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Fattening Rambouillet lambs with corn stubble or alfalfa, slow intake urea supplementation or balanced concentrate

One hundred and sixty Rambouillet lambs (15.925±0.350 kg/BW) were studied for 90 days with two treatments evaluating in situ DM disappearance, voluntary DM and OM intake, rumen degradation, rate of passage, NH 3 and VFA concentrations, apparent digestibility, ruminal pH, total fermentable carbohydra...

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Bibliographic Details
Published in:Small ruminant research 2004-06, Vol.53 (1), p.89-98
Main Authors: Galina, M.A, Hummel, J.D, Sánchez, M, Haenlein, G.F.W
Format: Article
Language:English
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Summary:One hundred and sixty Rambouillet lambs (15.925±0.350 kg/BW) were studied for 90 days with two treatments evaluating in situ DM disappearance, voluntary DM and OM intake, rumen degradation, rate of passage, NH 3 and VFA concentrations, apparent digestibility, ruminal pH, total fermentable carbohydrates, and weight gains. The first diet (80 lambs plus two cannulated sheep) offered 1000 g corn stubble (CS) per day, 200 g alfalfa hay (AH) per day, and 200 g of a slow-intake urea supplement (SIUS) per day, consisting of 12.0% molasses, 5.0% urea, 4.0% fish meal, 3.0% salt, 2.5% orthophosphate, 3.2% limestone, 12.0% cottonseed meal, 12.0% rice polishing, 25.0% corn, 8.0% poultry litter, 1.5% mineral salts, 2.0% ammonium sulphate, 1.8% cement kiln dust, and 8.0% animal lard. The second group (80 lambs plus two cannulated sheep) was fed 800 g AH per day and 600 g of a 18% CP balanced concentrate (BC) per day. VDMI, OMI, DM digestibility and rumen NH 3 concentrations were highest ( P
ISSN:0921-4488
1879-0941
DOI:10.1016/j.smallrumres.2003.08.008