The detection of new infections in animals at calving observed in our study is probably the result of infections that occurred during the non-lactating period.
Clearly, shorter calving intervals, even with constant lactation yields, would lead to larger lifetime milk yields.
For the decline-of-maternal-antibody analysis, calves with maternal antibody that subsequently sero-converted before maternal-antibody had declined were considered as withdrawals (censored).
Cumulative impacts of an evolving oilfield complex on the distribution of calving caribou.
The two other models were comparable in all terms except they added a predictive variable to take into account the effect of calving date.
Effects of precalving feed level on birth weight, calving difficulty and subsequent fertility.
Several studies showed a negative correlation of the postpartum anoestrus with the calving date on suckler herds in both the northern and southern hemisphere.
The reduced levels of kairomones in calf odour accord with the finding that calves attract significantly fewer tsetse than an ox.
