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#116237 - 12/23/16 03:04 PM Re: Journal papers online - reference list [Re: KazJaps]
Redcap Online   content
Ruler of the Roost

Registered: 08/14/06
Posts: 955
Loc: Germany
Could this gene IdC play a role in Marsh Daisies and the Polish Green-legged Partridge Fowl?

In this context the following study about a health-affecting gene is also interesting.

Increased copy number of SOCS2 gene in Chinese gamecocks
H. Bi, G. Yi, and N. Yang
Poult Sci published 22 December 2016, 10.3382/ps/pew391

Quote:
Abstract

As a member of the suppressor of cytokine signaling (SOCS) family, the SOCS2 gene has been associated with negative regulation of the inflammatory immune response and a positive effect on growth when it is overexpressed. In our previous study, using next-generation sequencing, it was found that the Luxi Game (LX, a Chinese indigenous gamecock) had an increased copy number (CN) of the SOCS2 gene. To verify the copy number increase of the SOCS2 gene in gamecocks, we quantified the copy number value in 8 chicken breeds by quantitative PCR. The results showed that the average CN values of the SOCS2 gene were highly variable among the 8 breeds, and the highest was found in LX (CN = 5.0), almost 3.5 folds as many as the lowest in Rhode Island Red (CN = 1.43). All 4 gamecock breeds possessed significantly higher CN values than others, including broilers and commercial breeds. Thus, it is suggested that most Chinese gamecocks possess an increased copy number in the SOCS2 gene, indicating the plausible functions of the SOCS2 gene in inflammation control and increased body size.


http://ps.oxfordjournals.org/content/early/2016/12/22/ps.pew391.abstract?papetoc
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#116238 - 12/23/16 05:42 PM Re: Journal papers online - reference list [Re: Redcap]
Redcap Online   content
Ruler of the Roost

Registered: 08/14/06
Posts: 955
Loc: Germany
Originally Posted By: Redcap
Could this gene IdC play a role in Marsh Daisies and the Polish Green-legged Partridge Fowl?


It can, but in this study they mention it not clear.

Siwek, M., Wragg, D., Slawinska, A., Malek, M., Hanotte, O., & Mwacharo, J. (2013). Insights into the genetic history of Green-legged Partridgelike fowl: mtDNA and genome-wide SNP analysis. Animal Genetics, 44(5), 522–532. http://doi.org/10.1111/age.12046
https://www.ncbi.nlm.nih.gov/pmc/article...m=auto,-107,666

They only say :

Quote:
The green shank colour has previously been shown to result from the interaction of the w/w and id+/id+ alleles in the Cornell random-bred White Leghorn population (McGibbon 1974, 1979).
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#116247 - 01/03/17 03:33 PM Re: Journal papers online - reference list [Re: Redcap]
KazJaps Offline
Classroom Professor

Registered: 08/30/02
Posts: 2807
Loc: Australia
A new study on proteins that influence light/dark brown eggshell colour:

Li G, Sun C, Wu G, Shi F, Liu A, et al. (2016)
iTRAQ-Based Quantitative Proteomics Identifies Potential Regulatory Proteins Involved in Chicken Eggshell Brownness.
PLOS ONE 11(12): e0168750. doi: 10.1371/journal.pone.0168750
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0168750

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#116250 - 01/05/17 04:55 PM Re: Journal papers online - reference list [Re: KazJaps]
Redcap Online   content
Ruler of the Roost

Registered: 08/14/06
Posts: 955
Loc: Germany
Originally Posted By: KazJaps
Thanks Wieslaw. That's interesting.

Although I've posted the full paper link previously (which usually means that I've downloaded the full paper), I haven't been able to find a full copy saved:

Green shanks and adult mortality in chicken.
(W. H. MCGIBBON)(J Hered-1979-MCGIBBON-44-6)
http://jhered.oxfordjournals.org/content/70/1/44.full.pdf
* this one not available for free now.

Full text is online.
http://documents.kippenjungle.nl/#post36
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#116270 - 01/08/17 03:26 PM Re: Journal papers online - reference list [Re: Redcap]
Redcap Online   content
Ruler of the Roost

Registered: 08/14/06
Posts: 955
Loc: Germany
Btw. the most frequent tumour type Hemangioma (in idC Chicken) is mostly associated with Avian Leucosis Virus (ALV). So it seems that there is a susceptibility to ALV for Chicken with the idC trait.

I wonder why McGibbon didn't come to the conclusion, that there is a relation to ALV. Especially he didn't mentioned which line he has studied. Maybe the Cornell line S?

Quote:
In comparison to the frequency of ev6 found in the Cornell line K, the incidence of ev6 in the Cornell line S, selected in the opposite direction for susceptibility to the ‘avian leukosis complex’, which shares about 30% of its original genetic basis with the Cornell line K (R.K. Cole, 1991, personal communication), was as low as 0.28 (Kuhnlein et al. 1989b). There cannot be much doubt that the role of ev6 in disease resistance may also depend on the genetic background, when these varying results are considered.

