VLAC 300 PIGGIES QUIZ 1
Terms
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copy deck
-
PIG PRODUCING COUNTRIES
TOP 6 -
China
EU
USA
Brazil
Canada
Russia
Japan -
PIG EATERS
TOP 6 -
China
EU
USA
Japan
Russia
Brazil
Mexico -
CANADIAN PORK PRODUCTION
BY PROVINCE -
Quebec
Ontario
Manitoba
Saskatchewan
Alberta
B.C. -
ADVANTAGE WESTERN CANADA
5 -
Abundant and low feed costs
~~ 50 - 60% of production costs
Large Land base
~~ location and manure disposal
Low Pig Density
~~ disease transmission
~~ odours
Good Climate
~~ ie temperate - pigs like it cool
Good people
~~ excellent work ethics -
HOG DENSITIES ANINMALS / SQ MILE ARABLE LAND
3 US
5 CANADIAN -
North Carolina
~~ 1200
Iowa
~~ 380
Minnesota
~~ 160
Quebec
~~ 554
Ontario
~~ 235
Manitoba
~~ 100
Alberta
~~ 42
Saskatchewan
~~ 14 -
DISADVANTAGE WESTERN CANADA
5 -
Environmental Concerns
~~ odour
~~ manure disposal
Lack of Expansion Capital
Shortage of Labour
Higher Costs
~~ construction
~~ labour
Distance from retail markets -
MAJOR ISSUES IN SWINE INDUSTRY
6 -
Welfare
~~ stalls
~~ vices
Environmental
~~ odour
~~ manure
~~ disposal
Public Health
~~ zoonosis
~~ influenza
~~ Step suis
Water Availability
Appreciation of Canadian Dollar
FAD
~~ - SOW
- A female that has farrowed at least once
- DRY SOW
- A sow that is NOT lactating
- BOAR
-
An intact male pig
~~ generally post pubertal - GILT
- A femal pig that has NOT yet farrowed
- BARROW
- A castrated male pig
- PIGLET
-
A young pig
~~ generally pre weaning - WEANER PIG
- A pig recently weaned
- FEEDER PIG
-
A pig old enough to enter the grower barn
~~ 25 kg
~~ 8 weeks - MARKET PIG
-
A pig large enough to be processed
~~ 115 kg - FARROW
-
To give birth
~~ gestation interval is 115 -117 days - WEAN
-
remove litter from dam
~~ 14 - 28 days - BREEDING HERD
-
Areas and Animals that are
~~ breeding
~~ gestating
~~ farrowing - FEEDING HERD
-
Areas and Animals that are
~~ nursing in the farrowing barn
~~ growing in the nurseries
~~ more growing in the grower barns
~~ finishing (aka more growing) in the finishing barns - FARROWING BARN
-
Where sows
~~ farrow
~~ nurse litters
~~--~~ 2 - 4 weeks - NURSERY
-
aka WEANER barn
Where pigs are raised after weaning
~~ 5 - 8 weeks - GROW - FINISH BARN
-
Where pigs are raised
~~ after leaving the nursery
~~ and before processing
~~ 8 weeks as growers
~~ 8 weeks as finishers -
PIG BREEDS
4 DEFINITIONS -
Purebreds
~~ regisered
~~ unregistered
~~--~~ the majority
Crossbred
~~ 2 way
~~ 3 way
~~ back cross
F1
~~ cross between two purebreds
Synthetics
~~ company proprietary lines
~~ start with 4 breeds
~~ mix and cross breed
~~ rebreed cross breeds over many generations until "pure" -
MATERNAL BREED
SELECTION CRITERIA
2 -
Fecundity
Mothering Ability -
PATERNAL BREED
SELECTION CRITERIA
2 -
aka TERMINAL
Growth
~~ feed efficiency
Carcass and Meat Quality
~~ high protein
~~ low fat -
MATERNAL BREEDS
5 -
Chines Meishan
~~ 20 live piglets
~~ high fat
Meishan Synthetic
~~ less fat but still too high
~~ retains high fecundity
~~ 12.5% Meishan
Landrace
~~ white
~~ floppy ears
~~ cadallac female line
Large White York
F1
~~ Landrace x Large White York
~~ in majority of NA pig barns
~~ 14 live piglets -
PATERNAL BREEDS
4 -
Pietrain
