MIDTERM Flashcards
they are polydactyl with 3 weight bearing toes
EOHIPPUS
these early equids has their lateral supporting toes are decreased in size while mid increase
MESOHIPPUS
mesohippus are also known as?
Middle horses
also known as the first grazing horse
MERYCHIPPUS
early equids that are Monodactyl (single hooves)
Pliohippus
What epoch does Pliohippus come from?
Pliocene Epoch
What epoch does Merrychippus come from?
Miocene Epoch
What epoch does Mesohippus come from?
Oligocene Epoch
What epoch does Eohippus come from?
Eocene Epoch
What are the two types of Modern Equids?
- Non Caballine Zebras & Asses
- Caballine
Scientific name of Grevy’s Zebra
Equus Grevyi
These type of zebra are the largest and has the narrowest stripes
Grevy’s Zebra
Scientific Name of Mountain Zebra
Equus Zebra
These type of zebra has thick stripes with thick spaces, they also have “V” like pattern at the back and unique for having a dewlap
Mountain Zebra
Scientific Name of plain zebra
Equus Burchelli
Type of zebra that is a Typical zebra with Wide vertical stripes and Thick horizontal stripes (rump)
Plain Zebra
Scientific name of Wild Asses
Equus Africanus
Asses where domestic Donkey is derived from
Nubian wild ass & Somali Wild ass
how many chromosomes does Przewalski horse have?
66 chromosome
Vertebral formula of a horse
C7, T18, L6, S5, Cd15-21
Vertebral formula of a donkey
C7, T18, L5, S5, Cd15-21
Scientific name of the Asses
Hemionies
Their Ears longer than horses’ but shorter than donkey
Asses
Scientific name of Mongolian Khulan
Equus Hemionus Hemionus
Mongolian Khulan is from?
North Mongolia
What are the 4 subspecies of Asses
- Mongolian Khulan
- Khur
- Kulan
- Persian Onager
scientific name of the Khur
Equus Hemionus Khur
scientific name of the Kulan
Equus Hemionus Kulan
scientific name of the Persian Onager
Equus Hemionus Onager
Where is Khur from
Thar deser, India
Where is Kulan from
Turkmenistan
Where is Persian Onager from?
Iran
Color of Donkey
- Buff gray to iron gray (winter)
- Black, white, or any shades of gray
T/F
Donkey have forelock
False
give atleast 1 Unique characteristic of a donkey
- no forelock
- no chestnut
- 5 Lumbar
Male donkey
Jack / Jackass
Female donkey
Jennet / Jenny
tallest donkey is called?
American Mammoth Jackstock
what cross are bred to produce a Mule
Jackass (Male donkey) X Mare (Fem Horse)
Why are Mule practical that horse?
- smooth movement under saddle
- Sure-footedness on mountain trails (that may be steep for horses)
Give reasons why mules are economical
- intelligent
- Time off when pregnant/tending young is not needed
- Tough, adaptive, resilient
- Strong (than horse) and fast
- More capable of sustained hard work
- Adapt to heat easily & work better in hot climates
What does a Poitevin sire & dam produce?
Heavy draft mules
Smaller Maltese & Indian Jackass produce?
Light or heavy
What cross is bred to produce a Hinny?
Stallion X Jenny
They are Smaller than mules and horse
Hinnies
Give unique feature of a hinny that makes you distinguish them
- Horselike head with longer ears
- Horse like tail and manes
Give 1 characteristic of a Hinny
- less valuable as workers
- harder to breed
horse of either sex below 1 year old
Foal
delivery of young horse
Foaling
Foal that is nursing
Suckling
foal that has been weaned
Weanling
a horse of either sex that is between one and two years old
Yearling
young female horse; usually up to 4yrs
Filly
mature female horse ; more than 4 yrs old
Mare
mature female horse used for breeding
Broodmare
Young male horse
Calf
Mature non castrated male horse
More than 4 yrs old
Stallion
Mature male horse used for breeding
Stud horse
Castrated horse at an early age
Gelding
Castrated horse at an advance age
Stag
it means the absence of one or both testicles (undescended testicles)
Cryptorchidism
stallion with only one testicle
Monorchid
no testicles at all
Bilateral cryptorchid
How is horse’s Height measured?
by hand and is measured at the height of the withers where the neck meets the back
A specialist in equine hoof care
farrier
What care does the farrier does to horse’s hooves?
- trimming and balancing of horses’ hooves
- placing of shoes on their hooves.
Farrier skills that fabricating, adapting, & adjusting metal shoes
blacksmith’s skills
farrier skill that involves knowledge of the anatomy & physiology of the lower limb
veterinarian’s skills
The two base pigment colors in horses
Black and Red
pigment causing color in mammals
Melanin
2 forms of Melanin in Horses
eumelanin (black)
pheomelanin (orange-red)
T/F
NOT ALL horses can make red pigment (but can be modified or hidden)
FALSE
–> ALL
T/F
Not all horses can make black pigment (but can be modified or hidden)
TRUE
tiny, basic units of inheritance in DNA that determine color, size, etc.
