Exam 2 Flashcards

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1
Q

primary beef breeds in US

A

American angus

Hereford

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2
Q

Seedstock producers

A

raise purebred animals with specific characteristics that are more/less desirable for a particular industry purposes

Sell animals to commercial producers

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3
Q

Commercial producers

A

Buy breeds and use certain production practices to meet marketplace demand

Sell animals to marketplace for consumption

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4
Q

Beef industry is mostly _______ production

A

segmented

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5
Q

Segmented production

A

Animals are sold as they move from one phase to the next (breeding/gestation, growing, harvesting, processing etc)

Exceptions: processing is very consolidated

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6
Q

Integrated production system

A

one owner maintains animal ownership through more than 1 production phase

More common in swine and poultry operations

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7
Q

Small scale producers

A
  • high percent of total producers
  • herd size ~50 or less
  • usually require supplemental income
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8
Q

large scale producers

A
  • small percent of total producers
  • herd size 500+
  • able to make profit
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9
Q

Seasonal calving

A
  • scheduled (cows aren’t seasonal breeders)

- ensures calves are at ideal weight by market time

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10
Q

At what ages are calves weaned?

A

6-7 mo old (usually toward fall)

~530-55 lbs

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11
Q

Overall cow reproductive cycle times

A

Gestation period 283 days

~80 day turnaround to next breeding time (to have a calf around the same time next year)

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12
Q

Advantages to a short breeding season

A
  • short calving season
  • less labor
  • less calf disease
  • improved return to breeding the next year
  • more uniform weaning weights
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13
Q

cow/calf gross revenue

A

number animals sold x weight of animals sold x price per unit weight

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14
Q

Factors considered when determining productivity of breeding females

A
  • fertility/breeding efficacy
  • calving rate (# calves produced per # of pregnancies)
  • calf survival (if born, survive?)
  • calf weight at weaning/sale
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15
Q

General trends in managing a stable herd size

A

~80% mature cow herd whose calves are weaned/sold

~15% turnover (cows culled)

~20 heifers retained per 100 cows as replacement to culled cows (once grown, 15 kept, 5 least productive go to cull)

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16
Q

Strategy for cow/calf profit

A

producer can’t control price they get for what they sell

Producers want to ensure production costs are low to ensure profit is made/maintained (efficiency is important)

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17
Q

Targets to evaluate profitability

A
  • pregnancy rate 95%
  • calving period <60 days
  • early calving pattern (within first 20 days of calving season to ensure calf is larger at weaning)
  • 2 yr olds should deliver calves ~40 days before mature cows (to get longer recovery time)
  • fetal deaths <2%
  • perinatal death 4-6%
  • preweaning calf deaths 1%
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18
Q

Purpose of feedlots

A

Feed cattle for weight gain prior to slaughter

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19
Q

Fed cattle (aka cattle on feed)

A

Fed highly specialized type of feed that facilitates rapid weight gain

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20
Q

Finished cattle

A

ready for slaughter (at weight)

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21
Q

Non-fed cattle

A

culled cattle sent to slaughter after having been used for another purpose
(still fed, but not specialty fed for weight gain)

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22
Q

Feedlot geographical locations

A

High plains, arid/dry environment

TX, OK, CO, KS, NE, IA

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23
Q

Time spent in feed lot

A

3-5 months

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24
Q

Feed used in feedlots

A
  • cereal grains with high energy density
  • type used depends on availability, cost
  • corn, wheat, barley etc
  • forage used is often silage
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25
Q

Feed mill

A

processes grains (roll/steam flake)

mixes feed components to ensure dietary needs are met

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26
Q

All beef cattle are raised in what environment?

A
  • rangeland/grassland/pasture
  • Beef cattle industry is primarily grass-fed
  • forage is essential for ruminant health, cereal grains should never be majority of diet
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27
Q

Can you grow crop on rangeland?

A

nope

Of the world ~50% is grazing land, 15% is usable cropland

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28
Q

Distribution of rangeland in US

A
  • central states

- some distribution out west, but lower population density

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29
Q

Are cow/calf beef operations intensively or extensively managed?

