China Animal Husbandry and Veterinary Medicine ›› 2025, Vol. 52 ›› Issue (5): 2012-2022.doi: 10.16431/j.cnki.1671-7236.2025.05.007

• Nutritionand Feed • Previous Articles    

Effects of Dietary Organic Manganese-Iron-Copper-Zinc Compound Preparations on the Production Performance,Blood Biochemical Indices, Follicle Development and Tibia Quality of Laying Hens

WANG Beibei1,2, HAO Erying2, ZHANG Haihua3, ZHANG Haijun1, QIU Kai1, WU Shugeng1   

  1. 1. Key Laboratory of Feed Biotechnology of Ministry of Agriculture & Rural Affairs, Laboratory of Quality & Safety Risk Assessment for Animal Products on Feed Hazards of Ministry of Agriculture & Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China;
    3. Hebei Key Laboratory of Specialty Animal Germplasm Resources Exploration and Innovation, Hebei Normal University of Science & Technology, Qinhuangdao 066004, China
  • Received:2024-08-28 Published:2025-04-27

Abstract: 【Objective】 This research was aimed to evaluate the effects of dietary organic manganese-iron-copper-zinc compound preparations on the production performance,blood biochemical indexes,follicle development and tibia quality of laying hens,so as to provide reference for the scientific application of organic manganese-iron-copper-zinc compound preparations in diets of laying hens during the laying peak period.【Method】 A total of 270 Jingfen hens aged 38 weeks were randomly assigned to 3 dietary groups,each with 6 replicates of 15 hens.Hens in control group were supplied with corn-soybean basal diet,and hens in experimental groups were fed the basal diet supplemented with 50% NCR (1994) recommended amounts of organic manganese-iron-copper-zinc compound preparation products 1 and 2 (OT1 and OT2),respectively.This study included a 1-week pre-trial period followed by a 12-week experimental period.The egg production was recorded every day,and the feed weekly.At weeks 4,8 and 12,egg quality was determined.At the end of the feeding,one layer per replicate was selected,blood sample was collected,blood routine,blood biochemical and antioxidant indices were measured,and the ileum immunity indices,oviduct and follicular development indexes and tibia quality were determined after slaughter.【Result】 Compared with control group,OT1 significantly increased the eggshell thickness of laying hens at weeks 8 (P<0.05);OT1 and OT2 significantly decreased the platelet count and increased total protein (TP) content in serum of laying hens (P<0.05),OT2 significantly increased the alkaline phosphatase (ALP) activity in serum of laying hens (P<0.05),OT1 significantly increased the glutathione peroxidase (GSH-Px) activity in serum of laying hens (P<0.05).OT1 and OT2 significantly increased immunoglobulin A (IgA) content in ileum mucosa of laying hens (P<0.05),OT2 significantly increased IgG content in ileum mucosa of laying hens (P<0.05).OT1 and OT2 had no significant effect on the oviduct and follicular development of laying hens (P>0.05).OT1 and OT2 significantly increased the tibial length of laying hens (P<0.05).【Conclusion】 Under the conditions of this experiment,the organic manganese-iron-copper-zinc compound preparation had no effect on the production performance of laying hens but improved the antioxidant capacity in serum,intestinal immune function and tibia quality.Among the two preparations,organic manganese-iron-copper-zinc compound preparation product 1 demonstrated superior efficacy.

Key words: organic manganese-iron-copper-zinc compound preparation; laying hens; production performance; follicular development; tibia

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