Dietary effects of extruded feed on biochemical and hematological indices of Rainbow trout (Oncorhynchus mykiss)
Main Article Content
Abstract
The effect of 0, 70, 80, and 100% levels of extruded feed on biochemical and hematological indices of rainbow trout (Oncorhynchus mykiss) was studied in 480 fry with an average weight of 90 ± 5 g in the form of a completely randomized design. Sixteen fish were randomly collected from each treatment at the middle and end of the 90-day experiment. According to the findings, the highest amount of protein in the carcasses was related to fish fed with 85% extruded feed. Also, the protein content of the carcass was significantly different from that before consumption of extruded feed (p < 0.05). The highest amount of carcass Ca and Mn was related to 85% extruded feed. There was also a significant difference between Mn and Ca levels in carcasses before and after feeding with extruded feed (p < 0.05). There was no significant difference in albumin levels during the treatments. In the mid-period measurement, a significant difference was observed between total blood protein of the 100% pellet and 70% extruded treatment (p < 0.05). The highest value observed was 5.2 g/dl in fish fed with 70% extruded feed and the lowest was 4.24 g/dl in the group fed with 70% pellet feed. In general, the results showed that the use of high levels of extruded feed could replace pellet supplements in the diet of rainbow trout (Oncorhynchus mykiss) without any negative effect on blood indices.
Article Details
Section
How to Cite
References
Dati, F., Schumann, G., Thomas, L., Aguzzi, F. B., Audner, S., Bienvenu, J., et al. (1996). Consensus of a group of professional societies and diagnostic companies on guidelines for interim reference ranges for 14 proteins in serum based on the IFCC/BCR/CAP reference material (RM 470). *European Journal of Clinical Chemistry and Clinical Biochemistry*.
Dore, I. (1991). *Fish and shellfish quality assessment: A guide for retailers and restaurateurs*. Springer.
Johnson, A. M., Rohlfs, E. M., & Silverman, L. M. (1999). Proteins. In C. A. Burtis & E. R. Ashwood (Eds.), *Tietz textbook of clinical chemistry* (3rd ed., pp. 477–540). W. B. Saunders.
Nakano, S., Kachi, T., & Nagoshi, M. (1991). Individual growth variation of red-spotted masu salmon, *Oncorhynchus masou rhodurus*, in a mountain stream. *Japanese Journal of Ichthyology, 38*(3).
Nafisi Bahabadi, M. (2001). *Investigating the possibility of replacing flour from poultry slaughter waste flour instead of fish flour in the diet of the fattening stage of rainbow trout in brine* (PhD dissertation). Tarbiat Modares University.
Pulatsu, S., Rad, F., & Kosal, G. (2004). The impact of rainbow trout farm effluents on water quality of Karasu Stream, Turkey. *Turkish Journal of Fisheries and Aquatic Sciences, 4*, 9–15.
Statistics of Jihad Agriculture Organization Chaharmahal and Bakhtiari Province. (2015). *Chaharmahal and Bakhtiari Fisheries Office*. 110 p.
Thomas, L. (1995). *Clinical laboratory diagnostics* (1st ed., pp. 526–652). TH-Books Verlagsgesellschaft.