~~ very heavy set ham
~~ Europeans like big hams
~~ but NA values lion tf not common
~~ porcine stress syndrom
Hampshire
~~ Canadian strains have problem with RN gene
~~--~~ acidic meat
~~--~~ similar to porcine stress syndrome
Duroc
~~ most common terminal sire
~~ well muscled
~~ well marbled
~~ red meat
~~--~~ tf Japanese Market
White Synthetic
~~ ie PIC 337
~~ Duroc and Pietrain combo -
WHERE ARE THE GENETIC NUCLEI OF MAJOR CANADIAN GENETIC COMPANIES
NAME A FEW -
Saskatchewan or Manitoba
PIC
Topigs
Mansanto Choice Genetics
Hypor
Genetiporc
Fast Pigs INc
Designed Genetics Inc
Danbred North America -
GENETIC PYRAMID
GENETIC NUCLEUS -
Purebred Farms
~~ genetic testing and selection
~~ high cost
Great Great Grandparents GGGPs
~~ Maternal
~~--~~ GGGP genetics take 2 years to reach market
~~ Paternal
~~--~~ GGGP genetics take 6 months to reach market
~~ LR x LR ; LW x LW ; DU x DU
Terminal Sires
~~ breed in commercial barns
Boars
~~ 30 matings then
~~--~~ slaughter
~~--~~ down tier
Sows
~~ each produces 6 sows in daughter nucleus -
GENETIC PYRAMID
DAUGHTER NUCLEUS -
Purebred Multiplication
~~ minimal genetic testing
Great Grandparents GGPs
~~ Maternal
~~ LR x LR ; LW x LW
Boars to slaughter
Sows
~~ each produces 6 sows in Multiplication -
GENETIC PYRAMID
MULTIPLICATION -
Crossbred Multiplication
~~ no genetic testing
Grandparents GPs
~~ Maternal
~~ LR x LW
~~ Produce F1s
Boars to slaughter -
GENETIC PYRAMID
COMMERCIAL -
Commercial Productiom
Parents
~~ Maternal
~~ LR x LW
~~ Terminal Sire
~~ Produce Market Population
~~--~~ 25% LR, 25% LW, 50% Terminal Sire
All progeny to slaughter -
PRODUCTION PHASES
4
NAME EM -
Breeding - Gestation
~~ BG
Farrowing
~~ F or FAR
Nursery
~~ N or Nur
Grower and Finisher
~~ GF or Gr or Fin -
BREEDING GESTATION
5 BULLETS -
Gilts
~~ entry
~~ pubertal stimulation
~~ breeding
Sows
~~ weaning
~~ breeding
Breeding
~~ natural
~~ AI
Semen
~~ in house collection
~~ in house processing
Implantation
~~ 11 - 21 days 14 days avg
~~ followed by gestation TO farrowing -
FARROWING
5 BULLETS -
Farrowing
Piglet Processing
- Fe injection
- teeth clipping
- castration
- tail clipping
Lactation
Creep feeding of piglets
Weaning
~~ 14 - 28 days
~~ sow back to Breeding - Gestation -
GROWER AND FINISHER
5 BULLETS -
Regrouped and Sorted
~~ size
~~ sex
~~ breed
Small Pens
~~ 12 - 25 hogs
Large Pens
~~ 50 to 700 hogs
~~ don't fight bc can't count over 30 tf no recognition
~~ easier to find optimum micro environment
Efficient Growth
~~ 25 - 115 kg
~~ 16 weeks
Weigh and Market -
PRODUCTION SYSTEMS
SIX ALL TOGETHER SO YOU CAN
COMPARE AND CONTRAST -
Farrow to Finish
~~ 1200 sows max
~~ Genetics
~~--~~ Gilts
~~--~~ Boars
~~--~~ Semen
~~ Breeder
~~ Farrow
~~ Grower Finisher
~~ All on one site
~~--~~ can be under one roof
Classic
~~ 2 Sites
~~ Single Source
~~ Site One - Breeder Gestation, Farrowing and Nursery
~~ Site - Grower Finisher
~~--~~ Works for Grain Producer
~~ pigs transfered at 25 kg
~~--~~ tf high transport cost
~~--~~ tf high transport stress
2 Site Wean - Finish Isowean System
~~ single or multiple sourced
~~ Site One - Breeder Gestation and Farrowing
~~ Site Two - Nursery and Grower Finishing
~~ transport at 5 kg
