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Separate fact sheets.qxpCARE OF ORPHANED AND REJECTED FOALS
A foal may be orphaned because of its dam’s death, rejected due to antagonistic behaviour orundernourished because of an inadequate milk supply. Alternative means of maintenance must be founduntil it is at least five months of age. Always be guided by your Vet or suitably experienced person.
Finding a nurse mare has many advantages, but they are rarely available. A mare that has just lost herfoal is ideal. Success depends on a number of variables affecting the mare-to-foal relationship, including: Mares that have had a stillborn foal or have not been suckled are less likely to accept.
The longer the period between the death of the mare’s foal and the introduction of theorphan foal, the less the chance of success. After two to three days of not being suckledthe mare’s milk may dry up.
If the size discrepancy between mare and foal is great, the chance of acceptance is less.
If the foal has never suckled, it gradually loses the instinct.
A mare’s mothering instinct varies between individuals. Some mares show extremehostility at first but, once they have accepted a foal, they can make the best mothers.
There are a number of ways to help avoid or overcome rejection of a foster foal: Move the mare to an alternative stable from one she might associate with her dead foal. The afterbirth and faeces or hide from a dead foal should be smeared over the orphanfoal before presenting it to the mare.
Place a strong smell over the mare’s nostrils, e.g. ‘Vick’ vapour rub. Also place this onthe foal, especially over hindquarters, head and neck. Renew at frequent intervals. Put the foal to the mare when it is hungry, i.e. every 3 hours. Introduce the mare to thefoal when she has a full udder. Restraints such as chemical tranquillizers or hobbles can be used. The need to userestraints should diminish at each subsequent meeting.
Observe the mare and foal when first left together, some mares and foals are best kept separated by apartition, this will allow the sight and smell of each other, but will protect the foal. If unsuccessful on thefirst encounter re-introduce after a short period of time, as success may be achieved after further attempts.
If the mare is still showing an antagonistic response after ten to twelve hours then the chances of successare poor.
Colostrum must be given within the first twelve hours of life; the first feed should be within two to fourhours of birth. The recommended amount is 250ml every hour for the first six hours, making a total of 1.5litres. In a case of rejection of the foal, obtaining the colostrum from the mother would be preferable, or itcould be taken from another mare within two days of giving birth. A healthy mare should have enough for250ml to be taken off after her own foal has suckled. Clean hands and the mare's udder before milkingand sterilise all utensils. Colostrum from a cow is not ideal, although if fed in large quantities it is betterthan none. Collect colostrum and freeze at -15 to -20°C. Store in 250ml batches. When required defrostslowly in hot water until it reaches 38°C.
If the foal has received no colostrum, then plasma must be administered intravenously or by stomach tubeduring the first twelve hours of life. Plasma (Hypermune) is available from Veterinary Immunogenics Ltd.
NB: Should only be administered by a Vet or suitably experienced person.
If a mare is not producing enough milk for her foal, her diet can be supplemented while she is in lactation.
To try to increase milk production, the following methods may be successful: An injection of oxytocin, 0.5 to 1.0ml to stimulate the milk flow. Should only be administered by a Vet or suitably experienced person.
Feed lucerne (alfalfa), or allow to graze on lush, green grass.
There may be no alternative but to hand rear. The following points should be considered: Personnel. Hand-rearing a foal is neither easy nor cheap, and those involved should
be prepared to commit their time and resources. Experienced, conscientious personnel
Companions. A foal can develop poor behavioural characteristics if hand-reared without
other animal contact. Sheep and goats make good companions, but the foal should also
be allowed to see other equines. It can be joined by a quiet pony or donkey. This
companion will act as a role model.
Exercise. Make sure that the foal gets regular exercise, especially as it gets older and
stronger. As milk contains very little vitamin D, the foal should be allowed outside
regularly in the sunlight. Donkeys exposed to sunlight for at least three hours a day can
produce their own vitamin D, which is essential for proper bone development.
Environment. The foal should be kept in a warm, dry place, and sheltered from the
wind. A clean loose box with clean bedding is ideal. The box should have been empty
for two or three weeks before housing the foal and there should be no incidence of
enteric disease associated with the area.
Hygiene. The box and all equipment used should be cleaned, disinfected and/or
sterilised. All personnel who enter the box should take the necessary hygiene
precautions, particularly in the first 72 hours.
The foal can be given covering antibiotics for the first few days if desired; although this is a matter ofpreference and is not generally advocated in veterinary medicine.
This is time-consuming, but it is preferable to bucket feeding or intubation. It could be used in thetransitional period before a foal is trained to drink from a bucket. Lambs’ teats are the closest in shapeand pliancy to those of a donkey mare. If the foal rejects the teat, place an index finger in its mouth and, if it does not suck, move the finger against the roof of the mouth. Slowly replace the index finger with theteat once sucking begins. Be patient. Keep the bottle in an upright position.
This is less time-consuming once the foal has been trained, but it is much harder to introduce than thebottle. It is usually best started when the foal is two weeks or older. Milk should be offered ad lib in awide, shallow bucket placed at head height. It should be replenished twice daily, and the bucket cleanedthoroughly. To train, place your fingers into the foal’s mouth and, as it begins to suck, slowly lower yourhand into the bucket of milk. It may be necessary to push the foal’s head down to show it the bucket. Itmay take a whole day for a foal to learn to drink from a bucket. Some foals do not take to bucket feedingat all but may happily drink from a lamb feeder.
