scholarly journals Prediction of body weight with morphometric traits in some broiler chicken strains

2021 ◽  
Vol 44 (3) ◽  
pp. 15-22
Author(s):  
R. J. Nosike ◽  
D. N. Onunkwo ◽  
E. N. Obasi ◽  
W. Amaduruonye ◽  
H. O. Ukwu ◽  
...  
Keyword(s):  
Body Weight ◽  
Broiler Chicken ◽  
Wing Length ◽  
The Body ◽  
Coefficient Of Determination ◽  
Morphometric Traits ◽  
Predict Body Weight ◽  
Body Parameter ◽  
Accuracy Of Prediction ◽  
Linear Body

Morphometric traits also called linear body measurements or conformation traits are important parameters in predicting body weight especially in commercial breeders and producers. Thus, the study was carried out to predict body weight of broiler using linear body measurement. In this study, a total of 270 day old broiler chicks comprising of 90 chicks each of Abor Acre, Ross and Marshal Strains were used. Data were collected on body weight using body measurements to include breast length (BRL), thigh width (TW), shank length (SL), keel length (KL), wing length and drumstick length (DL). The regression analysis was simple linear regression. The values of the coefficient of determination (R2) in Abor Acre, Ross and Marshall strains ranged from 89.8 – 99.8; 88.4 – 98.9; and 80.8 – 99.5 respectively with thigh width showing the highest % R2 value of 99.8% in week 2; 66.5 – 97.9; 60.3 – 80.4 and 28.6 – 72.3 respectively with breast length (97.9%) having the highest % R2 value. This showed that breast length was the best predictor of the body weight of the broiler in week 4; 38.5 – 100; 88.0 – 98.6; 17.0 – 94.8 with shank length (100%) showing a 100% R2 value. This showed that breast length was the best predictor of the body weight of the broiler in week 4; 38.5 – 100; 88.0 – 98.6; 17.0 – 94.8 with shank length (100%) showing a 100% R2 value in week 6; 76.9 – 96.3, 72.2 – 88.8 and 58.1 – 97.6 respectively with wing length recording the highest % R2 value in week 6; 76.9 – 96.3, 72.2 – 88.8 and 58.1 – 97.6 respectively with wing length recording the highest value (97.9%) week 8. The different strains had different coefficient of determination (R2) values above 50% with different linear body parameter at different ages of the birds, indicating that any of the linear body parameter could be used to predict body weight of broiler chicken although, accuracy of prediction increased with increasing R2 value. Amongst all the linear body parameters evaluated, the shank length of Abor Acres strain had highest R2 value (100%) in week 6. Thus shank length was the best linear body parameter with 100% accuracy of prediction, and may be useful criterion in estimation of growth and prediction of body weight.

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 Observations on some morphometric parameters and body weight of Fulani ecotype chicken sampled in Niger State, Nigeria

2020 ◽  
Vol 44 (4) ◽  
pp. 19-28
Author(s):  
S. Yusuf ◽  
A. M. Ayoola ◽  
O. A. Falowo ◽  
S. S. A. Egena ◽  
T. Z. Adama ◽  
...  
Keyword(s):  
Body Weight ◽  
Coefficient Of Variation ◽  
Positive Relationship ◽  
Wing Length ◽  
Morphometric Parameters ◽  
Coefficient Of Determination ◽  
Direct Effects ◽  
Morphometric Traits ◽  
Predict Body Weight ◽  
High Coefficient

 The study was conducted to evaluate morphometric traits (body length, body girth, wing length, Shank length, thigh length) and their association with body weight in Fulani Ecotype Chicken (FEC). Seventy-eight Fulani ecotype chickens were used for the  experiment.They were fed compounded diet of 24% CP and 3213kcal/kg of metabolize energy for the first eight weeks, and 20% CP and 2948 kcal/kg from 9-12 weeks. The birds were kept on deep litter throughout the experiment. Feed and water were offered ad libitum.Measurements were taken on body weight and five morphometric parameters at 4, 8 and 12 weeks of the experiment for analysis. The results showed that body weight had the highest coefficient of variation (34.90%) at the end of the 4 week, thigh length at the end of the 8 week (5.08%), and body girth at the end of the 12 week (33.00%). Correlation between body weight and the morphometric parameters evaluated were observed to be positive and significant (p<0.05) except for correlation between body weight and thigh length at 4 week. The direct effects of the parameters measured at 4, 8 and 12 weeks were all significant (p<0.05) except for thigh length at week 4. Conclusively, the study revealed the existence of a positive relationship between the measured morphometric traits and body weight of Fulani ecotype chicken at 4, 8 and 12 weeks of the experiment and that shank length could be used to predict body weight at 4,8 and 12 weeks based on the high coefficient of determination(R ). Observations on some morphometric parameters and body weight of Fulani ecotype chicken sampled in Niger State, Nigeria

scholarly journals Body weight and morphometric traits of fulani ecotype chickens in South Western Nigeria are closely related

