scholarly journals Growth rate, phenotypic correlation and repeatability estimates of body weight and linear body traits of Cobb and Arbor Acre broiler strains

2020 ◽  
Vol 44 (1) ◽  
pp. 39-47
Author(s):  
O. M. Obike ◽  
R. J. Nosike ◽  
D. N. Onunkwo ◽  
O. C. Obi ◽  
E. N. Obasi ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Wing Length ◽  
Correlation Coefficients ◽  
Phenotypic Selection ◽  
Phenotypic Correlation ◽  
Potential Response ◽  
Stages Of Growth ◽  
High Repeatability ◽  
Linear Body

Correlation coefficients are useful tool in animal breeding as a means of predicting potential response. In this study, body weight (BW) and linear body traits records of Arbor Acre and Cobb broiler strains obtained at 3 – 8 weeks were used to compare the growth performance of the strains as well as estimate the phenotypic correlations (rp ) among BW and the linear body traits. Repeatability (R) values of BW and the linear body traits were estimated at weeks 3, 5 and 7. Atotal of 200 day old chicks, 100 each of Arbor Acre and Cobb were used for the study. The linear body traits considered were body length (BL), shank length (SL), chest circumference (CC), keel length (KL), wing length (WL) and drum stick length (DSL). Significant differences (P<0.05) were observed between the strains for BW and the linear body traits at the various weeks. BW differed significantly at weeks 5, 6 and 7, which ranged from 1036.67 ± 36.93 – 1736.67 ± 46.41 for Arbor Acre and 930.00 ± 20.59 – 1563.33 ± 33.26 for Cobb. Arbor Acre showed significant (P<0.05) superiority to Cobb in their linear body traits in most of the weeks. BW had high significant (P<0.05; P<0.01) positive rp with the linear body traits, which ranged from 0.535 (KL) – 0.842 (BL) for Arbor Acre and 0.523 (SL) – 0.834 (BL) for Cobb. The rp among the linear body traits in both Arbor Acre and Cobb were positive but ranged from moderate to high. The R estimate of BW of Arbor Acre and Cobb were all very highly repeatable at weeks 3, 5 and 7 ranging from 0.90 – 0.99. R values for the linear body traits ranged majorly from moderate {(0.31 – 0.67 and 0.37 – 0.69)}to high {(0.78 – 0.97) and 0.97) and (0.71 – 0.92)} for Arbor Acre and Cobb, respectively across the weeks evaluated. The result of this study indicates that Arbor Acre could be a strain of choice for rearing in our study area owing to its superiority over Cobb in terms of growth performance. All the linear body traits measure were good estimators of BW in both strains as well as each other, implying that any phenotypic selection on one trait will lead to improvement of others. The high repeatability estimates of body weight and some of the linear traits indicate that fewer records would be required to adequately characterize the inherent growing ability of the birds at the various stages of growth.

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 Phenotypic Correlation of Body Weight and Linear Body Measurements in Muscovy (Cairinia Moschata) and Mallard (Anas Platyrhynchos) Ducks

2020 ◽  
pp. 13-17
Author(s):  
Ologbose F. I. ◽  
Mbara S. W.
Keyword(s):  
Body Weight ◽  
Correlation Coefficient ◽  
Linear Correlation ◽  
Selection Index ◽  
Body Height ◽  
Correlation Coefficients ◽  
The Body ◽  
Phenotypic Correlation ◽  
Body Measurements ◽  
Linear Body

Data on body weight and linear body measurements (LBMs) namely body height (BH), body length (BL), breast circumference (BC), thigh length (TL), bill length (BiL), wing length (WL) and shank length (SL) were taken from 120 ducks (i. e. 60 Muscovy and 60 Mallard ducks) at 4 and 8 weeks of age were analysed to obtain the phenotypic correlation between LBMs and body weight. The value of the pearson’s linear correlation coefficient to determine the level of relationship between the body weight and linear body measurement. This ranged from 0.488 (SL) – 0.996 (BH) and (0.729 (SL) – 0.996 (Bil) in Muscovy and Mallard duck at week 4 respectively. While, at week 8, the value of the pearson’s linear correlation coefficient ranges from 0.126 (Bil) – 0.960 (BL) and 0.735(BC) – 0.978 (BH) respectively. This positive and mostly significantly phenotypic relationship between the body weight and linear body measurements indicates that an improvement in one trait could leads to an improvement in the other. Correlation coefficients indicate the strength of a linear relation between traits and thus provide useful information about the traits involved for the purpose of breeding and improvement plan. This shows that favourable relationships exist among traits that have higher correlation coefficients, it further explains that such traits could be collectively included in the selection index to achieve positive phenotypic progress.

