Effects of crude protein levels on egg quality traits of brown layers raised in two production systems

Viana, Eduardo de Faria; Stringhini, José Henrique; Carvalho, Fabyola Barros de; Viana, Débora Macedo Paronetto; Costa, Miliane Alves da

doi:10.1590/s1806-92902017001100003

Cited by 4 publications

(3 citation statements)

References 21 publications

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“…In addition, according to Viana et al (2017), the level of protein in the diet is important for the formation of the yolk and especially of the albumen. The haugh unit in the present study ranged from 93.67% to 95.51% and it was greater than reported by Yilmaz et al (2011) and Attia et al (2013) which were 87.41% and 91.21 % respectively.…”

Section: Discussionmentioning

confidence: 99%

Effect of asam kandis (Garcinia cowa Roxb) extract in drinking water on egg quality of Japanese quail (Coturnix coturnix japonica)

Darmawan¹,

Hermana²,

Dirgantara³

2021

Aceh J. Anim. Sci.

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Asam kandis (Garcinia cowa Roxb) fruit has been reported to contain phytochemicals such as xanthon, hydroxy cytric acid and flavonoids that have various activities such as antimicrobial and antioxidant. This study was aimed to investigate the effect of asam kandis extract addition in drinking water on the quality of quail eggs. Ninety nine laying quails of 59 days of age were divided into 3 treatments and 3 replications with 11 laying quails in each replication. Completely Randomized Design was used and the treatments were: T1= control (drinking water without asam kandis extract), T2= drinking water with asam kandis extract at pH 4, T3= drinking water with asam kandis extract at pH 3. The parameters observed were egg weight, egg shape index, yolk color, yolk percentage, albumen percentage, eggshell percentage, shell thickness, and haugh unit score. The data obtained were analyzed by Analysis of Variance (ANOVA) and significant differences among treatments means were tested by Duncans multiple test. The the addition of asam kandis extract did not affect (P0.05) on egg weight, egg shape index, yolk color, yolk percentage, albumen percentage, eggshell percentage, and haugh unit score. The addition of asam kandis extract in drinking water at pH 3 significantly (P0.05) increased eggshell thickness compare to that of other treatments. The conclusion was the addition of asam kandis extract in drinking water at pH 3 increased eggshell thickness without decreasing egg quality.

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Section: Discussionmentioning

confidence: 99%

Effect of asam kandis (Garcinia cowa Roxb) extract in drinking water on egg quality of Japanese quail (Coturnix coturnix japonica)

Darmawan¹,

Hermana²,

Dirgantara³

2021

Aceh J. Anim. Sci.

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“…Cassava leaves contained high crude protein, minerals (zinc, iron, magnesium, and calcium), vitamins such as riboflavin, niacin, thiamin, vitamin A (Ukanwoko & Ukandu, 2011;Zanu & Avukpor, 2013), and 298.00 μg/g to 816.92 μg/g beta carotene (Oresegun et al, 2016) that were needed for improving the egg production. According to Viana et al (2017), the protein in the diet is important for the yolk and albumen synthesis and formation. Nassiri et al (2012) also state that methionine is the first limiting amino acid for egg weight.…”

Section: Performances Of Laying Duckmentioning

confidence: 99%

Performances and Egg Quality of Laying Ducks Fed Diets Containing Cassava (Manihot esculenta Crantz) Leaf Meal and Golden Snail (Pomacea canaliculata)

Sumiati

Darmawan

Hermana

2020

Trop. Anim. Sci. J.

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The objective of this study was to evaluate the effect of feeding cassava leaf meal and golden snail on performances, chemical, and physical qualities of local duck egg. The experiment used 180 Pajajaran laying ducks of 20 weeks of age and was offered dietary treatments up to 26 weeks of age. The experiment was conducted in a completely randomized design with a 3 x 2 factorial arrangement. The first factor was the treatment of cassava leaf meal consisted of 3 levels, i.e., 0%, 5%, and 10%. The second factor was the treatment of golden snail consisted of 2 levels, i.e., 0% and 10%. Each experimental unit used three replicates and each replicate consisted of ten ducks. The results showed that there was no interaction effect of cassava leaf meal and golden snail treatments on laying duck performances and egg qualities. There were significant effects of cassava leaf meal and golden snail treatments (p<0.05) on egg production, feed intake, egg mass, egg index, and egg yolk color. However, egg weight, feed conversion ratio, yolk fat, yolk cholesterol, and yolk TBARS values, albumen weight, eggshell weight, shell thickness, and Haugh unit values were not affected (p>0.05) by treatments of cassava leave meal and golden snail. The utilization of 10% cassava leaf meal in the diet significantly improved egg production, feed intake, egg mass, and yolk color (p<0.05). The lowest egg index was found in the eggs produced by ducks fed diet containing 5% cassava leaf meal, but it is still within the normal range. Ducks fed a diet containing 5% golden snail significantly had higher feed intake, egg mass, percentage of albumen, and yolk color. It was concluded that there was no interaction effect of cassava leaf meal and golden snail treatments on laying duck performances and egg qualities. A diet containing 10% cassava leaf meal or a diet containing 5% golden snail had the greatest effects on the performance and physical quality of egg without affecting the chemical quality of the egg.

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“…On the other hand, it is known that the requirement of exogenous proteins is crucial for internal egg quality traits, especially for the formation of albumen and yolk (Viana et al, 2017). There is evidence that some aminoacids such as tryptophan (Trp), threonine, and lysine improve egg quality in laying hens (Rojas et al, 2015;Chang et al, 2018;Khattak and Helmbrecht, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effects of amylin on egg quality traits of hens during the early laying period

Guzel¹

2023

Revista Brasileira De Zootecnia

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Non-ruminantsFull-length research article Effects of amylin on egg quality traits of hens during the early laying period ABSTRACT -This study was conducted to investigate the effects of amylin, a pancreatic hormone polypeptide, on egg quality traits in laying hens. A total of 40 birds (14 wk of age) were randomly divided into two treatments with two replicates, 10 birds in each replicate. Twenty birds were subcutaneously injected with amylin at 75 µg/kg every other day (treatment 1), and the remaining animals (20 hens) were given only water as the control group (treatment 2). Eggs collected from the two groups (140 eggs per group) were examined for several quality performance traits such as egg weight, specific gravity, shape index, eggshell strength, eggshell thickness, eggshell ash, eggshell weight, Haugh unit (HU), albumen index, yolk index, yolk color, and albumen height. The results indicated that amylin had a positive effect on some egg quality traits in laying hens. Specific gravity, eggshell thickness, eggshell weight, HU, albumen index, yolk index, and albumen height, which are all considered as important quality parameters from the consumer point of view, especially HU, were relatively improved in the amylin treatment group. These results showed that the injection of 75 µg/kg amylin has a significant effect on some egg quality traits. Considering that egg quality characteristics are crucial for the egg industry, this study can be a reference for the detailed investigation of the use of amylin in the different stages of egg production.

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Effects of crude protein levels on egg quality traits of brown layers raised in two production systems

Cited by 4 publications

References 21 publications

Effect of asam kandis (Garcinia cowa Roxb) extract in drinking water on egg quality of Japanese quail (Coturnix coturnix japonica)

Effect of asam kandis (Garcinia cowa Roxb) extract in drinking water on egg quality of Japanese quail (Coturnix coturnix japonica)

Performances and Egg Quality of Laying Ducks Fed Diets Containing Cassava (Manihot esculenta Crantz) Leaf Meal and Golden Snail (Pomacea canaliculata)

Effects of amylin on egg quality traits of hens during the early laying period

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