Compounds having Advantageous Effect on Rumen Function and Metabolism

Question 1

What are the 5 compounds to mention in this topic

Answer 1

1. Yeast culture
2. Buffers
3. Nicotinic acid
4. CAB substances
5. Glucogenic compounds

Question 2

Yeast culture

Answer 2

Give 5g per cow

High yielding dairy cows pp have suboptimal ferm abolities- idea is to give yeast to use up the O2 hence decreasing the amount, and providing anaerobic conditions

Note: giving yeast also decr lactate and changes VFA proportions

• Aspergillus orysil
• Saccharomyces cervicae

Question 3

Buffers

Answer 3

Maintain pH at 6.2-6.8

The folliwng will incr pH and should give 100-150g/day

• NaHCO3
• KHCO3
• NaH2PO4

Question 4

Difference between buffers and alkalizing agents, and what are the alkalizing agents

Answer 4

Alkalizing agents are not buffers, they can only incr the pH

• HgO
• N2OH
• Na2CO3

Question 5

Nicotinic acid

Answer 5

Also known as Niacin or vit B2

Its ruminal prod is reduced pp

Function: carb, protein and fat metab

Give 6g a day for 2-3 weeks

Question 6

CAB substances

Answer 6

(Na + K)- (Cl-S)

In the last 2 weeks of the dry period- there is a NEB which creates acidic condition that stim Ca mibilisaction from the bones

Give 100g of either Nh4Cl or MgSO4

Question 7

Glucogenic compounds

Answer 7

Lactating cow requires 4g of glucose daily for milk production

Glycerol or propylene glycol: give 300-400ml a day for 3-4 weeks