Growth performance, correlation and regression estimates of seven-chicken strains in South-Western Nigeria

2020 ◽  
Vol 45 (2) ◽  
pp. 40-48
Author(s):  
A. J. Atansuyi ◽  
U. C. Ihendu ◽  
C. A. Chineke
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Correlation Coefficients ◽  
Tail Length ◽  
Experimental Period ◽  
The Body ◽  
Coefficient Of Determination ◽  
Indigenous Chicken ◽  
Randomized Design ◽  
Study Results

This study was conducted to determine the growth performance, correlation and regression estimates of seven-chicken strains in South-western Nigeria using a total of 300 day-old chicks. The birds were divided into seven groups based on their strain. The seven strains are Normal feather (NF), Fulani ecotype (FE), Frizzle feather (FF), naked neck (NN) and Transylvania indigenous strains while Hubbard and Marshal were meat-type exotic chickens. There were forty- five (45) unsexed day-old chicks in each strain except the Frizzle feather that were 30 in number. Completely randomized design (CRD) was used for the trial that lasted for 8 weeks. The birds were fed experimental diets ad libitum throughout the period of the study. Results showed that there were significant differences (p<0.05) in the initial and final weights of the birds. It was observed that exotic strains weighed heavier (3569.73gHB) than their indigenous counterparts (1391.11gNF). However, the Fulani ecotype weighed heaviest (1840.99g) among Nigeria indigenous strains during the experimental period. This showed that FE strains are generally heavy breed chicken and could be incorporated into a meat producing indigenous chicken if improved upon. The result of the correlation coefficients showed that a very strong, positive and highly significant (P<0.001) relationship existed between body weights and linear body measurements as most of the values are (>0.40). All the body parameter examined had significant (p<0.01) and direct relationship with the body weight. Shoulder-to-tail length (STL) had the highest coefficient of 0.98.The high correlation estimates obtained in this study could be as a result of pleiotropy, heterozygosity or linkage of genes in the birds. The three functions were highly significant (p<0.05) for all the parameters studied. This shows that the functions well described the parameters. On the basis of coefficient of determination (R ), the body weight of poultry birds at any age can be predicted most accurately with BRG using cubic function.

scholarly journals Comparative analyses of growth response and genetic parameter estimates of some quantitative traits in three broiler strains in South-West, Nigeria

2021 ◽  
Vol 41 (2) ◽  
pp. 12-18
Author(s):  
A. J. Sanda ◽  
O. Olowofeso ◽  
M. A. Adeleke ◽  
A. O. Oso ◽  
S. O. Durosaro ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Broiler Chicken ◽  
Quantitative Traits ◽  
Growth Response ◽  
Genetic Parameter ◽  
Parameter Estimates ◽  
Comparative Analyses ◽  
South West ◽  
Linear Body

A total of 150 pure strain broiler chicks comprising 50 each of Arbor Acre, Marshall and Ross were used for this experiment which lasted 10 weeks at the Poultry Breeding Unit of the Directorate of University Farms (DUFARMS) of the Federal University of Agriculture, Abeokuta (FUNAAB), Ogun State Nigeria. The experiment was carried out to make comparative analyses of growth response and genetic parameter estimates of some quantitative traits (Body weight and linear body measurement) in Arbor Acre, Marshall and Ross broiler chicken strains in South-West, Nigeria. Growth performance data was collected from week 3 to week 10 and analysed using the Generalized Linear Model. Marshall broiler chicken strain had the highest growth rate and better growth performance followed by Ross and Arbor Acre in terms of body weight and linear body dimensions. Marshall and Ross attained mean weight of 1964.50±43.10 g and 1913.02±41.05 g, respectively, which were superior (p < 0.05) to Arbor Acre 1831.63±36.28 g at 10 weeks of age. Marshall Broiler chicken strain also had the highest estimates of heritability for body weight 0.46±0.04, followed by Arbor Acre and Ross with estimates of heritability of 0.38±0.12 and 0.26±0.06, respectively. However considering the linear body measurements, none of the broiler chicken strains maintained high estimates of heritability from 3rd to 10th week.

