Effects of Prepartum Dietary Energy Level and Nicotinic Acid Supplementation on Immunological Hematological and Biochemical Parameters of Periparturient Dairy Cows Differing in Parity

摘要

Simple SummarySeveral biological changes occur during the transition from late pregnancy to early lactation which is associated with a high susceptibility of health disorders. Nicotinic acid, as feed additive, is suggested to balance catabolic metabolism of periparturient dairy cows by attenuating lipolysis and impact production performance. This study provides information of the biological changes occurring around parturition with special emphasis on differences between primiparous and multiparous cows. Present results showed that energy-dense feeding prepartum did not result in metabolic imbalances postpartum in dairy cows which were similar in body condition score. Nicotinic acid supplementation did not reveal any effect.