INDILACT – Förlängd frivillig väntetid för förstakalvare. Del 1: randomiserad...

The objective of the study is to investigate how an extended voluntary waiting period between calving and first insemination in primiparous cows would affect milk production and...本研究旨在探究初产母牛产犊至首次输精之间的延长自愿等待期，会对其产奶量及……产生何种影响。