scholarly journals Evaluation of early growth performance of backcross progenies from crossbred gilts mated with their native parents

2021 ◽  
Vol 33 (2) ◽  
pp. 170-177
Author(s):  
P. E. Nwaku ◽  
M. O. Otuma
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Body Length ◽  
Feed Efficiency ◽  
The Body ◽  
Body Measurements ◽  
State University ◽  
Weaning Age ◽  
The Mean ◽  
Linear Body

The pre weaning growth performance of piglets from four different cross bred dams mated back to their native parents was studied in the Breeding and Research Farm of Ebonyi State University, Abakaliki. Parameters like body weight, weight gain, feed intake and feed efficiency as well as linear body measurements of body length, heart girth and height  at withers were taken and observed for growth between birth and weaning age of eight weeks. Results Results indicated significant differences (P<0.05) between the main backcross N x (N x LR) and the three other genotypes of N x (N x LW), N x (LR x N) and N x (LW x N) in all parameters. The mean birth weight of the progenies ranged from 1.00±0.60 to 1.60±5kg while the weaning weights were 10.5±0.4 to 16.0±1.0kg respectively. Results further revealed that body weight at weaning correlated responsively with all parameters and these include body length (r=0.858), heart girth (r= 0.446) and height at the withers (r= 0.946). Similarly, body length has a positive correlation with heart girth (r= 0.477) and height at the withers (r= 0.827) whereas hear girth correlated positively with the height at the withers (r= 0.494). Similar trend were obtained in the regression of each of the body measurements on the other in which bodyweight changes depended more on that of body length (0.86) than on heart girth (0.45). Judging from the observed variations existing among the piglets resulting from differnt crossbreed dams in their pre-weaning growth performance, maternal rather than paternal influences appeared to be more important in the traits studied.   

PHENOTYPIC, GENETIC AND ENVIRONMENTAL CORRELATIONS BETWEEN BODY WEIGHT AND LINEAR BODY TRAITS OF CHICKEN GENOTYPES

2021 ◽  
Vol 4 ◽  
pp. 32-43
Author(s):  
Ugwumba C. Isaac
Keyword(s):  
Body Weight ◽  
Moment Method ◽  
Genetic Improvement ◽  
Wing Length ◽  
Indirect Selection ◽  
Body Width ◽  
Environmental Correlations ◽  
Naked Neck ◽  
Selection Of ◽  
Linear Body

Data from 123, 49, 116, 137, 42 and 64 chickens belonging to Isa Brown x frizzle feathered (IBxF), Isa Brown x naked neck (IBxNa), Isa Brown x normal feathered (IBxN), frizzle feathered x Isa Brown (FxIB), naked neck x Isa Brown (NaxIB) and normal feathered x Isa Brown (NxIB) genotypes, respectively were used to establish phenotypic (rP), genetic (rG) and environmental (rE) correlations between body weight and linear body traits at 2, 10 and 20 weeks of age. Phenotypic correlations were analyzed by Pearson’s Product Moment method. Genetic and environmental correlations were estimated by covariance analysis. The highest rP estimates were obtained between body weight and shank length (SL) in IBxF (0.84) and NxIB (0.87) at 10 weeks, body width (BW) in IBxNa (0.84) and IBxN (0.72), drumstick length (DL) in FxIB (0.71) and NaxIB (0.88) at 20 weeks. Body weight had highest rG estimates with SL in NxIB (0.99), BW in IBxF (2.40), wing length (WL) in BxNa (0.91) and FxIB (7.39) at 10 weeks, body girth (BG) in IBxN (0.97) and BW of NaxIB (4.73) at 20 weeks. However, SL of IBxNa (-5.15), BG of NaxIB (-0.53), keel length (KL) of NxIB (0.35), WL of IBxF (-0.38) and FxIB (-1.41) at 2 weeks and WL of IBxN (-0.43) at 20 weeks had the least rE with body weight. Indirect selection of body weight using the highest phenotypic, genetic and lowest environmental correlated linear traits will result in rapid genetic improvement in these chickens.

