2017
DOI: 10.1590/1806-9061-2016-0455
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Ovarian Morphology and Egg Quality Traits of Egyptian Selected Strain for Egg Production Compared with Commercial Laying Strains

Abstract: An experiment was conducted to evaluate the effect of selection for egg production performance of Cairo L-2 strain, as a local layer strain, after five generations of selection on productivity, ovarian morphology and some egg quality traits versus commercial Lohmann Brown-Lite (LBL) strain. The performance in the 5th generation was evaluated in Cairo L-2 and LBL strains for live body weight at sexual maturity (BWSM), age at sexual maturity (ASM), first egg weight (FEW), ovarian morphology, ovarian follicles nu… Show more

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Cited by 8 publications
(13 citation statements)
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“…There has been a great increase in the demand, during the past years, for poultry production including meat and egg production associated with its low cost, good nutritional profile and suitability for further processing. This growing demand in poultry products has led to progressive increases in genetic selection not only for producing fast-growing birds [1,2] and increase egg production from egg type chicken [3] but also to use of poultry and chick embryos in medical research and pharmaceutical industry [4]. Therefore, it is necessary to know the environmental factors that affect poultry production efficiency and growth performance.…”
Section: Mini Reviewmentioning
confidence: 99%
“…There has been a great increase in the demand, during the past years, for poultry production including meat and egg production associated with its low cost, good nutritional profile and suitability for further processing. This growing demand in poultry products has led to progressive increases in genetic selection not only for producing fast-growing birds [1,2] and increase egg production from egg type chicken [3] but also to use of poultry and chick embryos in medical research and pharmaceutical industry [4]. Therefore, it is necessary to know the environmental factors that affect poultry production efficiency and growth performance.…”
Section: Mini Reviewmentioning
confidence: 99%
“…Egg quality includes various external and internal traits such as egg weight, length, width, shell weight, shell thickness, albumen weight, height, Haugh unit, and yolk weight. External qualities, such as shell weight and thickness, play a considerable role in the quality of eggs and the reproductive of chickens [7,8]. Additionally, shell quality is also important for ensuring the safety and longevity of the egg during storage and transportation.…”
Section: Introductionmentioning
confidence: 99%
“…Egg weight increases with the age of the hen throughout the egg production cycle [8,15]. The reproductive endocrine system of hens is influenced by factors like daylight length and climate temperature, which affect the productivity characteristics and quality of eggs [16].…”
Section: Introductionmentioning
confidence: 99%
“…IO on different sites of the egg has been carried out routinely by many researchers (Maiorano et al, 2012) by some exogenous solutions, for example carbohydrates (Tako et al, 2004), proteins, amino acids (Ohta et al, 2001;Bhanja et al, 2005), vitamins (Al-Shammari, 2012), minerals, hormones, synbiotics or antibiotics. IO with aqueous PEs has two po-tential targets: firstly, as biological growth promoters, due to their contents of natural basic nutrients (proteins, carbohydrates, fat, vitamins, trace elements), which are regarded as primary ingredients of plants (Grashorn, 2010); secondly, as precautionary and antioxidant promoters, due to their biological EO (essential oil) contents and other bioactive components as plant secondary metabolites (Kabera et al, 2014).…”
Section: Introductionmentioning
confidence: 99%