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Effect of increasing concentration of ergot alkaloids in the diet of feedlot cattle: performance, welfare, and health parameters.
Sarich, Jenna M; Stanford, Kim; Schwartzkopf-Genswein, Karen S; McAllister, Tim A; Blakley, Barry R; Penner, Gregory B; Ribeiro, Gabriel O.
Afiliación
  • Sarich JM; Department of Animal Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5A8.
  • Stanford K; Department of Biological Sciences, Faculty of Arts and Science, University of Lethbridge, Lethbridge, Alberta, Canada T1K 3M4.
  • Schwartzkopf-Genswein KS; Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, Alberta, Canada T1J 4B1.
  • McAllister TA; Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, Alberta, Canada T1J 4B1.
  • Blakley BR; Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5B4.
  • Penner GB; Department of Animal Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5A8.
  • Ribeiro GO; Department of Animal Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5A8.
J Anim Sci ; 1012023 Jan 03.
Article en En | MEDLINE | ID: mdl-37638650
Ergot alkaloids (EA) are produced by a parasitic fungus (Claviceps purpurea) during the cereal grain growth cycle. Feeding cereal grain containing EA to beef cattle can cause constriction of blood vessels, hyperthermia, gangrene of extremities (ears, hoof, and tail), reduced feed intake and growth, and even death. Feed cleaning and processing technologies have been developed to remove EA from the human food chain, thus diverting contaminated feed for livestock use. We performed a beef cattle feedlot experiment to evaluate the impact of increasing levels of EA (0, 0.75, 1.50, 3.00 mg/kg of diet DM) on performance, health, and welfare. Steers fed 3.0 mg/kg of EA were transferred to the control diet (without EA) in the last half of finishing due to toxicity (hyperthermia). As EA levels increased, growth rate throughout the backgrounding and finishing phases decreased, while rectal temperatures increased and altered feeding behaviors occurred. Steers removed from 3 mg/kg EA diet exhibited compensatory gain, but their respiratory rate remained elevated 50 d after EA were last consumed.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxitócicos / Alcaloides de Claviceps Límite: Animals Idioma: En Revista: J Anim Sci Año: 2023 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxitócicos / Alcaloides de Claviceps Límite: Animals Idioma: En Revista: J Anim Sci Año: 2023 Tipo del documento: Article Pais de publicación: Estados Unidos