Glossary search results: 6

OBESE

extremely fat.


OIL

Lipid, usually of vegetal origin, which is liquid at room temperature (as opposed to fats).


OMASUM

The third stomach of a ruminant between the reticulum and the abomasum. It is characterized by the presence of muscular leaves that may have an absorptive function.


ORGANIC MATTER

Compounds composed of carbon oxygen hydrogen and nitrogen. All living organisms are composed primarily of organic matter. Fats, carbohydrates and proteins are examples of organic compounds.


ORTS

This is a German word that refers to leftovers of a meal. In dairy nutrition the orts is the amount of feed refused from a daily offering. In dairy nutrition research, orts must be sampled and analyzed in order to calculate with precision the consumption of dry matter and nutrients by the cow. Orts expressed as a percent of dry matter offered is a criteria to determine whether an animal was fed ad libitum (Syn: refusals).


OVULATION

Release of an oocyte (i.e., egg) from a mature follicle. In dairy cows, ovulation occurs 24 to 32 hours after the first standing event of behavioral estrous. Similarly, ovulation occurs 24 to 32 hours after an injection of Gonadotropin Releasing Hormone; (Gn-RH) administered in the presence of a dominant follicle.