2020 ◽  
Vol 44 (5) ◽  
pp. 19-23
Author(s):  
O. J. Ogunshola ◽  
S. A. Daramola ◽  
O. B. Omotoso ◽  
O. I. Baki ◽  
C. A. Chineke
Keyword(s):  
Body Weight ◽  
Egg Production ◽  
Goodness Of Fit ◽  
Live Weight ◽  
The Body ◽  
Quadratic Model ◽  
Body Parts ◽  
Morphometric Traits ◽  
Body Weights ◽  
Accuracy Of Prediction

The native chickens constitute about 80 percent of the 120 million poultry birds found in Nigeriabut have not been adequately characterized. Thus, the study was undertaken to establish the relationship among body weight and morphometric traits of thirty six Fulani Ecotype chickens raised for 25 weeks. Body weights were collected per bird and the morphometric traits (body length, drumstick length, drumstick circumference, breast girth, nose to shoulder, shoulder to tail and height at withers) were measured with tape rule on weekly basis. The measured parameters were subjected to correlation and regression analyses. Analysis showed that positive and high significant correlation existed between body weight and morphometric traits (p< 0.01). The result showed that accuracy of prediction was attained with linear and quadratic models but quadratic model had theoretical advantage over the linearmodelwith respect to its goodness of fit to the data. This means that an increase in growth rate of the body parts would correspondingly cause an increase in live weight gain of the bird. In conclusion, body weight and morphometric traits could be used to separate males and females Fulani Ecotype chicken at 17 weeks old. At this age, males appeared bigger than the females and their combs were well pronounced, this would help both sexes to grow uniformly, prevent indiscriminate mating before attaining the age of sexual maturity and help in selection of Fulani Ecotype chicken for improvement in meat and egg production.

scholarly journals Prediction of grasscutters (Thryonomis swinderianus) body weight from linear body measurements

2021 ◽  
Vol 41 (1) ◽  
pp. 264-271
Author(s):  
A. J. Henry ◽  
S. N. Ibe ◽  
B. O. Asuquo
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Goodness Of Fit ◽  
Correlation Coefficients ◽  
Tail Length ◽  
Experimental Period ◽  
The Body ◽  
Coefficient Of Determination ◽  
Body Measurements ◽  
Linear Body

A study was conducted to investigate the relationship between linear body measurements (LBMs) and body weights of grasscutters at 2, 4 and 6 weeks of age. Simple linear correlation procedure was used to establish the strength of linear relationships and associations between the different linear body measurements with body weight. These parameters were also subjected to step-wise regression analysis. The goodness of fit (R2) was tested to determine the contribution of each independent variable measured to the prediction of the dependent variable, the body weight of grasscutters at different ages of 2, 4,6, 8, 10, 12, 14, 16, 18 and 20 weeks. One hundred and thirty-nine (139) juvenile grasscutters obtained from 24 parents comprising of 18 does and 6 bucks were used for the study. Experimental animals were raised under a mixed feeding regime throughout the experimental period of 20 weeks. The linear body measurements assessed are head length (HL), body length (BL), heart girth (HG), ear length (EL) and tail length (TL). Correlation coefficients (r) between body measurements and weights were generally positive and significant (p < 0.01) at 2 weeks, demonstrating strong relationships between variables. At 4 weeks, correlation coefficients ranged from 0.013 to 0.829 whereas at 6 weeks values ranged from -0.230 to 0.859. Coefficient of determination (R2) varied from 0.926 to 0.997, 0.965 to 0.989 and 0.930 to 0.991 at 2, 4 and 6 weeks, respectively The positive correlation coefficients observed for body length and heart girth shows that these parameters can be improved upon for grasscutters raised under intensive management. Results from this study further revealed that body weight of grasscutters can be estimated under field condition using the ear,head, body lengths and heart girth in the absence of a weighing balance.

