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 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 Estimation of genetic parameters for growth related traits at different stages of development in Paralichthys olivaceus (Temminck & Schlegel, 1846)

2016 ◽  
Vol 63 (3) ◽  
Author(s):  
F. Liu ◽  
S. L. Chen ◽  
L. Wang ◽  
Y. P. Zhang ◽  
Y. S. Tian ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Stage ◽  
Genetic Parameters ◽  
Developmental Stages ◽  
Growth Traits ◽  
Paralichthys Olivaceus ◽  
Correlation Coefficients ◽  
Breeding Value ◽  
Estimated Breeding Value ◽  
Estimation Of Genetic Parameters

Genetic parameters of growth traits at different growing stages of Paralichthys olivaceus (Temminck and Schlegel, 1846) were estimated using 30 families. The estimates of heritability for body weight at four developmental stages viz., 210, 450, 720 and 830 days of age, varied from 0.12 to 0.37. The heritability at 720 days of age was the lowest and that of 450 days was the highest. The maternal effect was 0.08 at 210 days, 0.03 at 450 days and almost zero (8.89 E-8 and 2.40 E-7) at 720 and 830 days. Correlation coefficients of the estimated breeding value (EBV) and phenotypic value (PV) of body weight at different developmental stages were 0.470-0.803, which were highly significant (p<0.01). Correlation of estimated breeding value (EBV) and phenotypic value (PV) was the highest at 210 days of age and the lowest at 720 days. Genetic correlation among the four stages showed large variation (0.339-0.811), which were highly significant except that of 210 and 830 days. The value and accuracy of estimating genetic parameters for growth traits at different stages was different. Therefore, the growth stage should be taken into account when designing a breeding program for growth traits in P. olivaceus.

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 Sexual dimorphism and phenotypic correlations among growth traits of exotic turkey (Meleagris gallopavo)

2020 ◽  
Vol 45 (5) ◽  
pp. 1-5
Author(s):  
A. A. Adeoye ◽  
A. D. Oladepo
Keyword(s):  
Sexual Dimorphism ◽  
Body Length ◽  
Wing Length ◽  
Growth Traits ◽  
Meleagris Gallopavo ◽  
Correlation Coefficients ◽  
State University ◽  
Wing Span ◽  
Phenotypic Correlations ◽  
Ondo State

This study was conducted to determine sexual dimorphism and phenotypic correlations among growth traits of six month old exotic turkeys raised at the Turkey Unit, Teaching and Research Farm of Ondo State University of Science and Technology, Okitipupa. Bodyweight, shank length, thigh length, body length, wing length, wing span and breast girth for Meleagris gallopavo (female and male) were measured using standard methods. Data collected on 102 exotic turkeys comprised of 61 female and 41 male were subjected to analysis of variance and Pearson's correlation. Bodyweight, shank length, thigh length, body length, wing length, wing span and breast girth for females were 8.16 kg, 8.31 cm, 22.29 cm, 68.47 cm, 32.93 cm, 73.65 cm and 57.24 cm respectively, while the corresponding values for males were 8.84 kg, 9.97 cm, 23.40 cm, 76.27 cm, 35.87 cm, 80.27 cm and 60.20 cm. The effect of sex on the variables was significant (p<0.05) except on bodyweight and thigh length. The bodyweight and thigh length were numerically higher in males (8.84 and 23.40) and lower values observed in females (8.16 and 22.29). The correlation coefficients were all positive for both sexes except in females where the correlation between bodyweight and shank length was negative (-0.031). Among the males the correlation coefficients ranged between 0.447 and 0.859 while in the females it ranged between -0.031 and 0.539. Sexual dimorphism was displayed virtually in all the variables considered and in a similar trend bodyweight could be predicted virtually by all the linear body measurements considered.

scholarly journals Phenotypic correlations between body weight and morphometric traits in progenies of mongrel rabbits

2021 ◽  
Vol 44 (3) ◽  
Author(s):  
U. H. Udoh
Keyword(s):  
Body Weight ◽  
Genetic Parameters ◽  
Correlated Responses ◽  
Economic Traits ◽  
Morphometric Traits ◽  
Phenotypic Correlations ◽  
Body Weights ◽  
Body Parameters ◽  
Linear Body ◽  
Strong Relationships

