Tsonev, Ts <br/><br/>
[Effectiveness of Deptavac HVT vaccine on broiler parents during the egg-laying period].  [electronic resource] 

 -  Veterinarno-meditsinski nauki  1976 
 - 50-7 p.  digital 
<br/><br/> Publication Type: English Abstract; Journal Article 
<br/><br/><label>ISSN: </label>0324-1068 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Age Factors<br/>Animals<br/>Avian Leukosis--mortality<br/>Bulgaria<br/>Chickens--immunology<br/>Drug Evaluation--veterinary<br/>Female<br/>Marek Disease--mortality<br/>Oviposition<br/>Vaccination--veterinary<br/>Viral Vaccines--administration & dosage