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Statements

Subject Item
n2:RIV%2F60076658%3A12610%2F08%3A9P001341%21RIV09-MZE-12610___
rdf:type
skos:Concept n17:Vysledek
dcterms:description
The goal of this study was to verify, whether all-female perch juveniles grow faster than bisexual ones. Monosex all-female stock (AO) was produced by mating masculinizated females (neomales) with common females of local strain. Bisexual stock (BO) was obtained by routine method. The experiment lasted for 126 days and was preceded by pond-nursed (60 days) and conditioning period (14 days), respectively. Perch were held in 50 l aquaria connected on recirculation system, each group being tested in triplicate. No significant differences (P = 0.0646) in total survival were observed after 126 days of rearing between all-female and bisexual stock, but all-female perch (MO) gained 20 % more weight (P = 0.0480) than the bisexual (BO) (25.2 g ? 9.7 contrary to 21.0 ? 7.5; mean ? S.D.), suggesting that culture of monosex female perch could provide an economic benefit. Overall feed conversion ratio for tanks with mixed sex (1.43 ? 0.21) was significantly (P = 0.0173) higher than in tanks with all-female (1.30 ? The goal of this study was to verify, whether all-female perch juveniles grow faster than bisexual ones. Monosex all-female stock (AO) was produced by mating masculinizated females (neomales) with common females of local strain. Bisexual stock (BO) was obtained by routine method. The experiment lasted for 126 days and was preceded by pond-nursed (60 days) and conditioning period (14 days), respectively. Perch were held in 50 l aquaria connected on recirculation system, each group being tested in triplicate. No significant differences (P = 0.0646) in total survival were observed after 126 days of rearing between all-female and bisexual stock, but all-female perch (MO) gained 20 % more weight (P = 0.0480) than the bisexual (BO) (25.2 g ? 9.7 contrary to 21.0 ? 7.5; mean ? S.D.), suggesting that culture of monosex female perch could provide an economic benefit. Overall feed conversion ratio for tanks with mixed sex (1.43 ? 0.21) was significantly (P = 0.0173) higher than in tanks with all-female (1.30 ? Cílem práce bylo ověřit zda celosamičí obsádka juvenilních okounů říčních roste rychleji v porovnání s bisexuální obsádkou. Monosexní (all-female) obsádka (AO) byla získána reprodukcí maskulinizovaných jikernaček (neomales) s normálními jikernačkami. Bisexuální obsádka byla získána běžnou metodou. Růstovému experiment(126 dní) předcházel odchov larev v rybnících (60 dní) a adaptace plůdku na intenzivní podmínky (14 dní). Okouni byli chováni v 50 l akváriích napojených na recirkulační systém. Obě skupiny byly testovány ve třech opakováních. V celkovém přežití nebyly nalezeny signifikantní rozdíly (P = 0.0646) po 126 dnech odchovu v intenzivních podmínkách, nicméně celosamičí obsádka (AO) dosáhla o 20 % vyšší hmotnosti (P = 0.0480) než bisexuální (BO) (25.2 g ? 9.7 versus 21.0 ? 7.5; průměr ? S.D.). Celkový koeficient konverze pro nádrže s bisexuální obsádkou (1.43 ? 0.21) by průkazně vyšší (P = 0.0173) než v nádržích s monosexní (1.30 ? 0.11). Růstová křivka obou skupin demonstruje, že vyšší růst samič
dcterms:title
The growth performance of all- female perch Růstové schopnosti celosamičí obsádky okouna říčního The growth performance of all- female perch
skos:prefLabel
Růstové schopnosti celosamičí obsádky okouna říčního The growth performance of all- female perch The growth performance of all- female perch
skos:notation
RIV/60076658:12610/08:9P001341!RIV09-MZE-12610___
n3:aktivita
n15:P n15:Z
n3:aktivity
P(QF4118), Z(MSM6007665809)
n3:dodaniDat
n8:2009
n3:domaciTvurceVysledku
n20:5682789 n20:3383466 n20:8772061 n20:1799630
n3:druhVysledku
n19:D
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
369692
n3:idVysledku
RIV/60076658:12610/08:9P001341
n3:jazykVysledku
n16:eng
n3:klicovaSlova
Perch (Perca fluviatilis L.); All-female stock; Growth; Sexual growth dimorphism
n3:klicoveSlovo
n11:Sexual%20growth%20dimorphism n11:Growth n11:Perch%20%28Perca%20fluviatilis%20L.%29 n11:All-female%20stock
n3:kontrolniKodProRIV
[B9299055A245]
n3:mistoKonaniAkce
České Budějovice
n3:mistoVydani
České Budějovice
n3:nazevZdroje
Biotechnology 2008
n3:obor
n6:GL
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n14:QF4118
n3:rokUplatneniVysledku
n8:2008
n3:tvurceVysledku
Stejskal, Vlastimil Hamáčková, Jitka Kouřil, Jan Policar, Tomáš
n3:typAkce
n21:CST
n3:zahajeniAkce
2008-01-01+01:00
n3:zamer
n4:MSM6007665809
s:numberOfPages
4
n10:hasPublisher
Scientific Pedagogical Publishing
n12:isbn
80-85645-58-0
n22:organizacniJednotka
12610