Lecture 9 Flashcards Preview

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Flashcards in Lecture 9 Deck (12):
1

Where does absorption of LCFAs occur?

Entirely in the SI and dependent upon emulsification aided by bile salts

2

What does increase lipid in diet do to feed intake?

Decreases feed intake

3

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)

4

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

 

5

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

6

What is colostrum very high in?

IgM

IgG

7

What prevents prenatal transmisison of imune globulins in ruminants?

Syndesmochorial placenta

8

What is anti-trypsin?

Present in colostrum which prevents degradation by trypsin in intestines

9

How are antibodies absorbed  by newborns?

Absorbed intact through the intestinal mucosa by pinocytosis

10

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

11

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

12

What is prevented by providing adequate colostrum for passive transfer?

Navel Infection

Joint infection

Scours