Horses: Taxonomy and History
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Questions and Answers

What is the primary treatment approach for melanomas in horses?

  • Topical ointments only
  • Surgical excision and chemotherapy (correct)
  • Radiation therapy exclusively
  • Antibiotics and steroids

    • Which statement regarding horse slaughter is true?

  • The sale of horse meat is widely accepted without restrictions.
  • There were more than 300k horses processed annually in the 1980s. (correct)
  • Horse slaughter has increased steadily since the 1980s.
  • There are currently 8 operational horse slaughter plants in the US.

    • Which subspecies of dairy cattle is known to be more resilient to hot climates?

  • Bos bison
  • Bos taurus
  • Bos primigenius
  • Bos indicus (correct)

    • Which organization regulates the zoo industry in the United States?

    <p>American Zoo + Aquarium Association</p> Signup and view all the answers

    By the age of 15, what percentage of gray horses typically have visible melanomas?

    <p>80%</p> Signup and view all the answers

    What was the impact of the Federal Meat Inspection Act (FMIA) on horse slaughter?

    <p>It required federal inspection for horses slaughtered for human consumption.</p> Signup and view all the answers

    What is the penalty for violating the Lacey Act related to wildlife trafficking?

    <p>5 years of federal prison and a fine up to $500,000</p> Signup and view all the answers

    Which of the following is NOT a provision of the Endangered Species Act?

    <p>Establishing aquaculture farms for endangered species</p> Signup and view all the answers

    In which year was the Lacey Act originally enacted?

    <p>1900</p> Signup and view all the answers

    What is required for warmblooded animals displayed or used in educational presentations at zoos?

    <p>Special licensing as exhibitors</p> Signup and view all the answers

    What primarily influences the activation and deactivation of the HPO axis in horses?

    <p>Photoperiod or light levels</p> Signup and view all the answers

    What is a characteristic of winter anestrus in horses?

    <p>Low levels of GnRH</p> Signup and view all the answers

    What is the recommended daily intake of roughage for a 1000 lb horse?

    <p>10+ lbs</p> Signup and view all the answers

    Which of the following is a clinical sign of equine laminitis?

    <p>Glazed, pained expression</p> Signup and view all the answers

    What dietary issue is a common cause of equine laminitis?

    <p>Excess consumption of grain or lush pastures</p> Signup and view all the answers

    Which characteristic pertains to a horse’s digestive tract?

    <p>It includes a modest stomach with a large cecum and colon</p> Signup and view all the answers

    What happens to progesterone levels after ovulation in horses?

    <p>They remain consistently high</p> Signup and view all the answers

    What is the primary survival mechanism that horses evolved with?

    <p>Speed</p> Signup and view all the answers

    What is one of the major benefits of spaying a cat?

    <p>Reduction of mammary cancer risk</p> Signup and view all the answers

    At what age do toms become capable of breeding?

    <p>7-10 months</p> Signup and view all the answers

    Which of the following notable risks is associated with ovariohysterectomy (OHE)?

    <p>Surgical risk</p> Signup and view all the answers

    What is a characteristic of the feline estrous cycle?

    <p>Can cycle every 4-30 days without mating</p> Signup and view all the answers

    Which is NOT an outcome of sterile mating in cats?

    <p>Pregnancy</p> Signup and view all the answers

    What is the common name for the species Canis familiaris?

    <p>Domestic dog</p> Signup and view all the answers

    What is one of the significant risks of spaying mentioned?

    <p>Urinary incontinence</p> Signup and view all the answers

    Which statement about the American Curl, Cornish Rex, and Munchkin is true?

    <p>They are breed types mentioned with genetic traits.</p> Signup and view all the answers

    What is the primary purpose of the Convention of International Trade of Endangered Species of Wild Flora and Fauna (CITES)?

    <p>To ensure international trade of wild plants and animals does not threaten their survival</p> Signup and view all the answers

    Which of the following is NOT a role of modern zoos?

    <p>Providing entertainment through big cat shows</p> Signup and view all the answers

    What is a requirement for rehabilitators to legally care for wildlife?

    <p>They must be licensed or permitted rehabilitators or veterinarians</p> Signup and view all the answers

    What does the Animal Welfare Act (1966) NOT regulate?

