期刊名称：Universitatea de Stinte Agricole si Medicina Veterinaria a Banatului Timisoara. Lucrari Stiintifice. Seria I. Management Agricol
印刷版ISSN：1453-1410
出版年度：2012
卷号：XIV
期号：2
页码：473-479
出版社：Universitatea de Stiinte Agricole si Medicina Veterinara a Banatului Timisoara
摘要：Prolificacy is influenced by the feeding and growth level and operating system. The most prolificacy are made to secundiparous female inseminated in autumn. On females weaned in January appearance of postpartum heats has manifested in a increasing proportion from 88.4% in the first cycle to the secundiparous to 85.3% on primiparous
