Shared Flashcard Set

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Beef
Beef Sciences
42
Science
Undergraduate 1
11/11/2012

Additional Science Flashcards

 


 

Cards

Term
What two factors make up beef grading?
Definition
Marbling and Maturity
Term
USDA Beef Quality Grades
Definition

Prime

Choice

Select

Standard

Commercial

Utility

Cutter

Canner

Term
Appropriate cooking temperature
Definition
160°+
Term
The ideal time to send cattle to production is...
Definition
after the lean growth and before the fattening stage
Term
Does a large or a small frame cow have a higher quality grade?
Definition
small
Term
Do large or small framed cows have  better yield grade?
Definition
large
Term
How is the price of market animals determined?
Definition
Quality and Yield grading
Term
Why do people choose beef cattle production?
Definition
  • It utilizes non-tillable land (they eat grass)
  • It is a high quality protein food
Term
what makes poultry popular
Definition
  • easy to make into many different flavors/styles
  • individual wrapping
Term
The nutrients of beef
Definition

iron, zinc, b vitamins, protiens

 

*protein better matches human biology than that of vegtables

Term
when is meat inspected?
Definition
pre and post mortem
Term
what is half of beef consumed in the form of?
Definition
ground beef
Term
What do beef prices result from?
Definition
Supply and demand
Term
What percentage of farms have less than 50 cows?
Definition
77%
Term
Where are most of the cows in the U.S.
Definition

in the western plains

(west of the mississippi)

Term
Why is the west good for the cattle business?
Definition

low population

adequate rain

less competition

tax incentives

Term
why is corn fed to cattle
Definition
  • high quality feed
  • high in energy (grows faster cows)

 

Term
Profit equation for beef production
Definition
  • low cost production
  • high reproductive effciency
  • rapid growth rate cattle
  • production of a quality product
Term
Why do we use artificial insemination in cattle
Definition
allows us to utilize superior genetics
Term
What is the highest production cost for cattle?
Definition
  1. *feed*(<- pst its this one right...i mean left there <- ) 60%
  2. equipment
  3. land
Term
Parameters for deciding how to feed the cows
Definition
  • cow size (feed quality)
  • milking ability (stage of production)
  • age of cow (feed old more)
  • condition score
Term
Results of not enough food
Definition
  • they dont cycle estrus
  • dont get pregnant

*feeding too much just wastes food

Term
How do we improve grazing utilization?
Definition

use intensive or rotational grazing

(make cows eat the grass when it is optimal quality)

Term

T/F

feeding large round bales of hay results in 30-50% loss of feed

Definition
True
Term
characteristics of british breeds
Definition
  • average size, growth rates
  • strong maternal traits
  • high carcass quality, average muscle

 

Term
characteristics of continental breeds
Definition
  • high growth rates
  • high carcass muscle
  • average maternal traits
Term
Characteristics of Brahman breeds
Definition
  • heat tolerance
  • disease parasite resistance
  • (generally seen in the south)
Term
Which breed is larger British(continental) or brahman?
Definition
continental british
Term
why do we cross breed cows?
Definition
To take advantage of breed complimentarily
Term
What is the advantage of crossbreed cows?
Definition

*maternal heterosis*

ie. hybrid vigor or  boost in production

*calf weaning weight

ie. increased lbs of calf weaned per cow exposed

Term
Crossbreeding program goals
Definition
  • maintain high levels of heterosis
  • utilize breeds/genetics that fit

*environment/feed resources

*management

*marketing system

  • simple managable system
Term
Two breed rotational systems are...
Definition

easy to use, manage

10-15% heterosis

Term
the two steps to terminal sire crossbreeding...
Definition
  1. develope a crossbred cow
  2. breed x-bred cows to a sire (terminal) that excels in market animal traits
Term
Are beef inspection and grading required?
Definition
  • Inspection is Required (government)
  • Grading is optional                (USDA)
Term
Quality grading predicts?
Definition

cooked eating quality

 

*60% fat cooks out of meat

Term
Yield grading predicts?
Definition
percent boneless retail product
Term
What percent of farms have over 100 cows and what percent of the calves do they market?
Definition
  • 10% of farms have 100+ cows
  • Market 53% of their calves
Term
Top cattles states
Definition
  • Texas
  • Ok, Mo, Ne, SD, Ks, Mt
Term
How often does a cow estrus?
Definition
every 21 days
Term
How long is a cow's pregnancy?
Definition
9 months
Term
How long is post-partum anestrus?
Definition
1-1.5 months
Term
Live Beef Market Predictors?
Definition
  • Animal Frame size
  • Animal Weight
  • Animal Fat thickness
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