April - June 2007 - Kasetsart University
April - June 2007 - Kasetsart University
April - June 2007 - Kasetsart University
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mineral supplementation suggested by NRC<br />
(1985) but it may not be sufficient to fulfill the<br />
mineral requirement. Moreover, micro minerals<br />
in the soil were below sufficient levels for mineral<br />
supplementation. Individual minerals should be<br />
adjusted to meet a minimum of 50% of the daily<br />
intake requirement of the sheep while formulating<br />
mineral supplement. If the imbalance minerals<br />
were rectified to meet standard mineral mixture<br />
requirement, the soils would be more beneficial<br />
to animals.<br />
Mineral intake and live weight of the sheep<br />
The mineral intake and live weight<br />
change of sheep during the experimental<br />
period are presented in Table 3. The mean daily<br />
mineral intake of sheep supplemented with<br />
mineral soils of Jair, Hermokale, Arabi, Bole and<br />
complete mineral were 18.14, 16.51, 16.02, 11.86<br />
and 15.00 gram/head, respectively. There was no<br />
significant difference (p>0.05) in mineral<br />
intake among the sheep fed with soils from Arabi,<br />
Jair and Hermokale areas. The lowest mineral<br />
intake was recorded for sheep fed with Bole soil<br />
(11.86 g/day) from Zeway area. Bole soil had<br />
lower Cu (0.28 ppm), Mn (0.80 ppm) and Zn (0.50<br />
ppm) than the suggested critical values set by<br />
Mtimuni (1982) and McDowell (1983). When<br />
compared to all other mineral soils the level of K<br />
in Bole soil was higher. However, it had lower<br />
concentration of Na, Ca and Mg. The imbalance<br />
<strong>Kasetsart</strong> J. (Nat. Sci.) 41(2) 293<br />
of minerals of Bole soil may attribute to the lower<br />
mineral intake by the animals. Khalili, (1993)<br />
reported that sodium deficiency which was<br />
evident in central parts of Ethiopia usually<br />
causes increased soil ingestion among grazing<br />
livestock.<br />
The mean daily weight gains and total<br />
weight gain of sheep fed complete mineral mixture<br />
were significantly higher (p