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Parasites on swine
Swine performance is influenced by internal parasites, most dramatically in the young, growing pig. Parasites reside in the stomach and intestinal tract of the pig, causing irritation, impaction, indigestion and lack of appetite. Parasites cause loss of nutrients from feed consumed by competing with the host, and by causing poor digestion, gut ulceration and even blood loss. Even small numbers of the large roundworm Ascaris suum can depress feed intake and daily gain and cause a depression in gain:feed ratio. Some worm parasites may be found in the lungs, where they interfere with respiration. This in turn may result in pneumonia.
Even though internal parasites are commonly associated with pasture and dry lot husbandry, some parasites such as Isospora (neonatal infection) may be present in total confinement. Ascarid infections frequently are found in finishing barns with concrete floors. The reason for continuing parasitism in these units is that transmission is by infective eggs and oocysts, which are difficult to keep out of any environment. Therefore, appropriate deworming schedules and sanitation are mandatory for parasite prevention programs.
There are only a few target parasites of concern, while several dewormers can be used effectively. The dewormers are usually broad spectrum in that most if not all of the worm parasites are removed, and they are safe and easily administered.
Cysticercosis is an infection caused by the pork tapeworm, Taenia solium . This parasite is found worldwide and is common in countries where raw or undercooked pork is eaten. Although incidences of infection are extremely rare in Canadian and American swine herds, over 1,000 human cases of cysticercosis are reported annually in the United States. Many of these human cases result after travel outside Canada and the United States. Life Cycle...
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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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Amino acids and healthy nutrition solutions - Evonik Animal Nutrition
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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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Comparison of live yeast and zinc on the occurrence of pathogenic E. coli in weaned piglets
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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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