QTL mapping of egg albumen quality in egg layers

Honkatukia, Mervi; Tuiskula-Haavisto, Maria; Arango, Jesus; Tabell, Jonna; Schmutz, M.; Preisinger, Rudolf; Vilkki, Johanna

doi:10.1186/1297-9686-45-31

Cited by 19 publications

(19 citation statements)

References 26 publications

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“…Amino acids are used to raise the viscosity of albumen and haugh unit will increase. Furthermore, Honkatukia et al (2013) explained that ovomucin was able to control the quality of the protein albumen and assist the process of egg albumen viscosity. The con tent of ovomucin in the egg albumen affects the value of haugh unit, the higher the egg albumen the higher the haugh unit values (Nugraha et al, 2013).…”

Section: Physical Quality Of Eggmentioning

confidence: 99%

Performance and Egg Quality of Laying Hens Fed Ration Containing Coriander Seeds (Coriandrum sativum Linn)

Habiyah

Mutia

Suharti

2015

Med Pet

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The aims of this study were to determine the effect of diets containing different levels of coriander seeds on performance and egg quality of Lohmann Brown laying hens. A total of 96 Lohmann Brown laying hens of 43 weeks of age were randomly allocated into 16 experimental units by assigning a completely randomized design with 4 treatments and 4 replications that kept for 6 weeks. The treatment diets were R0: diet with 0% supplementation of coriander seeds powder (control), R1: diet with supplementation of 1% coriander seeds powder, R2: diet with supplementation of 2% coriander seeds powder, and R3: diet with supplementation of 3% coriander seeds powder. The results showed that supplementation of coriander seeds in diets did not affect egg weight, egg production, and egg mass. Supplementation of coriander seeds 2%-3% significantly (P<0.05) decreased feed consumption and feed conversion ratio. Supplementation of coriander seeds 1%-3% significantly (P<0.05) increased yellowness in yolk color without affecting other quality parameters. It can be concluded that supplementation of coriander seeds at the levels of 2%-3% decreased feed intake, feed conversion ratio, and increased yolk color, however, the supplementation at all levels in diets did not affect egg weight, egg production, and egg mass. Key words: coriander seeds, egg quality, laying hens, performance ABSTRAK Penelitian ini bertujuan untuk mengkaji penampilan produksi dan kualitas telur ayam petelurLohmann Brown yang disuplementasi biji ketumbar yang mengandung minyak atsiri dengan level berbeda dalam ransum. Sebanyak 96 ekor ayam petelur Lohmann Brown berumur 43 minggu digunakan dalam penelitian ini. Penelitian ini menggunakan rancangan acak lengkap dengan empat perlakuan dan empat ulangan. Pakan percobaan ditambahkan tepung ketumbar 0% (kontrol), 1%, 2%, dan 3% selama 6 minggu. Hasil penelitian menunjukkan bahwa suplementasi biji ketumbar dalam ransum tidak berpengaruh pada bobot telur, produksi telur, dan massa telur. Sementara suplementasi biji ketumbar 2%-3% nyata (P<0,05) menurunkan konsumsi pakan dan rasio konversi pakan. Suplementasi biji ketumbar 1%-3% nyata (P<0,05) meningkatkan warna kuning telur tanpa mempengaruhi parameter kualitas lainnya. Dapat disimpulkan bahwa suplementasi biji ketumbar 2%-3% dalam pakan dapat menurunkan konsumsi pakan, rasio konversi pakan dan meningkatkan warna kuning telur, namun demikian suplementasi tidak berpengaruh pada bobot, produksi, dan massa telur.

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Section: Physical Quality Of Eggmentioning

confidence: 99%

Performance and Egg Quality of Laying Hens Fed Ration Containing Coriander Seeds (Coriandrum sativum Linn)

Habiyah

Mutia

Suharti

2015

Med Pet

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“…Around the position of QTL1 on chromosome 1 (see Table 7), a QTL affecting Haugh unit, which is calculated based on egg weight and albumen height, has been reported by TuiskulaHaavisto et al (2004). Around the region of QTL4 on chromosome 2 and QTL18 on the Z chromosome, QTLs affecting albumen height and Haugh unit were identified by previous reports (Hansen et al, 2005;Abasht et al, 2009;Honkatukia et al, 2013). Also, Wardecka et al (2003) and Schreiweis et al (2006) found QTLs for albumen weight in the similar region to QTL8 on chromosome 4.…”

