Biomaterial Database

Postruminal lysine and methionine infusion in steers fed a urea-supplemental diet adequate in sulfur. 1980

G M Hill, and J A Boling, and N W Bradley

Postruminal utilization of methionine by growing steer calves fed ground shelled corn, urea, and cottonseed hulls adequate in sulfur was studied by abomasal infusion of graded quantities of methionine with lysine adequate. A 6 X 6 Latin square of treatments was replicated in which infusions provided lysine and methionine in grams per day: A) 0,0; B) 24,0; C) 24,4; D) 24,8; E) 24,12; and F) 24,12 plus 140 g sodium caseinate. Treatments were brought to volume in 2 liters of water and infused continuously over 24 h. Responses measured were nitrogen retention, urea nitrogen in plasma, and concentrations of free amino acids. Retention of nitrogen was increased in steers abomasally infused with lysine or lysine in combination with graded quantities of methionine. Infusion of 4, 8, or 12 g/day of methionine with constant lysine (24 g/day) did not alter nitrogen retained from lysine infused alone. Infusion of a lysine-methionine-sodium caseinate positive control raised nitrogen retention compared with no caseinate. Lysine of plasma was higher in treatments in which lysine was infused compared with the negative control. Methionine increased linearly with infusion of incremental quantities. Methionine was not limiting when infused prostruminally with adequate lysine to growing steers fed the urea-supplemented diet with sulfur adequate.

UI	MeSH Term	Description	Entries
D008239	Lysine	An essential amino acid. It is often added to animal feed.	Enisyl,L-Lysine,Lysine Acetate,Lysine Hydrochloride,Acetate, Lysine,L Lysine
D008715	Methionine	A sulfur-containing essential L-amino acid that is important in many body functions.	L-Methionine,Liquimeth,Methionine, L-Isomer,Pedameth,L-Isomer Methionine,Methionine, L Isomer
D009584	Nitrogen	An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
D002417	Cattle	Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.	Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D004032	Diet	Regular course of eating and drinking adopted by a person or animal.	Diets
D000596	Amino Acids	Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins.	Amino Acid,Acid, Amino,Acids, Amino
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
D014508	Urea	A compound formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids.	Basodexan,Carbamide,Carmol