birth of a fetus by pregnant females Early termination

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Bacterial Diseases

• 4-H Veterinary Science
• Extension Veterinary Medicine
• Texas AgriLife Extension Service
• College of Veterinary Medicine and Biomedical
  Sciences
• Texas AM System
• http//aevm.tamu.edu

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Objectives

• Describe bacterial diseases that affect the skin
• Describe bacterial diseases that affect the eye
• Describe bacterial diseases that affect the ear
• Describe bacterial diseases that affect the
  reproductive system
• Describe clostridial diseases

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Bacteria

• Definition
• Single-celled microorganisms which can exist
  either as independent (free-living) organisms or
  as parasites (dependent upon another organism for
  life)
• Invade tissues
• May produce
• Pus
• Harmful or poisonous waste

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• Bacteremia
• Blood
• Septicemia
• Harmful waste products in blood
• Toxemia
• Toxins in blood

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• Occurs
• Normal incubation period
• Development of dormant infection
• Pathogens
• Primary bacterial disease
• Secondary bacterial disease
• Predispositions
• Primary infection
• Stress
• Tissue injuries
• Dietary changes

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Generalized Conditions

• Caused by various abnormalities
• Anemia
• Encephalitis
• Hepatitis
• Pneumonia
• Nephritis
• Gastroenteritis

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• Clostridial diseases
• Systems affected
• GI
• Musculo-skeletal
• Nervous
• Spore forming
• Natural inhabitants
• Soil
• Intestinal tracts
• Affects numerous species

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• Two Categories
• Active invasion of tissue with production of
  toxins
• Toxemia resulting from absorption of toxins by
  digestion (enterotoxemias) or ingestion
  (botulism)

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• Types

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• In cattle
• 7-way Clostridial vaccine
• C. chauvoei blackleg
• C. septicum malignant edema
• C. novyi black disease (neck, liver, gut)
• C. sordellii gas gangrene
• C. perfringens Types B, C and D enterotoxemia

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Skin

• Dermatitis
• Description
• Inflammation of the skin
• Causes
• Bacteria
• Arthropods
• Fungi
• Allergens
• Common sign
• Pruritus (itching)
• Skin lesions
• Reddening/thickening of skin
• Bumps
• Blisters
• Crusts or scales

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• Pyoderma
• Description
• Skin condition with the presence of purulent
  exudate (pus)
• Superficial or deep pustules
• Associated with
• Skin allergies
• Hot spots
• Mange conditions
• Observe
• Warm, humid weather

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Eye

• Keratoconjunctivitis
• Description
• Inflammation of the eyeballs surface (cornea)
  and the eyelids lining (conjunctiva)
• Conjunctivitis
• Inflammation of the conjunctiva
• With/without keratitis
• Symptoms
• Reddening of eyelids
• Rubbing

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• Keratitis
• Inflammation of the cornea
• Symptoms
• Opaque or cloudy cornea
• Possibly ulcers
• Sensitive to sunlight
• Mucopurulent (mucus with pus) tears
• Crusty matter around eyes
• Ulcers diagnosed with flourescent dye
• Common name
• Pink eye

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Ear

• Otitis externa
• Description
• Infection of the external ear canal
• Characterization
• Inflammation of epithelium
• Reddening
• Itching
• Drainage
• Symptoms
• Scratching or rubbing

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• Affects primarily dogs and cats
• Predispositions
• Small external ear canal opening
• Excessive hair
• Flopped ears
• Warm, humid weather

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Respiratory System

• Rhinitis
• Description
• Inflammation of the mucous membranes of the nasal
  passages
• Acute or chronic
• Symptoms
• Nasal discharge
• Open-mouth breathing
• Sneezing

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• Sinusitis
• Description
• Inflammation of the sinuses
• Acute or chronic
• Symptoms
• Nasal discharge
• Open-mouth breathing
• Sneezing

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• Pneumonia
• Description
• Bacterial infection in the lung tissue and air
  passages causing acute or chronic inflammation
• Symptoms
• Deep cough
• Difficulty breathing
• Bacteria complicate viral pneumonia

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• Diseases
• Cattle and swine
• Pasteurellosis
• Cats
• Pneumonitis

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• Tonsillitis
• Description
• Inflammation of the tonsils
• Common in dogs
• Symptoms
• Gagging
• Retching
• Soft coughing
• Expulsion of mucus

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Digestive System

• Gastroenteritis
• Description
• Inflammation of the stomach and intestines
• Many types of bacteria
• Symptoms
• Excessive salivation
• Vomiting
• Diarrhea
• Straining
• Abdominal pain
• Hemorrhages
• Blood in diarrhea

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• Diseases
• Salmonellosis
• Enterotoxemia
• Colibacillosis

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Reproductive System

• Metritis
• Description
• Inflammation of the uterus
• Postpartum disorder
• May cause
• Abortions
• Retained placentas
• Symptoms
• Purulent, foul-smelling vaginal discharge
• Persistent metritis
• Infertility
• Diseases
• Contagious equine metritis

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• Abortion
• Description
• Premature birth of a fetus by pregnant females
• Early termination of pregnancy due to bacterial
  infection
• Diseases
• Brucellosis
• Leptospirosis
• Campylobacteriosis
• Trich
• Neospora

Aborted Fetus
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• Termination
• Bacteria attack
• Embryo/fetus
• Placenta
• Uterus
• Transmission
• Ingestion
• Inhalation
• Venereal

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• Mastitis
• Description
• Inflammatory process involving the mammary glands
  or udder tissue during lactation
• Occurrences
• Infected nipple
• Blood
• Penetrating wounds
• Symptoms
• Udder
• Swollen
• Warm
• Painful
• Milk
• Hemorrhagic
• Purulent

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