Section: Discussionmentioning

confidence: 84%

“…According to the UCSC Genome Browser (http://genome.ucsc.edu/), a large number of genes are located at the 1.5-LOD drop support intervals of the QTL on chromosome 8. Therefore, further fine mapping using several approaches such as QTL mapping with more individuals and markers, genome sequencing, and/or bioinformatic analysis (Honkatukia et al, 2013;Ahsan et al, 2013) should be conducted on chromosome 8 to specify candidate genes for our QTL(s).…”

Section: Discussionmentioning

confidence: 99%

Mapping of Main-Effect and Epistatic Quantitative Trait Loci for Internal Egg Traits in an F<sub>2</sub> Resource Population of Chickens

et al. 2014

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Quantitative trait loci (QTLs) analyses for internal egg quality of chickens were performed with 143 microsatellite markers on 27 linkage groups in 371 F 2 hens obtained from an intercross between Japanese Large Game (Oh-Shamo) and White Leghorn breeds. Internal egg traits, such as weight and size of the albumen, weight and size of the yolk, and yolk colors, were measured in three different egg laying stages (early, middle, and late stages). We detected 11 significant and four suggestive QTLs with main effects on 27 internal egg traits in the three stages. Albumen weight and size QTLs were identified on chromosomes 1, 2, 4, 5, 6, 8, 9, 27, and Z. Yolk weight and size QTLs were discovered on chromosomes 4, 7, 8, 15, and Z, whereas yolk color QTLs were detected on chromosomes 1, 3, 4, 8, 9, and 27. Moreover, we revealed four significant and two suggestive QTLs with epistatic interaction effects on three internal egg traits in the late stage. This is the first report of epistatic QTLs for internal egg traits in chickens. The four significant loci were on chromosomes 1, 2, 8, and 17 and affected yolk size and yolk color, whereas the two suggestive loci were located on chromosomes 2 and 10 and affected albumen height. Among these epistatic QTLs, the two QTLs detected on chromosomes 1 and 8 were found at the regions of main-effect QTLs. The present main and epistatic QTLs accounted for 3.61-18.46% of the phenotypic variances. The chromosomes 1 and 8 QTLs with main effects on internal egg traits exerted their effects throughout all three stages, whereas the other QTLs with main-or epistatic-effects were detected in one or two stages. These results demonstrated that age-related changes of QTLs will make the genetic features of quantitative traits more complex.

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“…Preparation of DNA was described previously for the F 2 ,WPR (Honkatukia et al . ) and RIR lines (Dunn et al . ).…”

Section: Additive Effects With Nominal P‐values and Variances Explainmentioning

confidence: 99%

Validated quantitative trait loci for eggshell quality in experimental and commercial laying hens

et al. 2018

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Compromised eggshell quality causes considerable economic losses for the egg industry. Breeding for improved eggshell quality has been very challenging. Eggshell quality is a trait that would greatly benefit from marker-assisted selection, which would allow the selection of sires for their direct contribution to the trait and would also allow implementation of measurements integrating a number of shell parameters that are difficult to measure. In this study, we selected the most promising autosomal quantitative trait loci (QTL) affecting eggshell quality on chromosomes 2, 3, 6 and 14 from earlier experiments and we extended the F population to include 1599 F females. The study was repeated on two commercial populations: Lohmann Tierzucht Rhode Island Red line (n = 692 females) and a Hy-Line White Plymouth Rock line (n = 290 progeny tested males). We analyzed the selected autosomal QTL regions on the three populations with SNP markers at 4-13 SNPs/Mb density. QTL for eggshell quality were replicated on all studied regions in the F population. New QTL were detected for eggshell color on chromosomes 3 and 6. Marker associations with eggshell quality traits were validated in the tested commercial lines on chromosomes 2, 3 and 6, thus paving the way for marker-assisted selection for improved eggshell quality.

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QTL mapping of egg albumen quality in egg layers

Cited by 19 publications

References 26 publications

Performance and Egg Quality of Laying Hens Fed Ration Containing Coriander Seeds (Coriandrum sativum Linn)

Performance and Egg Quality of Laying Hens Fed Ration Containing Coriander Seeds (Coriandrum sativum Linn)

Mapping of Main-Effect and Epistatic Quantitative Trait Loci for Internal Egg Traits in an F<sub>2</sub> Resource Population of Chickens

Validated quantitative trait loci for eggshell quality in experimental and commercial laying hens

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