QTLs associated with growth traits and abdominal fat weight and their interactions with gender and hatch in commercial meat-type chickens

2006 ◽  
Vol 37 (4) ◽  
pp. 352-358 ◽  
Author(s):  
G. Atzmon ◽  
Y. I. Ronin ◽  
A. Korol ◽  
N. Yonash ◽  
H. Cheng ◽  
...  
Keyword(s):  
Growth Traits ◽  
Abdominal Fat ◽  
Meat Type

scholarly journals Combining abilities of growth traits among pure and crossbred meat type chickens

2011 ◽  
Vol 60 (232) ◽  
pp. 953-963 ◽  
Author(s):  
A.O. Adebambo ◽  
C.O.N. Ikeobi ◽  
M.O. Ozoje ◽  
O.O. Oduguwa ◽  
A. Adebambo Olufunmilayo
Keyword(s):  
Growth Traits ◽  
Combining Abilities ◽  
Meat Type

scholarly journals Novel 61-BP Indel of the RIN2 Gene is Significantly Associated with Chicken Growth and Carcass Traits

2020 ◽  
Author(s):  
Wujian Lin ◽  
Tuanhui Ren ◽  
Jiaying Liang ◽  
Wangyu Li ◽  
Mingjian Xian ◽  
...  
Keyword(s):  
Growth Traits ◽  
Carcass Traits ◽  
Reference Value ◽  
Abdominal Fat ◽  
Expression Level ◽  
Gene Encoding ◽  
Mutation Site ◽  
Interacting Protein ◽  
Chicken Breeds ◽  
Intron Region

Abstract Background: Ras and Rab interactor 2 (RIN2) gene, encoding RAS and Rab interacting protein 2, can interact with GTP-bound Rab5 and participate in early endocytosis. Deletion of RIN2 may impair Rab5-related endosome signaling, leading to abnormal phenotypes. However, no research has been reported on the functions of RIN2 related to animal production.Results: A 61-bp insertion/deletion (indel) in the RIN2 intron region in this study. The genotype analysis of mutation sites was performed on 550 individuals from 7 different chicken breeds, and it was found that the indel exists in each breed and the local breed chickens are mainly DD genotypes. Correlation analysis of the indel with growth traits and carcass traits of the F2 population of Xinghua and White Recessive Rock chicken showed that the RIN2 61-bp deletion mutation site was significantly correlated with abdominal fat weight, fat width and hatching weight traits (P < 0.05). RIN2 mRNA was expressed in all test tissues, and the expression level of abdominal fat was higher than that in other tissues. In addition, it was further found that the expression level of type II RIN2 mRNA in abdominal fat was significantly different from that of ID type and DD type (P < 0.05). Conclusion: The results showed that the mutation was closely related to the abdominal fat-related and hatching weight traits of chickens, which may have certain reference value for molecular marker-assisted selection of chickens.

GENETIC CHANGES IN MEAT-TYPE CHICKENS IN THE LAST TWENTY YEARS

1981 ◽  
Vol 61 (3) ◽  
pp. 555-563 ◽  
Author(s):  
J. R. CHAMBERS ◽  
J. S. GAVORA ◽  
A. FORTIN
Keyword(s):  
Abdominal Fat ◽  
Carcass Weight ◽  
Feed Conversion ◽  
Genetic Changes ◽  
Body Weights ◽  
Genetically Improved ◽  
Experimental Strain ◽  
Selection For ◽  
Experimental Strains ◽  
Meat Type

Three experimental strains and two modern commercial stocks of meat-type chickens were compared in 1978. One experimental strain, K, an unselected control, represented broilers of 20 yr ago. A second experimental strain, A, selected for high broiler weight and a third, D, selected for high broiler and low adult weights had been derived from strain K and represented experimental strains genetically improved by artificial selection. All stocks were hatched and reared simultaneously using modern industrial practices. At 47 days, 70 birds of each sex and stock were slaughtered and the carcasses chemically analyzed. Also, 25 hens of each of strains A, D and K were slaughtered when 68 wk old and abdominal fat and carcass weight data were analyzed. The selection for higher broiler weight in strain A increased both broiler and adult body weights more and percent carcass fat less than the selection for high broiler and low adult weight in strain D. Relative to strain A, carcass weight of strain D was 10% lower in broilers and 16% lower in adult hens. Respective means for the modern commercial broilers, strain A broilers, and "broilers of 20 years ago" were 1552, 1001 and 676 g dressed carcass weight; 2.4, 1.6 and 1.4% abdominal fat; 17.2, 15.4 and 12.4% carcass fat (wet basis) and 1.90, 1.92 and 2.01 feed conversion. Thus, the modern broilers have a dramatically increased growth rate accompanied by higher fat content. The greater fat deposition may at least partly account for the lack of significant improvement in feed conversion.