A
  • extensively
  • greater problems with exposure, injury, nutritional deficits
  • likely handled only a few times per year
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30
Q

Reasons to cull

A

old age
poor performance
poor rate of pregnancy

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31
Q

Un-weaned beef calf mortality

A
  • 6% of total deaths
  • Majority is neonates (<3 wks old)
  • calving issues, GI/Resp infection, exposure
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32
Q

What disease process is a major cattle producer concern?

A

respiratory disease

especially in feedlots

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33
Q

Cattle price cycle changes

A

cyclical changes in response to supply/demand occurring over ~10 years

slow due to long generation time of cattle (conception to market is ~1.5 yrs)

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34
Q

Cattle price cycle

A
  • prices good
  • producers build herd to increase income
  • don’t send as many to slaughter, price increases
  • supply begins to exceed demand
  • prices drop
  • producers cull more cows to maintain profitability
  • supply increased, price more decreased, producers lose income
  • supply is gets below demand, prices become good again
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35
Q

Factors beside supply/demand that affect cattle price cycle

A
  • drought

- export market

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36
Q

Beef industry is primarily a ______ market

A

domestic

import/export is a small fraction of consumption

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37
Q

Niche marketing

A

branded products, value-added

usually process verified involves documentation, testing, audits etc.
e.g. grass-fed, certified angus

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38
Q

Main cattle & beef import/export partners to US

A

Canada

Mexico

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39
Q

For both cattle & beef, the US is a greater (importer/exporter).

A

importer

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40
Q

Goat vs. sheep ID

A

Goats: erect tails, always have hair

Sheep: tails hang down, eye slit, can have hair or wool

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41
Q

Goat eating habits

A

browsing - shrubs, leaves at head height or higher

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42
Q

Goat uses

A
  • meat, milk/cheese
  • mohair, cashmere, skins
  • toxic weed and fire control
  • pack goats
  • angora market has declined (synthetics)
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43
Q

Kid

A

juvenile & neonate goat

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44
Q

doe/doeling

A

Female goat

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45
Q

buck/buckling

A

male goat

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46
Q

wether

A

castrated male goat or sheep

47
Q

Tennessee fainting goats have _____ disease.

A

congenital myotonia

48
Q

Goat populations in the US are primarily in…

A

Texas

Also TN, CA, OK, GA, KY

49
Q

Allelomimetic behavior

A

“follow the leader”

show behaviors based on what leader is doing

50
Q

Goat milk supply with winter/spring kidding

A

Breed in August
Kidding starts in January, milk supply surge
Lactation 8-10 months
Milk supply tapers toward August

51
Q

Goat milk supply with fall kidding

A

Breed in April
Kidding starts in September, milk supply surge
Lactation 8-10 months
Milk supply tapers toward April
*Allows for increased milk supply at time when other dairies are tapering off

52
Q

Sheep uses

A
Meat
Wool
Milk (niche market and roquefort cheese)
Show lambs/hobby farms
Fire control, noxious weed control
53
Q

Sheep eating habits

A

Prefers grass, not shrubbery

54
Q

Sheep populations in the US are primarily in…

A

TX, CA, CO, WY, UT

Total populations shift depending on drought

55
Q

Ewe/Ewe lamb

A

Female sheep

56
Q

Ram, Ram lamb, Buck

A

male sheep

57
Q

Tail docking

A
  • keeps udder cleaner
  • decreases prevalence of disease, chance of myiasis (fly strike)
  • dock after 3 palpable joints (to cover vulva)
  • dock to short = increased risk of rectal prolapse
58
Q

Mulesing

A
  • removal of fleeced skin patch around butt, creating scarred tissue patch
  • typically uses a breech clip
  • reduces chance of myiasis
59
Q

Facing

A
  • Trim facial hair to prevent “wool blinding”

- ensures sheep can see to mate

60
Q

Crutching

A
  • shave ewes around butt (remove thorns, burrs, etc)

