scholarly journals Age- and sex-dependent regression parameters for estimating live weight frim body measurements of West African Dwarf sheep

2021 ◽  
Vol 39 (1) ◽  
pp. 169-179
Author(s):  
O. S. Sowande ◽  
B. A Orebela ◽  
O. S Iyasere
Keyword(s):  
Body Size ◽  
Linear Regression ◽  
Regression Models ◽  
Live Weight ◽  
West African ◽  
The Body ◽  
Body Measurements ◽  
Age Group ◽  
Best Fit ◽  
Age And Sex

The relationships between live weight and eight body measurements of West African Dwarf (WAD) sheep were studied using 300 animals under farm condition. The animals were categorized based on age and sex. Data obtained on height at withers (HW), heart girth (HG), body length (BL), head length (HL), length of hindquarter (LHQ), width of hindquarter (WHQ), head width(HDW), and loin girth (LG) were fitted into simple linear (change in body measurement is directly proportional to weight or body size), allometric (body measurements do not necessarily change in direct proportion to weight or body size), and multiple linear regression models to predict live weight from the body measurements according to age group and sex. Results showed that live weight and body measurements of ewe were higher than that of the ram. Live weight, HG, HW, WHQ, LG, BL, LHQ, HL, and HW increased with the age of the animals. In multiple linear regression model, WHQ, LHQ, HW, HL and HDW best fit the model for sheep aged ≤1; HG, LG, BL and HDW for 2 year-old sheep; HG, BL, and HL best fit the model for sheep 3 years age group; LHQ best fit the model for sheep of 4 years of age; while HL best fits sheep that were in 5 year age category. Coefficients of determination (R2) values for linear and allometric models for predicting the live weight of WAD sheep increased with age in all the body measurements (HW, HG, BL, HL, LHQ, WHQ, HDW and LG). Sex had significant influence on the model with R2 values consistently higher in females except the models for LHQ, WHQ, LG and BL were they the same with the males. Based on R2 values, it was concluded that both linear and allometric regression models could be used to predict live weight from body measurements of WAD sheep.   

Correlations between Speakers' Body Size and Acoustic Parameters of Voice

2007 ◽  
Vol 105 (1) ◽  
pp. 215-220 ◽  
Author(s):  
Julio Conzález
Keyword(s):  
Body Size ◽  
Significant Relationship ◽  
The Body ◽  
Age Group ◽  
Acoustic Parameters ◽  
Acoustic Measures ◽  
Age And Sex

Generally, there is a significant relationship between some acoustic measures (F0 and formant parameters) and the body size of speakers; however, data become less clear when age and sex variables are controlled. To date, no other vocal parameter apart from F0 has been studied in relation to body size. In the present study, correlations between a set of 27 parameters of the Multi-dimensional Voice Program (Kay Elemetrics Corp.) and 4 body measures were obtained from 134 speakers of both sexes belonging to one age group (20–29 years). Correlations within sex groups were null or very weak, and all significant coefficients were below .35.

scholarly journals Effect of age, sex and local government area on linear body measurements of WAD goat in Ogun State, Nigeria

2020 ◽  
Vol 40 (2) ◽  
pp. 143-150
Author(s):  
F. A. Aluko ◽  
O. E. Daramola ◽  
B. B. A. Taiwo
Keyword(s):  
Local Government ◽  
Body Length ◽  
Live Weight ◽  
West African ◽  
The Body ◽  
Limb Length ◽  
Body Measurements ◽  
West African Dwarf ◽  
West African Dwarf Goats ◽  
Dwarf Goats

One hundred and twenty West African Dwarf goats were used in this study. Observations were made from twelve different towns in Yewa North, Yewa South and Abeokuta North Local Government. West African dwarf goats were evaluated for phenotypic variation at different ages ranges from 1, 2 and 3 years. Variations in live weight and body measurements such as height at wither; body length, heart girth, fore limb length, hind limb length, face length, ear length, ear width, hip width and tail length were taken. The local government areas significantly (P<0.05, 0.001) affected body length, fore limb length, ear length, ear width, hip width and live weight. Age and sex significantly (P<0.01) affected all the body measurements. The mean live weight by age groups are 6.61 + 0.31kg, 13.10 + 0.60kg and 20.18 + 0.95kg for ages 1,2 and 3 respectively. The coat colour varied from black, brown, grey to white in WAD goats. Some colours were in patches, some uniform while others were spotted

scholarly journals Correlation between live weight and body measurements in certain dog breeds

