Serum biochemistry profile of laying hens fed diets with fish waste oil

Abstract

The present study aimed to evaluate increasing levels of fish waste oil in diets for laying hens on serum biochemistry profile. 192 Hisex White laying hens at 29 weeks of age were used, with water and food ad libitum. The experimental design was completely randomized consisting of eight treatments corresponding to the inclusion levels of fish waste oil (0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5%) in the diets, with four replicates of six birds each. Data collected were subjected to polynomial regression at 5% of significance. Significant differences (P<0.05) were observed in triglycerides, glucose, total cholesterol, and uric acid. These parameters presented a decrease when hens fed diets with higher level of fish waste oil. The results of the present study indicated that the inclusion of fish waste oil caused a significant effect in the serum biochemical profile of laying hens, especially in glucose, triglycerides, total cholesterol, and uric acid concentrations. The inclusion level of 3.5% of fish waste oil caused larger disequilibrium in the serum biochemical profile of laying hens.

Production Performance, Egg Quality Characteristics, Fatty Acid Profile and Health Lipid Indices of Produced Eggs, Blood Biochemical Parameters and Welfare Indicators of Laying Hens Fed Dried Olive Pulp

“…The current study revealed that the addition of OP in hens' diet has no adverse effect on the birds' liver and kidney function, as indicated from the evaluation of the biochemical parameters selected. The higher serum uric acid concentration recorded to the layers that consumed diets containing OP at the rate of 3%, 5% and 6% compared to the CON hens is of no clinical significance since it remained within the reported normal ranges of 2-7 mg/dL for this parameter [72]. In accordance with our results, other authors also did not notice any dietary impact of OP on hens' serum concentration of cholesterol [18], triglycerides [19] or both [2,20].…”