swine health dr. randy harp. herd health problems ► biosecurity  external biosecurity ...

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  • Slide 1
  • SWINE HEALTH Dr. Randy Harp
  • Slide 2
  • Herd Health Problems Biosecurity External biosecurity Internal biosecurity
  • Slide 3
  • Development of a Biosecurity Plan Attitude State of Mind Unforgiving attitude required because disease is unforgiving
  • Slide 4
  • Development of a Biosecurity Plan cont. Establish Herd Health Goals Healthy, productive system that can be maintained Type of production system Facility location Health status of start-up herd Cost
  • Slide 5
  • Development of a Biosecurity Plan cont. External Biosecurity Keeping out new diseases Isolation/acclimatization (incoming stock) Separate facility > 200 yards from herd 45 60 days First 30 days (isolation) Animals observed and blood tested PRRS, PRV, brucellosis, TGE Parvo, Swine Influenza Last 30 days (acclimatization) Vaccinate for Lepto, Erysiplas, Parvo
  • Slide 6
  • Development of a Biosecurity Plan cont. External Biosecurity Keeping out new diseases Isolation/acclimatization (incoming stock) cont. Animals exposed to cull sows Allow opportunity to build immunity Donor herd health should be compared closely to that of the recipient herd Administer vaccine as indicated by recipient herd Limit use of antibiotics
  • Slide 7
  • Development of a Biosecurity Plan cont. External Biosecurity Keeping out new diseases Semen Know isolation/acclimatization of boar stud Adequate disease monitoring program for boar stud Procedures for boar stud should be as strict as those for production units
  • Slide 8
  • Development of a Biosecurity Plan cont. External Biosecurity Restrict access to visitors & create barriers Perimeter fence Padlock all outside doors Use signs Require clean out time for visitors Shower in / shower out Provide clothing and boots Sanitize all incoming equipment Feed trucks limited
  • Slide 9
  • Development of a Biosecurity Plan cont. External Biosecurity Develop and enforce strict chute rules Trucks with manure should be excused Load outs designed to prevent entry Establish sacred zones (off limit to trucks) Guillotine gate Boots should be provided for drivers Clean, disinfect, and dry the landout
  • Slide 10
  • Development of a Biosecurity Plan cont. External Biosecurity Keep out other species of animals and insects Rodents, birds, dogs, cats, flies All can transmit diseases Rats and flies can travel two miles
  • Slide 11
  • Development of a Biosecurity Plan cont. External Biosecurity Locate new production units away from other pigs Distance between swine production units Pig density Probability of other pigs coming to area Pathogen Minimum distance to prevent transmission Mycoplasma pneumonia 2 miles TGE.5 miles Atrophic rhinitis.5 miles Strep suis 2 miles Pseudorabies 5 miles PRRS???
  • Slide 12
  • Development of a Biosecurity Plan cont. Internal Biosecurity Adopt optimum production system design All-in / all-out Multiple-site production SEW (segregated early weaning)
  • Slide 13
  • Development of a Biosecurity Plan cont. Internal Biosecurity Install barriers Perimeter fence Bird wire Tree line Dead animal disposal
  • Slide 14
  • Development of a Biosecurity Plan cont. Internal Biosecurity Sanitization Decontaminate rooms between groups Use high pressure spray, rinse all surfaces, disinfect, dry, leave vacant
  • Slide 15
  • Development of a Biosecurity Plan cont. Vaccination Program Leptospirosis, parvovirus, erysiplas 2x/year TGE, PRRS, Atrophic rhinitis, strep suis & ?? Design with veterinarian
  • Slide 16
  • Development of a Biosecurity Plan cont. Internal and External Parasite Control All incoming breeding stock should be treated Use fecal and skin monitoring
  • Slide 17
  • Development of a Biosecurity Plan cont. Slaughter Checks Quarterly checks Liver and lung lesions Nasal turbinates Only portion of herd need to be tested > 140 animals need 11 animals > 1,000 animals need 29 animals
  • Slide 18
  • Development of a Biosecurity Plan cont. Monitoring Quarterly sampling for PRV and brucellosis for seedstock herds Serological testing for other diseased known to be in area Feed testing for mycotoxins
  • Slide 19
  • Development of a Biosecurity Plan cont. Feed additives Growth promotant antibiotics
