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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Analysis of a growing ability of the chicken hybrid in the chosen company
 MASÁROVÁ, Anna
The bachelor thesis deals with the use of potential growth ability of commercial broiler Ross 308.27,100 chickens were enrolled in the summer batch and it was finished after 36 days of fattening. 26,500 chickens were in the winter batch and it was finished at the age of 37 days. Although hybrids in the summer batch were one day younger, they achieved better fattening parameters. Their average final live weight was 140 g higher and feed consumption per 1 kg weight gain was 14 g lower.The mortality in the summer batch was 2.24% and 4% in the winter batch. 100 individuals were weighed everyday during fattening period. External influences, particularly temperature and feeding technique, that was not optimal, caused that the absolute difference in the live weight at the end of the batch reached 72 g in the summer batch and 491 g in the winter batch in comparison with the technical guidelines. The average coefficient of variation for the whole fattening period was in the summer batch 9.3% (moderate uniform flock) and in the winter batch was 12.9% (a little uniform flock).
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