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