An almost equal number of herds used either a natural or an artificial calf rearing system.
Occasional family-to-family contamination had been previously observed in our fish incubation and rearing system.
Tetracycline was the antimicrobial with the highest frequency of resistance in both rearing systems.
The results in the present study were similar to those observed when cage rearing of H. longifilis which noted higher survival rates when compared to traditional rearing system.
Selection under the CER rearing system resulted in greater estimated genetic response relative to SER.
The following morning, fish were returned to the rearing system.
In the new rearing system young calves at the age of 1 3 weeks originating from several dairy herds are transported to rearing units and reared in large groups.
This indicates the importance of reducing the Tc concentrations to a minimum for the efficient rearing of medfly lines.
A rearing system was performed according to Lawo et al. (2011b).
The introduction of age segregated rearing systems that provides a good environment and a low pathogen load have been proven efficient in preventing PWD [ 29], and the importance of using relevant feeding systems to weaned piglets have been discussed [ 41].
This human capability of emergency prediction can be used to design efficient rear end collision avoidance techniques.
