Bovine petechial fever is a rickettsiosis of cattle caused by Ehrlichia (Cytoecetes) ondiri. The disease occurs in the highlands of Kenya and Tanzania at altitudes of 1,500 to 3,000 m, although it is considered likely to occur in neighboring countries with similar topography. Characteristically...
Anaphylaxis is an acute disease of often life threatening severity caused by an antigen-antibody (IgE) reaction. If severe it can result in anaphylactic shock.
Aetiology
Most commonly, severe anaphylactic reactions are seen in farm animals following the parenteral administration of a drug or...
Neutering removes the sexual urge for both male and female animals and prevents the production of unwanted offspring. It is carried out surgically. For females, removal of the uterus and both ovaries is done; and for the male, removal of the testicles. These procedures are irreversible...
Rabbits’ jumbo-sized ears serve at least two purposes. First, they function as air conditioners, helping the rabbit maintain its normal body temperature. Rabbits easily overheat as they cannot sweat. The ears contain large blood vessels very close to the surface of the skin. As the rabbit’s...
A male rabbit (buck) frequently thumps after it has mated with a female (doe), most likely to signal dominance to other bucks. Both bucks and does thump warnings to nearby rabbits if they sense danger is afoot or on the wing.
Free gas bloat is excessive accumulation of free gas in the dorsal sac of the rumen.
Aetiology
Any condition causing oesophageal obstruction or interference with normal eructation can result in accumulation of free gas in the rumen.
Common causes include lesions of the oesophageal groove...
Frothy bloat results from high protein levels in cattle grazing lush leguminous pasture and clover-rich grass.
Aetiology: Rumen fluid viscosity is raised, causing small bubbles to form and leading to a stable froth that cannot be eructated normally.
Signs: Rumen tympany develops over several...
Lateral deviation of the head is a common cause of dystocia in cows; the calves are often dead.
Clinical Presentation
Both fore feet are presented in the maternal pelvis (and possibly at the vulva). Occasionally, the cervix may not be fully dilated.
Differential Diagnosis
Farmers often...
The right forelimb is back in this calving cow.
Leg back is a common malposture in cattle obstetrics.
Aetiology
This is a malposture occurring during first-stage labour.
Clinical Presentation
The calf ’s head and one forefoot are presented at the vulva. Farmers will often apply...