Effect of Breed and Sex on Body Weight and Linear Body Measurements of Turkeys (Meleagris gallopavo)

2019 ◽  
pp. 1-5
Author(s):  
I. M. Chana ◽  
M. Kabir ◽  
O. Orunmuyi ◽  
A. A. Musa
Keyword(s):  
Body Weight ◽  
Wing Length ◽  
Meleagris Gallopavo ◽  
The Body ◽  
Body Measurements ◽  
Neck Length ◽  
Linear Measurements ◽  
Randomized Design ◽  
Chest Girth ◽  
Linear Body

Aim: The aim of this study was to investigate the effect of breed and sex on body weight and linear body measurements of 100 Turkeys which included 50 Norfolk and 50 Mammoth breeds each. Study Design and Duration: The experiment lasted for 20 weeks during which the performance parameters were monitored in 100 Turkeys using completely randomized design. Methodology: The body weight and linear measurements were taken at an interval of two weeks (i.e. day 1, 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20 weeks). Parameters monitored were shank length (cm), back length (cm), chest girth (cm), neck length (cm), thigh length, and wing length and body weight. Results: Result obtained showed that there where significant differences (P<0.05) in body weight across the breed with Norfolk having 2.70±0.04 and Mammoth 2.55±0.04. The linear measurements studied (body length, neck length, back length, shank length, thigh length, wing length, and chest girth) showed that the Norfolk had superiority over the Mammoth breed. Conclusion: Result showed remarkable and better growth performance of male turkeys than their female counterparts for all traits and ages. Also, higher values in linear body parameters noted in males.

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 Correlation and path coefficient analysis of body weight and morphometric traits of two exotic genetic groups of ducks in Nigeria

2015 ◽  
Vol 44 (1) ◽  
pp. 1-9 ◽  
Author(s):  
A Yakubu ◽  
MM Muhammed ◽  
MM Ari ◽  
IS Musa-Azara ◽  
JN Omeje
Keyword(s):  
Body Weight ◽  
Path Analysis ◽  
The Body ◽  
Path Coefficient ◽  
Body Parts ◽  
Leg Length ◽  
Morphometric Traits ◽  
Thigh Circumference ◽  
Pekin Ducks ◽  
Plateau State

The study aimed at describing objectively the interdependence between body weight (BWT) and morphometric traits in Khaki Campbell and Pekin ducks using multivariate path analysis technique. Measurements were taken on one hundred and ninety seven (197) randomly selected 10-week old Khaki Campbell and Pekin ducks, respectively in Plateau State, Nigeria. The birds were reared on deep litter in a semi-intensive system where they were kept in a fenced area provided with water ponds and locked up in the poultry house during the night. The body parts measured were, body length (BDL); thigh length (THL); thigh circumference (THC); breast circumference (BTC); bill length (BLL); neck length (NKL); neck circumference (NKC); shank length (SHL); shank width (SHW); total leg length (TLL) and wing length (WL). General linear model was used to study genotype and sex effects. Pekin ducks had a superior advantage (p<0.05) over their Khaki Campbell counterparts in all the body parameters estimated. Sexual dimorphism (p<0.05) was in favour of male ducks.  Pairwise phenotypic correlations between BWT and morphometric traits were positive and significant (p<0.01), ranging from 0.38-0.95 and 0.35-0.92 for Khaki Campbell and Pekin ducks, respectively. Path analysis revealed that BDL was the variable of utmost importance directly influencing BWT in male Khaki Campbell and Pekin ducks (path coefficient=0.535 and 0.508, respectively; p<0.01) while BTC and SHL were the most responsible parameters affecting BWT in female Khaki Campbell and Pekin ducks [path coefficient=0.594 (P<0.01) and 1.197 (p<0.05), respectively]. The optimum regression models for the prediction of BWT in Khaki Campbell ducks included BDL, SHL, BTC and NKC (male)  and BDL, WNL and BTC (female); while in their Pekin counterparts, BDL, BLL and BTC (male) and BDL and SHL (female) were incorporated.DOI: http://dx.doi.org/10.3329/bjas.v44i1.23112            Bang. J. Anim. Sci. 2014. 44 (1): 1-9

scholarly journals Prediction of Body Weight of a Person Lying on a Smart Mat in Nonrestraint and Unconsciousness Conditions

