Abortion Causes in the Goat
Abortion diseases:
An infection traveling through the maternal blood stream and making its way to the fetus (from the maternal blood stream). The most important of these (the "Big Three") are: Campylobacter (vibrio), Chlymdia and Toxoplasmosis.
The most distinguishing symptoms of each disease are highlighted in Red
CAMPYLOBACTER FETUS
aka: Vibrio, vibrionic abortion
SYMPTOMS
ESTRUS CYCLES LONG AND IRREGULAR
INFERTILITY (STERILITY)
ABORTION at 4 - 6 weeks before due
BABIES - WEAK OR STILLBORN
FETUS - BODILY CAVITIES FILLED WITH REDDISH FLUID
DIARRHEA (DOE)
RETAINED AFTERBIRTH
METRITIS (UTERINE INFECTION), PYOMETRA (PUS)
VAGINAL DISCHARGE
VULVA-VAGINITIS, PUSTULES, NODULES
This is a fairly common form of abortion in goats, but not so much as in sheep. The abortion will occur a little earlier than in Chlamydia. It is also to be suspected if there is difficulty in getting the doe to "settle" or conceive. Numerous attempts at breeding may be noticed. It is frequently accompanied by vulva-vaginitis and this may help to distinguish it from the breeding difficulties caused by an ovarian cyst (but, there are exceptions). It is about the only reproductive disease that may be accompanied by diarrhea.
Treatment consists of isolation of does which abort, antibiotics (but many strains are resistant) and vaccination of unaffected does. Aborting does develop an immunity which may be of rather short duration and it is generally recommended that an outbreak be followed up with routine vaccination. A preparation for sheep can be obtained without a prescription from most suppliers; from your veterinarian you may be able to obtain it in combination with Chlamydia psittaci. It would be our recommendation that laboratory confirmation of the diagnosis and discussion with your vet precede the use of either of these vaccines. Goats are not routinely vaccinated against these diseases unless there is a specific reason to do so.
CHLAMYDIAL ABORTION
aka: Enzootic abortion, kebbing abortion
SYMPTOMS
ABORTION, SOMETIMES FOLLOWED BY DEATH OF DOE
PREMATURE DELIVERY [21 days early]
MOTHER GOES OFF FEED
AFTERBIRTH COMMONLY RETAINED
COTYLEDONS NECROTIC [Dead, brownish]
BABIES WEAK OR STILLBORN
FETUS CLAY-COLORED, MUMMIFIED, WITH DISTENDED ABDOMEN
ASSOCIATED WITH TICKS, RODENTS OR BIRDS
This disease is one of the most common causes of abortion in goats. It is the one with the classic tendency to present you with dead or extremely weak babies almost exactly three weeks ahead of the scheduled due date. Anomalies of the cotyledons ("leathery" or necrotic [dead, rotten, brownish] with thickened spaces between) and fetus (mummified or covered with "clay" colored flaky material; enlarged lymph nodes) are characteristic. If the dead fetus is carried inside the doe for a length of time, there is an increased chance that the mother will die.
It is commonly transmitted by ticks, rodents and birds rather than sexual contact, but its incidence seems to increase when new members are brought into the herd. It must always be considered when you have an abortion epidemic. Treatment consists of segregating all aborting does and using LA200® (or other tetracycline) on ALL does and surviving kids. The good news is that those who abort will usually breed successfully the following year and deliver with no difficulty. However, if they are infected very late in pregnancy they may deliver normally this time and then abort next year.
There is a vaccine, available from your vet or Pipestone, which may be helpful. If you or others in your area have an outbreak, vaccination should certainly be considered. Some have found it very beneficial and for others the results have been somewhat disappointing. Most sources suggest that exposed does receive LA200® 2 weeks apart at mid-gestation. Consideration should also be given to the elimination of ticks, rodents and birds.
TOXOPLASMOSIS
SYMPTOMS
ABORTION AND PREMATURE DELIVERY
BABIES WEAK OR DEAD
ANOREXIA (LOSS OF APPETITE)
ATAXIA (INCOORDINATION) / PARALYSIS
CACHEXIA (WEAKNESS)
DEPRESSED AND/OR EXCITABILITY
DYSPNEA (SHORTNESS OF BREATH) AND COUGH
ENCEPHALITIS (BRAIN INFLAMMATION) AND C N S DYSFUNCTION
GASTROENTERITIS
ICTERUS (JAUNDICE)
TEMPERATURE - ABOVE NORMAL (NOT ALWAYS)
TREMBLES / TREMORS / MUSCLE CONTRACTIONS
WEIGHT LOSS
COTYLEDONS - WHITE SPOTS
CATS AND/OR RODENTS TRANSMIT
Toxoplasmosis is one of the most fascinating diseases that a livestock producer will ever encounter. It can lead to a delivery season which turns into a living nightmare as you watch one doe after another deliver weak and dead babies. Typically, if a doe has three kids, one will be stillborn, one will be small and very weak (and may or may not survive heroic attempts at rescue) and one will appear fairly normal. The disease is caused by a protozoa which lives in the blood which goes through several stages, at least one of which will usually be in the family cat which frequents the barn and uses the feed storage area for a bathroom. Getting rid of the disease in your goats may require the euthanasia of your favorite cat.
