geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Satiation meal and the effects of meal and body sizes on gastric evacuation rate in brook trout Salvelinus fontinalis fed commercial pellets


, : Satiation meal and the effects of meal and body sizes on gastric evacuation rate in brook trout Salvelinus fontinalis fed commercial pellets. Journal of Fish Biology 89(2): 1227-1238

Gastric evacuation (GE) experiments were performed on brook trout Salvelinus fontinalis fed commercial food pellets. The experiments included small fish (36 g; 15 cm total length, LT ) fed meals of 0·2, 0·4 and 0·8 g and large fish (152 g; 23 cm) fed meals of 0·8, 2·0 and 4·0 g at temperatures ranging from 15·1 to 18·2° C. The stomach contents were thereafter sampled and weighed at 3 h intervals until the first empty stomach was observed. The course of GE was examined by use of a general power function of the data that revealed that the square-root function described the GE rate (GER) by the current stomach content mass independently of original meal size. Using the square-root function, the relationship between GER and fish size was described by a power function of fish length, whereas the effect of temperature was described by a simple exponential function. GER of the commercial pellets fed to S. fontinalis could thus be described by dStdt=-0·000464L1·31e0·052TSt (g h(-1) ), where St is stomach mass (g) at time t (h), L is total fish length (cm) and T is temperature (° C). The result of this study should provide a useful tool for planning of feeding regimes in production of S. fontinalis by optimizing growth and minimizing food waste.

US$19.90

PMID: 27282124

DOI: 10.1111/jfb.13021


Other references

Bierman, H.R.; Hood, J.E., 1973: Levels of leukopoietin activity in patients with myelofibrosis. Bibliotheca Haematologica 39: 890-896

Conti, S.; Landi, P., 1975: Performance of maize hybrids derived from Marano at various levels of competition. In field trials in 1973, 15 maize hybrids were grown at 5, 7 or 9 plants/m2. Increasing plant density increased protandry and the difference between the flowering dates of main and secondary ears, with an interaction between hybrids and density in...

Fairhead J.D., 1970: Teleseismic studies of rifting in east Africa. Proceedings of the Geological Society of London 1663: 154-155

Prakash, K.M.; Ratnagopal, P., 2011: Diffuse pachymeningeal enhancement. Journal of Clinical Neuroscience 13(8): 848, 884-848, 884

Lietsch, C.D., 1970: Immobilization of elephants. Blue Book vet. Profession, 16,1969: 33-36

Feig, S.A., 1996: Mammographic screening of elderly women. JAMA 276(6): 446-446

Anonymous, 1994: Society for the Study of Fertility, annual conference. Southampton, July 1994. Abstracts. Journal of Reproduction & Fertility. Abstract Series: 1-49

Pleasant, Barbara, 1992: The procrastinator's garden. Fast growing varieties of vegetables that mature in less than 60 days are discussed, and information on seed sources is provided.

Chattopadhyay, B., 1975: Fatal neonatal meningitis due to group B streptococci. Postgraduate Medical Journal 51(594): 240-243

Fateh-Moghadam, A.; Prechtel, K.; Wolf-Hornung, B.; Lamerz, R.; Ehrhart, H., 1974: Pulmonary form of Waldenström's macroglobulinaemia. Deutsche Medizinische Wochenschrift 99(3): 87-90