The effect of the chelated form of trace elements in diet on weight gain, production traits, egg specific gravity, immune system, blood parameters, liver enzymes, and progesterone hormone in Ross 308 broiler breeder chickens
Creators: name: Faghih-Mohammadi, Farhang
name: Seidavi, Alireza
name: Bouyeh, Mehrdad
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Cancer
subject: Plant Biology

description: This experiment was conducted in order to investigate the effect of the chelated form of trace elements in diet on the production traits, immunity, and blood parameters of Ross 308 broiler breeder chickens. Treatments included Treatment 1 (Negative control): Mn, Se, Cu, Fe and Zn provided as non-chelated form; Treatment 2 (Positive control): Mn, Se, Cu, Fe and Zn provided as chelated form; Treatment 3: Mn, Se, Cu, Fe and Zn provided as 50% chelated form and 50% non-chelated form; Treatment 4: Zn provided as chelated form; Treatment 5: Cu provided as chelated form; Treatment 6: Fe provided as chelated form; Treatment 7: Mn provided as chelated form; Treatment 8: Se provided as chelated form. The results showed that over the entire production period egg production and egg mass were affected by the experimental treatments (<i>p</i> &lt; 0.05) and that the highest levels were observed in treatments 2 and 3. The chelated form of trace elements had a significant effect, increasing the number of settable eggs and decreasing the unsettable eggs over the entire production period (<i>p</i> &lt; 0.05). Average egg weight over the entire period was not significantly changed (<i>p</i> &gt; 0.05). The highest percentage of 2-yolk, thin shell, broken and small eggs was observed in 61st week of age significantly (<i>p</i> &lt; 0.05). The experimental treatments had a significant effect on the immunity and the antibody titre against Newcastle disease showed a significant increase in treatments 2 and 8 (<i>p</i> &lt; 0.05). The concentration of glucose, triglyceride, progesterone, AST and ALT were affected by the experimental treatments (<i>p</i> &lt; 0.05). In conclusion, the use of a basic diet containing Zn, Fe, Cu, Se and Mn in the chelated form or the use of a basic diet containing mineral elements of Zn, Fe, Cu, Se and Mn with 50% non-chelated form and 50% in the chelated form improves the performance of production traits, immunity and blood parameters of Ross 308 broiler breeder chickens.HighlightsChelated form of trace elements in the diet led to improvement in productive traits, immune response and blood parameters compared to the mineral formBasic diet containing mineral elements of Zn, Fe, Cu, Se, and Mn, 50% in the non-chelated form and 50% in the chelated form led to a significant improvement in egg production, egg mass, egg weight and egg specific gravityChelated form of trace elements in the diet led to a decrease in the number of abnormal eggs including double-yolk, thin shell, broken, deformed, and small eggs Chelated form of trace elements in the diet led to improvement in productive traits, immune response and blood parameters compared to the mineral form Basic diet containing mineral elements of Zn, Fe, Cu, Se, and Mn, 50% in the non-chelated form and 50% in the chelated form led to a significant improvement in egg production, egg mass, egg weight and egg specific gravity Chelated form of trace elements in the diet led to a decrease in the number of abnormal eggs including double-yolk, thin shell, broken, deformed, and small eggs