~~--~~ tf low transportation cost
~~--~~ tf low transportation stress
~~ superior growth weight vs Classic
3 Site Segregated Weaning
~~ Single Source
~~ Site One - Breeder Gestation and Farrow
~~ Site Two - Nursery
~~ Site Three - Grower Finisher
~~ Isolates weaners at time when colostral immunity lowest
~~ two transport points tf stress and growth interruption
~~ three buildings/sites to maintain
~~ tf not economic
Multi-Source Isowean
~~ multiple sites and sizes of Breeder Gestation and Farrowing units
~~ multiple nursery sites filled weekly in sequence from all BGFs
~~ multiple grower finisher sites filled in weekly to biweekly sequence from Nurseries
~~ each batch stays together from nursery on
Parity Segregated Productin System
~~ Gilt herd is isolated and produces into Seperate Isolated Nursery and Grower Finisher Barns
~~ Parity 1 weaned sows then join Parity 2+ sow herds producing into P2+ Nurseries and Grower Finisher Barns
~~ younger sows produce less immunity in progeny
~~--~~ tf isolate progeny of gilts -
PIG FLOW SYSTEMS
TWO -
Continuous Flow
~~ large air space
~~ comingled ages
~~ multiple weeks of production in one room
~~ pigs enter and exit airspace on weekly basis
~~ tf oldest pigs contaminate youngest
All In All Out
~~ small air spaces containing one weeks production
~~ compartmentalized
~~--~~ by room or by building -
HUMANE PROCESSING
12 STEPS TO THE VANISHING POINT -
6 - 8 processing plants in Western Canada
~~ tightly regulated by CFIA
Delivery to plant by producer
~~ traceable tattoo in left shoulder provides traceability
Assembled in yard to 12 -18 hours
~~ dissapate lactic acid from Porcine Stress Syndrome
Stunned by Electrocution
~~ low current - high voltage
~~ just enough to stun for 2 minutes
~~ too much bursts blood vessels
Shackled and Hung
~~ rear fetlocks
Bled via cervical vena cava
~~ thoracic inlet via knife
Scalded, dehaired and washed
Eviscerated
Chilled 24 Hours
Primal Cuts
~~ Ham
~~ Loin
~~ Shoulder
~ ~ butt (proximal)
~ ~ picnic (distal)
~~ Belly
~ ~ ribs and bacon
Trimmed or Retail Cuts
Further processing
~~ wieners, sausage, pepperoni and breakfast sausage (50% fat from jowls)etc
~~ Curing / Smoking - bacon and ham
Rendered Product
~~ offal, trim, bones etc -
CONDEMNATION
CFIA'S 9 FAVOURITES
ARE THE TOP 3 INCREASING -
Abscess
Arthritis
Peritonitis
Pneumonia
Scepticemia
Icterus
Bruising
Overscald
Contamination
YES - MANURE STORAGE
-
Short Term
~~ in barn storage
~~ shallow 2' pits
~~ slatted floor
~~ pit plug lifted weekly to drain
Long Term
~~ Deep Pits 8'
~~ ~~ limited long term storage
~~ Concrete Tanks
~~ Earthen Manure Storage (EMS)
~ ~ clay or plastic liners
~ ~ allows spreading once per year
~ ~ lagoons covered with plastic or straw
~ ~ manure injected into soil
Noxious Gases
~~ H2S
~ ~ problem with deep pits
~~ Ammonia -
MANURE
A RENEWABLE RESOURCE -
Good but variable source of plant nutrients
~~ Nitrogen 0.3 - 5.8 kg/1000 L
~~ Phosphorus 0.04 - 2.9 kg/1000 L
Nutrient composition varies with
~~ climate
~~ production practices
~~ diets
~~ storage techniques
Liquid and Solid systems
Biodgesters
~~ early adoption phase
~~ reduce green house gas emissions
~~ energy production -
RENDERING
PROTEIN RECYCLING