scholarly journals Multifunctional discriminant analysis of morphostructural traits in Nigerian locally adapted turkeys

2020 ◽  
Vol 53 (2) ◽  
pp. 57-62
Author(s):  
Adeyemi Sunday Adenaike ◽  
Oluwatosin Jegede ◽  
Abdulraheem Adedeji Bello-Ibiyemi ◽  
Christian Obiora Ndubuisi Ikeobi
Keyword(s):  
Body Weight ◽  
Discriminant Analysis ◽  
Body Length ◽  
Wing Length ◽  
White Male ◽  
Correlation Coefficients ◽  
Morphometric Traits ◽  
Male And Female ◽  
Linear Discriminant ◽  
Wing Span

AbstractAssociation among biometric traits and characterisation based on sexed-plumage colour of Nigerian locally adapted turkey were investigated using discriminant analysis. Eight morphometric traits were measured to study their phenotypic variations between two plumage colours (Lavender and White). The characters measured were body weight (BW) as well as body dimensions such as wing length (WL), wing span (WS), body length (BL), breast girth (BG), shank length (SL), thigh length (TL) and keel length (KL) taken at 12 weeks of age. The White male turkey was significantly (P < 0.05) heavier and had longer morphometric body traits than its female counterpart, but when compared with the Lavender male and female genotype, the traits did not differ significantly (P > 0.05). High positive and significant (P < 0.05) correlation coefficients were recorded among the various body traits. Coefficients of correlation in Lavender turkey ranged from 0.73 – 0.94, and 0.84 – 0.96 in the White turkey. The highest association with body weight in Lavender was body length (r = 0.80, P < 0.05), and the trio of BW, TL and KL had the stronger association for the White turkey (r = 0.91, P < 0.05). The first, second and third canonical variable or Fisher linear discriminant function explained 52.13 %, 37.48 % and 10.39 %, respectively, of the total variation. The distances between all pair wise were significant (P < 0.05). The greatest distance value (415.16) was between the White male and female turkeys, closely followed by the male White and female Lavender turkey (303.58), while the least distance was between the male and female Lavender. The distance between the populations was significant. It can be concluded that thigh length, breast girth, wing length, wing span and body length can serve as the most discriminating variables in distinguishing between White and Lavender populations.

scholarly journals Phenotypic correlations between body weight and morphometric traits in broiler chicken strains

2020 ◽  
Vol 45 (3) ◽  
Author(s):  
R.J. Nosike ◽  
E.N. Obasi ◽  
R.N. Nwose ◽  
R.O. Igwe ◽  
D.N. Onunkwo ◽  
...  
Keyword(s):  
Body Weight ◽  
Broiler Chicken ◽  
Wing Length ◽  
Measurement Data ◽  
The Body ◽  
Broiler Chicks ◽  
Morphometric Traits ◽  
Morphometric Measurements ◽  
Predict Body Weight ◽  
Linear Body

A total of 270 one day-old broiler chicks comprising of 90 chicks each ofAborAcre, Ross and Marshal Strains were used for the study. The study was carried out to determine the correlation between the body weight and other morphometric measurements in the broiler strains from 2 to 8 weeks of age and predict body weight of the broiler using linear body measurement. Data were collected on body weight and body measurements to include breast length (BRL), thigh width (TW), shank length (SL), keel length (KL), wing length and drumstick length (DL). There were strong positive and significant (p>0.01) correlations between body weight (BWT) and all morphometric traits in the three broiler strains studied, except breast length (BRL) that showed weak but significant (p

scholarly journals Comparative Growth Performance of Kuroiler and Nigerian Indigenous Naked Neck Chickens Kept in a Tropical Environment

