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Function
Uesd the paintstick at the rear ends of the cow in the same pen, piant it about 5 cm wide and 15cm long to makr the mark. Observe everyday if the mark has been broken off , it shows that the cow has been mounted and she is ready for atrificial insemination. if it doesn't show any removal of the mark within 4 weeks' time , the cow will be seen as either sick or non-heating cow , she should receive treatment .
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