- decreases penis lacerations during breeding

61
Q

Moving sheep safely

A
  • move toward the horizon & other sheep
  • avoid unfamiliar animals
  • uphill movement preferred
  • follow the sheep in front
  • prefer lighted areas, moving in single file
62
Q

Mutton vs. lamb

A

Lamb <14 mo
Around 14 mo see muscle change
Mutton >14 mo

63
Q

Annual surges in sheep (mostly lamb) slaughter

A

March (high consumer demand)
Sept-Oct (high supply)
Due to religious and ethnic holidays

64
Q

Natural sheep/goat estrous cycle

A
  • Cycle responds to reduced day length
  • Naturally fall breeders
  • Light effect less pronounced in sheep (can change time of year want to breed)
  • Goats - breeding season manipulated by artificial lighting systems
65
Q

Sheep/Goat gestation length

A

142-150 days

66
Q

Show animal cycle

A

Breed in august
kidding/lambing in Jan (as close to Jan 1 as possible)
Wean starting in June

67
Q

Cold climate, range operation sheep cycle

A

Breed in November
Lambing/kidding begins April
Wean in Sept

68
Q

Out of season breeding

“Fall lamb operations”

A

Breed in April
Lamb/kidding in sept
Wean Jan/Feb

69
Q

commercial vs. feral pigs vs. wild boars

A
  • Commercial - domesticated
  • Wild boars - never domesticated
  • Feral swine - domesticated but released/escaped from farms & interbred with wild boars
70
Q

Feral swine populations

A
  • Texas, Cali coast, random southern parts

- 1 in 3 swine operations see feral swine on the operation (zoonotic concerns)

71
Q

commercial pig operation locations

A
corn belt (midwest and great plains states)
breeding operations popular in NC
72
Q

sow

A

intact adult F pig

73
Q

gilt

A

F pig until its first litter

74
Q

barrow

A

castrated male pig

75
Q

farrowing

A

parturition

76
Q

Reproduction times for swine

A

Puberty: 5-8 mo
Estrus q21 days
Gestation: 114 - 116 days (3mo, 3 wk, 3 days)

77
Q

Farrowing crate

A

Keeps mom from falling straight down, injuring piglets

Also allows for hot/cold distributions

78
Q

Indoor pig husbandry

A
  • case by case tail docking, trim needle teeth

- iron injection in neck (due to decreased exposure to dirt) to avoid anemia

79
Q

Weaning/Nursery stage for pigs

A

~20lbs - ~40/60lbs

Ideally wean sooner to increase mom recovery time

80
Q

Grow to finish phase for pigs

A

~60lbs to market weight (260-300lbs)

81
Q

Pig Farm types

A
  • Farrow to finish
  • 3 site system (gestation/farrow, nursery, grow finish)
  • 2 site system (gestation/farrow, nursery to finish) – most preferred
82
Q

Gestation crates

A
  • getting phased out b/c animal welfare concern
  • implemented originally to decrease fighting
  • alternatives: grouped sows or free stall arrangement (preferred, RFID chip)
83
Q

All in all out facility management

A
  • pigs enter disinfected facility as a group
  • pigs also washed upon entrance
  • once ready for next stage, all pigs moved out, entire facility steam cleaned/disinfected
  • limits potential for environment/building to be a reservoir - key for biosecurity
84
Q

SPF operation

A

Specfic pathogen-free herds

  • shower in, shower out
  • isolation, biosecurity, disease exclusion practices
  • guarantees herd does not have specific pathogen
85
Q

Pork food safety concerns

A
  • Trichinosis
  • Salmonella
  • Campylobacter
  • Not really E. coli (beef thing)
86
Q

Moving Pigs safely

A
  • scared of new things
  • stress/excitement decreases meat quality
  • prefer well-lit areas
  • like to move up & side to side, in tandem
  • slow, quiet, calm
87
Q

How does stress affect meat

A
  • excessive glycogenolysis & hot boy temp = decreased glycogen stores
  • see pale/soft exudate or dark/firm/dry pork
88
Q

