The Influence of Livefeed Supplementation on Growth and Reproductive Performance of Swordtail (Xiphophorus helleri Heckel 1848) Broodstock View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2001-12

AUTHORS

D.P. Kruger, P.J. Britz, J. Sales

ABSTRACT

The influence of supplementation of drum-dried flake feed with various levels of Daphnia sp. on the growth and fecundity of broodstock Xiphophorus helleri was evaluated. Weekly supplementation showed no measurable advantage over flake feed only. A direct correlation was demonstrated between fecundity and size of female fish when fed a formulated flake feed only. Fish fed a daily Daphnia supplement had a mean final weight of 5.97 g, feed conversion ratio of 1.33 and mean fecundity of 190 embryos per female, which was significantly higher than the yield from the non-supplemented or weekly supplemented treatments. Despite these differences, the number of young harvested during the experiment did not differ (P > 0.05) between treatments and this discrepancy was ascribed to parental cannibalism of new born juveniles. More... »

PAGES

265-273

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/a:1013109128120

DOI

http://dx.doi.org/10.1023/a:1013109128120

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1022178281


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