section one of dairy science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| dairy science is the science of (3 things) | science of 1. producing 2. processing 3. marketing milk
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| milk processing in the united states 1990 __lbs | 148 billion lbs
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| milk produced annually in the unitesd states in 2002 ___lbs | 169 billion lbs
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| four types of people involved | 1. processors 2. retailor s 3. service 4. supply
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| number of farms us | less than 100,000
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| number of cows | 9.2 million cows
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| why does the industry exist (4) | 1. consumer demand 2. efficient use of resources 3. competitively priced product 4. opportunity for profit
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| consumer demand is increased by (4 things) | 1. population increase 2. per capita demand 3. advertising 4. quality product
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| quality product includes mainly (2things) | taste and saftey
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| animal efficeince from feed most and least efficent animals | dairy cow -- most efficient beef and lamb least efficient
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| labor efficiency from 1955 to 1988 how has efficience changed | efficiency has increased and per cwt has decreased
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| male (name and weight at birth | bull 55-150 lbs
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| female (name and weight at birth) | heifer 50-130 lbs
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| father cow | sire
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| mother cow | dam
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| male puberty (age and weight) | 10-12 months 5-900 lbs
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| female puberty (age and weight) | 6-10 months 4-750 lbs
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| puberty is influenced by (2things) | breed and nutrition
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| wean from dam | cow taken from its mother
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| wean from milk | has to eat big cow food
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| estrous cycle is how many days long | 21 days long
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| estrus is what and how long | is heat and it is 18 hours long
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| estrus | the time period during which a female is sexually receptive
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| how long does the first breeding last | 12-17 months
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| how many days does gestation last | 283
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| first calving is in how many months | 21-26
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| gestation | period during which embryo develops
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| producer | manufacturer of a product
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| calving | giving birth to a calf
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| freshening | to begin lactating
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| heifer | female cow
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| breeding | application of genetic principals to the improvement of farm animals
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| dry period | the time from drying off to re-calving
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| length of dry period (cow and first calver) | regular cow is two months first calvers before there second is three months
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| zero milk | calving (freshening)
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| zero milk | begining of lactation
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| 4-6 weeks | peak milk yield
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| 80-120 days | rebreeding
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| 305-365 days | quit milking and dry off
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| lactation makes how many lbs of milk | 7-35,000 lbs of milk
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| lactation in gallons | 800-4100 gallons
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| 8.6 lbs of milk makes how many gallons | 1 gallon
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| productive life = how many lactations | three to four
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| why is CA popular for dairy? | low humidity good location
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| PA decreasing? | all small farm refusal to change
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| top two dairdy production | US and New Zealand
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| milk sale trends up or down total whole 2 light | down, down, up , up
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