Common Feeds For FA Flashcards
T/F: in order to appropriately feed the cow, you must first appropriately feed the rumen
True
So deep :’)
How many carbons do acetate, propionate, and butyrate have?
2, 3, and 4, respectively
Of the VFAs, identify the glucose precursor, the fat precursor, and the rumen/colon feeder
Propionate - glucose
Acetate - fat
Butyrate - feeds rumen and colon
What happens to dietary protein when it enters the rumen?
Proteases in the rumen break down proteins into amino acids
AA are broken down into ammonia
Other microbes then take these products and make microbial proteins
What happens to any ammonia that isn’t used by the microbes in the rumen?
Goes to the liver to be converted into urea
Urea that is in the liver can be excreted in the saliva or can pass from the blood back into the rumen or excreted in the urine
Why is it important to be aware of how much lysine is in the diet?
Lysine isn’t made in the body
Usually the first limiting agent in the diet
What is a cow’s #1 source of protein?
Rumen bacteria <3
What happens when you feed >6% fat in the diet?
Ash + fat = soap
Also too much fat impairs the microbes
What is the most common feed source in the US?
Pasture (East) and Rangeland (West)
What is the primary feed source for hogs and chickens?
Corn and soybean meal
Discuss the basic differences between a younger plant and an older plant
Younger - best quality, highest protein
Older - higher yield, lower quality
What is the easiest indicator to determine rumen health immediately upon walking into a group of cows?
If they aren’t eating, they should be chewing their cud
T/F: Cows are constant snackers
True - me too
Can feed them twice daily, but they’ll come and eat like 10 small meals throughout the day
How does grazing behavior change with heat stress?
Pound it down in the morning and the evening
Swecker says, “Energy is always an ___________”
Estimation
