The Other Side of the Transition: Effects on Colostrum and Calf
نویسنده
چکیده
Over the last 25 yr, extensive research has been conducted on the biology, nutrition, and management of dairy cows during the transition from gestation to lactation. The focus of this research has been to minimize the occurrence of health problems around parturition and to maximize subsequent milk production. Very little attention has been paid to potential effects of different nutritional programs on quantity or quality of colostrum produced at calving, or on the viability or subsequent performance of calves born to cows fed differently during late gestation. This lack of research is unfortunate because dairy producers often report situations where cows calve with too little colostrum to feed to their calves. Likewise, producers may claim that feeding too much energy during the close-up period produces larger calves. What is the scientific evidence that these phenomena actually occur?
منابع مشابه
Correlation between neonatal calf diarrhea and the level of maternally derived antibodies
Passively acquired antibodies through colostrum will protect calves against etiological agents of neonatal calf diarrhea. Among them enteric diseases due to strains of Enterotoxigenic Escherichia coli (ETEC) are the most commonly occurring form of colibacillosis in newborn calves. Specific antibodies against whole ETEC cells and total immunoglobulin G in dam serum, colostrum and calf serum were...
متن کاملα-Tocopherol and β-carotene concentrations in feed, colostrum, cow and calf serum in Swedish dairy herds with high or low calf mortality
BACKGROUND A study of herd-level risk factors for calf mortality in large Swedish dairy herds showed low serum concentrations of α-tocopherol and β-carotene in 1-7 day old calves to be more common in high mortality herds. Therefore, we aimed to investigate if calf mortality risk at herd level is associated with concentrations of α-tocopherol and/or β-carotene at individual level in feed, colost...
متن کاملPassive protective effect of anti-K99 antibodies against enterotoxigenic E.coli infection in neonatal calves
BACKGROUND: BACKGROUND: Enterotoxigenic Escherichia coli (ETEC) is the main causative agents of neonatal calf diarrhea. Passive transfer of antibodies that is derived from the dams of the calves through their colostrum plays an important role in disease prevention. OBJECTIVES: To determine the presence of natural specific antibodies against K99 antigen in dam’s serum and colostrum as well as in...
متن کاملInfluence of Starch Sources in Prepartum Diet on Colostrum Quality and Blood Immunoglobulin Concentration of Calves
The main objective of this study was to evaluate the effect of dietary inclusion of wheat or corn as the main source of starch in prepartum diets on colostrum composition, colostrum IgG1 and IgG2 concentrations, serum IgG1 and IgG2 concentrations of calves and efficiency of IgG1, IgG2 and total Ig absorption. For this purpose, thirty primiparous and twenty multiparous Holstein cows were used in...
متن کامل