WHAT CAN AND CAN NOT YOU DO -
Meat and Bone Meal (MBM) available as ingredient for
~~ swine
~~ poultry
~~ other non ruminants
Source of protein, fat (lard), calcium, phosphorus
Feeding MBM derived from ruminants back to ruminants is banned
Ruminant MBM can be fed to swine if Specified Risk Materials (SRM) are removed -
RENDERED PRODUCT
RISK
NAME THE 7 DEADLY SRMS -
Specified Risk Materials (SRMs)
~~ tissues in BSE infected cattle constain the BSE prion and must be removed
Removal of SR<'s for all animal feeds (livestock and pets) as of Jul 06
SRMs
~~ skull
~~ brain
~~ spinal cord
~~ trigeminal and dorsal root ganglia
~~ eyes
~~ tonsils of 30+ month cattle
~~ distal ileum of all ages of cattle
MBM and Tallow (beef fat) traditionly avaoided in high health swine units due to biosecurity
Views may be changing due to cost and evironmental stewardship - FEED PROCESSING
-
Feed represents 50 - 60% of production costs
~~ $60 $70 per pig
Total Mixed Ration
Grains ground to 500 - 700 microns
Western Canadian Feed Ingredients
~~ Protein via soybean, canola and fish meals and field peas
~~ Carbs via wheat, barle corn
~~ fats via tallow, canola oil
~~ Vitamins
~~ Minerals
~~ Salt -
SEMEN PROCESSING
7 FACTS FOR SUCCESS -
Purchased or Collected on Farm
Fresh
~~ frozen reduces farrowing rates
Usually Pooled
~~ several boars per dose
Dose
~~ 3 Billion sperm per dose
~~ 2 - 3 doses per sow
~~ 10 - 35 doses per ejaculate approx 250 mls
~~ 10 -15 min per ejaculate
Storage
~~ 12 Deg C
~~ protect from light
Transported in Styrofoam Coolers
Extenders
~~ 10 day most common
~~ 3 day and 5 - 7 day - WHAT 8 SOURCES OF INFORMATION WOULD YOU CONSULT SHOULD YOU WANT TO HAVE THE HIGHEST T4 OF CLASS OF 09 IN 2010
-
Canadian Pork Council
canadian Pork International
canadian Meat Council
Farm Animal Care Saskatchewan
Provincial Pork Loppy and Marketing Organizations
~~ Sask Pork
~~ Alberta Pork
~~ Manitoba Pork
National Prok Producers Council
Prarie Swine Centre
CFIA - STALLED HOUSING SYSTEMS
-
Most Common
Reduce aggression
Improve feeding consistency
Strongly entrenched in NA industry
Banned in some EU countries
Best stystem to prevent aggression - GROUP HOUSING SYSTEMS
-
Many Types
~~ access to outside pastures, sheds, bedding
~~ Group size from 6 - 60
~~ many feeding methods
~~ varied group dynamics
Ad lib feeding via self feeders not possible
~~ sows will consume more feed than required
~~ fat sows have farrowing problems - GESTATION HOUSING SYSTEMS
-
Discrete Areas in BG Barn
Weaned Sow housing
Breeding area
~~ sows
~~ boars
Implantation and Gestation
~~ 21 - 115 days
Gilt Development and Breeding
Quarantine / Acclimation area
~~ biosecurity
~~ controlled exposure to barn pathogens -
5 IMPORTANT WELFARE CRITERIA
SOW HOUSING
KNOW EM COLD -
Freedom of Movement
~~ stalls vs groups
Freedom from Aggression
~~ stalls vs groups
Control over Individual Feed Intake
~~ seems like a freedom for the producer to me
Environmental Enrichment
Static Space
~~ minimums - WHAT DID GONYOU SAY IN O4
- Neither stall nor group systems satisfy all requirements all of the time, but some systems offer welfare superiour environments and compete in terms of productivity
- FREEDOM OF MOVEMENT
-
Group Housing
