N

Glossary

Net Feed Efficiency (NFE) Refers to the difference in animals feed intake independent of requirements for growth rate and body weight.

Net Feed Intake (NFI) The trait calculated by phenotypic adjustment of feed intake for body weight and growth as a measure of NFE.

Nominal classification Occurs where observations are recorded in discrete, unordered classes, like breed or reason for disposal.

Non-genetic effects Effects which influence the performance of an animal which are not genetic in origin.

Non-return rate Based on the observation that a bred/mated cow has not returned for another service within a defined number of days.