2021 ◽  
Author(s):  
ODAH EMMANUEL OKOLI ◽  
Wheto Mathew ◽  
Ojaowo Henry Temitope ◽  
Obanla Fisayo Gideon ◽  
Adebambo Oluwafunmilayo Ayoka ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Growth Patterns ◽  
Growth Stages ◽  
Differential Growth ◽  
Naked Neck ◽  
Chicken Breeds ◽  
And Performance ◽  
The Tropics ◽  
Linear Body

Abstract Chicken production is an essential venture for steady household income generation, poverty alleviation and provision of quality nutritional aids. This study was conducted to compare growth performance of Kuroiler and Nigerian indigenous naked neck chickens reared in the tropics. A total of 538 birds comprising 345 indigenous Nigerian naked neck and 193 Kuroiler chickens genotypes were sampled. Body weight and linear body measurements were observed at 2, 4, 6, 8 and 10th week. Data obtained were subjected to 2-way analysis of variance using GLM procedure of SAS. There exist significant variations in chicken genotype with growth performance. Kuroiler birds significantly showed heavier mean body weight (p<0.05) at various critical growth stages observed than the Nigerian indigenous naked neck chickens reared under same conditions. The influence of genotype and sex on mean body weight and breast girth measures of chickens remain insignificant throughout early growth stages. However, at 6th, 8th and 10th week of age, Kuroiler breeds demonstrated superior growth rate and performance response compared to Nigerian indigenous naked neck fowls. Both chicken breeds exhibited differential growth patterns and sexual dimorphism in favour of male populations. Introduction and crossing of Kuroiler strains with Nigerian indigenous naked neck birds might result in better performance and adaptability.

scholarly journals COMPARISON OF SOME LINEAR BODY MEASUREMENT TRAITS OF LOCAL AND COMMERCIAL CHICKEN BREEDS OF SOUTH AFRICA

2021 ◽  
Vol 13 (1) ◽  
pp. 134-143
Author(s):  
Thobela Louis Tyasi ◽  
Khomotso Mashiloane ◽  
Kwena Mokoena
Keyword(s):  
Body Weight ◽  
Wing Length ◽  
T Test ◽  
Chest Circumference ◽  
Body Measurement ◽  
Layer Chicken ◽  
Commercial Chicken ◽  
Body Measurement Traits ◽  
Beak Length ◽  
Linear Body

Linear body measurement traits are used for the estimation of body weight in animal breeding to aid livestock farmers where the weighing scale is not available. The objective of the work was to determine the effect of breed on body weight (BW) and linear body measurement traits such as wing length (WL), keel length (KL), shank circumference (SC), chest circumference (CC) and beak length (BL) of two (Hy-line Silver Brown and Potchefstroom Koekoek) layer chicken layer breeds. A total of 100 layers with 50 for each breed were randomly selected for the study at the age of 22 weeks. Pearson’s correlation and Student T-Test were used for data analysis. Correlation was employed to examine the relationship between measured traits in each breed. Correlation findings showed that BW had a highly positive statistical significant correlation (p < 0.01) with WL (r = 0.76) in Potchefstroom Koekoek breed, while BW had a negative statistical significant correlation (p < 0.05) with WL (r = -0.27) in Hy-line Silver Brown chicken layer breed.  Student T-Test results indicated that Potchefstroom Koekoek chicken layer breed was statistically (P<0.05) heavier than Hy-line Silver Brown chicken layer breed. Potchefstroom Koekoek had longer wing length and chest circumference than Hy-line Silver Brown while Hy-line Silver Brown had longer (P<0.05) keel length, shank circumference and beak length than Potchefstroom Koekoek. It is concluded that the results suggest that Potchefstroom Koekoek chicken layer breed is a weightier indigenous layer but keel length, shank circumference and beak length might require improvement. It also suggests that improvement of WL might improve BW of Potchefstroom Koekoek breed while improvement of WL might decrease BW of Hy-line Silver Brown chicken layer breed.

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