BF, Dept. of Animal Science, Ljubljana (BFZOO)
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Vpliv spola na telesno maso kalifornijskih postrvi (Oncorhynchus mykiss) doseženo pri določeni starosti = The effect of sex on body weight at fixed age in rainbow trout (Oncorhynchus mykiss) : diplomsko delo : univerzitetni študij : graduation thesis : university studiesVrtačnik, Jernej, Področje delovanja: zootehnikaNamen diplomskega dela je bil ugotoviti ali prihaja do razlik v hitrosti rastimed spoloma kalifornijskih postrvi (Oncorhynchus mykiss). Postrvi smo vzrejali v okroglem poliestrskem bazenu z volumnom ... 650 l, pretok vode je znašal 0,60 l sec. Gostota naselitve postrvi ob pričetku poskusa je znašala okoli 11,20 kg/kubučni meter, temperatura vode pa 7 stopinj C. Povprečna masa postrvi ob naselitvi je bila 35,3 g, ob koncu poskusa je gostota naselitve narasla na 40,97 kg/kubični meter, temperatura vode je bila 8 stopinj C, povprečna masa pa je bila 140,9 g. Spol smo z disekcijo določili 102 kalifornijskim postrvem, 57 (55,88 %) postrvi je bilo moškega spola. Povprečna začetna masa samcev ob pričetku poskusa je znašala 35,9 g, masa ob koncu poskusa pa je bila 147,1 g. Živali ženskega spola je bilo 45 (44,12 %), njihova povprečna začetna masa je znašala 35,1 g, končna masa ob koncu poskusapa je bila 137,5 g. Razlike med tehtanji so pokazale, da v začetku poskusa ni bilo statistično značilnih razlik v telesni masi med samci in samicami (P=0,46), vendar se je razlika med spoloma s časom povečala in ob koncu dosegla statistično značilno razliko v telesni masi med samci in samicami (P<0,05).Type of material - undergraduate thesisPublication and manufacture - Ljubljana : [J. Vrtačnik], 2004Language - slovenianCOBISS.SI-ID - 1611144
Author
Vrtačnik, Jernej, Področje delovanja: zootehnika
Other authors
Pohar, Jurij, 1951-
Topics
kalifornijska postrv |
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spol |
hitrost rasti |
diplomske naloge
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Naloge Dn VRTAČNIK Vpliv IN: 120040256 Naloge Dn VRTAČNIK Vpliv IN: 120040256 |
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Vrtačnik, Jernej, Področje delovanja: zootehnika | |
Pohar, Jurij, 1951- | 06832 |
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