SPECIES MANAGEMENT AND HUSBANDRY GUIDELINES

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Species Description:

Common Name: European Wild Boar

Taxonomic Name: Sus  scrofa

Legal Status:  Vulnerable according to IUCN.  No special status according to CITES.  Reintroduction programs in Scandinavia have been successful.

Distribution:  Originally occurred in Europe, Asia, North Africa and the Malay Archipelago .  Later introduced throughout the world as domesticated animals by humans.

Habitat:  Found in a wide variety of habitats as a result of domestication and introduction to new areas.  Typically found in moist forests and shrublands, especially oak forests and areas where reeds area abundant.

Habits:  Wild pigs are generally active at dusk, dawn and at night, and may travel 2-15 km within an area of 20-150 hectares.  Their diet includes fungi, tubers and bulbs, vegetation, grains and nuts, fruit, eggs, small vertebrates, invertebrates and carrion.  They form “sounders” or herds consisting of 20 individuals on average.  These are generally several older females with young offspring.  Males are solitary.

Physical Characteristics :

Weight:   Adult:  80-300kg

                Newborn:  500-1,500g

Size:  Head and body length is 90-180cm.  Shoulder height is 55-110cm.  Males are generally larger than females.

Color:  Body is usually covered with stiff bristles and usually some finer fur ranging from dark gray to brown or black.  Many individuals have side whiskers and a mane on the nape.

Other:  They are strong swimmers, have an excellent sense of smell, are intelligent and vocalize by squealing or grunting.  Females have 6 pairs of mammae.  Lifespan is about 10 years in the wild, although the record is about 27 years.

 

Husbandry

Housing Requirements:

Facility perimeter/barriers
   
   Materials: 
Rock moats and walls, recycled plastic stockade fence and chain link in concrete footing.

      Height:  Minimum of 5 feet (1.5m) 
      
Special considerations:  Animals should not be able to chew on or lift up barriers.  
   
   Substrate recommendation:  All substrates should be natural, cushion and be non-abrasive to animals’ feet, such as mulch, grass or sandy soil.       
       
     
Size of exhibit recommended:  Please consult Carmi Penny.  
   
   Temperature tolerances:  Can tolerate cool to cold temperatures.  Will rest in mud wallows and seek out sprinklers or other water sources to cool  
      off. Young animals require a heat source, besides bedding, if ambient temperature falls below 5
°C (40°F).  
   
   
      
Shade requirements:  Needed to provide relief from direct sunlight during hotter portions of the year.

Indoor/holding facilities
   
  
     Materials:  Multiple (1-1.2m wide) gates operated by pulley systems with the controls situated in such a way that the caretaker is concealed and away 
     from the entrance of the holding pen when trying to trap animals in holding.  At least two holding pens are recommended with several entrances and exits, 
     creating a “round-about” allowing subordinate animals to easily escape from dominant animals.


   
     Size:  Minimum size is 150 square feet per animal, adding at least 50 square feet for each additional animal.  
   
     
        Door and gate recommendations
: 
Rope or chain pulls/controls need to be out of animals’ reach or protected to prevent animals from having access 
        to them.  

Daily Care and Maintenance:

Water delivery/placement:  Standard livestock tanks, automatically refilling livestock drinkers, etc. situated in such a manner as to minimize contamination of water sources, as animals may attempt to climb into or defecate into drinkers.  

Food delivery/placement:  Ground feeders, stock troughs.  Feeders should have smooth surfaces.  Multiple feeding stations are recommended to prevent food-related aggression.  Areas around feeders should be kept clean to prevent excess ingestion of dirt.  

             Appearance of normal feces:  Greenish-brown, pelleted to slightly clumped.  

Hooftrim requirements:  Will vary depending on activity level and individual.  Trim as needed during chemical immobilizations.  Hooftrims have been infrequent.  

Weight Measurement:  Bar scales with platform on top, at the end of a corridor.  Animals are moved to the platform using a secure push board/door or using food incentives.  Weights are also taken when a specimen has been crated and/or immobilized.  

Recommended social groupings:  Several adult females with female offspring, and male offspring no older than 8-10 months.  An adult male can be introduced if the female(s) seem(s) receptive.  However, the adult male needs to be separated from female group if one of the females is suspected to be pregnant.  

Behavior:  The snout is used as a plow to move soil and uproot vegetation.  The tusks are sometimes used to mark trees.  Enrichment items can be used to lessen rooting behavior.

  Reproduction:

Sexual Maturity:  For both sexes is 8-10 months, however, females generally do not mate until 18 months of age.  Males usually are not able to compete for mating privileges until they reach full size at approximately 5 years.  

Gestation:  105-125 days  

Breeding behavior:  Breeding season is dependant on regional climate.  In warmer climates, females can have several litters per year.  Females have an estrus cycle of 21 days, are receptive for 2-3 days and generally produce one litter annually.  

Parturition:  Signs of:  Increased girth, enlarged udder, distended vulva, pacing and restlessness.  

Female behavior:  Nesting behavior will increase a few days before birth.  Will be come less tolerant of conspecifics.  

Birth of young:  Usually 4-8 per litter.  Young are born with light-colored longitudinal stripes which fade and disappear between 4-6 months.  Weaned after 3-4 months.  

Neonatal care preparations:

Dam’s preparations:  Provide sow with as much space as possible.  Provide various types of nesting material in adequate quantities to accommodate nesting behavior.  Pine shavings or similar materials should be avoided, as they may clump onto neonates and their mucus membranes.                              

Recommended keeper preparations:  Installation of “creep” (area only accessible to youngest offspring) or other method to enable young to investigate and eat solid food undisturbed by adults or older siblings.  Create low-stress environment, monitoring behavior of adults closely after parturition;  it is not uncommon for the dam to cannibalize her young.

Diet: 

See attached diet sheets.  Folivore biscuits and diced vegetables are eaten readily and can be used to reinforce behavior or to facilitate administering medication(s).  

 Medical Concerns/Problems: 

Ivermectin is given, as per veterinary instructions, to reduce internal parasite load.  

Litterguard has been given to pregnant females, as per veterinary instructions, to vaccinate against E. coli in order to have antibodies passed on to offspring through colostrum.  An exam is performed at about two months of age to draw blood, insert a microchip for identification purposes, weigh and check general health.  The animal is then returned to its mother as soon as possible.

Transportation and handling

Level of handling depends on amount of conditioning and desensitization animal has been exposed to, as well as animal’s temperament.  Otherwise chemical immobilization is recommended.  

Animals can be transported in appropriate, well-ventilated crates or in livestock trailers with adequate bedding.    

 

 

Guidelines provided by San Diego Zoo

 

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