Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 1
Written by Elena IRIMIA, Daniela-Mihaela GRIGORE, Ioana NICOLAE, Dinu GAVOJDIAN, Stelian BĂRĂITĂREANU, Livia VIDU
In order to study the influence of calves sex, dams age and year of calving, it is very important to evaluate at farm level, the incidences of colibacillosis, coccidiosis, rickets, neonatal enteritis, respiratory diseases (BRD) and haemorrhagic enteritis in un-weaned dairy calves. The study was carried out at the dairy cattle farm of the Research and Development Institute for Bovine Balotesti, Romania between January 2018 and December 2019, with health datasets from 176 Romanian Black Spotted calves. Colibacillosis and coccidiosis incidences were not influenced (p>0.05) by the sex of the calves, while rickets incidence was significantly influenced (p≤0.001), with 2.20 ± 1.55% of the male calves being affected and 10.59 ± 3.36% of the females, respectively. Year of birth had significantly influenced (p≤0.05) the incidence of colibacillosis and rickets and had no effects (p>0.05) on coccidiosis incidence. Neonatal enteritis, BRD and haemorrhagic enteritis incidences were not influenced (p>0.05) by factors such as calves sex, dams age and year of birth. Colibacillosis and rickets incidences were the only health problems influenced by factors such as calves sex and year of birth.
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