Glossary D

The Environmental Glossary. Letter D +++ 'Dose-Response Relationship', 'Dystrophic Lakes', 'DES'

A Dairy Cow is a Bovine from which milk production is intended for human consumption, or is kept for raising replacement dairy heifers.

- Dairy Herd Improvement (DHI) : A Dairy Herd Improvement (DHI) is a specific testing plan which requires supervision and compliance with all official DHI rules.

- Dairy Herd Improvement Association (DHIA) : A Dairy Herd Improvement Association (DHIA) is an organization with programs and objectives intended to improve

- Dairy Herd Improvement Registry (DHIR) : A Dairy Herd Improvement Registry (DHIR) is a modification of the DHIA program to make milk production records acceptable by the specific dairy Breed associations.

A Dairy Steer is a neutered male of any of the dairy cattle breeds. The "Dairy Steers" are raised for

A Dam is Mother or female parent in a pedigree, normally applies to cattle.

A DAMPERS is Controls that vary airflow through an air outlet, inlet, or duct. A damper position may be immovable, manually adjustable or part of an automated control system.

A Data Call-In is a part of the Office of

A data quality is "The totality of features and characteristics of data that bears on their ability to satisfy a given purpose; the sum of the degrees of excellence for factors related to data" (QAMS 1993, 7).

data quality indicators are "Quantitative statistics and qualitative descriptors that are used to interpret the degree of acceptability or utility of data to the user. The principal <

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