Príklady calf

• Production of cloned calves following nuclear transfer with cultured adult mural granulosa cells.

• Therefore, during the simulation of our models, we take samples from individual calves according to the actual sampling dates.

• Therefore, we introduce calves into our models according to their actual dates of birth.

• Weaned beef and dairy calves have been reported to have a higher prevalence of infection than unweaned calves [22, 25, 44].

• Even more prominent differences were observed between calves infected with the above-mentioned isolates.

• The parasite mainly affects first grazing season calves causing diarrhoea, malabsorption of nutrients and, in severe cases, death.

• Evidence for genetic control of nematode eggshedding rates in calves.

• Nevertheless, calves from all groups developed serious disease following the challenge infection.

• Finally, although a substantial degree of immunity was induced by the primary infection, it was insufficient to protect calves from lungworm disease after challenge.

• Eight calves cloned from somatic cells of a single adult.

• To confirm the immune status of the calves, reductions in worm burdens were measured after treatment with benzimidazoles at housing and at subsequent challenge infection.

• Rectal samples were obtained aseptically from calves by rectal palpation.

• Blood samples were obtained from calves 48 h after birth and then approximately every 7 weeks through weaning.

• The limited numbers of calves preclude using these data to estimate the percentage of calves susceptible to infection from low dose exposures.

• Approximately 20 weaned heifer calves were selected each year as replacements for dams culled from the herd.