Effect of dietary supplemental vitamin C and zinc sulfate on productive performance, egg quality traits and blood parameters of laying hens reared under cold stress condition

Abstract

This study was conducted to investigate the effects of dietary supplemental vitamin C and zinc sulfate on performance, egg quality characteristics and blood parameters of laying hens reared under cold stress condition. A total of 144 Lohmann-LSL Lite laying hens (65 weeks old) were allotted to 24 groups. Based on a 2 × 2 factorial arrangement, four corn-soybean-based diets (2750 kcal/kg ME and 14.69% CP) including two levels of vitamin C (0, 240 mg/kg) and two levels of zinc sulfate (0, 40 mg/kg) were assigned to hens with six replicate cages (n = 6) during 3-month experimental period. The data were analysed in a completely randomized design using GLM procedure of SAS. Increased egg weight (EW), egg mass (EM) and albumin weight egg and heterophil to lymphocyte ratio, and reduced FCR were observed in hens fed the zinc-included diet (P < 0.05). Supplementing the diet of laying hens, with zinc sulfate increased egg mass and improved FCR. Significant interaction between supplemental vitamin C and zinc sulfate was detected on egg Haugh unit and shell thickness, so that the best results were observed when the diet of laying hens was supplemented by 240 mg/kg vitamin C.

Effect of organic zinc supplementation into basal diets on productive performance of laying hens

“…The Zn is figured out in the diet of poultry in two kinds (inorganic and organic). The form of inorganic grade as zinc oxide (ZnO) (Fawaz et al, 2019) or zinc sulfate (ZnSO 4 ) (Rajabi and Torki, 2021) while organic Zn sources like Zn methionine (Zn-Me) and Zn amino acid complex (ZnAA) (Li et al, 2019). When comparing between two forms of Zn will notice organic trace minerals are chemical complexes made by ions of metal linked to organic material which have complex of polysaccharides, amino acids and peptides, or supply biological availability to metal ions also increase solubility and stability (Gayathri and Panda, 2018;Saeed et al, 2021).…”

Zinc supplementation improves antioxidant status, and organic zinc is more efficient than inorganic zinc in improving the bone strength of aged laying hens

“…It has also been reported that zinc supplementation increases eggshell quality since it is an element of the carbonic anhydrase enzyme, supplying carbonate ions during eggshell formation (Ogbuewu & Mbajiorgu, 2022). Moreover, it has been indicated that the secretion of alkaline phosphatase is decreased under stress conditions, and this enzyme interacts with zinc in bone calcium storage (Rajabi & Torki, 2021).…”

Environmental Stress in Chickens and the Potential Effectiveness of Dietary Vitamin Supplementation

“…Similar diet administered by Khukhodziinai et al (2021) resulted in optimum performance in layers challenged with CS (Sahin and Sahin, 2001). Rajabi and Torki (2021) found that the dietary supplementation of 240 mg/kg vitamin C and zinc improved the egg quality of layers challenged with cold temperature between 13 and 15 • C. Sahin and Sahin (2001) concluded that the depressive effect of CS in chickens can be alleviated by vitamin C and chromium. Inconsistent findings have also been reported on the modulatory roles of vitamin C in chickens subjected to high SD (Jahanian and Mirfendereski, 2015;Shewita et al, 2019).…”