~~ Give animal sense of control to select an appropriate micro environment
~~ Provides opportunity for exercise
~~ increased muscle size and tone
~~ shorter 4.6 vs 7.2(stall)hr farrowing
~~ lower cull rate 1% vs 4(stall)%
Stall Housing
- stalls seem to be silent on this topic - FREEDOM FROM AGRESSION
-
Group Housing
~~ occurs during regrouping and feeding
~~ similar to aggression seen throughout production cycle during regrouping
~~ -- ~~ nursery, grower, assembly yards
Reproductive impact greater if mixed pre implant vs post implant
Stall Housing
~~ aggression virtually eliminated
~~ major reason for adoption of stall housing - CONTROL OVER INDIVIDUAL FEED INTAKE
-
Commercial production requires control over absolute amount and composition of feed
Nutrient intake is based on the individual needs of the sow
~~ size
~~ condition
~~ parity
Group Housing
~~ Floor dropped - aggression reduced if multiple feedings
~~ Electronic Sow Feeder Systems (ESF)
~~ -- ~~ individual feeding of sows
~~ -- ~~ aggression from dominant sows at begining of feeding cycle
Stall Housing
~~ provide safe and seperate feeding space
~~ bulk feeding systems lack individual control
~~ drop systems control volume but are not accurate
~~ generally one feed composition per barn
~~ individual diets not feasible - ENVIRONMENTAL ENRICHMENT
-
Group Housing
~~ Straw and Bedding Provide
~~ -- ~~ Thremoregulation
~~ -- ~~ Reduced Hunger
~~ -- ~~ Protection from floor
~~ -- ~~ Increases activity level
~~ EU requires pigs have access to manipulable material
~~ -- ~~ creates biosecurity, manure and labour problems
~~ -- ~~ tf no pig industry in Britan and no enrichment in NA
Stall Housing
~~ some barns have a little piece of chain at the front of the stall - STATIC SPACE REQUIREMENTS
-
Space Requirements voluntary in NA
Group Housing
~~ Floor plan and space/sow critical for success of system
~~ distinct areas required for
~~ - ~~ feeding
~~ - ~~ sleeping
~~ - ~~ dunging
Stall Housing
~~ 60% of time spent in lateral recumbrancy during last 2 weeks of pregnancy
~~ most tradional stalls too small 20 - 24"
~~ minimum requirements
~~ - ~~ 24" small sows
~~ - ~~ 26" medium sows
~~ - ~~ 28" large sows
~~ if stalls to wide sows can turn around or get stuck - TRADITIONAL FLOOR FEEDING
-
Feed usually dropped 1 -2 times per day can be as high as 6 - 8 drops
~~ increasing drops reduces aggression
Fighting is higher in smaller group sizes
~~ < 10 worst
~~ > 30 best
Dominant sows monopolize feed
~~ tf group similar sized sows
~~ tf provide larger feeding space
~~ use generally static groups - TRICKLE FEEDING
-
Sows fed individually in partial stalls that protect head and shoulders
Feed metered at set rate coinciding with eating speed of sow
~~ feed is consumed as dispensed
~~ tf sows stay in stalls
Sows must be sorted by eating rate and requirements
~~ tf increased labour
~~ tf not practicle in large barns - FEED STALLS
-
Full sized feeding stalls
~~ feeding pen
~~ or in group pen
Set amount of feed
~~ top up for individuals
Sows sorted by
~~ size
~~ gestation point
~~ aggressiveness
~~ tf increased labour cost
Works best with static groups - ELECTRONIC SOW FEEDERS
-
