A calf per cow per year 

 -  Teagasc 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cattle farming<br/>Calving
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Dairy cattle, dairy farming, milk industry, dairy industry
<br/><br/><label>Dewey Class. No.: </label>636.2142