If an ultrasound revealed the gender of the fetus, how many chickens are to be used? 
Some Poskim<a href="#_ftn1" name="_ftnref1">[1]</a> rule that one may follow the ultrasound and use a chicken of the projected gender. Others<a href="#_ftn2" name="_ftnref2">[2]</a> rule that one should not rely on it.
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<a href="#_ftnref1" name="_ftn1">[1]</a> Kaneh Bosem 2:20
<a href="#_ftnref2" name="_ftn2">[2]</a> Minchas Yitzchak in a gloss on the above Teshuvah of Kaneh Bosem

Shulchan Aruch HaRav | If an ultrasound revealed the gender of the fetus, how many chickens are to be used?

If an ultrasound revealed the gender of the fetus, how many chickens are to be used? Some Poskim[1] rule that one may follow the ultrasound and use a chicken of the projected gender. Others[2] rule that one should not rely on it. _________________________ [1] Kaneh Bosem 2:20 [2] Minchas Yitzchak