    <p>Food and fiber research using covered species</p> Signup and view all the answers

    Which aspect is NOT a consideration for exotic animal ownership?

    <p>Social media presence of the owner</p> Signup and view all the answers

    What was one traditional role of zoos?

    <p>To confine and display wild animals for entertainment</p> Signup and view all the answers

    Which of the following is necessary for a wildlife rehabilitator to accept donations?

    <p>They must have a license or permit</p> Signup and view all the answers

    Which law specifically regulates the treatment and transport of warm-blooded animals?

    <p>Animal Welfare Act (1966)</p> Signup and view all the answers

    What is the correct classification order of horses?

    <p>Phylum: Chordata, Class: Mammalia, Order: Perissodactyla</p> Signup and view all the answers

    Which of these species is classified under the genus Equus?

    <p>Equus burchelli</p> Signup and view all the answers

    Which period marked the significant increase of horses in the United States?

    <p>Post-1960s</p> Signup and view all the answers

    What defines a draft breed of horse?

    <p>Heavier and stronger horses with cold-blooded temperament</p> Signup and view all the answers

    What is a primary characteristic that differentiates donkeys from horses?

    <p>Shorter stature with longer ears</p> Signup and view all the answers

    What is the average length of a horse's estrous cycle?

    <p>21 days</p> Signup and view all the answers

    What term is given to a male donkey?

    <p>Jack</p> Signup and view all the answers

    What factor is most likely to delay puberty in fillies?

    <p>Poor nutrition</p> Signup and view all the answers

    What is the gestation period for horses?

    <p>340 days</p> Signup and view all the answers

    Which of the following breeds is classified as a light breed?

    <p>Thoroughbred</p> Signup and view all the answers

    Study Notes

    Horses: Taxonomy and Species

    • Phylum: chordata
    • Subphylum: vertebrata
    • Class: mammalia
    • Order: Perissodactyla (odd-toed)
    • Family: Equidae
    • Genus: Equus (species vary)
    • Equus asinus: asses and donkeys
    • Equus caballus: true horse
    • Equus przewalskii: Przewalski's horse
    • Equus burchelli: Grant's zebra, Burchell's zebra, Chapman's zebra, quagga, other subspecies
    • Equus grevyi: Grevy's zebra
    • Equus heminnus: onagers of Asia and the Middle East
    • Equus zebra: mountain zebra of Southern Africa

    Horse History

    • 8,000 years ago: Horses were domesticated in the Eastern Hemisphere
    • 1493: Columbus brought horses to the West Indies
    • 1519: Cortes brought horses to North America
    • 1530: De Soto brought horses to North America
    • 1500s-1700s: Native Americans used horses for travel across the Western land
    • 1750-1890: Wild horses flourished in the American West until the end of the Civil War

    Current World Distribution

    • Total: ~59 million
    • US: ~16 million
    • South America: ~25 million
    • Asia: ~12 million
    • Australia: ~13 million
    • China: ~12 million

    Horse Breeds and Classification

    • Breeds are grouped with common ancestry and similar traits
    • Draft breeds (cold-blooded): Originating from Europe, characterized by large size, weight and calm temperament
    • Light breeds (warmbloods and hotbloods): Originating from Europe, Asia and NA, ranging in height and weight from 900-1400lbs, and are known for their ability for riding, driving and racing
    • Ponies: Originating from Europe, Asia, and NA, ponies are smaller than other breeds, and are known for their drafty, and nimble qualities. They come in various colors

    Horse Terminology

    • Foal: young horse < 1 year
    • Filly: female <3 years
    • Colt: male <3 years
    • Mare: mature female
    • Stallion: mature male
    • Gelding: castrated male

    Horse Reproduction and Puberty

    • Fillies enter puberty around 15 months
    • Pregnancy lasts approximately 11 months (~340 days)
    • Horses are seasonally polyestrous
    • Estrous cycle average duration: 21 days
    • Estrous behavior depends on low progesterone

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    ANSCI Exam 3 Horses PDF

    Description

    Explore the fascinating world of horses through this quiz that covers their taxonomy, species, and historical significance. Learn about the various breeds, their domestication, and how they influenced human history across continents. Test your knowledge on the distribution and evolution of horses over time.

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