Greatest control over individual feed intake
Computer controls amount and type of diet
Daily allowances are automatically adjusted for the stage and condition of sow
Techically complex
Sow ID ear tags or collars can be problematic
Entire group completess feeding in 14 - 18 hrs
~~ some aggression at start of feed cycle
Best suited for large farms -
DESIRED FREEDOM +/- CHART
STALLS -
- FoM
+ FoA Feed
+ FoA Regroup
+/- CoFI Amount
- CoFI Composition
- EE
- SS -
DESIRED FREEDOM +/- CHART
ELECTRONIC FEED SYSTEM -
+ FoM
+ FoA Feed
- FoA Regroup
+ CoFI Amount
+ CoFI Composition
+/- EE
+ SS -
DESIRED FREEDOM +/- CHART
FLOOR FEED -
+ FoM
- FoA Feed
- FoA Regroup
- CoFI Amount
- CoFI Composition
+/- EE
+ SS -
DESIRED FREEDOM +/- CHART
TRICKLE FEED -
+ FoM
+ FoA Feed
- FoA Regroup
+/- CoFI Amount
- CoFI Composition
+/- EE
+ SS -
DESIRED FREEDOM +/- CHART
FEED STALLS -
+ FoM
+ FoA Feed
- FoA Regroup
+ CoFI Amount
+/- CoFI Composition
+/- EE
+ SS -
BREEDING MANAGEMENT
GILTS -
First Fertile Breeding
~~ min age 210 - 240 days
~~ or 2nd or 3rd observed estrus
~~ or min weight 135 kg regardless of age or weight
Litter size increases by 0.5 pgs for each subsequent estrus
~~ 2nd estrus best balance between cost and litter size -
BREEDING MANAGEMENT
WEANED SOWS -
Housed in pens or stalls after weaning
Estrus checks performed with boars 1 - 2 /day
~~ pheromones in saliva stimulate estrus
Most cycle 4 - 7 days after weaning
~~ old 1 day
~~ parity 2 5 days
Standing Heat
~~ mate AI or natural service every 12 - 24 hrs until out of standing heat
~~ usually 2 - 3 matings - HEAT CYCLE
-
- 48 hrs
~~ vulva reddens, swells and subsides over 4 days
-24 hrs
~~ honking
~~ mounting behaviour
0 hrs
~~ Start of Standing (heat) period
~~ lasts 24 - 90 hrs
~~ ovulation 2/3 into cycle
24 hr
~~ stands to back pressure
~~ first insemination
36 hr
~~ 2nd insemination -
BOAR POWER
3 WAYS -
Natural Service Barns
~~ maintain 1 Boar / 20 Females
~~ replacement rate 50% / yr due to genetic advancement
AI Service Barns
~~ 90% of industry
~~ maintain population of STERILE (vasecto or epididiomy)Boars
~~ - ~~ 1 / 200 sows
~~ - ~~ test induce sows
~~ replacment rate 30 - 50% year
~~ - ~~ cull for size and pheromone production
AI Studs
~~ replacement rate 75% - 100% / yr
~~ cull mainly on genetic advancement
~~ also cull performance, health - POST BREEDING MANAGEMENT
-
Sows may be regrouped into group pens
Feeding level is reduced
~~ 1.8 to 2.2 kg/day until day 21
~~ high feed levels increase embryonic death
Minimal stress during implantation period
~~ 12 - 21 days
~~ minimize embryonic death
~~ tf no movement or regrouping
~~ tf no overcrowding
~~ tf provide proper environment - PREGNANCY EXAMINATION
-
Perform heat checks ad day 21 and 42
~~ must use boar
Ultrasonic Pregnancy Examination
~~ day 18 - 35 depending on equipment
Real Time Ultra Sound
~~ day 18 - 25
Doppler
~~ day 30 - 32
A-Mode
~~ day 30 - 35 - LIFE CYCLE OF GILT
-
Gilt (P0)
5 Month
~~ enter system
~~ vaccinate
~~ - ~~ parvo
~~ - ~~ lepto
~~ - ~~ erysipelas
7 - 8 Months
~~ Puberty
~~ sterile mating to induce cycling via pheromones
~~ vaccinate
~~ - ~~ parvo
~~ - ~~ lepto
~~ - ~~ erysipelas
7 - 8 Months
~~ 2 - 3 Fertile Matings
~~ implantation
Gestation
