Top Banner
CAUSES OF DAMAGE TO DONKEYS ARISING FROM THEIR WORK AND HOW THEY ARE MANAGED ! DANGER FOR DONKEYS
45
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: Danger for donkeys

CAUSES OF DAMAGE TO DONKEYSARISING FROM

THEIR WORK AND HOW THEY ARE

MANAGED

!

DANGER FOR DONKEYS

Page 2: Danger for donkeys

PARTICULAR AREAS OF CONCERN ARE -

wheeled vehiclesgeneral hitching for tractionerroneous beliefs

Page 3: Danger for donkeys

!DANGER FOR DONKEYS !

DIFFICULT TO STOP FORWARD MOVEMENT OF

CART

Page 4: Danger for donkeys

IF THERE ARE WHEELS, NO MATTER HOW MANY:

Pulling animals must have some way of stopping the forward movement of the vehicle, even if it has brakes,

by means of a breech strap

Or, going downhill, the vehicle could run into the back of the animal.

Page 5: Danger for donkeys

Generally,this is absent

A spare tyre, but no brakes ...

Page 6: Danger for donkeys

!DANGER FOR DONKEYS !

CART TILTS BALANCE OF LOAD ONTO (OR OFF)

DONKEYS

Page 7: Danger for donkeys

TWO-WHEEL CARTSPRESENT THE MOST PROBLEMS.HITCHING METHODS MUST TAKE CARE OF:

Balance of weight over wheels;Placement of weight on animal;

Page 8: Danger for donkeys

WE ALL KNOW THIS ONE -

Load too far back can be pretty obvious.

But what about load too far forward ?

Page 9: Danger for donkeys

BECAUSE LOADING IS ALWAYS DONE AFTER ANIMALS ARE HITCHED

Page 10: Danger for donkeys

The shaft (disselboom) of a cart acts as a lever, so that the weight is greatest at its end.

SO HOW IS THIS WEIGHT PUT ON THE ANIMAL/S ?

Page 11: Danger for donkeys

!DANGER FOR DONKEYS !

VERTICAL WEIGHT OF UNBALANCED CART TRANSFERRED

TO NECKS (NOT WITHERS)

AND ENHANCED BY LEVER EFFECT

Page 12: Danger for donkeys
Page 13: Danger for donkeys

A simple solution is to use TWO common breastbandharnesses, front and back.

HOWEVER: hitching and adjustment must make sure that any pressures are felt by the donkey in the right place.

(NOTE that an animal pushes on a harness to pull what is behind.)

Page 14: Danger for donkeys

FOR HORSES, a neckstrap has generally been used, to put the weight on the animal’s withers.

Page 15: Danger for donkeys

AND IF DONKEYS ARE REGARDED AS ‘SMALL HORSES’, this is what gets recommended and universally used

Page 16: Danger for donkeys

BUT HORSES AND DONKEYS HAVE DIFFERENT SHAPES.

Especially look at angle of neck and back related to withers.

(Top of scapula corresponds to withers. This diagram puts horse & donkey scapula in same place.)

Page 17: Danger for donkeys

PRETTY EASY TO CHECK WHERE THE WEIGHT HAS LANDED:Just put a hand under each strap.

Usually the neckstrap is found to take it

Should be over pelvis

NOT in middle of back !

Some can be here

!

Page 18: Danger for donkeys

!DANGER FOR DONKEYS !

DONKEYS SHOULD CAN CHOKEOR BE WOUNDED WHEN PULLING

A CART

Page 19: Danger for donkeys

WHERE BALANCE IS NOT INVOLVED,

But PULLING (i.e. pushing on a harness)The variable felt by a pulling animal is resistance, e.g. with

WAGONS: loadweight felt by animals only on gradients, otherwise wheel bearings determine the amount of resistance.

SLEDS & POLES: roughness of surface.

PLOUGHS: make of implement, soil texture, depth of cut.

Page 20: Danger for donkeys

BUT MORE CAN HAPPEN IF A NECKSTRAP IS USED. INSTEAD OF PUSHING ON A HARNESS TO PULL THE CART,

THE DONKEY OFTEN ENDS UP PUSHING ON THE TRANSVERSE POLE

There are mechanical reasons for what can often be observed.

In addition, if the load on the cart lifts the disselboom, the transverse pole will also be lifted, sometimes to just under the donkey’s jaw.

Page 21: Danger for donkeys

As with these onesNote loose traces

Page 22: Danger for donkeys

Even a yoke (bad enough) might be better,as long enough pegscould be pushed by donkey shoulder joint, as with a collar harness

Page 23: Danger for donkeys

Or the ‘hame harness’ developed at Fort Hare as being particularly suitable for donkeys.

HOWEVER, very tricky to make, adjust and get right, so not recommended.

Page 24: Danger for donkeys

In South Africa and Zimbabwe, the single-shaft cart is the most common.As it requires more than one animal to pull it, the distribution of forces between the animals needs to be considered.

Page 25: Danger for donkeys

!DANGER FOR DONKEYS !

DONKEYS CAN WORKAGAINST EACH OTHER

WHEN PULLING AND TURNING A CART

Page 26: Danger for donkeys

SHARING THE PULLING AS WELL AS THE LOAD REDUCES EFFICIENCY

But especially if it is done wrongly

Crowding makes movement difficult for the animals.

Page 27: Danger for donkeys

BUT IT NEED NOT BE SO !

Page 28: Danger for donkeys

SOLUTIONS NEED NOT INVOLVE NEW TECHNOLOGIES OR

UNFAMILIAR TECHNIQUES

Page 29: Danger for donkeys
Page 30: Danger for donkeys

Some loss of efficiency is always involved, but tandem is easier and safer for animals, and easier for humans to manage.