scholarly journals Genotype and protein level interaction in growth traits of meat-type quail through reaction norm models

2017 ◽  
Vol 26 (4) ◽  
pp. 333-338 ◽  
Author(s):  
G. da Costa Caetano ◽  
F. Fonseca Silva ◽  
A. Calderano ◽  
L. Pinheiro Silva ◽  
J. Corrêa Ribeiro ◽  
...  
Keyword(s):  
Protein Level ◽  
Growth Traits ◽  
Reaction Norm ◽  
Meat Type

scholarly journals Variation in growth performance of pure and crossed meat type chickens

2020 ◽  
Vol 36 (2) ◽  
pp. 211-227
Author(s):  
A. O. Adebambo ◽  
C. O. N. Ikeobi ◽  
M. O. Ozoje ◽  
O. A. Adebambo
Keyword(s):  
Body Weight ◽  
Genetic Variation ◽  
Mixed Model ◽  
Wing Length ◽  
Growth Traits ◽  
Correlation Coefficients ◽  
Body Parameters ◽  
Appreciable Variation ◽  
Meat Type ◽  
Linear Body

Genetic variation from a combination of four breeds of chickens (Anak Titan, Alpha, Giriraja and Normal indigenous chickens) were examined for importance of sire, dam, season and sex on growth traits using a Mixed-model Least-Squares and Maximum LIkelihood computer program. The results show that sire and dam genotypes significantly (P<0.05) affected growth. Anak Titan cocks and hens performed best in body weight (BW) with values ranging from 38.45±0.74g and 40.21±0.66g at day old to 1135.93  35.67g and 953.38  35.38g at week 12 respectively. Normal indigenous and Alpha improved indigenous performed better in linear body parameters. Genetic correlation coefficients among parameters for all the breeds were generally high. Positive estimates ranged from 0.15 for breast girth (BG) and keel length (KL) at week four to 0.99 for BG-KL at week tweve while negative values ranged from -0.783 for body weight (BW) and wing length (WL) at week four to -0.99 for BW-BG at week twelve. Heritability estimates for body weight ranged from 0.14 at week one to 0.63 at week four. It can be concluded that appreciable variation exists for growth traits among the strains of chickens. Such variations can be utilized for improvement in the present emvironment.

scholarly journals Evaluation of polyunsaturated to saturated fatty acid ratio in the fat of different chicken types Ke

2020 ◽  
Vol 44 (5) ◽  
pp. 104-108
Author(s):  
A. O. Oyewale ◽  
E. B. Sonaiya
Keyword(s):  
Fatty Acid ◽  
Saturated Fatty Acid ◽  
High Performance ◽  
Volumetric Analysis ◽  
Abdominal Fat ◽  
Dual Purpose ◽  
Acid Ratio ◽  
Layer Chromatography ◽  
Saturated Fatty Acid Ratio ◽  
Meat Type

Samples were taken from the liver and the abdominal fat of the carcasses of male and female broilers (meat type), layers (egg type) and locals (dual purpose type). Lipids were extracted and subjected to volumetric analysis, iodine number determination, thin layer chromatography (TLC)with iodine staining and high performance liquid chromatography – mass spectrometry (HPLC-MS) to determine the polyunsaturated to saturated fatty acid (P/S) ratio. The result showed that female chickens, meat type chickens and abdominal fat samples had higher (P<0.05) lipid quantities than male chickens, layer and dual purpose chickens and liver samples, respectively. The P/S ratio of lipids extracted fromthe abdominal fat and fromthe liver did not differ (P<0.05) fromeach other.

scholarly journals Discovery of SNP in exon 14 of the <i>ADD1</i> gene and its association with fatness traits in four meat-type duck populations (Brief Report)

2010 ◽  
Vol 53 (5) ◽  
pp. 623-625
Author(s):  
J. Wang ◽  
X. Liu ◽  
Y. Wu ◽  
H. Fan ◽  
S. Hou
Keyword(s):  
Blood Pressure ◽  
Renal Failure ◽  
Gene Polymorphism ◽  
Candidate Gene ◽  
Growth Traits ◽  
Negative Effects ◽  
The Relationship ◽  
Meat Type

Abstract. Fatness traits are important economically traits in meat producing animals including duck (WU et al. 2008a, b). In human, the α-Adducin (ADD1) gene polymorphism was associated with blood pressure and other subsequent negative effects related to obesity, cardiovascular and renal failure. In fact, there was some relationship between obesity and hypertension. Thus the ADD1 gene is a candidate gene for fatness traits and the study aims to invest the relationship between the polymorphism of the ADD1 gene and fatness and growth traits.

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