors.lastname: Champagne
authors.affiliation: Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada S7N 5B4 ; The Saskatoon Colostrum Co. Ltd., 30 Molaro Pl, Saskatoon, SK, Canada S7K 6A2.
authors.forename: Deborah M
authors.initials: DM
authors.lastname: Haines
authors.affiliation: Veterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, 18830 Road 112, Tulare, CA 93274, USA ; Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, CA 95616, USA.
authors.forename: Sharif S
authors.initials: SS
authors.lastname: Aly