(tube through nose to stomach) – Consult with your Veterinary surgeon Protocol for hand rearing
Warm milk to 38°C for initial feeds, gradually reducing to air temperature over the first week. Changesshould always be made slowly over 24 to 48 hours. A 10kg foal requires 30kcal/kg (125kJ/kg) per day.
A sick or premature foal requires 36kcal/kg (150kJ/kg) per day.
The recommended volume of milk for a healthy foal is 100ml/kg body weight per day. For a 10kg foal thismeans 1 litre of milk a day, i.e. 10% of its body weight.
A foal naturally sucks from its mother about seven times a day. Ideally it should be fed at two or threehourly intervals, although during the first week it is preferable to feed every one to two hours. If the foal issick, it may be unable to tolerate more than 50 to 100ml every hour, so more intensive rearing is required.
As it improves this volume can gradually increase to 200ml an hour.
Day 1 & 2:
Feed 100 -120ml every two hours (10-15% of body weight) - ten to twelve feeds per day.
Day 3 to 7:
Increase the volume of each feed to 150 - 200ml (25% of body weight). Reduce the number of feeds to about eight a day, feeding every two or three hours. Milk-based pellets can be offered from one week old. When eating sufficient, these should be substitutedwith a grain-based feed.
Weeks 2 & 3:
Give 300 - 350ml at each feed, reduce to six feeds a day on a four hourly basis. Allow access to freshwater and salt, and consider training to bucket feed. Supply good quality grains and a limited quantity ofgood quality hay to start the foal weaning. Creep feed of 18% protein is recommended.
Feed 500ml five times a day. Do not wean off milk until eating adequate dry food. The changeovershould be gradual to allow the digestive enzymes to adapt. Week 8 to 12:
Weaning can be progressed during this time. Give one litre of feed, four times daily at eight weeks, thenthree feeds a day at twelve weeks. The foal may still be taking one to two litres of milk a day. A hand-reared foal should be fully weaned by five months of age. Types of milk
This is obviously the best option for the foal, but is not always readily available. Milking a mare is verytime-consuming.
Cow's or goat's milk
This is much easier to obtain but not similar in composition. It contains higher total solids, fat and proteinbut is considerably lower in sugars. The need to mix powders is avoided, but it can be expensive,particularly with regard to goat's milk. Cow's milk can be made to resemble mare's milk more closely byadding one teaspoon of honey to a pint of 2% fat milk. Jersey milk must not be used due to its high fatcontent. Goat's milk seems very palatable. Goat's milk is considered to be good foster milk as the fatparticles are smaller than in cow's milk and so it is more easily digested. Cow’s milk may contain a surprising number of bacteria so it is advisable to pasteurise it by heating to70°C for 15 seconds. The milk should then be cooled and dextrose can be added before feeding to the foal.
300ml cow's milk 150ml lime water (50g hydrated garden lime in 10 litres of water - leave overnight to settle, and then pouroff limewater from sediment). 20g of dextrose/lactose/molasses/honey/brown sugar.
The ideal formulation contains 15% fat, 22% crude protein and less than 0.5% fibre.
Calf milk replacers are not recommended. They are a poor source of high quality protein and oftencontain antibiotics. There are suggested formulae for calf milk replacers (Denkavit) without antibiotics.
Human formulae should be avoided, as they are not well tolerated by the foal’s gastrointestinal tract.
However, there is experience in developing countries of human milk being used with no reportedproblems.
Poor milk replacers can cause stunted growth. It should also be noted that following the manufacturer’sguidelines may cause dehydration and constipation. It may be best to use 12.5% solution of replacer,giving 10% of the foal’s body weight and slowly increasing by day 10 to 20% body weight.
There are many brands of artificial milk for foals. Some are listed here: Aintree foal milk replacer - they will send emergency supplies
Battle, Haywards & Bower Ltd Tel: 01522 529206 Fax: 01522 538960 Email: email@example.com Mare’s milk replacer
Baileys Horse Tel: 01371 850247 Email: firstname.lastname@example.org Mare's Match® Foal Milk Replacer
Land O’Lakes inc. Minnesota www.landolakesinc.com Grow-N-Glow Foal
Merrick’s Inc. WI email@example.com Foal-Gro
Grober Nutrition, Canada & USA firstname.lastname@example.org Diarrhoea - prevention
A good quality milk replacer with 22% crude protein should be chosen.
Milk left to stand allows growth of bacteria. Only use fresh milk.
Shop-bought milk can contain quite high levels of bacteria.
Sudden diet changes can upset the digestive enzymes. Changes should always be made slowly.
Treatment of diarrhoea
The milk substitute should be withdrawn and replaced with a solution of 50g glucose in 500ml warm,boiled water for one or two days. The return to milk should be gradual, alternating with the solution. The number of feeds per day should be increased with the same total daily consumption. Considerationshould be given to supplementing with lactobacillus paste during dietary changes.
Intolerance to the milk substitute causes colic, diarrhoea and/or bloat. This could also indicategastroduodenal ulceration, so sucralfate, (Antepsin suspension) should be administered as routine.
Decreasing the volumes or increasing the frequency can be tried, or a change to an alternative source.
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