4,910,786 5,014,134 5,315,670 5,465,321 5,572,565 5,576,548 5,619,998 5,740,268 5,757,309 5,835,619 5,867,602 * 311990 Eichel .................................. 3821199 * 511991 Lawton et al. .................... 3581261.3 * 511994 Shapiro ................................ 3821240 * 1111995 Smyth 706120 * 1111996 Abdel-Mottaleb ..................... 378137 * 1111996 Clark et al. ...................

A low efficiency of bull fattening resulted in a decrease of beef production in Poland. One of the possibilities of the improvement of fattening efficiency is a proper choice of decisions concerning the course of a fattening process. Making the optimal decisions can be supported by means of dynamic programming (DP) models, using the hierarchic Markov process (HMP) technique. The models develope...

the effect of ephedrine at 0 (e0c0, n = 10), 8 (e8c0, n = 10) and 10 (e10c0, n = 10) mg per kg metabolic body weight or mixture of ephedrine/caffeine, at doses of 8 mg ephedrine/80 mg caffeine (e8c80, n = 10), or 10 mg ephedrine/100 mg caffeine (e10c100, n = 7), per kg metabolic body weight on body composition of feedlot mehraban ram lambs (8-month-old) was studied. the lambs were fed for 95 da...

Important achievements have been made to improve feed efficiency of farm livestock, but molecular mechanisms determining utilization remain unclear. The objective this work was identify the reasons behind divergent efficiencies in fattening lambs. Twenty newborn male Assaf lambs were fed milk replacer (MR) ad libitum using an automatic feeder, and weaned progressively during last 7 days artific...