scholarly journals Predicting Body Weight of Ethiopian Indigenous Chicken Populations from Morphometric Measurements

2021 ◽  
Vol 9 (6) ◽  
pp. 1138-1143
Author(s):  
Fikrineh Negash
Keyword(s):  
Body Weight ◽  
Multiple Regression ◽  
Correlation Coefficients ◽  
Stepwise Multiple Regression ◽  
Regression Equations ◽  
Body Measurements ◽  
Indigenous Chicken ◽  
Morphometric Measurements ◽  
Measuring Tape ◽  
The Relationship

The purpose of this study was to estimate the relationship between body weight (BW) and morphometric measurements of Ethiopian indigenous chicken populations and to develop prediction equations used to estimate BW from body measurements. A total of 621 chickens comprising 134 males and 487 females reared under smallholder management conditions were used for the study. Body weight and morphometric measurements including body length (BL), chest circumference (CC), shank length (SL), and shank circumference (SC) were taken using a hanging scale and a textile measuring tape, respectively. The relationship between BW and morphometric measurements was determined using Pearson’s correlation coefficients (r) and stepwise multiple regression analyses. Descriptive statistics indicated that male birds were heavier than female birds. Correlation results revealed that body weight was significantly and strongly correlated with SL (r = 0.76) in both sexes, and moderately correlated with SC (r = 0.69), BL (r = 0.67), and CC (r = 0.52) in male birds, BL (r=0.68) and SC (r = 0.59) in female birds. Compared to other measurements, SL best predicted BW in both male and female birds, with coefficients of determination (R2) = 0.58. Combining SL with other body measurements (BL, CC, and SC) generally improved the predictive power of the equation. Thus, multiple regression equations that included a combination of the four linear body measurements are more suitable for predicting BW of Ethiopian indigenous chicken populations.

scholarly journals Morphological characterization of Arab and Oromo goats in northwestern Ethiopia

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Oumer Sheriff ◽  
Kefyalew Alemayehu ◽  
Aynalem Haile
Keyword(s):  
Body Weight ◽  
Coat Color ◽  
Strong Association ◽  
Correlation Coefficients ◽  
Field Research ◽  
Morphological Characterization ◽  
The Body ◽  
Regression Equations ◽  
Body Measurements ◽  
Chest Girth

Abstract Background An exploratory field research was conducted in northwestern Ethiopia, to characterize the morphological features of Arab and Oromo goat populations as an input to design community-based breeding programs. Ten qualitative and nine quantitative traits were considered from 747 randomly selected goats. All data collected during the study period were analyzed using R statistical software. Results Plain white coat color was predominantly observed in Arab goats (33.72%) while plain brown (deep and light) coat color was the most frequent in Oromo goats (27.81%). The morphometric measurements indicated that Oromo goats have significantly higher body weight and linear body measurements than Arab goats. Positive, strong and highly significant correlations were obtained between body weight and most of the body measurements in both goat populations. The highest correlation coefficients of chest girth with body weight for Arab (r  =  0.95) and Oromo (r  =  0.92) goat populations demonstrated a strong association between these variables. Live body weight could be predicted with regression equations of y  =  − 33.65  +  0.89  ×  for Arab goats (R2  =  90) and y  =  − 37.55  +  0.94  ×  for Oromo goats (R2  =  85), where y and x are body weight and chest girth, respectively, in these goat types. Conclusions The morphological variations obtained in this study could be complemented by performance data and molecular characterization using DNA markers to guide the overall goat conservation and formulation of appropriate breeding and selection strategies.

scholarly journals Morphological characterization of Arab and Oromo goats in northwestern Ethiopia: implications for community-based breeding programs

2020 ◽  
Author(s):  
Oumer Sheriff ◽  
Kefyalew Alemayehu ◽  
Aynalem Haile
Keyword(s):  
Body Weight ◽  
Coat Color ◽  
Strong Association ◽  
Correlation Coefficients ◽  
Field Research ◽  
The Body ◽  
Regression Equations ◽  
Body Measurements ◽  
Breeding Programs ◽  
Chest Girth

