Beef Final

this is the type of age range when heifers reach puberty

6-14 months

this percentage is typically expected for abortions in your herd

3-5

this term refers to calves that are weaned and grown before entering the feedlot

backgrounded calves

this analysis evaluates how changes in inputs affect profitability

sensitivity analysis - changes in variables

• feed costs

• death loss

his program acronym relates to benchmarking cattle performance

GOLD

quality grade favors this type of frame size

smaller (earlier maturing) frame cattle

definition of heterosis

improved performance of crossbreds over purebreds

63 day breeding season exposes cows to how many estrous cycles

3

offspring performance

EPDs

non infectious causes of abortion

• nutrition

• genetics

• dystocia

• stress

• twins

• trauma

• live vaccines

calves placed on grass or forage for growth before finishing

stocker calves

genetic masking

epistasis

immunity passed through mom to calf

passive - IgG’s

under conditioned cattle discounted in the market

green cattle

bull to cow ratio for yearling bull

10-20

labour, equipment, housing etc per head per day

yardage

yield grades favor this type of frame size

larger frame size cattle

4 main types of scours

• protozoa

• milk

• viral

• bacterial

death loss is measured during these 2 times periods

pre weaning and post weaning

equation to calculate weaning rate

calves weaned / cows exposed x 100

acronym strengths, weakness, oppurtunity, threat

swot

formula for RFI

actual feed intake - expected feed intake

these issues with bulls can increase open rates

• poor libido

• injury

• sperm quality

• disease

• poor condition

difficult or abnormal calving

dystocia

3 reasons for crossbreeding

• heterosis

• breed compliment

• dominant & epistatic effect

3 key marketing considerations when selling calves

• marketing considerations

• animal type

• management and nutrition considerations

what does RFI stand for

residual feed intake

4 parts of the breakeven

• purchase price

• sale price

• cost of gain

• performance of cattle

3 main drivers of profitability

• optimizing productivity - think GOLD

• fixed costs

• feed costs
  

3 main factors affecting calf price

• animal type

• nutrition and management

• marketing

at what temp do you check every hour

-20

if warmer than -20 how often are you checking calves

2 hours

order of safety

• you

• calves

• cows

what is the function of progesterone

• support fetal development

• suppress contractions

• maintains pregnancy

what is the function of estrogen

• prepare uterus

• stimulate contractions

• mammary development

what is the function of cortisol

stress hormone that initiates parturition

four functions of a placenta

• exchange oxygen and carbon dioxide

• transfers nutrients to fetus and removes waste

• provides protective barrier

• produces hormones to support pregnancy

3 stages of parturition

• dilation of the cervix

• delivery of calf (active delivery)

• delivery of afterbirth (cleaning)

indicatots of stage 1 paturition

• restlessness

• tail raising

• wideing of outer repro tract

signs that a cow will need assistance based on progress

• slow progress

• no progress

• dystocia

• malpresentation

• struggling to push

managing cow and calf after birth

what is obstetrics

• managing pregnancy

• calving

• recovery

what is primiparous

a female giving birth for the first time

what is a uterus

hollow organ in female mammals where offspring are conceived and gestated

what is myometrium

smooth muscle layer in uterus creates contractions during labour

what is endometrium

• inner lining of the uterus

• supports placenta and developing calf

when can abortions occur

when moving cattle from pasture to pasture

what analysis evaluates how changes in inputs affect profitability

sensitivity analysis

target for calving distribution

• 70% bred by first 21 days

• 85% bred by second 21 days

• 96% bred by end of season

what is the amnion

• membrane formed from chorion that surrounds and encloses fetus

• filled with fluid to protect