Bovine behaviour Flashcards
Smell in cows
More sensitive than humans
Olfactory center in the brain is 20 X larger
Detect odor from 2 sites:
Nostrils
Traditional sense of smell
Vomeronasal organ (Jacobson’s Organ)
Vomeronasal organ (Jacobson’s Organ)
Located in the roof of the mouth
Must do the Flehmen response (facial expression) in order to draw scent into the mouth and up the vomeronasal duct
Nerves connect to the brain
Including hypothalamus.
Important in recognition of:
Reproductive changes in individuals
Particularly steroid hormones urine (pheromones)
Role in both males and females
Hearing in cows
Not as acute for detecting small sound frequency differences as humans but can hear a greater frequency range.
Cattle will often balk if there is noise coming from the area where you are moving them to
e.g. people, dogs, clanging chute noises
Taste in cows
Strong rasp-like tongues used for grazing
Have 2-3 X more taste buds than humans
Cattle tend to avoid strong and bitter flowers and prefer fresh over older feed
Other than for energy, salt and water, most animals lack specific “nutritional wisdom” as to what they require in their diet
Vision in cows
Can distinguish color well
Especially long wavelengths like yellow, orange and red
May balk at color changes as well as changes in contrast
Sensitive to sharp contrasts of light and dark
Grazing animals have a slit shaped pupil and a visual system that is designed to be most efficient at scanning at a distance while they are grazing
Eyes are positioned on the side of head so have 330 field of view
Blind spot directly behind their rear
When a group of animals move, they maintain visual contact with each other
Solid sided fences and alleyways leading to working areas are tolerated more than open sides which create alternating light and dark areas
Cattle vision when handling
If you enter the blind spot the cattle will stop so that they can turn and look at you.
Cattle have a natural tendency to want to see the handler
They want to know where you are at all times.
Be aware of the blind spot when you are in close quarters.
Cattle may stop moving if cannot see you
If you enter it, you may get kicked!
Tend to move toward a lighted area
Will balk at very bright light such as sunrise or sunset
Grazing behaviour in cows
Amount of time spent grazing depends on environmental conditions, quality and availability of feed, distance between water and feed.
Tend to graze most in early morning and evening
Prefer new green leaves
Avoid recently grazed areas
Avoid areas with fecal pats
Carry a long term memory of where the best grazing is and where poisonous plants are
Cattle moved to a totally new pasture take up to a year to adjust.
Herd oriented
Tend to graze together in small groups
Unless feed is scarce – then they scatter
Signs of limited forage in cows
How are the animals grouped?
Individuals - limited grazing
How long are they grazing?
Long time:
Normal if lactating or selectively grazing a field with different specie
Are they grazing at midday?
Forage is limited if hot sunny day
Resting behaviour in cows
Depends on environmental conditions, time spent ruminating and grazing, and on breed
Cows tend to rest and ruminate during the day and at night
So tend to graze in early morning and evening when they can see. Rest (lying down) during the day to avoid heat and predators.
How cows lie down and stand up
Fold the forelimbs then the hind quarters go down.
To get up the hind quarters go up first then the front legs
Opposite of how horses get up.
Signs of threat in bulls
Signs of threat includes
Lowering head, hind legs drawn forward, eyes and horns on object
Pawing
Snorting
Rubbing head, neck and horns (if present) on the ground
What happens if you fall down around a bull
After charging and knocking a person down bulls (and cows) may continue to toss the victim, kneel on them, or continually smash them with their foreheads. Bulls do not tend to “lose interest”
Fractures
Goring (from horns)
Bruising
Not very good prognosis for the victim….
Dairy breed
Dairy breeds like Jersey and Holstein bulls should be considered dangerous
Powerful, unpredictable, and tend not to be selected for gentle temperament
Cows behaviour depends on
Dairy heifers and cows tend to be much more docile than beef cows
Depends on:
Frequency of handling
Breeds that are often gentle:
Hereford
Simmental
HANDLER!!!
Why are beef cattle more aggressive
Beef cattle that are raised on the range without much human interaction tend to be more apprehensive and can become aggressive
Heredity “Mothering Ability”
Especially at time of calfing
NEVER position yourself between cow and calf
Always have calf closest to dam
Calves
Inquisitive creatures
Get up to observe strangers or new events
Stretching head or neck towards someone new approaching is the usual posture
Natural breeding of cows
Females tend to form a sexually active group
Stays in site of bull(s)
Mount one another (attracts bull)
The cow that stands to be mounted is likely to be in heat
Mucous vaginal discharge
Bull approaches cow/heifer
Chin rests on back
Licks and sniffs perineal region
Tries to mount
Immobility by female = acceptable
Often serves cow/heifer several times
Intromission is SHORT in cattle
Seconds
Parturition of cows
If space available
Cows/heifers separate from herd
Seek a sheltered site
Stand up more
Starts about 3 d. before calving
Dramatically increases in hours before calving
Lie in semi sternal recumbency to calve
First stage of labour in cows
Signs as parturition
Mucous discharge from vagina
Second stage of labour in cow
Breaking of water bag to expulsion of calf
Lasts 1-2 h
Cows usually calve lying down