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Dairy Production
n/a
99
Agriculture
Undergraduate 2
05/20/2013

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Cards

Term
3 components of the suspensory system of the udder?
Definition

1. connective tissue/skin

2. lateral suspensory ligament

3. medial suspensory ligament

Term
What percent do the front and rear quarter of udder account for?
Definition

Front: 40%

Read: 60%

Term
Small grape like structure where milk is synthesized?
Definition
Aveoli
Term
Cells that squeeze milk out of grapelike structures
Definition
myoepithelial
Term
hormone that stimulates myoepthithelial cells
Definition
oxytocin
Term
Number of units of blood pass through udder to make one unit of milk
Definition
400-500
Term

Three factors that effect lactation?

 

Definition
Hormones, genetics, pregnancy
Term
Nuero-hormonal control of milk let down and how having a good milking protocal will help
Definition
Stimuli tell pituitary gland to releare oxytocin. Oxytocin reaches the myoepithelial cells in 30-40 second, which contract for 8-12 minutes. Timely milking after stimuli(stripping etc) optimizes on this timing
Term
Hormone that stimulates epithelial cells that produce milk
Definition

Prolactin

 

Term
Posilac is a recombinat form of what hormone?
Definition
Bovine stomatitrophin
Term

T or F.

Milk yield is more heritable than percent milk components.

Definition
false
Term
4 types of milking parlors
Definition

1. herring bone

2. Rotary

3.Side opener

4. Parallel

Term
Schager milking parlor?
Definition
herringbone
Term
Cows should do 3 things
Definition

Standing to eat/drink

standing to be milked

laying down

Term

which compartment of the stomach is larger in a calf at birth?

 

Definition
abosmasum
Term
average goal for daily gain for growing heifers?
Definition
1.8-2lbs
Term
What triggers growth of papillai in rumen of calves?
Definition
VFAs produced by break down of grain
Term
Proper calf diet
Definition
combo of milk, grain, and some forage
Term

what is calf starter?

 

Definition
Grain mix for calves to stimulate rumen development.
Term
What is free choice water important to calves?
Definition
Rumen needs liquid weight. More water consumed more grain eaten
Term
age for weaning
Definition
2 months
Term
Good weaning?
Definition
completed within a week graduatly transitioning from milk to grain
Term
body score ranges from
Definition

1 - 5

 

Term
Body score when cow calves?
Definition
3.25 - 3.75
Term
cow should loose no more than ____ points of BCS through peak milk?
Definition
one
Term
Areas to evaluate body condition?
Definition

Pins

Thurl

Short Ribs

Ribs

Tail attachemnt

hooks

Term

average BC at dairy?

 

Definition
3.25
Term

how evaluate heifers on dairy to make sure meetin full growth potential?

 

Definition
Combo of height and weight. short is a sign of lack of protein
Term
What weight can you breed holstein?
Definition
750-850
Term
What weight can you breed jersey?
Definition
400-500
Term
Most important trait on dairy score card?
Definition
udder
Term
3 other traits on diary score card?
Definition

Frame

Dairy strength

rear feet/legs

 

Term
how often do you change a needle
Definition
ever 10-15 animals or draw from bottle
Term
how to clean needles?
Definition
no soap or disinfectants. no sun exposure. no heat.
Term
Which feed leads to least deveolped rumen/papillae/muscle?
Definition
milk only. no papillae, see through, no muscle
Term
Which feed leads to most deveolped rumen/papillae/muscle?
Definition
milk and grain
Term
Which feed leads to medium deveolped rumen/papillae/muscle?
Definition
milk and hay
Term
what causes growth and development in rumen?
Definition
weight and nutrients other than milk. VFAs.
Term
Describe good weaning process.
Definition
starter grain soon after birth, water free at all times. Wean at 8-9 weeks
Term
tail docking in dairy?
Definition
no
Term
how much space for calves?
Definition
enough to get up and move around
Term
4 things in good calf housing design
Definition

dry comfy bedding

good ventilation

ease of observation

ease of restraint

 

Term
pos and neg to wood hutches
Definition

cheap and easy to build

difficult to clean

Term
2 common diseases in young calves?
Definition
pneumonia, scours
Term
why colostrum important?
Definition
boosts passive imunity, affects long term health
Term
3 colostrum Qs
Definition

Quality - high imminoglobulin concentration/proper storage

Quickness

Quantity - no all make to adbomasum, must compensate

Term
how long colostrum storged in fridge?
Definition
week and 33-35 degrees
Term
how thaw colostrum?
Definition
in warm water less than 120 degrees of in low power micorwave
Term
what does a colostrometer do?
Definition
measures the specific gravity of colostrum
Term
pros and cons of milk replacer?
Definition

less quality protein

convienent, helps when colostrum is low

Term
milk replacer is 20:20, what represent?
Definition
protein and fat content
Term
what is espophageal groove?
Definition
temporary in calves throats takes colostrum directly to abomansum
Term
when dehorn calves?
Definition
within first two months
Term
2 ways to dehorn?
Definition

tubing

hot iron

Term

why dehorn dairy cattle?

