The effect of two chemo-attractants and different first feeds on the growth performances of african catfish (Carias gariepinus, Burchell, 1822) at different larval stages

Bu çalışmada 4 günlük karabalık (Clarias gariepinus) larvaları bir hafta boyunca alabalık başlangıç yemi, kıyılmış sığır karaciğeri ve tatlı su midyesi, kuru tubifeks, DL-alanin ve betain katkılı alabalık başlangıç yemi, artemia nauplii ve kaynamış yumurta sarısı, kıyılmış midye eti ve kuru tubifeksten oluşan karma bir yemle beslenmiştir. Birinci aşamanın sonunda, DL-alanin ve betain ilavesinin larvaların büyüme ve yaşama oranlarında iyileştirme sağlamadığı gözlenmiştir. Çalışmanın ikinci aşamasında ise 10 günlük karabalık larvaları 30 gün boyunca alabalık toz yemi, artemia ve alabalık yemi, sadece alanin, sadece betain ve hem alanin hem de betain katkılı alabalık yemi ile beslenmiştir. Birinci aşamanın aksine, alanin ve betain ilavesi büyüme ve yaşama oranlarını arttırmıştır. Bu sonuçlar DL-alanin ve betainin erken larval dönemde herhangi bir etkiye sahip olmamasına rağmen, bu maddelerin post-larval dönemde oldukça etkili olduğunu göstermektedir.

İki atraktant madde ve bazı başlangıç yemlerinin farklı larval dönemlerde karabalık (Clarias gariepinus, Burchell, 1822)' ların büyüme performansları üzerine etkisi

In this study, 4 days old African catfish larvae were fed with trout starter diet, minced beef liver and fresh water mussel, dried tubifex, DL-alanine and betaine supplemented trout starter, artemia nauplii and a combined diet consisting of boiled chicken egg yolk, minced mussel and dried tubifex as the first feed after yolk absorption for a week. At the end of the first period, it was observed that DL-alanine and betaine supplementation did not improve the larval growth and survival compared to other feeds. In the second stage of this study, ten days old larvae of Clarias gariepinus were fed with trout starter, artemia and trout starter, only DL- alanine, only betaine and both DL- alanine and betaine supplemented trout starter diets for 30 days. In contrast to first stage, DL-alanine and betaine supplementation improved the growth and survival rates. These results showed that DL-alanine and betaine did not have any attracting role in the pre-larval stage; however, in the post-larval stage, they had a very strong effect on the survival and growth rate of the African catfish, Clarias gariepinus.

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1. Hecht, T., Appelbaum, S.: Notes on the growth of Israeli sharptooth catfish {Clarias gariepinus) during the primary nursing phase. Aquaculture, 1987; 63: 195-204.
2. Uys, W.: Investigations into the dietary requirements of Clarias gariepinus larvae and the formulation and manufacture of an artificial dry feed for use in intensive larval rearing. M. Sc. Thesis, Rhodes University, Grahamstown, 1984, 122 pp. 3. Hogendoorn, H.: Controlled propagation of the African catfish, Clarias lazera (C&V). Feeding and growth of fry. Aquaculture, 1980:21:233-241.
4. Msiska, O.V.: Rearing of the fry of the African catfish, Clarias lazera (CSV) using live and artificial feedstuffs. Isr. J. Aquacult. Bamidgeh 1981; 33: 122-127.
5. Hung, L.T., Tam, B.M., Cacot, P., Lazard, J.: Larval rearing of the Mekong catfish, Pangasius bocourti (Pangasidae, Siluridae): Substitution of Artemia nauplii with live and artificial feed. Aquat. Living Resour., 1999; 12: 229-232.
6. Roselund, G., Stoss, J., Talbot, C: Co-feeding marine fish larvae with inert and live diets. Aquaculture, 1997; 155: 183-191. 7. Kowen, W., Kolkovski, S., Hadas, E., Gamsız, K., Tandler, A.: Advances and development of micro diets for gilthead sea bream, Sparus aurata: a review. Aquaculture, 2001; 197: 107-121.
8. Dabrowski, K., Poczyczynski, P.: Comparative experiments on starter diets for grass carp and common carp. Aquaculture, 1988; 69: 317-332.
9. Verreth, J., Torreele, E., Spazier, E., Sluisen, A., Rambout, J., Booms, R., Segner, H.: The development of a functional digestive system in the African catfish Clarias gariepinus (Burchell). J. World Aquacult. Soc, 1992; 23: 286-298.
10. Verreth, J., Van Tongeren, M.: Weaning time in Clarias gariepinus (Burchell) larvae. Aquaculture, 1989; 83: 81-88.
11. Polat, A., Beklevik, G.: The importance of betaine and some attractive substances as fish feed additives. Feed Manufacturing in the Mediterranean Region Recent Advances in Research and Technology, Spain 25-27 March 1998; p. 217-220.
12. Carr, W.E.S., Blumenthal, K.M., Netherton, J.C.: Chemoreception in the pigfish, Orthopristis chrysopterus the contribution of amino acids and betaine to stimulation of feeding behaviour by various extracts. Comp. Biochem. Physiol., 1977; 58A: 69-73.
13. Koskela, J., Pirhonen, J., Virtanen, E.: Effects of attractants on feed choice of rainbow trout, Oncorhynchus mykiss, (INRA editor), Fish nutrition in practice, Biarritz (France) 24-27 June 1991; p.419-427.
14. Adron, J.W., Mackie, A.M.: Studies on the chemical nature of feeding stimulants for rainbow trout, Salmo gairdneri, Richardson. J. Fish. Biol., 1978; 12: 303-310.
15. Beklevik, G., Polat, A.: DL-alanin ve betain katkılı yemlerin gökkuşağı alabalığı (Oncorhynchus mykiss, W. 1972) fingerliklerinin büyüme ve vücut besin madde bileşenlerine etkileri. Turk. J. Vet. Anim. Sci., 2001; 25: 301-307.
16. Mackie, A.M., Mitchell, A.I.: Chemical ecology and chemoreception in the marine environment, In actualities de biochimie marine, les comptes-rendus des journess de Gabim, Paris, vol. V CNRS, 1982.
17. Mackie, A, M., Mitchell, A. I.: Studies on the chemical nature of feeding stimulants for the juvenile European eel, Anguilla anguilla (L). J. Fish. Biol., 1983; 22: 425-430.
18. Harpaz, S., Kahan, D., Galun, R., Moore, I.: Responses of freshwater prawn, Macrobrachium rosenbergii, to chemical attractants. J. Chem. Ecol., 1987; 13: 1957-1966.
19. Liley, N.R.: Chemical communication in fish. Can. J. Fish. Aquat. Sci., 1982:39:22-35.
20. Atema, J.: Functional separation of smell and taste in fish and Crustacea. In Olf. Tas. 1977; 6: 165-174.
21. Hogendoom, H., Vismans, M.M.: Controlled propagation of the African catfish, Clarias lazera (CSV), II. artificial reproduction. Aquaculture, 1980; 21: 39-53.
22. Duncan, D.: Multiple range test and multiple F-tests. Biometrics, 1955; 11: 1-42.
23. Appelbaum, S., Van Damme, P.: The feasibility of using exclusively artificial dry feed for the rearing of Israeli Clarias gariepinus (Burchell 1822) larvae and fry. J. Appl. Ichthiol., 1988; 4: 105-110.
24. Verreth, J.: History and importance of fish seed production, Nutrition and Related Ontogenic Aspects in Larvae of the African Catfish, Wageningen, 3-13, 1994.