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Parasites on swine
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Lice and mange mites are two common external parasites found on swine. Mange and lice infestations are increasing as confinement rearing increases, particularly mange. The crowding of animals promotes easier transmission. Hog lice are nearly 1/4-inch long and large enough to be easily seen with the naked eye. They are often overlooked, however, because of the slate blue color which may resemble the skin of the hog. Lice are first noticed in small clumps inside the ears...
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Internal parasites include various types of internal worms that can naturally infect pigs due to oral ingestion of worm eggs from the pig's environment (pen floors, dirt lots, deep bedding, etc.). Once ingested, internal parasites go through several life-cycle changes as they mature. They compete with the pig for nutrients and may cause tissue damage. Pigs that are heavily infested with internal parasites grow slower and are less resistant to disease and stress. In some cases liver damage due...
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Swine internal parasites (worms) are estimated to cost 250 million dollars annually in the United States but they are not considered to be swine killers. Internal parasites devitalize pigs by robbing them of essential nutrients and injuring vital organs. Pigs heavily parasitized are more susceptible to diseases such as scours and pneumonia. The resulting diseases and unthriftiness are a major cause of economic loss. Swine producers should be aware of the common internal parasites of swine and...
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A microscopic worm may be the key to heart-friendly bacon. Geneticists have mixed DNA from the roundworm C. elegans and pigs to produce swine with significant amounts of omega-3 fatty acids the kind believed to stave off heart disease.
Researchers hope they can improve the technique in pork and do the same in chickens and cows. In the process, they also want to better understand human disease.
"We all can use more omega-3 in our diet," said Dr. Jing Kang, the Harvard Medical School...
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Jeff Tomberlin, a Texas A&M entomologist, is looking into the possibility that black soldier fly larvae, a.k.a. "grubs," could be used to turn livestock manure into high-protein feed. The concept itself has been proven practical for reducing poultry litter: The flies lay their eggs in the animal manure; the eggs hatch into larvae that eat the manure, growing into fat little creatures that are 40% or more protein. The chickens then eat the worm-like larvae with relish, says Tomberlin.
"No...
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On their own, large roundworms can inflict substantial harm on pig performance and a producer’s bottom line.
However, new research shows the negative effects of roundworms can go much further, actually reducing the ability of a pig’s immune system to fight viral and bacterial pathogens that cause diseases such as PRRS, swine influenza and ileitis – leaving today’s pigs more vulnerable than many producers and veterinarians realize.
Recent research has shown roundworms migrating within a...
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As if West Nile virus wasn’t bad enough, now U.S. health officials are on the lookout for another mosquito-borne disease, fearing it could become a permanent part of the American landscape if it entered the country.
Rift Valley fever, which originated in Africa, is the only disease at the top of both human health and agriculture lists of dangerous diseases.
The virus can kill people, with a near 1 percent mortality rate, making it deadlier than West Nile. But Rift Valley poses a greater...
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Mosquito bites on pigs will cost pork producers money this summer, a University of Nebraska swine specialist said.
Higher numbers of mosquitoes this summer means more bites on pigs and higher trim losses at packing plants, said Mike Brumm, Institute of Agriculture and Natural Resources swine specialist.
"The increased carcass trim will cost producers anywhere from $5 to $10 per pig," Brumm said. "If you raise pigs in curtain sided barns, you've seen pigs with more red welts. This is a...
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