One may suppose that these changes are the factors influencing the process of lactation.
It seems that milk protein synthesis, being a more sophisticated process, needs longer intervals of rest between lactations.
From the fifth lactation period onwards, exhaustion may begin in the breast tissue.
During the lactation period sow entities are related to several piglet entities.
Ten first lactation, non-pregnant, animals were chosen and divided into the control and experimental groups of five animals each.
In all centres it was shown to be harmless and to have no adverse effect on involution or lactation.
Their metabolic demands during their first lactation were being adequately met by dietary intake as is apparent in continued weight gain.
Estimating the covariance structure of traits during growth and aging, illustrated with lactation in dairy cattle.
