Influence of Genotype and Hen Age on the Egg Shape Index

Shaker, Ahmed Sami

doi:10.11648/j.ijbbmb.20170206.12

Cited by 9 publications

(8 citation statements)

References 17 publications

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“…Eggs can be classified according to their shape into long, normal, and round. Long eggs have a shape index less than 72, normal eggs between 72 and 76, and round eggs greater than 76 [41]. The present study found uniformly normal oval eggs with a mean shape index between 75% and 76%.…”

Section: Temperature (supporting

confidence: 54%

Spatial Variability of External Egg Quality in Vertical Naturally Ventilated Caged Aviaries

Freitas

Tinôco

Gates

et al. 2023

Animals

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External egg quality is an essential parameter of egg production as it relates directly to economic losses. This study evaluated the spatial variability of external egg quality in five naturally ventilated caged vertical aviaries. Differences caused by bird age and thermal and luminous variability within aviaries during winter and summer were analyzed. Data on aviary air temperature, relative humidity, light intensity, and external egg quality were collected at evenly distributed points along the aviary length within three levels of cages. The experimental design was completely randomized in a factorial scheme. In the summer, the highest air temperature and lowest relative humidity were found in central cages, mainly in upper center cages; hens produced eggs with a lower weight and shape index in this area. Similar results were obtained in the winter. In the summer, eggs with lower shell weight and thickness were also produced by hens housed in the central cages, but in the winter, the opposite result was obtained. This study of the spatial variability of external egg quality proved efficient in detecting areas within an aviary with poor quality eggs; improvements to design and management in these areas could help management improve production efficiency and contribute to a sustainable egg supply.

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Section: Temperature (supporting

confidence: 54%

Spatial Variability of External Egg Quality in Vertical Naturally Ventilated Caged Aviaries

Freitas

Tinôco

Gates

et al. 2023

Animals

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“…The similar yolk color found, in all eggs might indicate that there was not much change in the carotenoid content of the experimental diets due to the supplementation of SRFPKC. Since the egg shape index is influenced not by the diets but by genotype (Shaker et al, 2017), age of hens, and ambient temperature (Nikolova and Kocevski, 2006), it is expected that the effect of supplementation of SRFPKC in the diet on egg shape index is statistically undetected in this present study. This finding is in accordance with the study of Liu et al (2020).…”

Section: Resultsmentioning

confidence: 72%

Feeding selenium-rich fermented palm kernel cake to laying hens produces selenium-rich eggs, increases egg production and quality

Sundu

Hafsah

Pamulu

et al. 2023

J. Indonesian Trop. Anim. Agric.

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A study was conducted to determine the effect of selenium (sodium selenite) added to palm kernel cake (PKC) before fermentation on production, selenium content, and quality of eggs. The PKC was added with 0.1% sodium selenite and 1% baking yeast (Fermipan®). The mixture was added with ster-ile distilled water to increase the water content of the substrate. The substrates were fermented at room temperature for 5 days. The fermented products of selenium-rich fermented palm kernel cake (SRFPKC) were dried and fed to the laying hens. The experimental diets used were T-0: without SRF-PKC, T-1: 0.25% SRFPKC, T-2: 0.50% SRFPKC, T-3: 0.75% SRFPKC and T-4: 1.0 % SRFPKC. The diets were given to 180 laying hens aged 22 weeks for 14 weeks. Data on egg production, feed intake and feed conversion ratio were recorded. Feed digestibilities of dry matter and protein were measured based on the method of total fecal collection. Egg qualities and egg weight loss were done using eggs stored for 1 and 30 days. Selenium and cholesterol contents of eggs were also measured. This study used a completely randomized design and was analyzed by analysis of variance. The results showed that the addition of SRFPKC increased egg production, hen day, egg weight, egg selenium, feed digest-ibility, improve FCR (P<0.05) and inhibit the process of decreasing the quality and weight of eggs stored for 30 days (P<0.05). In conclusion, the addition of SRFPKC increased egg production, feed digestibility, and egg selenium, improve FCR and slow down the deterioration of egg quality stored for 30 days.

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“…Hal ini menunjukkan bahwa kandang sistem pemeliharaan tidak mempengaruhi indeks telur ayam Ketarras. Shaker et al (2017) menyatakan bahwa indeks telur dipengaruhi oleh genetik. Indeks telur ayam Ketarras ini tidak berbeda dengan indeks telur ayam petelur.…”

Section: Indeks Telurunclassified

Performa Produksi Dan Kualitas Telur Ayam Ketarras Pada Sistem Pemeliharaan Kandang Baterai Dan Umbaran

Kususiyah

Desia

Edi

et al. 2023

JWP

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The aim of the study was to evaluate egg production performance and egg quality of Ketarras chickens in battery and umbaran rearing system. The study used 100 female Ketarras chickens aged 20 weeks; divided into 2 groups of maintenance systems, namely 50 in the battery cage and 50 in the umbaran rearing. The research was conducted at the Commercial Zone and Animal Laboratory (CZAL) Department of Animal Husbandry, Faculty of Agriculture, University of Bengkulu. Variables of production performance include: feed consumption, egg weight, percentage of egg production, egg mass production and feed conversion, while egg quality variables include: sample egg weight, egg index, yolk color, yolk weight, albumen weight, egg shell weight and shell thickness egg. Sampling for observation of egg quality was 100 eggs in each rearing system. Production performance data is discussed descriptively, while egg quality data is analyzed using the t test. The results of the evaluation of production performance showed that feed consumption and feed conversion in battery cages were lower with egg weight, egg production percentage and egg mass production being higher than in umbaran rearing system. The results of the t test showed that the rearing system had no significant effect (t count<t table) on all egg quality variables. It can be concluded that the egg production performance of Ketarras chickens in battery cages is better than in umbaran rearing system without any difference in egg quality. Keyword : Ketarras Chicken, Rearing System, Performance, Egg Quality

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Influence of Genotype and Hen Age on the Egg Shape Index

Cited by 9 publications

References 17 publications

Spatial Variability of External Egg Quality in Vertical Naturally Ventilated Caged Aviaries

Spatial Variability of External Egg Quality in Vertical Naturally Ventilated Caged Aviaries

Feeding selenium-rich fermented palm kernel cake to laying hens produces selenium-rich eggs, increases egg production and quality

Performa Produksi Dan Kualitas Telur Ayam Ketarras Pada Sistem Pemeliharaan Kandang Baterai Dan Umbaran

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