~~ 115 days
~~ vaccinate twice for
~~ - ~~ e coli
~~ - ~~ rota virus
Farrow (P1)
Lactation
~~ 14 - 28 Days
~~ vaccinate booster
~~ - ~~ parvo
~~ - ~~ lepto
~~ - ~~ erysipelas
WSI Weaned to Service Interval
~~ 5 - 8 days
Rebreed - LIFE CYCLE OF SOW
-
Gilt (P1+)
Rebreed
~~ 2 - 3 Fertile Matings
~~ implantation
Gestation
~~ 115 days
~~ vaccinate booster
~~ - ~~ e coli
~~ - ~~ rota virus
Farrow (P2)
Lactation
~~ 14 - 28 Days
~~ vaccinate booster
~~ - ~~ parvo
~~ - ~~ lepto
~~ - ~~ erysipelas
WSI Weaned to Service Interval
~~ 5 - 8 days
Rebreed
Cull after P4 - P7 -
SIGNIFICANT EVENTS PREGNANCY
POTENTIAL CONSEQUENCES PRENATAL DEATH -
Day 0
~~ mating
Day 0 - 35
~~ readsorption
Day 14
~~ placentation begins
Day 14 - Day 115
~~ abortion (dead piglets)
Day 18 - 24
~~ regular return
Day 25 - 37
~~ irregular return
Day 35
~~ skeletal mineralization
Day 37 - 115
~~ fetal mummification
Day 38 - 42
~~ Regular Return
Day 43 - 115
~~ pseudo pregnancy and late return
Day 70
~~ functional fetal immunity
Day 100 - 115
~~ not in pig NIP
Day 113 - 115
~~ premature farrowing
~~ live piglets
Day 115
~~ farrowing -
ENIRONMENTAL MANAGEMENT
PIG FLOW -
Buildings are continuous flow
Facilities generally washed 1 - 2 x per year
~~ Canadian Quality Assurance (QCA) Program of Canadian Pork Council
Pens emptied and refilled in batches -
ENVIRONMENTAL MANAGEMENT
BOARS -
Individually housed to prevent fighting
Territorial and dominant
~~ will fight to death in confined quarters -
ENVIRONMENTAL MANAGEMENT
LIGHTING -
Indigenous pigs are seasonal breeders
~~ farrow in spring
domestic pigs are stimulated by SHORTENING PHOTO PERIOD
Seasonal INFERTILITY peaks when summer breeding for fall farrowing
Most fertile period
~~ fall and winter
~~ max decrease photo period
Maintain 16 hr / day light
~~ breeding barns
~~ gestation barns -
ENVIRONMENTAL MANAGEMENT
TEMPERATURE -
Barn Temp
~~ 15 - 20 deg C
Stalls
~~ 18 - 20 deg C
~~ individual housing
~~ cant escape adverse environment
~~ floor moisture
Group Housed
~~ bedded 15 deg C
~~ concrete 17 deg C
Pregnant sows prone to heat stress
~~ sweat glands nose only
Hosing, Drip nozzels, Misters
~~ require air flow for evaporative cooling and aviod humidity - GILT MANAGEMENT
-
40% Sows culled per year
Repacements required to ensure breeding targets
Proper age distribution required in herd to manintain immunity
~~ younger produce less colostral AB
~~ tf progeny have poor immunity
Replacements
~~ Raised on Farm
~~ - ~~ in house multiplication
~~ purchased from breeding company -
GILT SELECTION
FOUR WAYS TO GET PHYSICAL -
Gilts are selected on basis of their
~~ physical condition
~~ genetic merits for superior reproduction
Physical selection 80 - 100 kg / 4 - 5 months
~~ feet and leg conformation
~~ underline
~~ - ~~ min 12 - 14 well spaced nipples
~~ external genitalia
~~ Defects
~~ - ~~ hernias
~~ - ~~ hermaphrodites - GILT PURCHASE AND ACCLIMATION
-
Match health status of recipient and source farms
vaccinate pre-entry
~~ specific to recipient farm needs
~~ may include antibiotics
Place in semi-isolation
~~ area of barn where disease activity is low
~~ gestation not grower
Use post arrival antimicrobials
~~ typically day 3 - 5 - ACCLIMATION
