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Showing 2 results for Blood Metabolites
Influences of Different Water Temperatures on Growth Performance, Biochemical Body Composition, and Hematological Indices of Asian Sea Bass
E. Sotoudeh, I. Naserifard , A. Oujifard, V. Morshedi ,
Volume 7, Issue 2 (6-2018)
Abstract
Aims: In recent years, marine fish farming has been one of the most important aquaculture activities in tropical regions, and their cultivation has grown considerably in most parts of the world. Thus, this study aimed at investigating the effects of different water temperatures on growth performance, biochemical body composition, and hematological indices of Asian sea bass (Lates calcarifer).
Materials and Methods: In the present experimental study, 3 temperature treatments, including 20, 27, and 33°C with 3 replications for 6 weeks were run on 8 sea bass fish, which were randomly transported to 500 liter tanks and fish feeding was done, using commercial concentrate food. At the end of the experiment, the growth performance, hematological indices, and biochemical body composition of the fish were measured. The data were analyzed by SPSS 18 software, using one-way ANOVA and Duncan tests.
Findings: The final weight of the fish reared in 27°C was significantly higher than the other 2 treatments. Specific growth rate, weight gain, feed intake, and protein efficiency ratio of 27 and 33°C were significantly higher than 20°C group. Hematological parameters did not show significant differences. Among the hematological biochemical compositions, glucose and cholesterol were significantly affected by temperature. The activity of liver enzymes in the reared fish plasma and the biochemical body composition of the fish (fat, protein, ash, and moisture) were not significantly different.
Conclusion: The temperatures of 27 and 33°C are suitable for Asian sea bass farming in sea water. Hematological indices and chemical body composition of the fish are not affected by different temperatures.

Evaluation of Hull-Less Barley with or without Enzyme Cocktail in the Finisher Diets of Broiler Chickens

Volume 20, Issue 3 (5-2018)
Abstract
An experiment was carried out to study the effect of Hull-Less Barley (HLB) replaced for dietary corn at the rate of zero, 25, 50, 75, and 100% with two levels of Enzyme Cocktail (EC) supplementation (0 and 0.5 g kg-1 of diet) on performance of broiler chickens during the finisher period. Four hundred and fifty male broiler chickens aged 24-days were randomly assigned to 50 pens in a Complete Randomized Design (CRD) experiment, in a 5×2 factorial arrangement, with five replicates of 9 birds each. There were no significant differences in Average Daily Gain (ADG), Average Daily Feed Intake (ADFI), and Feed Conversion Ratio (FCR) of birds fed diets with zero, 25, 50, and 75% HLB replacement for corn, whereas the complete replacement of HLB for corn in diet significantly decreased ADG and ADFI and increased FCR. The GastroIntestinal Tract (GIT) organs relative weights and ileal chyme viscosity were significantly increased, and serum lipid metabolites concentrations significantly decreased by the increase in dietary HLB levels. A significantly shorter and thicker villi and thicker muscular layer in jejunum of chickens were observed when diet HLB level increased. The dietary EC supplementation significantly reduced the adverse effects of high dietary level of HLB on performance and GIT characteristics. It is concluded that HLB is a good alternative for broiler finisher diet, if substituted for up to 75% of corn. In addition, supplementation of EC in the finisher diet can decrease the adverse effects of high level of HLB on performance of broiler chickens.
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