24241 - How we can protect the kids? Paul R. Earl Facultad...

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How we can protect the kids? Paul R. Earl Facultad de Ciencias Biológicas Universitdad Autónomia de Nuevo León San Nicolás, NL 66451 pearl@dsi.uanl.mx
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Over 35 years ago milkgoats were massively imported into Mexico due to the weird notion that they--without energy nor rain--could save the consumer price of milk. The traditional goat, cabrito al pastor-- roasted kid--is a meat type. Milk in Mexico is mostly imported powdered milk--leche en polvo importada. Most goats have a chronic toxemia and cannot make antibody to the infectious agent— Corynebacterium pseudo- tuberculosis.
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The toxin The goats do not respond well to phospholipase D, the toxin of their principal disease: caseous lymphadenitis. In many herds, all goats have this disease. The secondary threat to their lives in Mexico is winter-spring starvation due to the December reduction of the foliage of the matorral (short open woods) in northern Mexico. Starvation in the north is likely to occur when most of the goats are pregnant. By March, the matorral usually recovers new leaves, but it did not in 1984 or 1991, causing the death of very many goats and kids. However, every winter causes some starvation.
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The goats with caseous lymphadenitis, sometimes evinced by abcesses in the skin, produce antitoxin to phospholipase D, but they do not usually control the disease. Then their blood contains a mixture of antitoxin and the toxin continuously produced by the coryne-bacteria. The bacterial cause of caseous lymphadenitis is grampositive penicillin-sensitive Corynebacterium pseudotuberculosis.
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Immune tolerance The fetuses are exposed to the toxin, phospholipase D, and can become tolerized. Immune tolerance of the fetus is caused by the circulation of toxin in the mother’s blood. This can mean that the cabrito is born with immune tolerance . The intoxicated but not infected cabrito can become immediately infected and die. Sometimes, tiny abcesses can be felt in the neck of cabritos. These "bolcitos" are inflammed lymph glands.
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Many animals including man receive antibodies from their mother’s colostrum,
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24241 - How we can protect the kids? Paul R. Earl Facultad...

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