Early Weaning of Discus Symphysodon spp. Larvae: Histological and Morphological Observations
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Tarih
2011
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Israeli Journal Of Aquaculture-Bamidgeh
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
To determine the optimal timing for weaning discus (Symphysodon spp.), larvae were fed a control diet of 100% Artemia, or weaned onto a micro-ground diet on day 18, 23, or 28 after hatching, until 45 days after hatching. During the first 14 days, the development of the digestive tract was studied to determine key events in the early ontogeny of discus larvae. There were significant (p<0.05) differences among treatments in the growth of the larvae. The highest weight increase was observed in the control group but good growth was also obtained when the larvae were weaned to dry feed 28 days after hatching. The specific growth rate (SGR) was 6.0 +/- 0.19 in the control group and 0.4 +/- 0.239, 2.0 +/- 0.257, and 5.2 +/- 0.382 in the 18, 23, and 28 day groups, respectively. Mean survival in all treatments was 56.25% with no significant differences among treatments.
Açıklama
Anahtar Kelimeler
discus, Symphysodon, weaning, growth, survival
Kaynak
Israeli Journal of Aquaculture-Bamidgeh
WoS Q Değeri
Q3
Scopus Q Değeri
Q4
Cilt
63
