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 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

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 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.

Reaction norm models for the study of genotype × methionine + cystine level interaction in meat-type quail

2019 ◽  
Vol 229 ◽  
pp. 56-63 ◽  
Author(s):  
G.C. Gouveia ◽  
F. Ferreira ◽  
L.R.A. Abreu ◽  
V.M.P. Ribeiro ◽  
B.M.M. Rocha ◽  
...  
Keyword(s):  
Reaction Norm ◽  
Meat Type

scholarly journals Genetic effects of season on the preweaning growth of beef cattle: A first approach to Retinta calves

2019 ◽  
Vol 33 (2) ◽  
pp. 134-143
Author(s):  
Rosa M Morales ◽  
Alberto Menéndez-Buxadera ◽  
Sebastián Demyda-Peyrás ◽  
Antonio Molina
Keyword(s):  
Heat Stress ◽  
Growth Traits ◽  
Climatic Factors ◽  
Methodological Approach ◽  
Warm Season ◽  
Cattle Breed ◽  
Live Weight ◽  
Reaction Norm ◽  
Random Regression ◽  
Economic Losses

Background: Heat stress derived from global warming is causing major economic losses in the livestock industry. Objective: To develop a novel methodological approach for determining the influence of climatic factors on the estimation of genetic parameters for growth traits in Retinta cattle breed by using reaction-norm models. Methods: Live weight records (n=7,753) from 3,162 Retinta calves born from 1,249 dams and 85 sires and raised in the Andalusian region (Spain) were analyzed. The effect of heat stress was measured using the temperature-humidity index, calculated with climatological data obtained from four weather stations. A bivariate-random-regression reaction-norm model was used to estimate the (co)variance components of weight until weaning in two different climatic seasons corresponding to warm and cold months. Results: The heritability pattern of individuals reared under diverse environments during the first 90 days of age was different. However, differences were not significant at the end of the growing period. Weaned calves reared during the cold season showed greater growth from 70 to 160 days in comparison with those reared during the warm season. Conclusions: Highly significant evidence of genotype-climatic condition interaction was found during the calf´s first three months of growth.

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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