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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The Tench Fertility and Condition Changes in Fishery HLuboká
ŠAMPALÍK, Jan
The main present effort in the controlled fish reproduction is the finding universal preparation which are suitable for the ovulation induction of large fish species spectra. The preparation should not cause hight after-spawn mortality of generation fish and it is wantable to repeat inorganic spawn in following seasons too. The experiment which reviewed the tench fertility and condition with using several hormonal preparation was realized in working condition of Fishery Hluboká (hatchery Mydlovary) in 2006 {--} 2007. The gained generation material was separated in several intervals by weight and it was detected the working fertility in percent and semination in percent for individual weight categories. The experiment was realized by using following preparation: Ovopel, Dagin, Supergestran, Kobalerin.
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Food Intake of Roach (Rutilus rutilus) During the Spawning Season
 ŠAMPALÍK, Jan
The main objective of the diploma thesis was defined as the consideration of the hypothesis that food intake structure of adult roach changes significantly during the spawning period. The practical experiment was conducted to reach the defined aim. The experiment was performed on the Brno and Hamry Reservoirs in 2008 and 2009. The acquired data were analysed by standard tools used for gut contents analyses (Indirect Method, Frequency of Occurrence, Index of Fullness, Index of Preponderance) related to the Gonadosomatic Index.
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