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Effects of Feeding Heat-Treated Colostrum on Passive Transfer of Immune and Nutritional Parameters in Neonatal Dairy Calves
J. L. Johnson, S. M. Godden,1 T. Molitor, T. Ames, and D. Hagman
“The most exciting result from this study was that feeding heat-treated colostrum resulted in greater serum IgG concentrations in calves, despite the fact that calves in both treatment groups were fed the same total mass of IgG at the same time after birth and using the same feeding method. The authors hypothesize that greater serum IgG concentrations could have resulted because calves receiving heat-treated colostrum were able to absorb a greater proportion of the total mass of IgG presented to the small intestine.”
Heat-Treatment of Bovine Colostrum. II: Effects of Heating Duration on Pathogen Viability and Immunoglobulin G
S. Godden,*1 S. McMartin,* J. Feirtag,† J. Stabel,‡ R. Bey,§ S. Goyal, § L. Metzger,† J. Fetrow,* S. Wells,* and H. Chester-Jones¦
*Department of Veterinary Population Medicine, and
J. Dairy Sci. 89:3476–3483 ©American Dairy Science Association, 2006.
“Large (30-L) batches of moderate- to high-quality bovine colostrum can be heat-treated in a commercial on farm batch pasteurizer at 60°C for at least 120 min without affecting the IgG concentration or sctivity. Mycoplasma bovis, L. monocytogenes, E. coli O157:H7, and S. enteritidis added tocolostrum could not be recovered after colostrum was heat-treated at 60°C for 30 min. Heat-treatment at 60°C for 60 min should be sufficient to eliminate Mycobacterium avium subsp. paratuberculosis (Map) from colostrum in most situations.”
Calf Diseases and Prevention
Sheila M. McGuirk, DVM, PhD and Pamela Ruegg, DVM, MPVM
"Efficient replacement programs endeavour to calve Holstein heifers that weight 550 kg at 22.5 to 25 months of age. Healthy calves can achieve growth rates that allow them to be bred at 13-15 months of age and maximize the potential productivity of the overall dairy herd.”
On-Farm Batch Pasteurization Destroys Mycobacterium paratuberculosis in Waste Milk
J. R. Stabel
J. Dairy Sci. 84:524–527
“These results suggest that batch pasteurization of waste milk contaminated with M. paratuberculosis was ffective at generating a clean product to feed to young calves.”
Pasteurized Milk and Colostrum for Calves: An Option or Necessity?
Sandra Godden* and Hugh Chester-Jones¦
“Studies have shown that pasteurization, both batch and HTST, is effective in destroying viable bacteria for most of the pathogenic species threatening calves. Two studies to-date have used commercial on-farm pasteurization units; one a batch unit, the other HTST–both demonstrated that the pasteurization unit effectively destroyed the Johne’s organism.”
ON-FARM BATCH PASTEURIZATION DESTROYS MYCOBACTERIUM PARATUBERCULOSIS IN WASTE MILK
J. Dairy Sci 2001;84(2):524-527
“These results suggest that batch pasteurization of waste milk contaminated with M. paratubertculosis was effective at generating a clean product to feed to young calves.”
MYCOBACTERIUM PARATUBERCULOSIS–JOHNE’S DISEASE
J. Dairy Sci 2002;85(12):31228-3205
A total of 18, including 7 regular batch and 11 high temperature short time (HTST) pasteurization experiments were conducted in this study. Milk samples were spiked with escherichia coli and mycobacterium bovis BCG strains...no survivors were detected from any of the slants or broths corresponding to the seven regular batch pasteurization trials. Mptb survivors were detected in two of the HTST experiments.
PASTEURIZATION OF DISCARD MYCOPLASMA MASTITIC MILK
“...on-the-farm pasteurization of the discard milk...prevented additional illness in the calves.”
MICROBIAL RISK
“Pasteurization can be an effective means for reducing microbial load of waste milk and improving overall milk quality. Calves fed pasteurized colostrum and waste milk were worth $8.13 more in gross margin per calf compared with calves fed non pasteurized milk and colostrum.”
PASTEURIZED WASTE MILK SAFE FOR CALVES
“It was then pasteurized using two commercial on-farm pasteurizers – a batch model (from DairyTech Inc., Windsor, Colorado) and a high temperature, short-time (HTST) model (from BetterMilk Inc., Winona, Minnesota). Godden says pasteurization with the batch unit destroyed all of the organisms in both milk and colostrum.”
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