Balancing dairy-cow rations

Ration balancing begins with what cows actually consume: diets should be formulated on a dry-matter basis rather than fresh feed weight alone. A change in silage moisture can change nutrient supply even when the same number of kilograms is loaded into the mixer. (University of Minnesota Extension)

Data before formulation

Use current dry-matter measurements for wet ingredients and realistic intake information for the group. Distinguish the ration expressed as dry matter from the fresh quantities weighed during mixing. (University of Minnesota Extension)

A fall in milk output does not necessarily identify a shortage of one additive. Excess rapidly fermentable carbohydrate with insufficient fibre and inadequate energy intake after calving are different nutritional problems. (MSD Veterinary Manual)

Prepare for the review

• Forages: current analyses and dry-matter measurements for the feeds being used. (University of Minnesota Extension)
• Actual intake: feed offered, refusals and the number of animals in the group. (Penn State Extension)
• Mixing: the recipe, weighed quantities and recent changes in moisture. (University of Minnesota Extension)
• Body condition: individual BCS records and changes over time. (Penn State Extension)

Check delivery in the barn

A correct recipe does not by itself ensure that every mixed batch is identical. Weighing, mixing and monitoring wet ingredients are part of delivering a balanced TMR. (University of Minnesota Extension)

Treat mineral and energy supplements as components of the overall feeding programme, not a substitute for balancing it. Discuss contributions from all products before changing the ration.

Read about nutrition and fertility and body condition scoring. Contact AquaBlend to organise a feeding review.

Educational material, not a substitute for veterinary consultation. Diagnosis and treatment should be agreed with the herd veterinarian.