- Controlled exposure to the pathogens present in recipient farm to allow sufficient immune development without clinical illness
- QUARANTINE
- Isolate gilts in a separate building, a convenient distance from nain unit for 30 - 60 days prior to entry to the breeding barn
-
REPRODUCTIVE CYCLE
NUTRITIONAL RELATIONSHIPS -
Improper (under / over)feeding in one phase will have significant affects in other phases
Overfeeding in gestation adversely impacts lactation performance
~~ tf weaning weight
Underfeeding during lactation adversely impacts
~~ litter size
~~ Wean to Service Interval (WSI) -
NORMAL FOLLICULAR GROWTH
LACTATION -
Prolactin is inhibitory to FSH in early lactation
FSH and Estrogen rise in late lactation
Frequency of LH pulses increase in late lactation
Waves of follicular growth occur prior to weaning
Some breeds cycle during lactation
~~ problematic -
HORMONAL AND NUTRITIONAL
INTERACTIONS -
Interaction amoung feed intake, body composition, neurotransmitters, hypotalamus and ovaries is COMPLEX
~~ Intake - feed, energy protein
~~ Neurotransmitters and Hormones in plasma
~~ Body weight - Fat and Protein composition
~~ Hypothalamus
~~ Ovaries
Underfeeding
~~ Effect on follicular development and oocyte maturation
~~ - ~~ male / female ratio
~~ Endorcrine effects in the late follicular phse of the estrous cycle
~~ Changes in early luteal function and progesterone status
~~ Early embryonic development in the oviduct and uterus
Note Fat Sows dont eat
`` tf overfeeding is a problem as well -
BODY CONDITIONING
GESTATING SOWS
NUMBERS WHERE AND HOW -
~~ 14 mm P2 backfat for Gilts
~~ 18 - 19 mm P2 backfate for all parity sows at farrowing
~~ tf put on 4 mm P2
Scoring
~~ visual and palpation
~~ ultrasound
~~ - ~~ real time
~~ - ~~ A-Mode - P2 SITE
-
5 cm lateral to midline
Last Rib
Perpendicular to skin
Measures Longisimus Dorsi
~~ aka the pork chop - GESTATION DIET
-
Lower Energy and Protein
Crude Protein
~~ 13.5%
Energy (DE)
~~ 3.0 - 3.1 Mcal
Crude Fibre
~~ 5%
Crude Fat
~~ 3%
Calcium
~~ 0.85%
Phosphorus
~~ 0.7%
Total Lysine
~~ 0.6%
Note Most Fetal Growth in Last 2 Weeks - LACTATION DIET
-
Higher Energy and Protein
Crude Protein
~~ 18 - 22%
Energy (DE)
~~ 3.3 - 3.5 Mcal
Crude Fibre
~~ 4%
Crude Fat
~~ 4%
Calcium
~~ 0.9%
Phosphorus
~~ 0.75%
Total Lysine
~~ 1.0%
Note Sows still lose fat via backfat and protein -
SOW DIET COMPOSITION
WESTERN CANADA -
Protein Sources
~~ Soybean meal
~~ Canola meal
~~ Field Peas
Carb Sources
~~ Wheat
~~ Barley
~~ Corn
Fat Sources
~~ Canola oil
~~ Tallow
Vitamins and Minerals
~~ Limestone (Ca)
~~ Monocalcium Phosphate
~~ Salt
~~ Micro Minerals
~~ Vitamins -
PRINCIPLES OF FEEDING SOWS
FOUR -
Sow weight and target gain
Sow body condition
Milk yield in lactation
~~ related to litter size
Stage of production
~~ lactation vs gestation -
FEEDING STRATEGY FOR SOWS
5 STEPS -
Drop after Breeding 72 hrs
~~ increases progesterone
~~ gilts dropped more than sows
Feed to Body Condition
All sows fed 1 1.5 kg more Day 100 - 112
~~ support fetal growth
All sows fed 1 1.5 kg LESS Day 112 - Farrowing
~~ reduce dystocia via emptying GI tract
Feed intake increased during lactation
Use weight and P2 backfat to choose a feeding bracket