Numbered Publications: VET
VET-36: Anaplasmosis in Beef Cattle
Michelle Arnold | Dec. 9, 2019 (New)
Anaplasmosis is a disease caused by Anaplasma marginale, an organism that invades cattle red blood cells (RBCs), resulting in severe anemia, weight loss, fever, abortion and death in adult cattle. Anaplasmosis is considered a "tick-borne" disease because ticks transmit the organism when feeding on cattle. However, spread of this disease can be by any method that moves fresh blood from infected to susceptible cattle. In addition to ticks, the Anaplasma organism may be spread by biting insects (mosquitoes, horse flies, stable flies) or using blood-contaminated tools such as dehorners, ear taggers, castration tools, and implant guns without disinfection between animals. A very common method of transmission is using the same hypodermic needle on multiple animals when administering vaccines to the herd. Transmission may also be from cow to calf during gestation.
VET-35: Forage-Related Cattle Disorders: Staggers (Tremorgenic Syndrome)
Michelle Arnold | Jul. 20, 2015 (New)
"Staggers" is an all-inclusive term for a group of nervous system disorders caused by indole-diterpenoid mycotoxins produced by various types of fungi on forages. These mycotoxins are collectively known as "tremorgens", and they may be found in several types of grasses at varying stages of maturity.
VET-34: Forage-Related Cattle Disorders: Ergotism
Michelle Arnold | Mar. 31, 2014 (New)
Ergotism and fescue toxicosis are clinically similar syndromes caused by consuming plants containing ergot alkaloids. The toxic effects and mechanisms of action are similar in both syndromes although the alkaloids are produced by different species of fungi. It grows on rye, wheat, barley, triticale, oats, and various grasses. Rye and triticale are more susceptible than other grains because they require a longer period of pollination. Grasses potentially infected include tall fescue, bluegrass, brome, canarygrass, quackgrass, timothy, wild barley, and annual and perennial ryegrass. Shallow cultivation, no-till farming, and lack of crop rotation increase the likelihood of infection of crops. Environmental conditions of a cool, wet spring followed by hot early summer temperatures are ideal for the fungus to grow.
VET-33: Colostrum Management for Dairy Calves
Michelle Arnold | Jan. 22, 2014 (New)
During gestation, the placenta of the cow effectively separates the blood of the fetus from that of the dam and prevents any transfer of protective immunity while in the uterus. Therefore, the calf is born completely dependent on the absorption of maternal antibodies from colostrum after birth. Colostrum is the milk produced from the mammary gland in the first 24 hours after birth. A calf's gastrointestinal tract is designed to temporarily allow the absorption of large molecules including antibodies from the small intestine, but only during the first 24 hours after birth. Although colostrum contains several different types of immunoglobulins, IgG accounts for roughly 85 percent of the total volume. IgG absorption is most efficient in the first four hours of life and declines rapidly after 12 hours of age. At 24 hours, the gut is completely closed and there is no further immunoglobulin absorption. These absorbed antibodies must be consumed in order to protect the calf from disease organisms until its own immune system becomes functional.
VET-32: Tapeworms in Horses
Sandra Collins, Harold Drudge, Gene Lyons, Sharon Tolliver | Apr. 15, 2006 (Minor Revision)
VET-1: Controlling Internal Parasites of the Horse
Bob Coleman, Harold Drudge, Gene Lyons, Sharon Tolliver, William Wise | Apr. 15, 2006 (Minor Revision)
VET-31: A Health Calendar for Spring-Calving Herds
Duane Miksch | Nov. 1, 1993 (New)
VET-30: Club Lamb Fungus Disease
Duane Miksch | May. 1, 1993 (New)
VET-28: Preventing and Treating Disease in Exhibition Market Animals
Duane Miksch | Aug. 1, 1990 (New)
VET-27: Chemical and Drug Residues in Livestock
Duane Miksch | Oct. 1, 1989 (New)