[In adult cats there may be no symptoms; if any there will be disturbances of the central nervous system. In kittens, there will be generalize acute illness with fever, respiratory signs, diarrhea and nervous signs.]
Another tragically interesting aspect is the wide variety of symptoms which can be exhibited by the doe. Some will appear perfectly healthy while others will be critically ill. Disturbances of the central nervous system (CNS) are the most typical. The doe may appear in coordinated or show paralysis which makes you think that perhaps she has suffered a stroke. She will commonly refuse to eat and develop severe digestive discomfort. She then may become more susceptible to other infections, such as worms or liver flukes.
Treatment is of limited value. However, it is our recommendation that you perform blood testing on all the adults in the herd. This may be fairly expensive, but at least you will be able to make critical decisions on the basis of factual data. Also, any cats which have access to the area should also be tested. The blood work will provide you with blood antibody levels, known as "titers." A zero reading indicates that the animal has probably not been exposed to the disease. Any titer level above 60 indicates a probable active disease state. Readings in the low range would be indicative of exposure with immunity possibly sufficient to prevent the disease. Of course, you should work in close conjunction with your vet in interpreting the results and also compare them with what you know about the fate of the offspring of the tested does. You would expect highest levels in those which had the worst reproductive results. The fetus and placenta can also be examined for active toxoplasmosis; cool (but do not freeze) them and transport to your vet for shipment to the diagnostic lab.
WARNING! This disease is transmissible to human handlers and can lead to abortion in pregnant females. If any members of your family are pregnant or could become pregnant and have been or may be exposed to toxoplasmosis, they should consult with their health care provider immediately. Additionally, unborn (human) babies can develop brain damage if the pregnant mother consumes undercooked or raw meat from an animal infected with toxoplasmosis. In fact, there is new evidence that more human cases result from the eating of contaminated meat than from cat feces. If you are unsure of the cause of any abortion in a farm animal and are pregnant, you should consult your veterinarian AND your doctor to see if testing is in order. It is possible to contract the disease from handling an infected fetus or placenta, from the feces of infected cats or rodents. The disease can also be transmitted to non-pregnant family members of either sex and we are definitely not qualified to discuss that situation; you should seek the advice of your doctor if exposed or feel that you have symptoms that may be related to the disease. In short, this is not a situation to be taken lightly.
Perhaps the most interesting aspect of toxoplasmosis is that it eventually just goes away. It is debatable whether treatment measures have any role in creating this scenario. This means that if you get rid of the offending cats and if Suzie Q survives the ordeal, she will probably return to full reproductive vigor.
Comments from personal experience: We experienced a toxoplasmosis epidemic in our herd a few years ago. The results were disastrous; a majority of the babies were born dead or extremely weak. We had the does all tested and they showed a wide range of antibody levels with some way above the "disease" level. The buck tested positive as well. My antibody level was below the disease level but indicative of significant exposure. We instituted a rigorous program of treatment which I can provide upon request. But there is no way of knowing it's actual benefits since there are many cases of complete recovery without treatment.
SALMONELLOSIS
SYMPTOMS
ABORTION UP TO 6 WEEK BEFORE TERM
DIARRHEA
TENESMUS (PULSATING ANUS)/ NERVOUS
TEMPERATURE - 105 AND ABOVE OR VARIABLE AND INTERMITTENT
WEIGHT LOSS
ANOREXIA, LIGHT
DEHYDRATION
DEPRESSED
Although Salmonella is usually thought of as a leading cause of diarrhea, certain forms of the organism can also lead to abortion. It can easily be spread by new animals brought onto the premises or from babies with diarrhea being in contact with pregnant adults. It can also be brought in by rodents and birds. From the symptoms above, it is obvious that the doe may show signs of serious illness, which may even result in death.
Treatment begins with isolation of any animals which show signs of the disease. Tetracyclines (LA200®) or sulfa drugs are of limited benefit. Survivors should breed successfully in subsequent years but as carriers they can infect newcomers to the herd, which will abort. Isolation and prompt treatment of babies with diarrhea which may be of the Salmonella type will go a long way in preventing this type of reproductive disease. Crowding and poor sanitation, especially of the babies, greatly increases the chances of a Salmonella infection.
ASPERGILLOSIS
SYMPTOMS
ABORTION
LABORED BREATHING
FETUS - GRAYISH-RED AREAS THAT RESEMBLE RINGWORM
COTYLEDONS - THICK, NECROTIC WITH YELLOW, CHEESY PLAQUES
Aspergillosis is a fungal infection that is usually associated with respiratory problems, especially in man. However, in rare instances this and other fungal organisms can cause abortions which are fairly hard to diagnose. The ringworm-like lesions on the fetus and/or afterbirth may be the only noticeable symptom. The only effective remedies can be obtained only from your veterinarian.
The best prevention is to keep goats in areas that have not previously housed poultry.
