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Effect of supplementary concentrates on performance of early‐weaned lambs at pasture
Author(s) -
MARSH R.,
CHESTNUTT D.M.B.
Publication year - 1977
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1977.tb01423.x
Subject(s) - allowance (engineering) , pasture , perennial plant , zoology , biology , agronomy , mechanical engineering , engineering
Two experiments in which early‐weaned lambs (4–7 and 5–9 weeks of age) continuously grazed a perennial ryegrass‐white clover sward are described. In both experiments groups of lambs were offered a proprietary concentrate ad libitum , 2/3 or 1/3 of ad libitum allowance, or no concentrate. Mean daily gains over 56 days in Experiment 1 increased from 88 g without concentrate to 275 g with ad libitum concentrate allowance; the range in daily gains over 71 days in Experiment 2 was 201 g to 253 g respectively. In both experiments mean faecal OM output from herbage decreased as concentrate OM intake increased.