see diarrhea.

The movement of a material from one place to another. Secretion is often required to move a material to the place where it can be excreted. Examples of materials secreted include all materials excreted (see Excretion above), plus enzymes, hormones and saliva. The organs that play a role in secretion include all those involved in excretion, plus the digestive glands like salivary glands, pancreas, liver and gallbladder and endocrine glands like the thyroid gland, pituitary gland, and ovaries and testes.

A fertilized and ripened plant ovule containing an embryo capable of germinating to produce a new plant.

The probability that a test is positive, given that the animal has the disease (See also specificity).

The clear yellowish fluid obtained upon separating the clotted whole blood into its liquid and solid (red and white blood cells) components.

Method of preservation of fresh forages based on the partial fermentation of the sugars in absence of oxygen. Silage can be made in various silos.

Structure constructed to help preserving forages as silage. Different types of silos includes: Tower silo, oxygen limiting silo, trench silo, etc.

A cavity formed by a bending or curving; a dilated passage.

(a) Any of the cells of a plant or animal except the reproductive cells. (b) Milk somatic cells are primarily leukocytes (white blood cells) and some epithelial cells shed from the lining of the mammary gland. The leukocytes are derived from blood and consist of macrophages, lymphocytes, and polymorphonuclear cells, primarily neutrophils (PMN). Normal milk does contain somatic cells, and the concentration of these cells is almost always less than 100,000 cells/ml in milk from uninfected/uninflamed mammary quarters.

The probability that a test is negative, given that the animal does not have the disease (see also sensitivity).

A ring-like muscle that maintains constriction of a bodily passage or orifice and opens upon relaxation.

To grow or to develop quickly (syn to germinate).

The main stem of an herbaceous plant.

The main upward growing axis of a plant, usually above the ground and in direction opposite of the roots.

A calf born dead or that dies within 48 hours of birth.

Fodder; mature-cured stalks from which seeds have been removed, such as stalks of corn or stalk of sorghum without heads.

(see Fibrous carbohydrate).

Without clinical manifestations; said of the early stages or a very mild form of a disease, e.g. subclinical disease, infection, parasitism, or when a disease is detectable by biological tests but not by a clinical examination.

The intimate living together of two dissimilar organism in any of various mutually beneficial relationships.