The utilization of rapeseed expeller for carp (Cyprinus carpio) diets

Abstract

KUKAČKA VLADIMÍR, JIRÁSEK JIŘÍ, KOPP RADOVAN, MAREŠ JAN: The utilization of rapeseed expeller for carp (Cyprinus carpio) diets. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2013, LXI, No. 5, pp. 1289-1295 Production eff ectiveness of rapeseed stamping in the common carp fodder was attested in the controlled conditions of recirculation system with the absence of natural food. 4 isonitrogenous (31.5% NS) and isoenergetic (17.3 MJ GE.kg ) diet with diff erent (35 and 40%) unmodifi ed (URS) and technologically modifi ed (MRS) rapeseed expeller ratio were tested. During the sixty-day feeding trial, benefi cial production eff ect of diet with modifi ed stamping was proved. Diet MRS fi sh were characterized by signifi cantly (P < 0.05) faster length growth. In comparison with fry of MRS variant, they have reached highly signifi cantly (P < 0.01) the higher values of broad -backedness index and signifi cantly (P < 0.05) higher values of body width. Signifi cant values were not detected by individual weight and HSI. Except the haematocrit value, there were no hematologic and biochemical indices infl uenced by feed type. Higher content of fat in the URS was shown at fi sh variant URS/40 by higher fat deposition in hepatopancreas (averagely 30.31%), without statistically signifi cant diff erence compared to other variants. carp fry, growth intensity, feed conversion, haematological parameters Climate changes in the global impact infl uence the sources of basic compound for fi sh feed production -the fi sh-fl our. Also, they infl uence a crop structure of agriculture production with extension of foretime marginally grown crops. Regard to the availability, high consumption and price, there are possibilities of partial reduction of fi sh-fl our in aquafeeds. Namely for the carnivore salmonids and fi sh of prey breeding, the nutrition identifi cation of non-traditional protein sources suitability has prior breeding and economical intent. The development of productively eff ective and aff ordable diet is necessary even for juvenile omnivorous fi sh breeding, including carp. According to TACON and JACKSON (1985), the level of fi sh-fl our substitution in aquafeed depends primarily on the essential fat acids balance and presence of antinutrition substances. In connection with biofuel using program under the EU, the signifi cant growth of oilseed rape (Brasicca napus L.) arisen. Products obtained by industrial manufacturing can be considered as perspective feed ingredients and protein sources for fi sh, as well as the modern technological methods in the processing and the technique of feed production (extrusion).For feeding purposes the oilseed rape is used mainly in extracted grout or stampings. THIELSSEN et al. (2004) added the rape protein concentrate (canola concentrate -CPC) into the feed for rainbow trout (Onchorhynchus mykiss). The best results were reached with 50% presence of CPC in dry matter of feed. The digestibility data of variously processed oilseed rape by see bass carried out i...

Evaluation of protein enriched co‐products originating from wheat fermentation in diets of common carp Cyprinus carpio to examine effects on growth response, mineral retention, haematological status and intestinal integrity

“…In contrast, Rumsey et al (1992) observed that there was no negative effect on feed intake when rainbow trout were fed a diet where 500 g kg -1 of FM was replaced with brewer's yeast. Kukačka and Mareš (2008) showed that the substitution with 15 g kg -1 corn DDGS generated better growth than 30 g kg -1 corn DDGS in the diets of common carp but no adverse effects were found in the fish fed 30% DDGS compared with the control fish fed diet. Nile tilapia has shown no reduction in growth and feed utilization effects when fed up to a 500 g kg -1 substitution of FM with brewers waste (Zerai et al, 2008).…”