Feed additives for swine: Fact sheets – carcass modifiers, carbohydrate-degrading enzymes and proteases, and anthelmintics

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dc.contributor.author Jacela, Jay Y.
dc.contributor.author DeRouchey, Joel M.
dc.contributor.author Tokach, Michael D.
dc.contributor.author Goodland, Robert D.
dc.contributor.author Nelssen, Jim L.
dc.contributor.author Renter, David G.
dc.contributor.author Dritz, Steven S.
dc.date.accessioned 2012-04-06T20:35:04Z
dc.date.available 2012-04-06T20:35:04Z
dc.date.issued 2012-04-06
dc.identifier.uri http://hdl.handle.net/2097/13587
dc.description.abstract There is increasing consumer demand for leaner and healthier pork products. Improvements in genetics, new technologies, and increased understanding of nutrition have become instrumental in helping producers meet this demand. Continued research also has led to the development of products that can be included in swine diets as carcass modifiers. A dietary carcass modifier is broadly defined as any component of the diet that alters the resulting carcass composition of pigs. Generally, the mechanism of action of carcass modifiers is aimed at increasing protein and muscle deposition while reducing fat deposition. These products vary in the mechanisms by which they modify carcass quality. In addition, not all carcass modifiers are approved for use in pig diets, for public-health reasons. Understanding the modes of action and differences between these products is important for safe and effective use.Swine diets are composed mostly of plant-based ingredients. Nutrients contained in these feedstuffs need to be broken down by the pig into simpler forms that will be used to support maintenance, growth, and reproduction. This poses a problem, because, unlike ruminants, pigs do not have the ability to efficiently digest plant components that have relatively high fiber content. Pigs lack specific enzymes needed to break down fiber. Supplementing swine diets with exogenous carbohydrate-degrading enzymes that break down fiber has become increasingly popular to potentially improve availability of nutrients from ingredients with high fiber content. Parasite control, in addition to control of viruses and bacteria, must be part of a comprehensive herd-health program in every swine production system. Gastrointestinal worm infections may result in significant economic losses. Signs of infection are general and not readily apparent, since worm infections rarely cause elevated mortality levels. Some worms commonly found in pigs are roundworms (Ascaris suum), nodular worms (Oesophagostomum species), intestinal threadworms (Strongyloides ransomi), whipworms (Trichuris suis), kidney worms (Stephanurus dentatus), and lungworms (Metastrongylus species). Anthelmintics or “dewormers” are chemical substances that can be added to pig diets to control parasitic worms. en_US
dc.rights Permission to archive granted by the Publications Manager of the American Association of Swine Veterinarians, April 14, 2011. en_US
dc.subject Swine en_US
dc.subject Carcass modifiers en_US
dc.subject Proteases en_US
dc.subject Anthelmintics en_US
dc.subject Carbohydrate-degrading enzymes en_US
dc.title Feed additives for swine: Fact sheets – carcass modifiers, carbohydrate-degrading enzymes and proteases, and anthelmintics en_US
dc.type Article (publisher version) en_US
dc.date.published 2009 en_US
dc.citation.epage 332 en_US
dc.citation.issue 6 en_US
dc.citation.jtitle Journal of Swine Health and Production en_US
dc.citation.spage 325 en_US
dc.citation.volume 17 en_US
dc.contributor.authoreid jderouch en_US
dc.contributor.authoreid mtokach en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid jnelssen en_US
dc.contributor.authoreid drenter en_US
dc.contributor.authoreid dritz en_US

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