Rearing larvae and juveniles of rainbow trout with different amino acid nutrition
DOI:
https://doi.org/10.31548/dopovidi2020.06.012Keywords:
rainbow trout, juveniles, fish feeding, compound feeds, lysine, methionine, productivity, economic efficiencyAbstract
The article considers the efficiency of using complete compound feeds with different levels of lysine and methionine in rearing larvae and juveniles of rainbow trout. The purpose of the experiment was to establish the effect of different amino acid levels in nutrition of juvenile trout on its productivity. For this purpose, five experimental groups were formed by the method of analogues. The experiment lasted 35 days and was divided into two periods: equalizing (5 days) and main (30 days). During the equalizing period, the experimental fish consumed feed of the control group. In the main period, the levels of lysine and methionine in experimental feeds for different experimental groups of trout ranged from 2.9 to 3.3% and from 0.95 to 3.15%, respectively. It is proved that increasing the content of lysine and methionine in feed for larvae and juveniles of rainbow trout to the levels of 3.2 and 1.1%, respectively, promotes increase in their weight by 10.7% (p <0.01) and growth intensity - by 6.4-11.1%, while further increase in these amino acids content in the feed reduces the productivity of fish. Polynomial equations for determining the juvenile fish weight at any stage of rearing at a high level of determination for each of the experimental groups have been calculated. It was found that with an increase in the content of lysine and methionine in feed to the levels of 3.2 and 1.1%, respectively, reduces feed costs per 1 kg of weight gain in trout larvae and juveniles by 4.1%, and a further increase in levels of these amino acids to 3.3 and 1.15%, respectively, increase this index by 1.1%. The experimental fish survival ranged from 83.9 to 85.1%. In the production of trout according to the criteria of maximum productivity and to the economic optimization criteria, it is recommended to use complete feed with the level of lysine - 3.2% and methionine - 1.1% for feeding trout larvae and juveniles.
References
Kanydev A. N. (1985). Ynstruktsyia po razvedenyiu raduzhnoi forely. Moskva : VNYYPRKh, 59 s.
Plokhynskyi N. A. (1969). Rukovodstvo po byometryy dlia zootekhnykov. M. : Kolos, 246 c.
Sherman I.M., Hrynzhevskyi M.V., Zheltov Yu.O. (2002). Naukove obhruntuvannia ratsionalnoi hodivli ryb: uchebnoe posobye. Vyshcha osvita. S. 128.
Shcherbyna M.A., Hamyhyn E.A. (2006). Kormlenye ryb v presnovodnoi akvakulture. M.A. Shcherbyna,. M.: VNYRO, 360 s.
Bae J.‐Y. Ok I.‐H., Lee S., Hung S. S. O. еt al (2011). Reevaluation of dietary methionine requirement by plasma methionine and ammonia concentrations in surgically modified rainbow trout, Oncorhynchus mykiss. Asian-Australasian Journal of Animal Sciences- № 24(7). Р. 974-981.
https://doi.org/10.5713/ajas.2011.10189.
Barnes М.Е., Brown M. L., Rosentrater K. A. (2012). Juvenile rainbow trout responses to diets containing distillers dried grain with solubles, phytase, and amino acid supplements. Open Journal of Animal Sciences.№ 2 (2). P. 69 -77.
https://doi.org/10.4236/ojas.2012.22011.
Bureau D. P., Encarnação P. M. (2006). Adequately Defining the Amino Acid Requirements of Fish: The Case Example of Lysine. Materiales del VIII Simposium Internacional de Nutrición Acuícola. 15-17 Noviembre. Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México. Р. 29-54.
Cowey C. B. (1992). Nutrition: estimating requirements of rainbow trout. Aquaculture. № 100. Р. 177-189.
https://doi.org/10.1016/0044-8486(92)90370-Z.
(2016). Food and Agriculture Organization of the United Nations. El estado mundial de la pesca y la acuicultura. Contribución a la seguridad alimentaria y la nutrición para todos. Roma: Food and Agriculture Organization of the United Nations. p. 224.
Jobling M. (2016). Fish nutrition research: Past, present and future. Aquaculture International. № 24. Р. 767-786.
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