Where does absorption of LCFAs occur?
Entirely in the SI and dependent upon emulsification aided by bile salts
What does increase lipid in diet do to feed intake?
Decreases feed intake
Name the 4 phases of rumen development and age that this occurs
1. The newborn phase (0-24hrs)
2. Pre-ruminant phase (1day - 3weeks)
3. Transitional Phase (3weeks - 8weeks)
4. Weaning and postweaning Phases (8weeks - adulthood)
Explain the development of the rumen in a newborn
Reticulorumen poorly developed
- papillae absent
- Normal microbial pop absent
Abomasum largest stomach
- No secrtion of acid or pepsinogen
What does the absence of acid or pepsinogen in the abomasum allow for the newborn ruminant?
Allows for immune globulins of colostrum to pass without being digested
What is colostrum very high in?
What prevents prenatal transmisison of imune globulins in ruminants?
What is anti-trypsin?
Present in colostrum which prevents degradation by trypsin in intestines
How are antibodies absorbed by newborns?
Absorbed intact through the intestinal mucosa by pinocytosis
5 things colostrum has other than very high IGs?
Rich source of vitamin A,D and E
Lactose converted to glucose and galactose in intestines and absorbed for energy
Ca and Mg
High in fat
Lactobacilli from mammary gland help colonize gut
Total serum protein guide for colostrum
< 4.5 = No colostrum
4.5 - 4.9 = Inadequate
5.0 - 5.2 = Poor
5.3 - 5.4 = Borderline
5.5 - 7.0 = Acceptable
> 7.0 = dehydration likely
What is prevented by providing adequate colostrum for passive transfer?