Effect of synchronization of energy and nitrogen supply on ruminal characteristics and microbial growth

• Published in: Journal of animal science Vol. 71; no. 9; p. 2516
• Main Authors: Henning, P.H, Steyn, D.G, Meissner, H.H
• Format: Journal Article
• Language: English
• Published: United States 01.09.1993
• Subjects: Ammonia - analysis; Animals; AZOTE; Bacteria - growth & development; BALANCE DE ENERGIA; BILAN ENERGETIQUE; Carbohydrate Metabolism; Carbohydrates - analysis; CARNERO; DIGESTION; Energy Intake; FERMENTACION; FERMENTATION; FISIOLOGIA DE LA NUTRICION; Gastrointestinal Transit; Hydrogen-Ion Concentration; Lactates - analysis; Lactic Acid; Male; MICROBIOLOGIA; MICROBIOLOGIE; MICROORGANISME; MICROORGANISMOS; MOUTON; Nitrogen - administration & dosage; NITROGENO; OVIN; OVINOS; PHYSIOLOGIE DE LA NUTRITION; RACE; Random Allocation; RAZAS; RUMEN; Rumen - chemistry; Rumen - microbiology; Sheep - metabolism; Sheep - microbiology; Solubility
• ISSN: 0021-8812; 1525-3163
• DOI: 10.2527/1993.7192516x

The effect of energy and N synchronization in the rumen on microbial growth was investigated. The same daily amount of readily available energy and N sources (19 g of ruminally degradable N/kg of fermentable OM) was supplied intraruminally to sheep, according to different patterns, namely both energy and N as 12-hourly pulse-doses (fast synchronized supply), energy as 12-hourly pulse-doses and N as a continuous infusion (unsynchronized supply), energy as a continuous infusion and N as 12-hourly pulse doses (unsynchronized supply), and both energy and N as continuous infusions (slow synchronized supply). The study was done near maintenance (Exp. 1) and at a higher level of nutrition (Exp. 2). The degree of energy and N synchronization affected neither microbial flow nor efficiency of growth (P 0.2 for energy X N interaction). Continuous infusion of energy resulted in a 17% (P 0.05) and 14% (P