  • Slide 20
  • Alternative Disease Control Procedures
  • Slide 21
  • Closed herd Specific pathogen free (SPF) Non SPF Isolation of incoming breeding stock
  • Slide 22
  • Alternative Disease Control Procedures Systems management Multiple site production system All-in / all-out Segregated early weaning (SEW) No control
  • Slide 23
  • Specific Pathogen Free (SPF)
  • Slide 24
  • SPF is an attempt to Control diseases Improve management
  • Slide 25
  • Specific Pathogen Free (SPF) Initially set up to control Atrophic rhinitis Mycoplasma hyoneumonia
  • Slide 26
  • Specific Pathogen Free (SPF) cont. Now designed to eliminate & prevent certain chronic growth retarding diseases Mange Lice Swine dysentery Atrophic rhinitis Mycoplasma pneumonia Pseudorabies Brucellosis
  • Slide 27
  • SPF scheme Sow 112 to 114 days (C-section) Take pigs from sow, put in sterile environment Rear in isolation Restock other farms SPF pigs no immunological control, introduce to other pigs
  • Slide 28
  • SPF classification Primary SPF pigs from C-section Secondary SPF Pigs from primary SPF or Pigs from other SPF farms
  • Slide 29
  • Accreditation Requirements Proof of origin Brucellosis validation Pseudorabies validation Herd inspection from veterinarian Free of: lice / mange Swine dysentery
  • Slide 30
  • Accreditation Requirements cont. Quarterly health and disease reports Submit quarterly litter registration Quarterly slaughter checks (10 head) Atrophic rhinitis Mycoplasma hyopneumonia
  • Slide 31
  • Scour Diseases
  • Slide 32
  • TGE (Transmissible gastroenteritis) Cause - corona virus Symptoms - major cause of death in young pigs Baby pigs Sudden vomiting Watery, yellowish diarrhea Odor 90% death loss < 14 days old
  • Slide 33
  • TGE (Transmissible gastroenteritis) cont. Symptoms cont. Older pigs Appetite loss Diarrhea (mild) Control / Prevention Vaccine Good sanitation Bird and rodent control Management
  • Slide 34
  • E. Coli (colibacillosis) Cause bacteria Symptoms Pale, yellow, watery diarrhea Dehydration Edema- produced by toxin of E. Coli Swollen eyelids, stomach Nervous signs Staggering, head tilting, paddling, stumbling, dog sitting
  • Slide 35
  • E. Coli cont. Control / Prevention Sanitation Management vaccination
  • Slide 36
  • Swine Dysentery Cause bacteria (sepulina hyodysenteriae) Symptoms Stool contains blood and mucus Dehydration Poor gain and efficiency Some cases, death
  • Slide 37
  • Swine Dysentery cont. Control / Prevention Management Sanitation Antibiotics Vaccine Control mice which harbor bacteria for 1 year
  • Slide 38
  • Rotavirus Cause virus Symptoms nursing pigs (about 3 weeks old) White, pasty scours Generally do not lose much weight Control / Prevention Management Sanitation Vaccine (antibiotics not effective)
  • Slide 39
  • Coccidiosis Cause protozoa shed in feces Symptoms nursing pigs (7 - 10 days old) Diarrhea yellow, light green / gray Dehydration Control / Prevention Manure removal (it is shed in feces) Management (wash sows before entering farrowing house) sanitation
  • Slide 40
  • Salmonella Cause bacteria Symptoms Acute septicemia (generalized infection of blood and organs) Diarrhea Anorexia Fever, cough Ears, nose, tail, feet,& abdomen become light purple Nervous disorders Posterior weakness, paddling, restlessness
  • Slide 41
  • Salmonella cont. Control / Prevention Antibacterials for treatment Removal of affected pigs Management Sanitation Vaccine Carrier pigs are indistinguishable from other pigs
  • Slide 42
  • Reproductive Diseases
  • Slide 43
  • Brucellosis Cause brucella suis, bacteria Clinical Signs Fever 5-7 days Abortion any time during gestation Weak pigs at birth Genital tract infections & sterility
  • Slide 44
  • Brucellosis cont. Diagnosis Blood agglutination test Prevention Herd testing Initial test Retain validation Retest all breeding stock annually Test 20% of sows annually cull sows
  • Slide 45
  • Brucellosis cont. Prevention cont. Introduce only negative animals into herd Vaccination is unsuccessful Under SPF, must be brucellosis free
  • Slide 46
  • Leptospirosis Cause Numerous organisms bacteria Transferable across species Symptoms Fever, diarrhea Abortions late gestation Immature pigs
  • Slide 47

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