Highly complex phenolic compounds in plants that may play a role of defense again microorganisms and possible predators (the herbivores). Tannin binds and reduces the availability of proteins and carbohydrates to ruminal microbes.
Property of feed detected by some papillae of the tongue and the roof of the mouth resulting in a positive or negative response to further ingestion of the feed.
A two-lobed gland located in the throat and secreting the hormone thyroxin, which regulates the iodine metabolism in the body.
TIMED ARTIFICIAL INSEMINATION
Method of AI breeding in which the timing of artificial insemination (AI) is based on a hormonal protocol that synchronizes the timing of ovulation. This is in contrast to timing insemination based on direct or indirect detection of estrous behavior. Hormonal protocols for Timed AI were developed in 1995 and have been widely adopted by dairy producers for reproductive management.
TOTAL MIXED RATION (TMR)
Mixture of the forages, concentrates, minerals and vitamin supplements of a ration. The total mixed ration has the advantage of offering a balanced ration at each meal rather than on a 24 h basis.
A fat composed of three fatty acids and glycerol.
Digestive enzyme secreted by the pancreas and responsible for the break down of peptide bonds of proteins. Some plants contain a trypsin inhibitor that prevent trypsin from functioning properly.