Lairage

A

3-6 hr rest period prior to slaughter

ensures pork is good quality

89
Q

Waste Capture Systems

A
  • Captures methane, important to reduce GHG emissions

Method: liquid manure capture (slurry), lagoon, soil injector

90
Q

Dairy time/weight of weaning

A

~8 wks, 150-200 lbs

91
Q

Pre-weaning nutrition

A
  • introduce solid feed early to promote rumen function

- do not want to underfeed

92
Q

Pre-weaning health issues

A
  • dystocia (day 1-3)
  • enteric disease (3 days - 3 wks)
  • respiratory infection (main concern until 3 wks)
93
Q

Heifers

A
  • bred a 13-15 mo, 60-65% body weight (~800 lbs)
  • AI
  • First time dams give birth at ~90% full weight (why dystocia is a concern)
94
Q

Fresh vs. transition cow

A

Fresh - recently calved

Transition - in first weeks of lactation, infectious dz, metabolic dz concerns

95
Q

Days in Milk

A
Ideally 305 days lactating
(breed at 60-80 DIM)
dry off for 60 days (rejuvinate mammary tissue)
then calve again (~ 1 yr)
True calving interval is ~13.5 mo
96
Q

Dairy cull vs. beef cull

A

Much higher
~35-40% turnover per year for dairy
~15% for cattle

97
Q

springing cows

A

pregnant cows within a few days of delivery

tail head & perineal ligaments “spring up”

98
Q

Why are dairy cows housed more often than beef operations

A
  • regular feed necessary for production (forage varies per season)
  • harvesting forage is more efficient land use than grazing (fewer acres used for more production)
  • decreases exposure to health risks (parasites, environmental things)
99
Q

Types of housing

A
  • Tie stalls
  • dry lot
  • Freestall
100
Q

How much time should a cow be expected to be lying down?

A

~50% of day

101
Q

best bedding choice

A

sand

102
Q

How are calves typically housed

A

Individually or current trend is group housing (increase socialization)

103
Q

dairy industry changes

A
  • method of feeding
  • mechanization (decreased labor)
  • feed movement, storage, processing
  • commodity feeds
  • reproduction (now AI mostly)
  • amount of production per cow
  • computer records, monitoring
104
Q

Types of monitoring tech

A
  • cow info
  • production data (rumen sensors, milk monitoring)
  • repro status/events (hormones, pregnancies)
  • health events
105
Q

Trend of dairy operations

A
  • decrease since the 40’s/50’s
  • milk production per cow has increased with less total cows used
  • less total methane & waste production
106
Q

Top milk producing states

A
California
Wisconsin
Idaho
New York
Pennsylvania
Colorado is 15th
107
Q

Dairy small vs. large operations

A

Small operations (100 cows or less) are 74% of all operations, 13% total production

Large operations (2,000+ cows) are 1.4% of all operations, 34% total production

108
Q

Milk product trends

A
  • decrease use of milk, cultured milk, butter
  • frozen dairy remains consistent
  • massive increase in cheese use
109
Q

Milk import vs. export

A
  • majority produced in US is consumed in US
  • exportation amount increasing (14%)
  • what is exported, typically to Mexico
  • Europe, Oceania top milk product exporters
110
Q

Dairy bull outcomes

A
  • breeding bulls
  • bob veal
  • special fed veal
  • other non-defied veal types
111
Q

Primary veal states

A

WI, PA, IN, NY

veal distribution mirrors dairy farm distribution

112
Q

dairy beef

A
  • dairy producers have second career - become beef (fed cattle)
  • non-fed = cull cows
  • or can be veal (calves go to beef when low beef cattle numbers, vs. dairy)
113
Q

Current expectations for veal

A
  • colostrum & proper nutrition
  • good maternity pen management
  • clean housing/environment
  • good biosecurity/protocols
  • feed within 6 hrs transport, 3 days+ before transported
114
Q

Antibiotic residue testing

A

Numbers low but much higher rate than all other food animal

  • dairy culls make up 67% all cattle positives
  • bob veal = 24% all cattle positives
  • tainted meat should be 0