During which stage of production are TOTAL net energy req. of beef cows the HIGHEST

During which stage of production are TOTAL net energy req. of beef cows the HIGHEST

Answer: calving to breeding

Which of the following would have the HIGHEST maintenance energy req.

Which of the following would have the HIGHEST maintenance energy req.

Answer: lactating mature angus cow weighing 1000 lbs

Replacement heifers that are managed to produce their first calf t 2 years of age should weigh ___% of their mature body size at the START OF BREEDING SEASON

Replacement heifers that are managed to produce their first calf t 2 years of age should weigh ___% of their mature body size at the START OF BREEDING SEASON

Answer: 60 to 65

For feedstuffs classified as carbonaceous concentrates, which is true

For feedstuffs classified as carbonaceous concentrates, which is true

Answer: high in energy

Proper application of fertilizer to forage crops will result in

Proper application of fertilizer to forage crops will result in

Answer: Forage yield will increase and forage quality will increase

The moisture concentration of forage must be reduced to approximately __% higher in order to successfully store the forage as hay

The moisture concentration of forage must be reduced to approximately __% higher in order to successfully store the forage as hay

Answer: 15%

As the stage of maturity forage feedstuffs increase, the harvest yield will ______ and the neutral detergent fiber concentration will _____

As the stage of maturity forage feedstuffs increase, the harvest yield will ______ and the neutral detergent fiber concentration will _____

increase and increase

Which MICRO minerals will most likely to be deficient in grazing beef cows

Which MICRO minerals will most likely to be deficient in grazing beef cows

Answer: copper and zinc

Which is a macro mineral that is typically found in LOW concentrations in carbonaceous concentrate feedstuffs

Which is a macro mineral that is typically found in LOW concentrations in carbonaceous concentrate feedstuffs

Answer: Calcium

Which class of beef cattle will have the HIGHEST net energy req. for growth

Which class of beef cattle will have the HIGHEST net energy req. for growth

Answer: 500lb large frame heifer

Which are vitamins that need to be supplemented to beef cows consuming moderate quality grass hay

Which are vitamins that need to be supplemented to beef cows consuming moderate quality grass hay

Answer: vitamin A and vitamin E

Which macro mineral may be detrimental to beef cows is the concentration in forages is too high

Which macro mineral may be detrimental to beef cows is the concentration in forages is too high

Answer: sulfur

Coastal hay harvested in april will be [higher or lower] in digestibility, and will have a [higher or lower] ratio of TDN:CP compared to coastal hay harvested in may

Coastal hay harvested in april will be [higher or lower] in digestibility, and will have a [higher or lower] ratio of TDN:CP compared to coastal hay harvested in may

Answer: lower and higher

In the production of beef in the US market animals use ___% of the total feed energy

In the production of beef in the US market animals use ___% of the total feed energy

Answer: 30%

Carbonaceous concentrates have a LOWER concentrations of _______ and HIGHER concentrations of ______ compared to carbonaceous roughages

Carbonaceous concentrates have a LOWER concentrations of _______ and HIGHER concentrations of ______ compared to carbonaceous roughages

Answer: Calcium and phosphorus

Which beef production systems would require that steers be harvested at a heavier slaughter weight in order to achieve similar quality grade beef

Which beef production systems would require that steers be harvested at a heavier slaughter weight in order to achieve similar quality grade beef

Answer: Long- yearling production systems

For which forage toxicity is 3-methylindole the causative agent

For which forage toxicity is 3-methylindole the causative agent

Answer: pulmonary emphysema

Which cereal grain will have the HIGHEST crude fiber concentration and LOWEST in metabolizable energy value

Which cereal grain will have the HIGHEST crude fiber concentration and LOWEST in metabolizable energy value

Answer: Oat grain

Which forage is associated with toxicity caused by a fungus that grows on mature seed heads

Which forage is associated with toxicity caused by a fungus that grows on mature seed heads

Answer: dallisgrass

Which feed has the highest % crude protein

Which feed has the highest % crude protein

Answer: Animal fat