2021 ◽  
Vol 51 (2) ◽  
pp. 151-159
Author(s):  
B. Yüceer Özkul ◽  
P.C.K. Doka ◽  
D. Özen ◽  
F.T. Özbaşer ◽  
B. Özarslan ◽  
...  
Keyword(s):  
Linear Regression ◽  
Regression Model ◽  
Linear Regression Model ◽  
Live Weight ◽  
The Body ◽  
Acceptable Level ◽  
Body Measurements

The purpose of this study was to determine the correlation between live weight and body measurements in Zağar, Zerdava, and Çatalburun dogs. Animal materials were obtained from various regions of Turkey. A total of 304 dogs from three breeds were used: Zağar (45 females, 59 males), Zerdava (50 females, 50 males), and Çatalburun (62 females, 38 males). Live weights and certain body measurements were determined. A linear regression model was created using the parameters obtained in this study. The bodyweights calculated with the body measurements were found to be at a high or acceptable level in the Zağar, Zerdava, and Çatalburun genotypes (R2 = 0.902, 0.467, and 0.697, respectively).

scholarly journals ФІЗІОЛОГІЧНІ ПОКАЗНИКИ КУРЧАТ-БРОЙЛЕРІВ ПІСЛЯ ВНУТРІШНЬОГО ЗАСТОСУВАННЯ МІНЕРАЛЬНОГО КОМПЛЕКСУ MG++ В УМОВАХ ГОСПОДАРСТВА

2017 ◽  
pp. 92-95
Author(s):  
В. П. Бердник ◽  
О. О. Бублик ◽  
Т. М. Марченко ◽  
В. І. Щербак ◽  
О. Г. Трирог
Keyword(s):  
Body Weight ◽  
Live Weight ◽  
Economic Benefits ◽  
The Body ◽  
Group Method ◽  
Age Group ◽  
Live Body Weight ◽  
Positive Effect ◽  
Experimental Group

Наведені результати випробування на 537 курчатах-бройлерах (635 контрольних) в умовах господарства препарату, виготовленого на основі розчину  полтавського бішофіту. У  курчат, яким давали препарат внутрішньо з водою,  порівняно з контролем, була більшою середня жива масса тіла у  43-добовому віці на 50 г, 73-добовому  – на 128 г і 111-добовому – на  103 г. До 43-добового віку загинуло із розрахунку від  початкової загальної кількості 16 (2,9 %) курчат-бройлерів  у дослідній групі і 30 (4,72 %) у контрольній. На контрольних  курчатах-бройлерах, порівняно із дослідними, мали економію на препараті, який не застосовували, і меншій кількості  використаних  кормів, але одержано значно більше збитків   через нижчі прирости живої маси тіла та більшу кількість загиблих. Економічна  вигода  від застосування препарату лише  до 43-добового віку курчат становить 5,8 гривень на  вкладену 1 гривню. Given results of test on 537 chickens-broilers (635 of control) in terms of economy drug produced on the basis of the solution of Poltava bishofit (SPB). Drug was given chickens-broilers of 5-day age group method internally with water in 3 cycles of 24-hour intervals over 7 times in each cycle and 7-day interval between cycles. The chicks, which were given the drug, compared with the control, had a greater average live weight of the body in 43-day age of 50 g, 73-day – 128 g and 111-day – 103 g it shows its positive effect on organisms of chicks up to 2,5 months (time of observations) after the last application in 38-th days of their lives. The drugs based on the SPB will have greater efficiency in the application of the repair chicks and adult hens, i.e. those who live more than 2,5 months. The 43-day age 16 broiler died of the calculation of the initial total number (2,9 %) in experimental group and 30 (4,72 %) in the control. On control broilers, compared with research, savings on the drug, which is not used, and smaller amounts of used feed, but we received much more losses due to lower increases in live body weight and more fatalities. The total value of the economic benefits of the drug only to 43-day age of chicks is 5,8 UAH on each invested 1 UAH.

