18 Questions
What contributes to the genetic differences among offspring of the same parents?
Recombination upon fertilization
Which factor affects the rate of genetic improvement from selection?
Selection differential
What does EPD stand for in the context of cattle breeding?
Expected Progeny Differences
Which of the following affects the genetic merit of offspring according to the text?
Proportion of desirable genes in reproductive cells
What is one of the factors that affect the rate of improvement from selection?
Calving ease EPDs
Why can some individuals be genetically superior to the average of their parents?
Due to recombination upon fertilization
What method should a commercial producer use to improve traits with medium to high heritability?
Purchasing bulls from a purebred producer
Which of the following is a result of genes favorable for one trait being either favorable or unfavorable for another trait?
Genetic association
What effect does a positive genetic association between traits such as birth weight, pre-weaning gain, and post-weaning gain have on selection?
Results in an increase in other associated traits when one is improved
How can the rate of progress be increased in beef cattle herds?
Vigorous culling of the cow herd based on production
What impact does a shortened generation interval have on the rate of genetic improvement?
Increases the rate of genetic improvement
Why should a commercial producer use crossbreeding for traits low in heritability?
To benefit from genetic diversification
What is the purpose of using EPDs in the context of the text?
To correct potential pedigree errors and increase the accuracy of EPDs.
Which companies provide genomic performance testing as mentioned in the text?
Zoetis and Neogen.
What is a common reason for genomic defect testing as highlighted in the text?
Detecting genetic defects like curly calf syndrome.
How does genomic testing help ensure accurate EPDs for young sires?
By increasing the confidence of EPDs through genetic markers.
What is a key responsibility of purebred breeders and commercial cattle producers according to the text?
Improving production efficiency through genetic selection.
Why should purebred breeders and commercial cattle producers have a working knowledge of genetics?
To make informed decisions on matings and breeding stock.
Explore the concepts of genetics, crossbreeding, and trait heritability in commercial livestock production. Learn about genetic relationships among traits and how they impact breeding strategies in livestock farming.
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