Abstract Background: An exploratory field research was conducted in Northwestern Ethiopia, to characterize the morphological features of Arab and Oromo goat populations as a first step to design breeding programs. Ten qualitative and nine quantitative traits were considered from 747 randomly selected goats. All data collected during the study period were analyzed using R statistical software, version 3.5.2, 2018. Results: Plain white coat color was predominantly observed in Arab goats (33.72%) while plain brown (deep and light) coat color was the most frequent in Oromo goats (27.81%). The morphometric measurements indicated that Oromo goats have significantly (P < 0.001) higher body weight and linear body measurements than Arab goats. Positive, strong and highly significant (P < 0.001) correlations were obtained between body weight and most of the body measurements in both goat populations. The highest correlation coefficients of chest girth with body weight for Arab (r = 0.95) and Oromo (r = 0.92) goat populations demonstrated a strong association between these variables. Live body weight could be predicted with regression equations of y = -33.65 + 0.89x for Arab goats (R2 = 90) and y = -37.55 + 0.94x for Oromo goats (R2 = 85), where y and x are body weight and chest girth, respectively, in these goat types. Conclusions: The morphological variations obtained in this study could be complemented by performance data and molecular characterization using DNA markers to guide the overall goat conservation and formulation of appropriate breeding and selection strategies.

scholarly journals Height Estimation Using Arm Span and Hand Length Measurements

2017 ◽  
Vol 15 (2) ◽  
pp. 23-25
Author(s):  
Biswas Satyal ◽  
Abhishek Poudel
Keyword(s):  
Body Height ◽  
Correlation Coefficients ◽  
Regression Equations ◽  
Cross Sectional ◽  
Standing Height ◽  
Arm Span ◽  
Measuring Tape ◽  
Males And Females ◽  
Hand Length ◽  
The Relationship

Introduction: Arm span and hand length can be used for the estimation of an individual stature. Arm span, hand length, foot length, head circumference etc. have been proved to be useful to correctly estimate the height of a person. It can be useful in various medico legal purposes. Objectives: The present study was undertaken to find the correlation between the arm-span and hand length with the standing height of both males and females and to derive regression equations for estimation of their height. Materials and Method: This cross sectional type of descriptive study was carried out with a total number of 200 Nepalese medical students consisting of 120 male and 80 female aged between 18 to 24 years. Stature, arm span and hand length were measured directly from the subjects by using anthropometric technique by a measuring tape and a spreading caliper. The data taken were statistically analyzed by computation. The relationship between body height, arm span and hand length were determined using simple correlation coefficients. Result and Conclusion: In this study, the correlation between the arm-span and hand length with the standing height of both males and females was found to be an accurate predictor of the height and regression formulae were derived for calculating the height of male or female with the arm-span and hand length.

scholarly journals Relationship between heterosis, weight gain, and body measurements of Nellore and Charolais calves

2020 ◽  
Vol 55 ◽  
Author(s):  
Tiago Albandes Fernandes ◽  
Liliane Cerdótes ◽  
Ricardo Zambarda Vaz ◽  
João Restle ◽  
Otoniel Geter Lauz Ferreira
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Body Length ◽  
Genetic Group ◽  
Daily Weight Gain ◽  
Body Measurements ◽  
Average Daily Weight Gain ◽  
Morphometric Measurements ◽  
The Relationship

Abstract: The objective of this work was to assess the effect of genetic group and heterosis on the relationship between body weight and morphometric measurements, in purebred and crossbred animals from the second (G2) and third (G3) generations of Nellore and Charolais calves. Body weight (BW), average daily weight gain (ADG), foreleg circumference (FC), thoracic girth (TG), body length (BL), and croup height (CH) were measured at birth and at 63, 210, and 365 days of age in animals from G2 and G3. Charolais animals were superior to Nellore ones for gains BW, ADG, BL, and TG, as well as for the ratio between BW gain and CH gain; Nellore animals were superior for CH gains. Crossbred animals of both generations were superior to the purebred animals for gains of BW, BL, and CH. In G2, the predominance of Charolais genes resulted in greater gains of BW, ADG, FC, and TG. The G3 animals were superior to the purebred animals for ADG, FC, and TG. No differences were found for the ratio between gains of weight and morphometric measurements. Heterosis and complementarity are apparent for weight and body measurements of crossbred calves from rotational crossings.

scholarly journals Hubungan Ukuran Tubuh dengan Bobot Badan dan Bobot Karkas Bandikut (Echymipera rufescens) Di Kampung Manawi Distrik Angkaisera Kabupaten Kepulauan Yapen

