Glossary search results: 8

EAR (of corn)

The seed-bearing part of a cereal plant. An ear of corn is composed of the grains, the cob, but not the husk, which are removed during harvesting.


EMBRYO

An organism, animal or vegetal, at its early stage of development.


ENDOSPERM

The nutritive tissue of a plant seed, surrounding and absorbed by the embryo.


ENERGY DENSITY

A measure of the concentration of energy in a feed or a ration usually expressed as a unit of energy (megacalorie or megajoule) per lb of dry matter or per kg of dry matter.


ENROLLMENT PLAN

Method used to select cows which are eligible for hormonal treatment (such as Ovsynch). For example, the enrollment plan may be defined by the voluntary waiting period or a negative pregnancy check.


ENZYME

Usually a protein that accelerates a biochemical reaction at body temperature, without being used up in the process (see also catalyst).


EPITHELIUM

Membranous tissue, usually in a single layer, composed of closely arranged cells separated by very little intercellular substance. The epithelium forms the lining of the respiratory, intestinal, and urinary tracts and the outer surface of the body.


EXCRETION

The removal of a material from an organism. Example of material excreted include tears, urine, feces, sweat and carbon dioxide. Examples of an organism's organs involved in excretion include eyes, bladder, rectum, skins and lungs.