Maternal HT during late gestation decreased calf birth weight and weaning weight and compromised the passive IgG transfer, regardless of colostrum source. Feeding colostrum from HT cows during the dry period did not affect AEA or growth performance during the preweaning period, but seemed to impair humoral im- mune response during the first month of life.
A. P. A. Monteiro, S. Tao, I. M. Thompson, and G. E. Dahl1
Department of Animal Sciences, University of Florida, Gainesville 32611
It is essential that sheep and goat producers learn how to feed young animals with a stomach tube. This simple procedure can often save a young animal’s life, thereby increasing lambing and kidding crop rates and enhancing profitability. With a brief amount of instruction and a little practice,
anyone can perform this crucial task quickly, safely, and effectively
Although ensuring that calves have APT is the most significant management factor to ensure the health of neonatal calves on calf ranches, colostrum supplementation during the first 2 wk of life in calves was effective in reducing diarrheal disease and the use of antimicrobials. The ADG up to 4 wk of age in colostrum-supplemented calves was significantly greater compared with that in control calves, likely because of a combination of greater energy intake through the liquid feed, increased grain intake, and fewer days with diarrhea.
A. C. B. Berge, T. E. Besser, D. A. Moore, and W. M. Sischo1
College of Veterinary Medicine, Washington State University, pullman 99164
Heat-treating colostrum at 60°C for 60 min, using either the Perfect Udder bag or batch pasteurizer system, resulted in a significant reduction of colostrum bacterial counts while maintaining colostrum IgG concentrations compared with fresh frozen or fresh refrigerated colostrum. Calves fed heat-treated colostrum (PU or DTB) experienced significantly improved AEA and higher final serum IgG and STP measures at 24 h of age compared with calves fed fresh (FF or FR) colostrum.
A.A. Kryzer,*1 S.M. Godden,* and R. Schell†
*Department of Veterinary Population Medicine, University of MInnesota, St. Paul 55108
This study analyzed the influence of the number of milkings, number of births, and udder quarter in immunoglobulin (Ig) concentration in the colostrum of healthy Holstein cows. It was collected two samples of colostrum by manual milking, getting the first jets to completion of bacteriological examination and immunoglobulin levels by radial immunodiffusion test in agar gel. Immunoglobulin concentrations in the colostrum of Holstein cows were influenced by the number of milking after delivery and the number of lactations. These variations may reduce the immunological quality of
Gomes V., Madureira K.M., Soriano S., Della Libera A.M.M.P., Blagitz M.G. & Benesi F.J. 2011.
A pesquisa avaliou a inluência do número de ordenhas, número de parições e quarto mamário na concentração de imunoglobulinas (Ig) do colostro de vacas hígidas da raça Holandesa. Foram colhidas duas amostras de colostro por ordenha manual, obtendo-se os de imunodifusão em gel de ágar. As amostras positivas ao exame bacteriológico foram eliminadas desta investigação.
Departamento de Clinica Medica, Faculdade de Medicina Veterinaria e Zootecnia, Universidade de Sao o Paulo
The dairy calf is unique in that its only source of early immunity is obtained passively from colostrum after birth. There are many factors that impact the early immune status of the dairy calf. Primary factors include the quality of colostrum fed, time of feeding and amount fed. The resulting condition when blood IgG levels are not met is termed failure of passive transfer or FPT.
A. J. Heinrichs and J. A. Elizondo- Salazar- Department of Dairy and Animal Science, The Pennsylvania State University
Newborn Heifer calves were studied to compare total serum protein and IgG concentrations and apparent efficiency of absorbtion when colostrum was fed by nipple bottle or esophageal feeder. All calves recieved a total dose of 285 g of IgG. The results showed no differences between treatments when examining IgG concentration, total serum protein concentration or AEA and all treatments provided successful passive transfer of immunity. These results confirm that esophogeal feeders can be used to administer up to 3.8 L of colostrum to newborn calves.
J.A Elizondo-Salazar, C. M. Jones, and A. J. Heinrichs, PAS- Department of Dairy and Animal Science, The Pennsylvania State University