2021 ◽  
Vol 11 (3) ◽  
pp. 195
Author(s):  
Sonei G. Bonai ◽  
Frandz Pawere ◽  
Hanike Monim
Keyword(s):  
Body Weight ◽  
Live Weight ◽  
Carcass Weight ◽  
Regression Equations ◽  
Body Measurements ◽  
Alternative Source ◽  
Average Percentage ◽  
Males And Females ◽  
The Relationship ◽  
Average Body

Abstract Bandicoot  (Echypera rufescens)  is an alternative source of animal protein and a source of germplasm for humans, especially local communities in Papua. These animals are obtained by hunting and/or setting traps in the community's closest habitat.  The aim of this research was to determine the relationship between body measurements and body weight and carcass weight by utilizing 32 bandicoots, 16 males and 16 females, with a live weight range of 400 - 2000 grams in Yapen Island Regency, Papua. The study was conducted by using an explorative study and the data were analyzed using multiple correlations and regression. The carcass was obtained by slaughtering the head, removing the blood, and then removing the hair by burning (singeing). The average body weight of male bandicoots was 1403 grams and that of females was 598.75 grams, while the average carcass weights of males and females were 1050.06 grams and 415 grams, respectively. The average heart girth of male bandicoots is 23.03 cm and that of females is 17.81 cm, while the average body length of male and female bandicoots is 25.19 cm and 18.91 cm, respectively. The average percentage of male bandicoot carcasses was 73.99 cm and that of females was 69.22 cm. The correlation coefficient between body weight and body measurements was 0.911 while the carcass weight and body measurements were 0.901. The correlation between body weight and carcass of male bandicoots were 0.911 and 0.901. The correlation between body weight and carcass of female bandicoot were 0.702 and 0.747. The regression equation for male bandicoots to estimate body weight (BB) and carcass weight (BK) were BB = (-1705, 594+84,432 X1 +46,234X2) and (BK = -432,092 +71,545 X1 +33,127X2). The female bandicoot regression equations to estimate body weight (BB) and carcass weight (BK) were: (BB = -509,134+39,437 X1 +21,443X2) and (BK= -436,703 +31,720 X1 +15,164X2). Keywords: Bandicut (Echypera rufescens); Carcass length; Carcass weight; Carcass; Heart girth; Live weight; Singeing   Abstrak Bandikut (Echypera rufescens) merupakan  salah satu sumber alternatif protein hewani dan sumber plasma nutfa bagi manusia khususnya masyarakat lokal yang berada di Papua. Hewan ini diperoleh dengan cara berburu dan/atau  pemasangan jerat di habitat terdekat masyarakat. Penelitian tentang hewan ini bertujuan untuk mengetahui hubungan antara ukuran-ukuran  tubuh dengan  bobot badan dan bobot karkas dengan memanfaatkan  32 ekor bandikut masing-masing 16 ekor jantan dan 16 ekor betina dengan kisaran berat hidup 400 -  2000 gram.  Karkas diperoleh dengan cara bagian kepala disembelih, dikeluarkan darah kemudian dilakukan penghilangan bulu dengan cara dibakar (singeing). Karkas terdiri dari daging, tulang dan lemak setelah kepala, isi rongga dada dan perut, kaki belakang bagian bawah dan kaki depan bagian bawah serta ekor dikeluarkan. Rata-rata bobot badan bandikut jantan adalah 1403 gram dan betina adalah 598,75 gram, sedangkan rata-rata bobot karkas jantan dan betina masing-masing adalah 1050,06  gram dan 415 gram. Rata-rata lingkar dada bandikut  jantan adalah 23,03 cm dan betina adalah 17,81 cm, sedangkan rata-rata panjang badan bandikut jantan dan betina berturut-turut adalah 25,19 cm dan 18,91 cm. Rata-rata persentase karkas bandikut jantan adalah 73,99 cm dan betina adalah  69,22 cm. Koefisien korelasi antara bobot badan  dengan ukuran-ukuran tubuh adalah 0,911 sedangkan antara bobot karkas dengan ukuran-ukuran tubuh adalah 0,901. Korelasi bobot badan dan karkas bandikut jantan adalah  0,911 dan  0.901. Korelasi bobot badan dan karkas bandikut betina adalah sebesar 0,702 dan 0,747. Persamaan regresi bandikut jantan untuk menduga bobot badan (BB) dan bobot karkas (BK) adalah BB = (-1705, 594+84,432 X1 +46,234X2 dan BK = -432,092 +71,545 X1 +33,127X2. Persamaan regresi bandikut betina untuk menduga bobot badan (BB) dan bobot karkas (BK) adalah BB = -509,134+39,437 X1 +21,443X2 dan BK= -436,703 +31,720 X1 +15,164X2. Kata kunci: Bandicut (Echypera rufescens); Berat karkas; Berat potong; Karkas; Lingkar dada; Panjang karkas.

