نتایج جستجو برای: egg shell

تعداد نتایج: 93795  

ژورنال: علوم آب و خاک 2003
جواد پوررضا, , سعید انصاری, , محمد پاکدل, ,

In a 3×3 factorial experiment, 90 72-week-old native breeder hens of Isfahan were kept in cages (one bird/cage). The effect of three levels of dietary calcium (3.27, 2.62, and 1.96%) and three levels of dietary available phosphorus (0.25, 0.20, and 0.15%) on egg production and egg shell traits were investigated. Each treatment contained five replicates of two birds (10 birds per treatment). The...

B. Wardecka E. Juszczuk-Kubiak G. Zieba J. Poloszynowicz K. Jaszczak R. Olszewski S.J. Rosochacki,

Two breeds of chickens were used to develop reference family and detect QTLs affecting egg quality traits: cocks of a native Polish breed Green-Legged Partidgenous (GlP) and hens of Rhode Island Red (RIR). During the first 100 days of the laying period, the GlP hens lay about 40 eggs weighting on average 50 g, whilst the RIR flock laid 83 eggs with a mean weight of 60 g. QTL analysis of egg qua...

جواد پوررضا, , سعید انصاری, , محمد پاکدل, ,

In a 3×3 factorial experiment, 90 72-week-old native breeder hens of Isfahan were kept in cages (one bird/cage). The effect of three levels of dietary calcium (3.27, 2.62, and 1.96%) and three levels of dietary available phosphorus (0.25, 0.20, and 0.15%) on egg production and egg shell traits were investigated. Each treatment contained five replicates of two birds (10 birds per treatment). The...

Journal: :چغندرقند 0
علیرضا آذربایجانی آذربایجانی هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان اصفهان شهاب الدین مشرف هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان اصفهان اکبر اسدیان هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان اصفهان

this experiment carried out to evaluate replacing effects of oyster shell (os) with filter cake (fc) of sugar beet industry on performance and quantity and quality of egg in  laying hens .in this trial the filter cake in two physical forms of powder and pellet in  five levels of 0, 25, 50, 75, and 100% replaced for oyster shell. each treatment had 3 replications. the experiment lasted 3 periods...

2009
F. H. de Witt

A study was conducted to determine the influence of different particle size limestone in layer diets on egg production and eggshell quality during the later stages of egg production (>54 weeks of age). Calcitic limestone (360 g Ca/kg), consisting of small (<1.0 mm), medium (1.0 2.0 mm) and large (2.0 3.8 mm) particles were obtained from a specific South African source that is extensively used i...

2014
Metin Sabuncu Mete Akdoğan

The goal of this study was to measure the thickness of egg shells without any contact and by utilizing a nondestructive method that sends infrared light beam on the egg. We obtain measurement resolutions on the order of 7 μm up to a penetration depth of 1.7 mm from the actual surface of the egg shell. The measurement results we obtained show that optical coherence tomography can be used to accu...

Journal: :Anais da Academia Brasileira de Ciencias 2013
Qiang Wang Xiaolin Wang Zikui Zhao Jialiang Zhang Shunxing Jiang

A new type of turtle egg fossil was established: Emydoolithus laiyangensis oogen. et oosp. nov.. Based on its elliptical morphological shape, rigid eggshells, and eggshell characteristics, it is different from other types of round chelonian egg fossils. It is the second chelonian egg fossil found in Cretaceous in China. This discovery shows the Laiyang ecosystem in Late Cretaceous is more diver...

Journal: :infection, epidemiology and medicine 2016
shiva modirrousta reza shapouri sama rezasoltani hamed molaabaszadeh

background: campylobacter spp. are the common pathogens that infect human beings via food. these bacteria are vibrio and have been implicated in abortion. serotyping is the best way for typing with penner scheme. c. jejuni and c. coli have 65 serotypes. c. coli is common in birds and dogs. due to high rate of prevalence of campylobacter in red-meat, chicken-meat and egg-shell, a suitable method...

Journal: :Nature communications 2010
Gerald Grellet-Tinner Lucas E Fiorelli

Although several late Cretaceous sauropod colonial nesting sites have been discovered nearly on every continent during the last few decades, no studies have been performed to determine the factors that underpinned the choice of these specific sites. Here, we report the first definitive evidence of a group of sauropods that nested repetitively and purposely at a Cretaceous hydrothermal site at S...

2016
Gifford Miller John Magee Mike Smith Nigel Spooner Alexander Baynes Scott Lehman Marilyn Fogel Harvey Johnston Doug Williams Peter Clark Christopher Florian Richard Holst Stephen DeVogel

Although the temporal overlap between human dispersal across Australia and the disappearance of its largest animals is well established, the lack of unambiguous evidence for human-megafauna interactions has led some to question a human role in megafaunal extinction. Here we show that diagnostic burn patterns on eggshell fragments of the megafaunal bird Genyornis newtoni, found at >200 sites acr...

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