TRICHMONIASIS
1336
ABORTION
ESTRUS CYCLES LONG AND IRREGULAR WITH FAILURE TO CONCEIVE
UTERINE INFECTION WITH PYOMETRA (DISCHARGE)
Most typically a vaginal discharge at breeding will be the only sign. This is basically a disease of cattle. I can't recall ever hearing of a case in goats.
Q-FEVER
1331
Coxiella burnetti, a Rickettseal infection
SYMPTOMS
ABORTION
PNEUMONIA
EYE INFECTIONS
Fairly rare disease which can affect all species of livestock and man. In fact, people can become carriers and pass the disease to farm animals. Anyone with flu-like symptoms on a farm where Q-fever caused abortions are present should see their physician. Organisms probably transmitted in milk (less often via feces, afterbirth or meat). Diagnosis is quite difficult and treatment with tetracyclines may be unsuccessful.
BRUCELLOSIS (BANG'S DISEASE)
SYMPTOMS
INFERTILITY
ABORTION IN 4th MONTH WITH PROLONGED VAGINAL DISCHARGE AFTERWARDS
STILLBIRTH OR WEAK BABIES
RETAINED PLACENTA
MILK PRODUCTION FALLS
KERATITIS (INFLAMMATION OF CORNEA OF EYE); CONJUNCTIVITIS
BRONCHITIS
ARTHRITIS
Brucellosis is a "species specific" disease that can affect cattle, sheep and goats. It is of historical significance in being readily transmitted to people where it is known as "undulant fever" or "Malta fever" and was very common a century ago. Since then, rigid eradication programs have been very effective in nearly eliminating the disease from modern cattle. Brucella abortus in cattle, B. melitensis in goats and B. ovis in sheep are three very different diseases. It is quite rare in goats, where it is known as "Malta fever". Although the symptom is more common in rams, the organism can lead to orchitis (inflammation of the testicles) or epididymitis in billy goats. However, there may be no other symptoms except abortions.
Treatment consists of isolating the animal at once and discussing the situation with a qualified large animal vet. Culling may be the best option.
CAUTION:There have recently been a few cases of Brucella melitensis in Starr County, Texas. Goat raisers in that area can contact the Texas Animal Health Commission (or the USDA) for free testing to see if their animals may be carrying the disease and for other steps to take to assure the safety of their herd and handlers.
Vaccination Those interested in a new genetically engineered vaccine for Brucella melitensis for goats and humans can contact Brucellosis Research, NADC, P> O> Box 70, Ames IA 50010.
LEPTOSPIROSIS
SYMPTOMS
ABORTION
ANEMIA ANOREXIA, LIGHT (OFF FEED) PROSTRATION DYSPNEA (SHORTNESS OF BREATH) TEMPERATURE - 105 AND ABOVE HEMOGLOBINURIA (BLOODY OR CLEAR RED URINE)
ICTERUS (JAUNDICE) MILK PRODUCTION FALLS MILK - THICK, GRAY OR YELLOW, BLOODY WITH NO CHANGE IN UDDER
Leptospirosis is a very important disease in cattle; nearly all producers regularly vaccinate against it. It is less common in goats, but probably has not received the attention which it deserves. Some goat people have now included Leptospirosis in their vaccination routine. It can cause a generalized illness with bloody urine and abortions being the most notable signs.
Treatment is unsuccessful; vaccines are available and should be considered if the disease is found in the area. There is considerable evidence that it can be transmitted by wildlife (in addition to rodents), possibly deer. It can be transmitted to dogs and man.
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general infections where abortion can be a symptom
ANTHRAX
WOUNDS, ILLNESS FOLLOWS
MOSTLY LATE SUMMER TO FALL
EDEMA
CARDIOVASCULAR IRREGULARITIES
LABORED BREATHING
COLLAPSE
MUSCLE CONTRACTIONS, TREMBLING, STAGGERING
EXCITED, IRRITABLE FOLLOWED BY DEPRESSION
TEMPERATURE, 105 AND ABOVE
ABCESS, TONGUE
THROAT, SWELLING and LESIONS
RUMEN STASIS AND BLOAT
ABORTION
MILK PRODUCTION FALLS
SUDDEN DEATH
BLOOD, DARK , THICK, FAILS TO CLOT
BODILY OPENINGS, BLOODY DISCHARGE
RIGOR MORTIS ABSENT
Because of the rapid course of this disease, diagnosis almost always involves the observation of a dead animal. The characteristic finding is a bloated carcass with dark blood oozing from bodily opening and the lack of rigor mortis. (This is different from the small amount of normal-colored blood that many animals emit from the nostrils at death.) "Sub acute" cases may abort, but this will be accompanied by other symptoms which make it clear that the animal is extremely ill (high fever, refuses to eat, hemorrhages inside mouth, slobbering, weakness). In goats, there may be trembling, difficult breathing, and convulsions followed by death.
Whenever anthrax is suspected, one should not touch the carcass. Man is very susceptible to the disease. Your vet and/or local livestock authorities should be contacted as per local laws. Treatment should not be attempted.