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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

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