Effect of production system and flock age on egg quality and total bacterial load in commercial laying hens

Samiullah, -; Roberts, J. R.; Chousalkar, Kapil K.

doi:10.3382/japr.2013-00805

Cited by 62 publications

(43 citation statements)

References 29 publications

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“…The eggshell is essential in providing the shape of an egg to assure the safe packaging. Samiullah et al (2014) found that egg weight, shell weight and shell thickness decreases with flock age. The eggs internal quality albumin heights decreased with flock age.…”

Section: Resultsmentioning

confidence: 97%

The Influence of Hairline Crack Eggs on Hatchery Parameters and Chicks Performance.

Jabbar¹,

Hameed²,

Yousaf³

et al. 2019

jwpr

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The purpose of study was to evaluate the influence of hairline crack eggs on hatchery parameters and later life of chicks. The study was conducted from October to December 2018 at Chakri hatchery Salman Poultry Pvt. Ltd Pakistan to evaluate the outcomes of hairline crack eggs. The shell of the eggs is essential in providing the shape of an egg and ensuring the safe packaging. The defects like breakage of this packaging increase the risk of microbial contamination. In this experiment, the crack eggs like hairline crack eggs were detected by Sanovo STAALKAT Alpha 125 Machine number JB 11786. The eggs were collected from eighteen different breeder farms. Each group contained (n=50,000) eggs. The hairline crack eggs were compared with normal eggs for hatchability, candling, putrification/blasting and dead in shell. Significant difference was found for hatchability, candling, blasting/putrification and dead in the shell for normal and hairline crack eggs. The highest hatchability (49.07±0.51) and lowest candling (9.98±0.064) for hairline crack eggs were found for AP27 flock due to young age and good quality eggshell. The lowest hatchability was found for SP117 flock which was the oldest flock having thin egg shells. The blasting/putrification and dead in the shell were significantly higher for hairline crack eggs as compared to normal eggs of same flocks. The lowest blasting was found for AP27 flock. On a simple hatch debris analysis, the highest mortality, infertile, contaminated eggs were for first and third weeks. The higher mortality were found for hairline crack eggs as compared to the normal eggs for SSF5 flock. The water loss, chick yield and culling chicks percentage were also significantly better for normal eggs compared to hairline crack eggs. The hairline crack eggs of young flocks were better than old flocks due to a better quality of eggs shell. The chicks from normal eggs were also significantly better than chicks from hairline crack eggs in terms of mortality, feed intake, weight gain and FCR. The hairline crack eggs are the source of contamination. Present study recommended that hairline crack eggs do not use for incubation.

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Section: Resultsmentioning

confidence: 97%

The Influence of Hairline Crack Eggs on Hatchery Parameters and Chicks Performance.

Jabbar¹,

Hameed²,

Yousaf³

et al. 2019

jwpr

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“…Egg weight increased with age in the CC and EC systems, but, in the FR system, increased with age and then decreased. However, Samiullah et al (3) found that egg weight was higher in the CC system for the whole laying period, but in the FR system egg weight increased at the beginning of the laying period and then remained constant. Zemkova et al (12) observed that egg weight in the outdoor system hens decreased until 59 weeks of age and then increased, but Neijat et al (29) found that shell thickness, shell ratio, yolk weight, albumen weight, and shell weight of laying hens in enriched-cage and conventional-cage systems were not different, and there was a cage × period interaction for eggshell weight and it was significantly higher in the enriched-cage than in the conventional-cage system in the late production period.…”

Section: Discussionmentioning

confidence: 99%

“…The lowest shell ratio was found in the CC system at 60 weeks of age. However, Samiullah et al (3) found that yolk color, egg weight, shell thickness, shell weight, eggshell ratio, and Haugh unit were higher in the conventional-cage system than the free-range system and increased with flock age, except for Haugh unit.…”

Section: Discussionmentioning

confidence: 99%

“…Van Den Bran et al (4) also found that eggshell quality decreased with increased age in the cage system whereas, in the outdoor system, eggshell quality remained constant or even increased. Samiullah et al (3) observed that breaking strength was higher in the free range system than in the conventional cage system at 45 and 55 weeks of age.…”

Section: Discussionmentioning

confidence: 99%

“…Previously published results reported that housing systems of hens had significant effects on yolk color and darker yolk color was reported variously in the cage system (3,5), the barn system (11), the deep litter system (14), or in the FR system (22). The pigments in the feed affect yolk color and dark colored yolk would be expected in the FR system because the hens also feed on grass (4).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of different housing systems and age of layers on egg quality characteristics

Dikmen¹,

İpek²,

Şahan³

et al. 2017

Turk J Vet Anim Sci

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The material for the current research was obtained from 480 layers (Lohmann Brown) housed in conventional-cage (CC), enriched-cage (EC), and free-range (FR) production systems between 22 and 60 weeks of age. A total of 720 eggs were analyzed for external and internal egg quality traits.The three housing systems were located within the same research unit of Uludağ University. Two cage systems, CC and EC, were installed in a windowed and fan-ventilated cage hen house with both cage types in the same room. The FR system was located 120 m from the cage hen house.The CC system consisted of galvanized wire cages (50 × 45 × 45 cm) with a trough-type galvanized feeder, egg belt, manure belt, and nipple drinker. Each CC cage provided a total of 562.5 cm 2 floor area per hen.The EC system cages met the requirements of EU Directive 1999/74/EC. The EC system consisted of 2 tiers, and each tier consisted of 2 cages (4 EC cages). The EC

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Commercial Free-Range Egg Production Practices

Newberry

2017

Egg Innovations and Strategies for Improvements

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Effect of production system and flock age on egg quality and total bacterial load in commercial laying hens

Cited by 62 publications

References 29 publications

The Influence of Hairline Crack Eggs on Hatchery Parameters and Chicks Performance.

The Influence of Hairline Crack Eggs on Hatchery Parameters and Chicks Performance.

Impact of different housing systems and age of layers on egg quality characteristics

Commercial Free-Range Egg Production Practices

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