Supplemental nicotinic acid or nicotinamide for lactating dairy cows

¹Department of Animal Sciences, University of Illinois, Urbana 61801.

|October 1, 1990

Summary

Feeding nicotinamide to dairy cows improved milk production and fat content. It also positively impacted key blood metabolites like glucose and beta-hydroxybutyrate during early lactation.

Area of Science:

Animal Science
Nutritional Biochemistry
Dairy Science

Background:

Early lactation in dairy cows presents significant metabolic challenges.
Nutritional supplementation, such as nicotinic acid and nicotinamide, is explored to mitigate these challenges.
Understanding the impact of these supplements on milk production and metabolic health is crucial for dairy management.

Purpose of the Study:

To evaluate the effects of supplemental nicotinic acid and nicotinamide on milk production and metabolite changes in multiparous Holstein cows during early lactation.
To investigate the influence of nicotinamide supplementation on metabolic responses during a feed deprivation period in lactating dairy cows.

Main Methods:

Two experiments were conducted with multiparous Holstein cows.
Experiment 1 involved 30 cows assigned to control, nicotinic acid (6 g/day), or nicotinamide (6 g/day) groups from 2 wk prepartum to 12 wk postpartum.
Experiment 2 involved six cows receiving nicotinamide (12 g/day) from 2 wk prepartum to 4 wk postpartum, with metabolic monitoring during a 48-h feed withdrawal.

Main Results:

Cows fed nicotinamide showed increased milk yield and higher milk fat percentage in specific weeks compared to controls.
Supplementation with nicotinic acid or nicotinamide lowered blood serum beta-hydroxybutyrate concentrations.
Nicotinamide supplementation increased serum glucose and decreased serum free fatty acids (FFA) in Experiment 1, but showed no significant effect on these metabolites during feed deprivation in Experiment 2.

Conclusions:

Supplemental nicotinamide can enhance milk production and fat content in early-lactating Holstein cows.
Nicotinamide and nicotinic acid influence key metabolic indicators, potentially aiding cows through the transition period.
Nicotinamide supplementation did not alter major blood metabolites during a short-term feed deprivation period in established lactation.

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Supplemental nicotinic acid or nicotinamide for lactating dairy cows

Area of Science:

Background:

Purpose of the Study:

Main Methods:

Main Results:

Conclusions:

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