Breeds of Livestock

What is a breed?

• A group of animals within a species defined by a set of distinguishable traits

• A genetically determined characteristic or feature

• A written record of the 'family tree' for a particular animal

• A club, society, or registry formed to support accurate recording of ancestry

What are lowly heritable traits?

• Traits that respond slowly to selection due to environmental issues

• Offspring from a male and female of the same breed

• A combination of two or more breeds in controlled ratios

• A planned breeding regimen of several generations of selective crossing

What is the purpose of breed associations?

• To support accurate recording of ancestry and define breed standards

• To increase the value of an animal through registration

• To combine the genetic advantages of multiple breeds

• To mate unrelated individuals within a breed

What is the term for offspring from a male and female of the same breed?

• Purebred

• Crossbred

• Composite

• Outcrossed

What is the drawback of inbreeding?

• Decreases genetic variation and increases chances of undesirable traits

• Provides breed traits that are superior to or stronger than those of the parents

• Produces a uniform group of animals with a fixed percentage of each breed's genotypes

• Mates unrelated individuals within a breed to obtain 'new' genetics

What is the term for the crossing of two breeds with the offspring exhibiting superior traits?

• Heterosis

• Line breeding

• Terminal cross

• Mixed breeding

What is the term for a combination of two distinct breeds resulting in a 50/50 mix of the two breeds?

• Terminal cross

• Mixed breeding

• Composite breed

• Outcrossing

What is the term for a planned breeding regimen of several generations of selective crossing?

• Composite breed

• Outcrossing

• Line breeding

• Crossbreeding

What is the term for mating unrelated individuals within a breed to produce superior offspring?

• Outcrossing

• Composite breeding

• Line breeding

• Crossbreeding

Which of the following breeds is an example of a composite breed?

• Beefmaster

• Hereford

• Angus

• Santa Gertrudis