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Effects of injectable vitamin C at weaning and prior to transit on growth performance of early-weaned beef steers.
Beenken-Bobb, Aubree M; Dornbach, Colten W; Deters, Erin L; Shike, Daniel W; Hansen, Stephanie L; McCann, Joshua C.
Afiliação
  • Beenken-Bobb AM; Department of Animal Science, Iowa State University, Ames, IA 50011, USA.
  • Dornbach CW; Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
  • Deters EL; Department of Animal Science, Iowa State University, Ames, IA 50011, USA.
  • Shike DW; Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
  • Hansen SL; Department of Animal Science, Iowa State University, Ames, IA 50011, USA.
  • McCann JC; Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
J Anim Sci ; 1012023 Jan 03.
Article em En | MEDLINE | ID: mdl-36592761
Weaning and transit represent the primary stressors for beef calves in the United States and are responsible for increasing inflammation, suppressing the immune system, and decreasing antioxidant status. These adverse physiological responses to stressors may decrease growth and increase morbidity in beef calves. Vitamin C is the primary water-soluble antioxidant in plasma and when provided intramuscularly prior to the stress event, may be able to attenuate aspects of a stress response on growth and immune function. This study evaluated the effects of injectable vitamin C given to early-weaned beef calves prior to weaning on day 0 and a 6-h transit on day 49 after weaning. Basal levels of plasma ascorbate were lower than prior studies in older and larger animals. As expected, injectable vitamin C rapidly increased plasma ascorbate concentrations at 24 h, but concentrations also increased in control calves receiving a saline injection. Treatments did not affect overall growth performance or dry matter intake. Treatments also did not impact the immune response to a booster vaccination provided at weaning. While other research has indicated a positive effect of injectable vitamin C prior to transit, additional research is needed to refine the dosage and physiological need for exogenous antioxidants like vitamin C based on the severity and duration of a stress event in lightweight beef calves.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ácido Ascórbico / Dieta Limite: Animals Idioma: En Revista: J Anim Sci Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ácido Ascórbico / Dieta Limite: Animals Idioma: En Revista: J Anim Sci Ano de publicação: 2023 Tipo de documento: Article