Burdizzo is a castration device which employs a large clamp designed to break the blood vessels leading into the testicles. Once the blood supply to the testicles is lost, testicular necrosis occurs, and the testicles shrink, soften, and eventually deteriorate completely. When the device is used the operator crushes the spermatic cords one at a time, leaving a space in between in order to maintain an interruption of blood-flow to the scrotum.
The Burdizzo has the advantage of elastrator rings in that it is non-invasive and causes no bleeding. Unlike elastrator rings it can be used on older animals.
The burdizzo is used primarily on farm animals such as cattle and sheep.
Cytauxzoon felis in erythrocytes
Cytauxzoonosis is parasite disease caused by parasitic protozoa Cytauxzoon felis and it was first reported in the USA in 1976. This genus was originally described in African grey duiker (Sylvicapra grimmia), but is now known to be common in felids including the domestic cat.
The domestic cat (Felis catus) has been considered an aberrant or dead-end host given the acute and fatal course of disease; however, there are reports of domestic cats surviving natural infection with and without treatment. The bobcat (Lynx rufus) is the natural host, typically experiencing subclinical infection and maintaining chronic parasitemia. Cytauxzoon felis infection has been reported in several other wild felids, such as cougars and panthers, in the absence of overt disease; however, a few lions and tigers have been reported to succumb to illness.
The parasites are transmitted by tick bite. After a cat or other host is bitten by an infected tick the parasites infect mononuclear phagocytes. Within these they undergo asexual reproduction (schizonts). As these leukocytes become engorged with schizonts, they line the lumens of veins and may causing obstruction of blood flow. The schizonts develop into merozoites which eventually cause host cell rupture and enter the blood. These intravascular merozoites infect variable numbers of erythrocytes.
Tsavo the lion receives treatment to remove orange size tumor – © AP
Assistant professor of radiation oncology Dr. Nathan Lee prepares an African lion named Tsavo for cancer treatment at the University of Tennessee’s Veterinary Medical Center in Knoxville, Tenn. The 11-year-old big cat is undergoing radiation treatment for a large tumor near its mouth. This was the fourth, and last, of Tsavo’s radiation treatments. At his first visit, the tumor measured 10 centimeters — about the size of an orange. At this one, it measured about 6 centimeters, smaller than a lime. With any luck, the radiation has killed the cancer’s DNA so that the tumor will continue to shrink over the next four weeks. If not, Tsavo will have surgery to remove it.
Trichobezoars found in cattle rumen
Trichobezoar is rounded mass of felted hair distending and partially obstructing rumen or abomasum. It can be found in younger cattle, and very rare in older cattle.