 

Definition

safety

close interactions amongst cows and people

Term
what are the 3 major objectives to growing dairy calves
Definition

rumen deveolpment

transition to forage diet

long term health

Term
what are 2 vaccines given?
Definition

J-5

lepto vac

vitamins a, d ,e

multi min

Term
one shot given to calves at dehorning and cows?
Definition
multi min
Term
Cream is what compenent of milk and why does it rise to the top?
Definition
Milk fat; fat globules rise because it is lense dense than protein molecules
Term
homogenization
Definition
milk fat is equalized of separated through out the milk so the don't clump
Term
2 major types of milk protein, which is primary?
Definition

Casein*

Whey

Term
Why is milk such good protein source?
Definition
casien is easily digestable and high quality engergy source. good amino acid comp.
Term
major carb of milk?
Definition
lactose
Term
two primary minerals in milk?
Definition
calcium and phosphorus
Term
Whole fluid milk standards different in CA?
Definition
Ca's standard are higher than national
Term
if milk fat in decrease what goes up to maintain flavor?
Definition
non fat solids - mineral and protein
Term

Which milk component is most variable, which least?

 

Definition
fat>protein>lactose
Term
how many lbs of milk to make 1 lb butter?
Definition
21.2
Term
how many lbs of milk to make 1 lb cheese?
Definition
10
Term
What is Dairy Cares?
Definition
program who's mission is to promote environmental stewarship, responsible animal car, and family vaules. put a face on where milk comes from.
Term
What is CMAB and what do they do?
Definition
California Milk Advisry Board. Marketing for CA milk and milk products. Ca Happy Cows campaign.
Term
How determine quality of colostrum? What are we trying to tell?
Definition
density of antibodies can be measeured with a colostrumeter
Term

how soon should calf be given colostrum and why important?

 

Definition
with in 6 hours of birth to that larger nutrient molecules are able to pass through the intenstinal wall before it begins to shrink
Term
Draw lactation curve
Definition
Term

Globally which country produces the most total milk?

Second?

 

Definition

European union

US

Term
County with most diary cows?
Definition
india
Term
country we export to most
Definition
mexico
Term
general trend of US dairies in terms of number of herds and total numbers of cows
Definition
compared to CA the US has more herds with smaller numbers
Term
Top 5 dairy states in US
Definition

Ca

Wisconsin

Idaho

New York

Pennyslyvania

Term
County in CA produces most milk
Definition
tulare
Term
Milk weighs ___ lbs per gallon
Definition
8.6
Term
What does CWT mean?
Definition
hundred weigh/ 100 lbs
Term
percent of milk of water
Definition
87.8%
Term
percent of milk of fat
Definition
3.5%
Term
percent of milk of protein
Definition
3.1%
Term
percent of milk of lactose
Definition
4.8%
Term

Difference between grade A and grade B milk

 

Definition
Grade A milk is used fro fluid consumption and grade b milk has to be processed
Term
Products made from Class 1:
Definition
fluid products
Term
Products made from Class 2:
Definition
Condensed products - heavy cream, cottage cheese
Term
Products made from Class 3:
Definition
Frozen products
Term
Products made from Class 4a:
Definition
Butter and powdered milk
Term
Products made from Class 4b:
Definition
cheese
Term
What product does most CA milk go to?
Definition
cheese and powdered milk
Term
Define springer
Definition
A heifer who is close to calveing for the first time
Term
Define Cull cow
Definition
a cow that no longer meets the standard expected of her(output, health,etc)and is sold
Term

Define dry cow

 

Definition
a cow that is not lactating
Term
4 breeds
Definition

Holstein

jersey

guernsey

swedish red

 

Term
how soon re-bred cow after she calves?
Definition
2-3 months
Term
how old @ first calf?
Definition
2 years
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