Applied Nut LAB Exam 2

If feeds are allowed to air dry (hay), approximately ____ water will remain

10%

Nutrient profiles and weights of feed may be expressed on a dry matter, as-fed or air-dry basis

True

If you're deficient in sodium what should we feed

sodium chloride

What do you add into a swine ration to start building the ration

Carbohydrates of cereal grains such as corn, sorghum grain, wheat and barley supply most of the energy in swine rations. 

1) Dry matter 

The dry matter basis assumes no water is present — 100 percent dry matter.

2) As fed

Represents feed as it would be fed to the animal, including water.

3) Air dry

• Most feeds eventually equilibrate to 90 percent dry matter (10 percent moisture). 

• Assume the presence of 10 percent water. 

Most feeds eventually equilibrate to __ percent dry matter (10 percent moisture). 

• Assume the presence of 10 percent water. 

90

The percentage of that nutrient in the feed will increase because it becomes more _____________ with the removal of water

CONCENTRATED

As a rule of thumb, when converting from an as-fed to dry matter basis, nutrient concentrations will _____, but weight will _______

Increase; decrease

A

Feed Additives

B

Fat Suppl.

C

Bypass protein

D

Minerals and vitamins

E

NFC feeds grains byproducts

F

Rumen degradable protein

G

Forages physical fiber

Total fat should not go above 7 percent of the diet DM.

No more than 2 percent added fat should be from any one of these sources: animal, vegetable or rumen inert.

True

Carbohydrates of cereal grains such as ___, _____, ______ and ____ supply most of the energy in swine rations. 

corn, sorghum grain, wheat, barley

Protein of cereal grains is of rather _____ quality for swine as a result of the ____ content of certain essential amino acids

poor, low

Assume hay was analyzed to provide 10 percent crude protein (CP), as-fed. The haylage contained 50 percent water (50 percent dry matter (DM)). What is the CP percentage when expressed on a DM basis?

Practice math 1

Assume high-moisture corn (74 percent DM) was analyzed to provide 93 percent total digestible nutrient (TDN) on a DM basis. How much TDN does the corn provide, as-fed?

Practice math 2

On an as-fed basis, a feedlot finishing ration is 60 percent DM. If the cattle consume 40 lb of the ration, how much actual DM is consumed?

Practice math 3