Biomaterial Database

Rumination in pregnant ewes. 1990

K J Stafford, and B F Leek

Department of Physiology and Biochemistry, Veterinary College, U.C.D., Dublin, Ireland.

The daily rumination time (DRT) and the nycterohemeral pattern of rumination were recorded in six ewes before mating and during late pregnancy and in one unmated ewe. The mean DRT was shorter during pregnancy (mean: 329 min/day) than before mating (mean: 435 min/day). The DRT of the unmated ewe remained constant. The nycterohemeral pattern of rumination changed little during the trial.

UI	MeSH Term	Description	Entries
D008409	Mastication	The act and process of chewing and grinding food in the mouth.	Chewing
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D011270	Pregnancy, Animal	The process of bearing developing young (EMBRYOS or FETUSES) in utero in non-human mammals, beginning from FERTILIZATION to BIRTH.	Animal Pregnancies,Animal Pregnancy,Pregnancies, Animal
D004063	Digestion	The process of breakdown of food for metabolism and use by the body.
D005260	Female		Females
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D012417	Rumen	The first stomach of ruminants. It lies on the left side of the body, occupying the whole of the left side of the abdomen and even stretching across the median plane of the body to the right side. It is capacious, divided into an upper and a lower sac, each of which has a blind sac at its posterior extremity. The rumen is lined by mucous membrane containing no digestive glands, but mucus-secreting glands are present in large numbers. Coarse, partially chewed food is stored and churned in the rumen until the animal finds circumstances convenient for rumination. When this occurs, little balls of food are regurgitated through the esophagus into the mouth, and are subjected to a second more thorough mastication, swallowed, and passed on into other parts of the compound stomach. (From Black's Veterinary Dictionary, 17th ed)	Rumens
D012756	Sheep	Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS.	Ovis,Sheep, Dall,Dall Sheep,Ovis dalli