Effect of dietary supplementation of zinc proteinate on performance, egg quality, blood biochemical parameters, and egg zinc content in White Leghorn layers

• Published in: Tropical animal health and production 2022-06, Vol.54 (3), p.160-160, Article 160
• Main Authors: Kannan, A., Prakash, B., Paul, S. S., Raju, M. V. L. N., Rama Rao, S. V., Shanmugam, M.
• Format: Article
• Language: English
• Subjects: Animal Feed - analysis; Animals; Antioxidants; Antioxidants - metabolism; Biomedical and Life Sciences; Chickens - metabolism; Cholesterol; Conversion ratio; Diet; Diet - veterinary; Dietary Supplements; Egg production; Egg Shell - metabolism; Eggs; Feed conversion; Female; Life Sciences; Low density lipoprotein; Ovum; Parameters; Physical growth; Regular Articles; Soybeans; Superoxide dismutase; Triglycerides; Veterinary Medicine/Veterinary Science; Zinc; Zoology
• ISSN: 0049-4747; 1573-7438
• DOI: 10.1007/s11250-022-03162-2

A study was conducted to investigate the effects of zinc proteinate (Zn-P) on laying performance, egg quality, antioxidant indices, and egg zinc content in laying hens from 38 to 49 weeks of age. A total of 150 White Leghorn layers were randomly assigned to five treatments, each with six replicates with five birds per replication. Dietary treatments included a corn-soybean meal–based basal diet with no zinc addition and basal diet supplemented with Zn-P at 40, 80, 120, or 160 mg/kg of feed for 12 weeks. The analyzed zinc concentrations of the five diets were 29.5, 70.8, 110.2, 147.5, and 187.5 mg Zn/kg, respectively. Dietary Zn-P supplementation had no effect on feed intake and egg production. However, raising the zinc level improved egg weight ( P