Abstract
A growth experiment with 108 lambs (breed German Merino Landsheep) was
carried out to examine the effect of gender, body weight and feeding
intensity on the deposition of Ca. R Mg, Na and K in the empty body
(whole animal minus contents of the gastro-intestinal tract and
bladder). The lambs (50% female and 50% male) were fed at three
levels of feeding intensity ("high", ��medium" and ��low"
by varying daily amounts of concentrate and hay) and slaughtered at
different final body weights (30, 45 or 55 kg). Six male and six female
animals were killed at a final body weight of 18 kg representing the
body weight at the beginning of the comparative slaughter experiment.
There were significant main effects for the three treatments (growth
rate, final weight and gender) on the daily rate of accretion of most
minerals. Feeding intensity had a marked feeding influence (P<0.001) on
the accretion rate for Ca, P, Mg, Na and K. With increasing feeding
intensity (low, medium, high) the daily deposition of Ca and P
increased (2.4; 2.7; 3.2 for Ca and 1.3; 1.5; 1.8 g for P). The main
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