Effects of Zinc Lactate on the Production Performance and Eggshell Quality in Laying Hens
Abstract：The objective of the present study was to investigate the effects of zinc lactate on the production performance and eggshell quality of laying hens. A single factorial randomized experimental design was adopted. 1600 360-day Roman pink shell layers were randomly assigned to 4 treatments based on body weight with 8 replicate cages of 50 laying hens in each. The basal diet was the corn-soybean meal diet. Treatment I was supplemented with Zinc sulfate monohydrate in the basal diet at 60mg/kg (Zinc basis), treatment 2 was supplemented with Zinc lactate in the basal diet at 60mg/kg(Zinc basis), treatment 3 was supplemented with Zinc lactate in the basal diet at 40 mg/kg (Zinc basis) and treatment 4 was supplemented with Zinc in the basal diet at 60mg/kg(the half Zinc of Zinc sulfate monohydrate and Zinc lactate). The results showed that substitution Zinc lactate for zinc sulfate in the diet of laying hens could reduce the average broken egg rate and increase the average eggshell strength and the average eggshell thickness significantly (P〈0.05) and it did not affect the average egg laying rate, the average egg weight, average daily feed intake and average feed-egg ratio significantly(P〉 0.05).
Keywords：Zinc lactateLaying hensProduction performanceEggshell quality
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 35-37 )