ANSC 1011 Lecture Notes - Lecture 10: Colostrum, Weaning, Passive Immunity
Document Summary
Dry cow: far off dry cow, close up dry cow (transition period) Place in housing area: hutch or calf crate. Colostrum and passive immunity: immune system of calf. Incapable of producing antibodies: calf is dependent on passive transfer or maternal antibodies from colostrum, passive immunity. Must occur within 24 hours of birth: small intestine of newborn calf. Can absorb intact large molecules (proteins: closure of gut. 24 hours: so very important to feed as soon as possible. Calf wont drink: work with calf, try to get it to suckle, if not, use esophageal feeder or stomach tube. Feeding pre-ruminant calf: liquid feeding program. Calf starter: first dry feed (grain: palatability important for maximizing intake, coarse textured or pelleted. Encourage consumption beginning at 3-5 days: should be eating some by 7-10 days, keep starter fresh. Feed as much as will eat until intake reaches 4-6 lbs. per day. Water in milk or milk replacer not enough.
