Effect of diet, energy balance and milk production on oxidative stress in early-lactating dairy cows grazing pasture
Mariana Pedernera, Pietro Celi, Sergio C Garcia, Hannah E Salvin, Idris Barchia, William J Fulkerson
The Veterinary Journal | ELSEVIER SCI LTD | Published : 2010
The aim of this study was to determine the effect of diet, energy balance and milk production on oxidative stress in early-lactating, Holstein-Friesian dairy cows fed to produce either low or high levels of milk. Indicators of energy balance (non-esterified fatty acids, β-hydroxybutyrate, glucose and insulin-like growth factor-1) and indicators of oxidative stress (reactive oxygen metabolites and biological antioxidants) were measured in the first 5 weeks of lactation. Energy balance indicators showed that high producing animals had a lower degree of negative energy balance. Diet was found to have an indirect effect on the level of oxidative stress. Factors associated with a high level of ox..View full abstract
The authors wish to acknowledge the staff at The Elizabeth Macarthur Agricultural Institute Farm for the management and care of the animals and in particular Terry Osborne, the farm manager. We are also grateful to Amy Rogers for the help in feed and milk data collection. The CONACYT, Mexico is gratefully acknowledged for the scholarship to Mariana Pedernera, and FutureDairy for the funding of this research.