Limiting amino acids in meat and bone and poultry by-product meals

• Published in: Journal of animal science Vol. 75; no. 12; pp. 3294 - 3300
• Main Authors: Klemesrud, M.J, Klopfenstein, T.J, Lewis, A.J, Shain, D.H, Herold, D.W
• Format: Journal Article
• Language: English
• Published: Savoy, IL Am Soc Animal Sci 01-12-1997; American Society of Animal Science; Oxford University Press
• Subjects: ACIDE AMINE; AGNEAU; AMINO ACIDS; Amino Acids - analysis; Amino Acids - metabolism; AMINOACIDOS; Animal productions; ANIMAL PRODUCTS; Animals; AVES DE CORRAL; Beef; Biological and medical sciences; Biological Products; BOEUF; BONE MEAL; BUEY; BULLOCKS; BYPRODUCTS; CALIDAD PROTEICA; Cattle; Cattle - growth & development; Cattle - metabolism; Cattle - physiology; CONTENIDO DE MATERIA SECA; CORDERO; DIET; Diet - veterinary; DIETA; Dietary Proteins - metabolism; Dietary Supplements; DRY MATTER CONTENT; EFFICACITE ALIMENTAIRE; EFICIENCIA DE CONVERSION DEL PIENSO; FARINE D'OS; FARINE DE VIANDE; FEED CONVERSION EFFICIENCY; FEED INTAKE; Feeds; Fundamental and applied biological sciences. Psychology; GAIN DE POIDS; GANANCIA DE PESO; HARINA DE CARNE; HARINA DE HUESOS; INGESTION DE PIENSOS; LAMBS; LIVEWEIGHT GAIN; Male; Meat - analysis; Meat - standards; MEAT MEAL; METHIONINE; Methionine - metabolism; METIONINA; Minerals - chemistry; Minerals - standards; POULTRY; Poultry Products - analysis; Poultry Products - standards; PRISE ALIMENTAIRE (ANIMAUX); PRODUCTOS DE ORIGEN ANIMAL; PRODUIT ANIMAL; PROTECTED PROTEIN; PROTEIN QUALITY; PROTEIN SOURCES; PROTEINAS; PROTEINE; PROTEINS; QUALITE PROTEIQUE; Random Allocation; REGIME ALIMENTAIRE; Regression Analysis; Rumen - metabolism; Sheep - growth & development; Sheep - metabolism; Sheep - physiology; SOUS PRODUIT; STEERS; SUBPRODUCTOS; TENEUR EN MATIERE SECHE; Terrestrial animal productions; Urea - analysis; Urea - metabolism; Vertebrates; VOLAILLE; WEIGHT GAIN; Weight Gain - physiology; Animal feeding; Nutritive value; Meat meal; Poultry by product; Feed conversion efficiency; Vertebrata; Meat animals; Mammalia; Diet; Beef cattle; Animal protein; Artiodactyla; Bone meal; Ungulata; Comparative study; Feed
• DOI: 10.2527/1997.75123294x
• EISSN: 1525-3163; 0021-8812
• ISSN: 0021-8812

In situ, digestion, and growth studies were conducted to evaluate four meat and bone meals and six poultry by-product meals as sources of escape protein and to predict the first-limiting amino acid for growing calves. Escape protein values, determined by 12-h in situ incubation, ranged from 41.7 to 51.0% of CP for meat and bone meals; poultry by-product meals ranged from 32.0 to 39.8%. True protein digestion in the gastrointestinal tract of lambs differed among protein sources (P .05,), ranging from 79 to 95%. In each of three growth trials, 60 steers (258 +/- 24, 241 +/- 23, and 230 +/- 16 kg for Trials 1, 2, and 3, respectively) were supplemented with 4 of the 10 protein sources along with a urea supplement. Protein sources were fed at 30, 40, 50, and 60% of the supplemental CP, with urea supplying the remainder. Protein efficiency differed among treatments (P .10), ranging from .61 to 1.55. Amino acid composition was determined for each protein source, and the individual metabolizable amino acids were regressed on the protein efficiency values. Escape protein values were correlated (R2