PSVI-8 Meta-regression Analysis to Determine the Relationship Between Growing Pig Body Weight and Variation

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 218-219
Author(s):  
Andres Fernando T Russi ◽  
Mike D Tokach ◽  
Jason C Woodworth ◽  
Joel M DeRouchey ◽  
Robert D Goodband ◽  
...  
Keyword(s):  
Body Weight ◽  
Regression Analysis ◽  
Sample Size ◽  
Polynomial Regression ◽  
Data Sets ◽  
Regression Equations ◽  
Prediction Equations ◽  
Data Set ◽  
Rate Of Increase ◽  
The Relationship

Abstract The swine industry has been constantly evolving to select animals with improved performance traits and to minimize variation in body weight (BW) in order to meet packer specifications. Therefore, understanding variation presents an opportunity for producers to find strategies that could help reduce, manage, or deal with variation of pigs in a barn. A systematic review and meta-analysis was conducted by collecting data from multiple studies and available data sets in order to develop prediction equations for coefficient of variation (CV) and standard deviation (SD) as a function of BW. Information regarding BW variation from 16 papers was recorded to provide approximately 204 data points. Together, these data included 117,268 individually weighed pigs with a sample size that ranged from 104 to 4,108 pigs. A random-effects model with study used as a random effect was developed. Observations were weighted using sample size as an estimate for precision on the analysis, where larger data sets accounted for increased accuracy in the model. Regression equations were developed using the nlme package of R to determine the relationship between BW and its variation. Polynomial regression analysis was conducted separately for each variation measurement. When CV was reported in the data set, SD was calculated and vice versa. The resulting prediction equations were: CV (%) = 20.04 – 0.135 × (BW) + 0.00043 × (BW)2, R2=0.79; SD = 0.41 + 0.150 × (BW) - 0.00041 × (BW)2, R2 = 0.95. These equations suggest that there is evidence for a decreasing quadratic relationship between mean CV of a population and BW of pigs whereby the rate of decrease is smaller as mean pig BW increases from birth to market. Conversely, the rate of increase of SD of a population of pigs is smaller as mean pig BW increases from birth to market.

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 Relation between swine weight and morphometric measurements

2020 ◽  
Vol 9 (9) ◽  
pp. e891998013
Author(s):  
Mônica Calixto Ribeiro de Holanda ◽  
Marco Aurélio Carneiro de Holanda ◽  
Leandro Ricardo Rodrigues de Lucena
Keyword(s):  
Mathematical Model ◽  
Body Weight ◽  
Regression Models ◽  
Hip Circumference ◽  
Morphometric Measurements ◽  
Large White ◽  
Male And Female ◽  
Lactation Phase ◽  
Relationship Of ◽  
The Relationship

Objective was to define a mathematical model that better explain the relationship of the animals weight depending not only on the animals age but also on the animals morphometric measurements. 40 piglets, half Duroc-Large White blood, were used, 20 males and 20 females, from 3 to 35 days of age (lactation phase) initially weighing 1.518 ± 0.121 kg and from 36 to 66 days of age (calving phase) with a body weight of 7.010 ± 0.704 kg. The animals were weighed weekly on a digital balance. The relationship of animal weight, age and morphometric measurements of male and female piglets were performed using regression models: existing, linear and power. The models were evaluated according to nine criterialinear model was the most adequate to explain the weight of male pigs, while for female pigs was the power. The age of the pig, the shank and palette length, as well as the circumference of the shank jointly explain the weight of the male piglets. The weight of females is explained jointly by age, body length, thorax and hip circumference.

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