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3485 ◽  
Author(s):  
Tae-Hwan Kim ◽  
Youn-Sik Hong
Keyword(s):  
Neural Network ◽  
Body Weight ◽  
Evaluation Criteria ◽  
The Body ◽  
Average Error ◽  
Average Weight ◽  
Prototype System ◽  
Grid Structure ◽  
Predict Body Weight ◽  
Weight Prediction

We want to predict body weight while lying in bed for an elderly patient who is unable to move by himself/herself. To this end, we have implemented a prototype system that estimates the body weight of a person lying on a smart mat in nonrestraint and unconsciousness conditions. A total of 128 FSR (force sensing resistor) sensors were placed in a 16 × 8-grid structure on the smart mat. We formulated three methods based on the features to be applied: segmentation, average cumulative sum of pressure, and serialization. All the proposed methods were implemented with four different machine-learning models: regression, deep neural network (DNN), convolutional neural network (CNN), and random forest. We compared their performance using MAE and RMSE as evaluation criteria. From the experimental results, we chose the serialization method with the DNN model as the best model. Despite the limitations of the presence of dead space due to the wide spacing between the sensors and the small dataset, the MAE and the RMSE of the body weight prediction of the proposed method was 4.608 and 5.796, respectively. That is, it showed an average error of ±4.6 kg for the average weight of 72.9 kg.

scholarly journals Enzymatic programs for broilers

2009 ◽  
Vol 52 (spe) ◽  
pp. 233-240 ◽  
Author(s):  
José Otávio Berti Sorbara ◽  
Alice Eiko Murakami ◽  
Eliane Saiuri Nakage ◽  
Francisco Piracés ◽  
Alexandra Potença ◽  
...  
Keyword(s):  
Body Weight ◽  
Broiler Chicken ◽  
Body Weight Gain ◽  
Positive Control ◽  
Negative Control ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
The Body ◽  
Feed Conversion ◽  
Total Phase

Two trials were conducted on floor pens to evaluate the performance of broilers fed with diets contained different carbohydrases enzyme programs at different ages. Trial 1- The body weight gain (BWG) was affected by the Negative Control (NC) treatment (P<0.05). However, when the birds were fed with the NC diet + Amilase (AMY)+Xilanase (XYL), the BWG improved and reached the same level as the Positive Control (PC). Trial 2- The birds received enzymes supplementation in the total phase and others only in the grower phase.The ME reduction by 120 kcal/kg increased the feed conversion ratio (FCR) (P<0.05) when compared to PC and none of the enzyme programs was able to recover the performance. It can be concluded that it is possible to supplement with AMY during the role period of broiler chicken life or use an enzymatic program with AMY or AMY+XYL only in the grower phase.

Morphometric differentiation of Moroccan indigenous Draa goat based on multivariate analysis

2015 ◽  
Vol 57 ◽  
pp. 81-87 ◽  
Author(s):  
M. Ibnelbachyr ◽  
I. Boujenane ◽  
A. Chikhi
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Fixed Effects ◽  
The Body ◽  
The Other ◽  
Group Method ◽  
Morphometric Traits ◽  
Mahalanobis Distances ◽  
Live Body Weight ◽  
Improvement Programs

SummaryThe Moroccan goat livestock is characterized by the existence of different phenotypes distributed among diverse geographic locations. The objective of this study was to analyse the morphometric traits that differentiate the Draa breed from the other local populations raised in areas close to its cradle zone. Eight morphometric measurements were taken on 287 goats in South-eastern and Southern Morocco. The variance analysis, fitting a model that included the random effect of animal and the fixed effects of population, gender and age of animal, was used. Mahalanobis distances were calculated between identified populations and an Unweighted Pairs Group Method Analysis tree was built. Draa goats had the highest height at withers (61.5 cm), heart girth (74.4 cm), body length (64.6 cm) and live body weight (27.2 kg). These morphometric traits varied significantly among populations as well as the age and the gender of animal. The most discriminating traits between the identified populations were the body length, the heart girth, the hair length, the horn length, the ear length and the live body weight. Draa animals had the largest genetic distances from the other populations and appeared more distinguished from them. This differentiation can contribute in defining the phenotypic standard of the breed and in orienting its genetic improvement programs in the future.

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