|
|
Zhodnocení produkčních parametrů chovu kapra obecného (Cyprinus carpio) dvou rozdílných linií a typu ošupení
Sotona, Jakub
Title of diploma thesis: Evaluation of Production Parameters in Farming Common Carp (Cyprinus carpio) of Two Different Lines and of Type Scaliness. The goal of diploma thesis was the evaluation of the production and disposition of the scaly and scaleless line carp kept for production purposes. The test took place in the year 2015 on three similar size fishponds with semi-intensive pisciculture, which manages the company Štičí líheň ESOX, spol. s r.o. On each fishpond has deployed 800 pieces of squamous and 800 pieces of scaleless forms of carp. The fishponds, where the test was conducted, followed the hydrochemical of the water parameters, the quantity and diversity of zooplankton. In the evaluation of production characteristics, was placed the greatest emphasis on the evaluation of the growth, losses during breeding, the production of the fishpond, longitude-weight parameters and the analysis of fish tissues for the evaluation of the quality of the meat and the condition of the fish. From the results, it was found less of survival by scaleless form, but despite this was scaleless form compared to higher production. When evaluating the fishponds each other to achieve the highest survival in both forms of the scaliness on the fishpond Kačeřík. The highest production was achieved on the fishpond Jaroška. The worst results of survival and production have been achieved on the fishpond Černýšovický.
|
|
|
Efekt počátečního odchovu raných stádií ryb v kontrolovaných podmínkách při produkci plůdku v rybničním chovu
Sotona, Jakub
The aim of my work was to make a literature search about an initial breeding of early stages of cyprinid fish subsequently breeding in pond conditions and its comparison with traditional type of breeding. Based on results from 2012 -- 2013, when two breeding technologies were road tested on two scale types of common carps, I had to elaborate the methodology of breeding and evaluate the results. The Bachelor thesis was made at the company Štičílíheň ESOX, Ltd.. There was the carp sac-fry feeding for 9 days controlled conditions by nauplia stages of Artemia salina and then transferred to dry fodder by the co-feeding method. Following breeding was done on ponds with natural food and granulated feed until spring harvest. During breeding was made several control catches to weight the fish and control growth. The data were compared and evaluated with the second technology of breeding - without initial feeding (done on the same type of carp). The best survival reached both scale types of carp fry with initial feeding (mirror carp 47% and scaled carp 45,1%). Traditional way of breeding reached a very high loss. Survival was only 4,3% at scaled and 4% at mirror carps. The weight of fish at the first type of breeding technology was 30,06 g of scale carps and 26,77 g of mirror carps and 21,02 g and 18,19 g of the same types of carps at the second technology -- without pre-feeding.
|
guest ::