Weight of unbalanced cart, however, can only be taken by those animals directly in front of the cart.

Page 31: Danger for donkeys

One animal between two shafts is much more efficient, especially if hitching is improved.

And additions are easy

Page 32: Danger for donkeys

There is also TURNING to be considered.

Again, there is no sense in making it difficult for animals and reducing their efficiency. This is why swingles and eveners should

always be used.

Animals should not exercise torque through the cart itself,but through a swivel point.

Page 33: Danger for donkeys

!DANGER FOR DONKEYS !

Thus many hitching problems for donkeys have their origins in:

VEHICLE DESIGN (especially carts)

IGNORING THEIR DIFFERENCEfrom horses and/or oxen (thus management)

Page 34: Danger for donkeys

Also a management issue, HARNESSING plays a minor role, but can give problems of its own through:

Poor fitPoor constructionPoor materials.

Page 35: Danger for donkeys

POOR FIT can result in:

Pressure on the wrong place

Material moves against skin, not with it.SO adjustability is essential.

!

Page 36: Danger for donkeys

POOR CONSTRUCTIONSo that:

!

Angles and levels change too much in use.

Twisting at joins.Non-adjustable to

individual donkeys.Two backstraps seem to help, also rings used at ‘right angle’ joins so that angle can adjust and the straps can lie flat.

Page 37: Danger for donkeys

POOR MATERIALSSo that: !

Edges cut flesh.Do not stretch with skin

and muscle, but against them.Do not absorb sweat and

other moistureBreastband folds into

narrow cutting rope

Page 38: Danger for donkeys

ALSO - because donkeys are seen as ‘small (& inferior) horses’

BRIDLES AND BITS have become widely adopted

Although not really needed by donkeys, who respond better to voice and gesture.In West Africa, such things are rarely seen.

!

Page 39: Danger for donkeys

Aside from being unnecessary, bits are difficult for poor people to acquire, and eventually they break.

So they are mended and contrived with WIRE or CHAIN

It also seems to be widely believed that bits are not so much for guiding the animal but for helping the driver to remain stable on the vehicle, holding and pulling as tightly as possible.So wounding easily results.

BLINKERS are not only unnecessary on donkeys, but are often uselessly placed.Besides, donkeys may need to see hazards to the sides. They will respond appropriately.

!

Page 40: Danger for donkeys

OTHER MANAGEMENT PROBLEMS:IdentificationParasite treatmentsContinuing use when injured or

wounded.Expense of veterinary treatment

and remedies.Freedom from fences, especially

at night.Angry neighbours, who make

animals suffer in place of owners.

Page 41: Danger for donkeys

IDENTIFICATIONThis is important to owners in areas of high incidence of donkey theft – thieves sell in a market where questions are not asked because the value of the animal is so low.

TRADITIONAL STRATEGIES ARE –

Branding

Nicking or cropping of ears

This can eventually result invery little ear remaining.

Page 42: Danger for donkeys

PARASITE TREATMENTSWhere cattle densities are high, ticks are more of a problem, and where donkey densities high, worms are.

People often know of these problems, but do not know how to deal with them in donkeys. Donkeys may get dipped with cattle.

Some examples of TRADITIONAL STRATEGIES :Ticks: - cut ears

- powder from batteries- used motor oil

Worms: - infusion of aloe and potassium permanganate

- veterinary not suitable for equids

(And I have lists of ‘traditional remedies’ for all sorts of things, many of which seem to use cow dung.)

!

Page 43: Danger for donkeys

!DANGER FOR DONKEYS !

THE TERRIBLE MYTHS THAT HAVE ARISEN

CONCERNING DONKEYSIn South Africa, historical research has uncovered the fact that it is often cattle-owners who are responsible for these, not wanting the grazing competition that they

imagine donkeys pose.

Page 44: Danger for donkeys

A CATEGORIZATION OF THE BELIEFS

Donkeys and people: Donkeys kick and bite, they are dangerous: they tend to kick people to death.

Donkeys are disease-ridden: they can infect the people who handle them.

Donkeys are inedible, except by lions, so they attract lions, which will then also eat people.

Donkeys smell bad.

Farmers want cattle not donkeys; donkeys are only for the lowest orders of society.

Donkeys have no owners or names.

Donkeys are non-productive; they are expendable.

Donkeys cause road accidents.

Donkeys are stupid and stubborn.

Donkeys won’t work in the rain .

Donkeys need shoes on their feet.

Donkeys and environments: Donkey manure is poisonous to plants.

Donkey urine burns the soil .

Donkeys destroy trees and the environment generally , causing erosion.

Donkeys tear grass out of the ground .

Donkeys graze 24 hours out of 24 and thus consume more than cattle.

Donkeys and other animals: Donkeys poison the ground and kill pastures.

Donkeys eat more than cattle.

Donkeys eat more than goats do .

Particularly feral donkey impair subsistence goat keeping.

Donkeys waste fodder .

Donkey have a higher impact on the remaining vegetation .

There are too many donkeys.

But also: Donkeys never get sick..

Donkeys never die

NONE OF THE STATEMENTS BELOW HAVE ANY BASIS IN FACT AND ARE NOT SUPPORTED BY RESEARCH OF ANY KIND.

Page 45: Danger for donkeys

THANK YOU ! AND PLEASE FEEL FREE TO CONTACT ME

(PREFERABLY BY E-MAIL) ANY TIME, AND EVEN BETTER IF YOU CAN VISIT.