Genes
allele that produce black horse (w/out modifiers)
EE (homozygous dominant
allele that produce chestnut horse (w/out modifiers)
ee (homozygous recessive)
allele that produce black horse but can produce chestnut foal (w/out modifiers)
Ee (heterozygous)
allele of a black horse
EE or Ee +aa
Allele of a chestnut horse
ee, w/ any combination of A genes
it causes eumelanin (black) to be restricted to points (mane, tail, legs)
A — dominant
does not restrict eumelanin allows it to be fully expressed all over body
a — recessive
dominant to ”a” but recessive to ”A”
At
less concentrated color, which means lighter color
dilution
alleles for the presence of cream dilution gene
“Cr”
allele for the gene for absence of ability for cream dilution
“cr“
This means if one gene is present, it will show (manifest) one way
INCOMPLETE DOMINANT gene
color that undergone incomplete dominant gene and produces a lighten the base colors to colors such as palomino effect
Cream
a golden color, with a light colored mane and tail.
Palomino
allele for absence of Dun
“d”
These colors in horses may show a dark stripe down its back and across its shoulders.
dun or buckskin
The body color ranges from a pale yellow to a dirty canvas color
Dun
allele for the gene for absence of Champagne
“ch“
are born with pink skin and blue eyes
Champagne Foals
allele for the absence of Silver
“z“
only affects red pigment in manes and tails
Flaxen
Characterized by progressive silvering of colored hairs of the coat
Gray
Variants of Gray that is white and dark hairs evenly intermixed over most of body
Salt and Pepper or “steel” gray
variant of gray that is dark-colored horse with lighter rings of graying hairs
Dapple gray
Variant of gray that is fully white-haired horse w/ red hairs flecked throughout coat
Flea Bitten gray
variant of gray that is seen in a gray horse with a reddish or pinkish tinge to its coat
Rose gray
Resting Body temperature is meaured by?
rectal thermometer
RBT of an adult horse is
37.5 to 38.3oC (99 -101°F)
RBT of a foal
37.2 to 38.9oC (99 - 102oF)
Normal adult resting HR
28-44 bpm
Foal resting HR
90-120 bpm
Newborn heart rate (<36 hours old)
70-150 bpm
what location of the body can we get the jaw pulse?
- external maxillary artery crosses the lower border of the jaw
- inside of the jawbone just below the heavy muscles of the cheek
what location of the body can we get the radial pulse?
back of the knee
what location of the body can we get the Digital pulse?
below the fetlock at the inside of the ankle
Adult resting Respiratory Rate
10-20 bpm
Foal resting Respiratory Rate
30-40 bpm
Newborn Respiratory Rate
60-80 bpm
Normal color of mucous membrane
Pink
is the gut sounds of a horse digesting his feed
Borborygmus
when can we say that the gut sound is abnormal?
Absence of sounds or fast sounds
What sounds that indicates a normal gut sound?
- Absence of sounds or fast sounds are abnormal
- two long rolls, followed by several small gurgles
Type of head that is balanaced, forehead to nose line is straight, and common for racehorses
Noble head , straight profile
Type of head that has a characteristic of Arabs
dished face (concave)
type of head that has a characteristic of cold bloods and racehorse
Roman Nose (convex)
Type of head that has small nostrils and very short muzzle
Pig head
Type of ear position that means the horse is relaxed
sag ears
Part of the head that is flexible and mobile
Ears
Part of the head that is a bony protrusion located behind the ears
Poll
Type of ear position that means the horse is paying attention
pointed forward of swiveled toward the back
Type of ear position that means the horse is fearful and angry
laid back
Part of the head that may have unique markings
forehead
shallow and hollow ears means?
Young and Healthy
sunken hollow ears means?
old
Part of the head that has a tuft of hair
Forelock
Bright eyes means?
Healthy
Dull eyes means?
Illness
Horse’s muzzle is made up of?
- mouth
- lips
- nose
- nostrils
- chin
Part of the head that is under the muzzle, where the lower lip meet the upper jaw
chin groove
Part of the head where the jaw and windpipe intersect
throat latch
Long neck is good for?
show jumping
type of neck that is correct and most desired
straight neck
type of neck that creates an arch
swan neck
type of neck where the bottom part of the neck is convex and upper part is concave
Close coupled neck
part of the body that is the highest point at the base of the neck
Withers
part of the body that is from the withers to loin
Back
difference between short back and long back
short back: short distance betw. withers and the croup
- associated with athleticism and agility
long back: long distance between wither and croup
- assoc. with strength and carrying capacity
type of croup that slope 15 to 25 degrees to the ground
Normal
type of croup where slope is less than 15
Flat croup
type of croup where slope is 30-40
Sloping/Truncated
what is the use of the skirt in horse’s tail?
display
what happens when the chest is too bulky?
leads to difficulty of breathing
what happens when the chest is too narrow?
instability & difficulty in carrying weight
what happens when the chest is too broad?
impacts agility & responsiveness
why is the withers higher than the croup?
to maintain balance
what is the negative impact of the sloping or truncated croup?
limits the ability to use hindquarters for propulsion
used to denote a mane or tail which is white with a few black hairs giving it a silver cast.
silver
when applied to mane and/or tail, indicates a straw yellow or dirty white.
flax or flaxen
what does it mean when horse have sunken flank?
malnourished or dehydrated
white manes and tails have only white hairs.
true
what does deep girth do to horse?
make a horse more stable and powerful
these are hornlike growth in the leg
Chestnut
these are found at the back of the fetlocks.
ergots
excessive growth of the haircoat
Hirsutism
is a horse having but little hair in its tail.
Rat-tailed
indicates a predominance of yellow or white hairs.
Light
is a horse with a heavy, coarse tail.
Broom-tailed or Bang-tailed
means a darker ribbon which goes along the back from the mane to the tail. The line may be almost any color, although red and black are most common.
Line-back
implies darker patches, dull finish, or dark overcast.
Toasted