Effects of Supplementary Mineral Amino Acid Chelate (ZnAA - MnAA) on the Laying Performance, Egg Quality and Some Blood Parameters of Late Laying Period Layer Hens

Yılmaz Dikmen B., Sozcu A., İpek A., Şahan Ü.

KAFKAS UNIVERSITESI VETERINER FAKULTESI DERGISI, vol.21, no.2, pp.155-162, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 2
  • Publication Date: 2015
  • Doi Number: 10.9775/kvfd.2014.11889
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.155-162
  • Keywords: Chelate, Egg production, Egg quality, Mn-Aminoacid, Zn-Aminoacid, DIETARY ZINC, EGGSHELL QUALITY, ORGANIC ZINC, MANGANESE, COPPER, TRAITS, METALS, GROWTH, LYSINE, BONE
  • Bursa Uludag University Affiliated: Yes


This study was carried out to determine the effect of supplementary mineral amino acid chelate (ZnAA - MnAA) on the performance, egg quality and some blood parameters of late laying period layer hens. A total of 320, 64 wk of age Lohmann LSL laying hens, were divided into 4 groups with four replicates with 20 hen within each group. The control group was fed with basal diet and treatment groups were fed basal diet containing 1, 2 and 4 g/kg mineral amino acid chelate (ZnAA - MnAA) for 12 weeks. At the end of the experiment, there were no statistically difference among the groups in live weight, feed intake, feed conversion ratio, damaged egg ratio, mortality (P>0.05). Egg weight (P<0.01), albumen weight (P<0.01), shell weight (P<0.05), yolk index (P<0.01), yolk ratio (P<0.01), albumen ratio (P<0.01), and shell ratio (P<0.05) were found significant. The dietary supplementation of amino acid chelate (ZnAA - MnAA) were not significantly affected serum total protein, glucose, total cholesterol, Calcium (Ca), Phosphorus (P), Zinc (Zn) (P>0.05). The only statistical difference was found on the plumage score of the back region of hens (P<0.05). Also plumage coloring difference was statistically significant among groups (P<0.01). In conclusion, the supplementation of 1 g/kg mineral amino acid chelate (ZnAA-Mn AA) increased egg weight and had favourable effects on interior and exterior egg quality of laying hens in the late laying period.