Feed and Nutrients
What is the most important nutrient for animal survival?
Water
What is “dry matter”?
The portion of feed left after all water is removed
What is the Pearson Square used for?
Balancing feed rations for a target nutrient level
What is the main goal of livestock reproduction?
To produce offspring
Breeding two animals of the same breed is called
Purebreeding
Which nutrient builds and repairs muscle tissue?
Protein
Why do we compare feeds on a dry matter basis?
To fairly compare nutrient content between feeds
True or False: The Pearson Square can only be used for protein.
false
True or False: Gestation is the time between fertilization and birth.
True
What is crossbreeding used for?
To mix breeds for better traits
True or False: Fats provide more energy per pound than carbohydrates.
True
Find Protein on a DM basis:
Feed: 30% DM; 12% crude protein (as-fed).
40.0% protein (DM basis).
What are the four key parts of a Pearson Square?
Two feed ingredients, target nutrient %, and two difference values
The male reproductive cell in animals is called
Sperm
Inbreeding increases genetic diversity. True or False.
False
Are minerals organic or inorganic?
inorganic
Find: protein on as-fed basis.
Feed: 85% DM; 18% protein (DM basis).
15.30% protein (as-fed).
What two ingredients are needed in a Pearson Square?
Two feeds with different nutrient levels
Where does fertilization normally occur in mammals?
Oviduct
Black (B) is dominant over red (b). A heterozygous black angus bull is bred to a heterozygous black angus cow. What percent red will there offspring be? What percent black?
Percent Red = 25%
Percent Black = 75%
List the six main nutrients.
Water, Protein, Carbohydrates, Fats, Vitamins, Minerals
If corn (8%) and soybean meal (44%) are used to make a 16% mix, which ingredient makes up more of the mix?
Corn
What is the term for the time when a female animal is ready to mate?
Estrus (Heat)
Breeeding two animals together in hopes the offspring gets both desireable traits from parents is called?
Hybird Vigor