The availability of information on the incidence of ev genes in three Leghorn strains of different origin, each with two sublines differing in their genotype for resistance to ALV infection, has increased the understanding of observed strain differences on the effects of ALV infection. However, it has also added to the complexity of the underlying problem in studies concerned with the effects of major genes in disease resistance.

http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0388.1995.tb00581.x/full
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#116333 - 01/16/17 05:55 AM Re: Journal papers online - reference list [Re: Redcap]
KazJaps Offline
Classroom Professor

Registered: 08/30/02
Posts: 2807
Loc: Australia
Note - I'm finding a lot of full papers from Journal of Heredity and Poultry Science available online for free at the moment. This probably won't last long, so grab them quickly.

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#116338 - 01/16/17 08:05 AM Re: Journal papers online - reference list [Re: KazJaps]
KazJaps Offline
Classroom Professor

Registered: 08/30/02
Posts: 2807
Loc: Australia
I haven't seen the following reference before:

Smyth, J. R., Jr., M. L. Boyle, HI, and N. Lakshmanan, 1990. Genetics of self black and birchen patterns and their effects on feather, eye and shank pigmentation in the chicken.
Poultry Sci. 69(Suppl. l):128.(Abstr.)

Only an abstract. Unfortunately I couldn't find it listed for viewing /download at the Poultry Science website. All I could find was Smyth's name listed for 1990 paper authors: Smyth, J. R., Jr., 77*. 128*

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#116345 - 01/16/17 03:58 PM Re: Journal papers online - reference list [Re: KazJaps]
Redcap Online   content
Ruler of the Roost

Registered: 08/14/06
Posts: 955
Loc: Germany
Originally Posted By: KazJaps

Smyth, J. R., Jr., M. L. Boyle, HI, and N. Lakshmanan, 1990. Genetics of self black and birchen patterns and their effects on feather, eye and shank pigmentation in the chicken.
Poultry Sci. 69(Suppl. l):128.(Abstr.)


Quote:
Further evidence was obtained to support the existence of separate alleles at the E-locus for self-black (E) and birchen (ER) feather color patterns. E and ER alleles were isolated from a heterogeneous population by consecutive backcrosses to wild type (e+/e+) tester stocks thus separating out the effects of segregating eumelanizing modifiers.
Dominance of E over is complete in females and nearly complete in males. E/e+ chick down is black, while adult eye and shank color is black in females and intermediate in males with no obvious dosage effects. The expression of ER is more variable with ER/ER females having black down, while male down varies from brown-faced black to dark reddish. ER/e+ chicks have varying degrees of reddish-brown down. Adult ER/ER females vary from near black to dark birchen, while males are dark birchen. Adult heterozygotes are variably birchen. Eye and shank color is reduced by ER on a dosage basis, with some ER/ER males having clear shanks. It was also shown that eumelanizing modifiers can convert ER/- birds to self black plumage without altering eye or shank melanization.

http://documents.kippenjungle.nl/#post40
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#116349 - 01/16/17 06:10 PM Re: Journal papers online - reference list [Re: Redcap]
KazJaps Offline
Classroom Professor

Registered: 08/30/02
Posts: 2807
Loc: Australia
Thank you Redcap smile

Maybe Smyth learn't more in future years about the brown-down ones to explain the following 1994 quote, ie maybe eventually segregated out 2 different birchen alleles:

Quote:
E (self-black)>
ER (black-downed birchen) >
E^RB (red-brown downed birchen)


Melanin Pigmentation: Its Biological Roles, Inheritance
and Expression in the Chicken

Dr. J. Robert Smyth,Jr.
1994
http://www.poultryscience.org/docs/pba/1952-2003/1994/1994%20Smyth.pdf

And it is great to see that they tried to segregate out E from additional eumelanisers, giving further evidence that there is a more melanised E locus allele - Extended Black (not possibly ER + eumelanisers).

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#116405 - 01/29/17 11:46 PM Re: Journal papers online - reference list [Re: KazJaps]
KazJaps Offline
Classroom Professor

Registered: 08/30/02
Posts: 2807
Loc: Australia
Don't think I've posted this one before....

Freese, N. H., Lam, B. A., Staton, M., Scott, A., & Chapman, S. C. (2014).
A Novel Gain-Of-Function Mutation of the Proneural IRX1 and IRX2 Genes Disrupts Axis Elongation in the Araucana Rumpless Chicken.
PLoS ONE, 9(11), e112364. http://doi.org/10.1371/journal.pone.0112364
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4221472/

---------------
Jeong, H., Kim, K., Caetano-Anollés, K., Kim, H., Kim, B., Yi, J.-K., … Oh, D. Y. (2016).
Whole genome sequencing of Gyeongbuk Araucana, a newly developed blue-egg laying chicken breed, reveals its origin and genetic characteristics.
Scientific Reports, 2016. 6, 26484. http://doi.org/10.1038/srep26484
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4877703/


Edited by KazJaps (01/29/17 11:52 PM)
Edit Reason: added Gyeongbuk Araucana paper

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