One of the pre-requisites for genetic improvement is knowledge of genetic parameters for important economic traits A research was conducted with progenies of mongrel rabbits to investigate the phenotypic correlations between body weight and morphometric traits. Rabbits were managed intensively for six months, and fed ad libitum proprietary feed (15% CP and 2300 kcal/kg ME), supplemented with forages. Progenies were identified with their dams for data collection. Body weight, and linear body measurements of head and neck circumferences, body, ear and face lengths, hind and forelimbs were analyzed. Measurements were taken once weekly for 10 weeks (70 days old). Body weights were taken from 7 days old whereas linear body parameters were taken from 14 days old. Phenotypic correlations between pairs of traits, estimated were positive, showed weak and very strong relationships. Values ranged between 0.455 and 0.986 (1 to 28 days old), 0.288 and 0.841 (29 to 49 days old), 0.174 and 0.781 (50 to 70 days old). The weakest relationship (0.174) existed between neck and head circumferences (50 to 70 days old) whereas the strongest relationship (0.986) existed between body and ear lengths (1 to 28 days old). Higher values (0.539 to 0.917) indicating strong relationships were obtained when estimates were not age specific. Correlated responses in body weight in progenies of mongrel rabbits are expected at varying strengths by selecting and improving any of the linear body parameters. Further breeding researches should investigate phenotypic correlations between body weight and morphometric traits in progenies of mongrel rabbits beyond 70 days of age. Phenotypic correlations involving more parameters should be investigated.

scholarly journals Genetic parameters for some growth traits of Nigerian local chickens

2017 ◽  
Vol 33 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Ifeanyichukwu Udeh
Keyword(s):  
Unbiased Estimator ◽  
Variance Components ◽  
Genetic Parameters ◽  
Mixed Model ◽  
Wing Length ◽  
Growth Traits ◽  
Genetic Correlations ◽  
Mass Selection ◽  
Minimum Norm ◽  
Local Chickens

Genetic parameters were estimated for bodyweight (BWT), shank length (SHL), and wing length (WL) of Nigerian local chicken (NLC) from 4 to 20 weeks of age by fitting dyadic mixed model (dmm) equations which yield estimates of variance components equivalent to minimum norm quadratic unbiased estimator (MINQUE). Data obtained from 600 chicks, progenies of 300 hens and 30 cocks were used for the analysis. The heritability estimates range from 0.08 to 0.80 for BWT, 0.03 to 0.69 for SHL and 0.22 to 0.47 for WL. The genetic correlations among BWT, SHL and WL at different ages were high and positive and range from 0.18 to 0.96 with the exemption of SHL and WL at 16 weeks (- 0.06). The phenotypic correlations were positive and range from 0.10 to 0.91. The results imply that NLC could be improved on any of the studied traits through mass selection and that improvement in one trait will result to correlated improvement in the others.

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.

scholarly journals Relationship between body weight and linear body measurements in the Cobb broiler chicken

2020 ◽  
Vol 4 (2) ◽  
pp. 001-006
Author(s):  
Abdul Muumin Sadick ◽  
Godson Aryee ◽  
Patrick Atta Poku Jnr ◽  
Clement Gyeabour Kyere
Keyword(s):  
Body Weight ◽  
Rural Areas ◽  
Broiler Chickens ◽  
Linear Regression Analysis ◽  
The Body ◽  
Body Measurements ◽  
Animal Science ◽  
Beak Length ◽  
Body Parameters ◽  
Linear Body

The study was carried out at the poultry section of the Department of Animal Science farm, University of Education Winneba (Mampong - Ashanti campus, Ghana) from July, 2018 to September, 2018. Data were collected from fifty randomly selected and tagged birds. The data were collected weekly for eight weeks., Head length (HL), Beak length (BL), Body length (BL), Wing length (WL), shank length (SL), shank circumference(SC) and height(H) were taken randomly on five birds in each replicate at a day in every two weeks using tape measure and Vernier calipers. The data collected were analyzed using simple linear regression analysis. The results from the study indicated that, all linear body measurements were significantly (P<0.01) effected for the model, intercepts and slopes of the regression lines with linear response with the best predictor of body weight indicated for shank circumference. It was concluded from the study that; linear body measurements could be used to predict the body weight of broiler chickens. It is recommended that in areas, especially rural areas, where weighing balance or scale may not be readily available, a tailor’s tape can be used to measure linear body parameters and thereafter used to estimate body weight of chickens from the predictive equation.

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