April - June 2007 - Kasetsart University
April - June 2007 - Kasetsart University
April - June 2007 - Kasetsart University
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Body weight chane (kg/head)<br />
32<br />
30<br />
28<br />
26<br />
24<br />
22<br />
20<br />
of the experimental period followed by gain in the<br />
later period. This could be due to lower preference<br />
and hence lower intake of this soil by the animals.<br />
Animals in control group had slower increase in<br />
body weight. Sheep in the control group showed<br />
compensatory gain from second to fourth month<br />
but grew slower than that of supplemented<br />
animals. Animals in the remaining treatment<br />
groups showed a sharp increase in body weight<br />
after third month of the experiment. This could be<br />
partly due to the availability of good pasture as<br />
rain started during the second month of<br />
experiment.<br />
Liver mineral concentration<br />
Mineral concentration in liver of sheep<br />
fed on different mineral sources is presented in<br />
Table 5. McDowell (1992) reported that liver is<br />
the organ that often represents the status of several<br />
elements in animals. Liver minerals varied from<br />
0.04 to 0.08 ppm for Ca, 0.04 to 0.05 ppm for Mg,<br />
160 to 282 ppm for Fe, 5.49 to 11.79 ppm for Mn,<br />
<strong>Kasetsart</strong> J. (Nat. Sci.) 41(2) 295<br />
July August September October<br />
Experimental period (months)<br />
Control Jair Hermokale Arabi Bole Complete<br />
Figure 3 Average monthly body weight change of sheep supplemented with different mineral soils<br />
and complete mineral.<br />
113 to 229 ppm for Cu and 92 to 110 ppm for<br />
Zn. With exception to Cu and Zn, all the liver<br />
minerals varied significantly (p