Effects of dietary lipid on the hematology of channel catfish, Ictalurus punctatus
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Abstract
Juvenile channel catfish were fed diets containing either soybean oil, menhaden oil, beef tallow, or a combination of these three lipid sources. After 90 days, total erythrocyte, leucocyte, and thrombocyte counts, hematocrit, mean corpuscular volume, plasma recalcification time, erythrocyte osmotic fragility, total serum iron, and iron-binding capacity were measured. Total erythrocyte counts, leucocyte counts, and mean corpuscular volume were not significantly different (P < 0.05) among dietary groups. However, fish fed the menhaden oil diet had significantly lower (P < 0.05) hematocrits, higher thrombocyte counts, and higher serum iron concentrations. They also had the highest concentration of n − 3 fatty acids in the pronephros tissue and their erythrocytes were the least susceptible to osmotic lysis. Catfish fed the beef tallow diet had the lowest level of n − 3 fatty acids in pronephros tissue and their erythrocytes were the most susceptible to osmotic lysis. Results suggest that dietary lipids affect several hematological factors of cultured channel catfish.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Effects of dietary lipid on the hematology of channel catfish, Ictalurus punctatus |
| Series title | Aquaculture |
| DOI | 10.1016/S0044-8486(96)01410-X |
| Volume | 147 |
| Issue | 3-4 |
| Year Published | 1996 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Leetown Science Center |
| Description | 9 p. |
| First page | 225 |
| Last page | 233 |
| Google Analytic Metrics | Metrics page |