Production Performance In Relation To Blood Parameters In Two Different Genotypes Of Egyptian Chickens (Sinai And Silver Montazah).
Authors: E.M Abou-Elewa , Soltan M.E. , Farrag S.A. 
Published: January 2025

Background: Hematological parameters in chickens have been shown to be influenced by several factors,
physiological, genotypical conditions and other environmental conditions. The relationship between complete
blood count (CBC) parameters and egg production traits in chickens is an area of significant interest in poultry
research. understanding these relationships can provide insights into the health and productivity of laying hens.
Materials and Methods: Recent study took place to examine the relationship between production performance
and some blood parameters in two different genotypes of Egyptian chickens (Sinai and Silver Montazah), blood
parameters which studied, were count of white blood cell (WBC), count of red blood cell (RBC), hemoglobin
(HGB), hematocrit (HCT), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean
corpuscular hemoglobin concentration (MCHC), and count of platelet (PLT), and some of egg production traits
were age at sexual maturity (ASM), Egg production in the first 90th days (EN90), average weight of the first five
eggs (EWsm), number of days to produce the first five eggs produced (D5egg), body weight at the first egg
(BWsm), body weight at 35 weeks (BWm),average weight of five eggs at 35 weeks (EWm), average clutches
length (CLS),and average relax days between clutches (Relax L.). Data collected individually and analyzed using
appropriate methodology.
Results: The main results can be summarized as follows:
• Sinai hens were higher in most means of blood parameters (RBC, HGB, HCT, MCV, MCH, and MCHC)
compared to Silver Montazah hens, except for two blood parameters (WBC, and PLT) Silver Montazah hens
were higher than Sinai hens. All of differences between different two local chicken strains (Sinai and Silver
Montazah) were not significant except (PLT.) was highly significant differences.
• Silver Montazah hens were higher in most means of production traits mean (ASM, EN90, EWsm, EWm, BWsm,
BWm, Days5eggs, CLS.) compared to Sinai hens, except (Relax L) Sinai hens were higher than Silver Montazah
hens. All of differences between different two local chicken strains (Sinai and Silver Montazah) were not
significant except for (EWSM) there were significant differences.
• Simple correlation coefficients values between blood parameters and studied production traits studied in both
Strains were insignificant and ranged between 0.003 (between EN90 and MCV) and 0.309 (between ESM and
MCHC). This means that there was a weak relation between these blood parameters and egg production traits.
• The Dendrogram lined by clustering analysis clearly reflected the results obtained from analysis of variance
in current study, since all either main or sub-clusters included individuals form both studied strains.
Conclusion: The CBC parameters of chickens play significant roles in determining egg production traits,
ensuring the overall health of laying hens. Further research is needed to clarification the specific mechanisms by which these blood parameters interact with environmental and genetic factors influencing egg production.