|
| Hammermill |
| |
Equipment used to reduce particle size. Achieved by impact with swinging hammers.
|
|
| Hammermill rods |
| |
Rods inside the hammermill, which the hammers attach to.
|
|
| Hammermill screens |
| |
Perforated screens inside a hammermill used to separate particle sizes. Particles successfully reduced by the hammer mill pass through the screen and leave the hammer mill with the aid of a pneumatic system.
|
|
| Haulm |
| |
The stems and leaves of a crop left after harvest.
|
|
| Hay |
| |
A mature grass or legume that has been cut and allowed to dry in the field. After drying it is stored and used for animal feed when pasture/rangeland is not available for grazing.
|
|
| Hazard analysis critical control point (HACCP) |
| |
A system which identifies, evaluates and controls hazards which are significant for food safety.
|
|
| Head |
| |
The height of a column or body of fluid above a given point expressed in linear units. Head is often used to indicate gage pressure. Pressure is equal to the height times the density of the fluid.
|
|
| Heat |
| |
The form of energy that has the capacity to create warmth or to increase the temperature of a substance. Any energy that is wasted or used to overcome friction is converted to heat. Heat is measured in calories or British thermal units (Btu's). One Btu is the amount of heat required to raise the temperature of one pound of water one degree Fahrenheit.
|
|
| Heat Damage |
| |
The result of heating in feeds that essentially binds nitrogen to the fibre portion of the feed making it partially or wholly unavailable. The net effect is reduced feed quality or feeding value.
|
|
| Heat exchanger |
| |
A device which transfers heat through a conducting wall from one fluid to another.
|
|
| Heat increment of feeding |
| |
The heat produced when feed is ingested and utilized.
|
|
| Heat treatment |
| |
A process in which heat is used to treat compound feed in order to reduce the microbial load and to eliminate pathogenic germs such as salmonella.
|
|
| Hectare (ha) |
| |
A metric unit of area, 100 metres by 100 metres (10,000 square metres); equivalent to 2.471 acres.
|
|
| Helical |
| |
Spiral-shaped: in the shape of a helix or spiral.
|
|
| Hemicellulose |
| |
The polysaccharide fraction existing in the cell wall of the plant. It is similar to cellulose but is only partially digestible in the rumen.
|
|
| Herbivores |
| |
Animals that feed on plant material.
|
|
| Hertz (Hz) |
| |
Unit of frequency; equal to one cycle per second (cps).
|
|
| Hog fuel |
| |
Waste wood that is used for generation of heat and process energy; made by reducing bark to a usable size.
|
|
| Holocellulose |
| |
The total carbohydrate fraction of a plant. That is, cellulose plus hemicellulose.
|
|
| Hopper |
| |
A funnel shaped bin used to store grain or pelleted feed.
|
|
| Horsepower (hp) |
| |
The power required to lift 550 pounds one foot in one second or 33,000 pounds one foot in one minute. A horsepower is equal to 746 watts or to 42.2 British thermal units per minute.
|
|
| Husbandry |
| |
Economic management of a farm; care, cultivation and breeding of crops and animals.
|
|
| Hydraulic |
| |
To move or convey by fluid.
|
|
| Hydraulic balance |
| |
A condition of equal opposed hydraulic forces acting on a part in a hydraulic component.
|
|
| Hydraulic control |
| |
A control which is actuated by hydraulically induced forces.
|
|
| Hydraulics |
| |
Engineering science pertaining to liquid pressure and flow.
|
|
| Hydrodynamics |
| |
Engineering science pertaining to the energy of liquid flow and pressure.
|
|
| Hydrostatics |
| |
Engineering science pertaining to the energy of liquids at rest.
|
|
| Hygrometer |
| |
An instrument for measuring the humidity of air.
|
|
| Hygroscopic |
| |
Changes its moisture content to be in equilibrium with the atmosphere.
|