scholarly journals Calving difficulty as related to body weights and measurements of cows and calves in a herd of Gascon breed

2008 ◽  
Vol 53 (No. 5) ◽  
pp. 187-194 ◽  
Author(s):  
D. Bureš ◽  
L. Bartoň ◽  
R. Zahrádková ◽  
V. Teslík ◽  
M. Fiedlerová
Keyword(s):  
Birth Weight ◽  
Correlation Coefficients ◽  
Live Weight ◽  
The Body ◽  
Body Measurements ◽  
Factors Influencing ◽  
Bull Calves ◽  
Pelvic Area ◽  
Body Weights ◽  
Calving Difficulty

This study was conducted to evaluate the body weights and measurements of 86 Gascon calves and their dams. The effects of the course of parturition, parity of the dams, sex of the calves, and live- or stillborn calves were analysed. Phenotypic correlations between different measurements and calf birth weight as well as the course of parturition were calculated. Internal pelvic measurements were significantly associated with the occurrence of assisted calvings and stillborn calves. Primiparous cows had a smaller pelvic area, lower live weight, and more frequent difficulty in calving compared to older cows. A higher incidence of difficult calvings was observed in bull-calves due to their higher (<I>P</i> < 0.001) birth weight. High and significant correlation coefficients were determined between the birth weight and body measurements of the calves as well as between the calf birth weight and the course of parturition (<I>r</i> = 0.34; <I>P</i> < 0.01). Negative correlations (<I>r</i> = –0.21 to –0.30) were calculated between the internal pelvic measurements of the cows and the course of parturition score. It was concluded that the internal pelvic measurements of the dam and the size and shape of the calf were the factors influencing the course of parturition in this study to the largest extent.

scholarly journals Influence of Fat and Moisture Content in the Processing of Light Requeijão

2013 ◽  
Vol 2 (6) ◽  
pp. 12
Author(s):  
Rita de Cássia Santos Navarro da Silva ◽  
Valéria Paula Rodrigues Minim ◽  
Andréa Alves Simiqueli ◽  
Luis Antônio Minim
Keyword(s):  
Linear Regression ◽  
Regression Models ◽  
Multiple Linear Regression Model ◽  
Central Composite Rotatable Design ◽  
Moisture Contents ◽  
Fat Reduction ◽  
Sensorial Attributes ◽  
Preference Map ◽  
Best Fit ◽  
Central Composite

<p>The objective of this study was to evaluate the influence of fat and moisture contents in the sensory characteristics and acceptance of light <em>requeijão</em>. The experiment followed the Central Composite Rotatable design. Formulations were characterized by Conventional Profile and the acceptability was evaluated by 100 consumers. The results were analyzed by Analysis of Variance, fitting of regression models and Preference Map. The multiple linear regression model showed the best fit for all sensorial attributes. <em>Requeijão</em> samples that fat reduction was coupled with increasing moisture demonstrated intermediate intensity of the sensory properties and showed the best acceptance among consumers. Such a result indicated that the reduction in fat levels should be associated to the increase in moisture of the final product so that there is equilibrium in the sensorial properties and the optimization the acceptance of the consumers.</p>

scholarly journals Factors associated with parasite dominance in fishes from Brazil

2016 ◽  
Vol 25 (2) ◽  
pp. 225-230
Author(s):  
Cristina Fernandes do Amarante ◽  
Wagner de Souza Tassinari ◽  
Jose Luis Luque ◽  
Maria Julia Salim Pereira
Keyword(s):  
Linear Regression ◽  
Body Length ◽  
Regression Models ◽  
Mixed Model ◽  
Multiple Linear Regression Model ◽  
Mixed Effects ◽  
The Body ◽  
Linear Regression Models ◽  
Biological Aspects ◽  
The Relationship

Abstract The present study used regression models to evaluate the existence of factors that may influence the numerical parasite dominance with an epidemiological approximation. A database including 3,746 fish specimens and their respective parasites were used to evaluate the relationship between parasite dominance and biotic characteristics inherent to the studied hosts and the parasite taxa. Multivariate, classical, and mixed effects linear regression models were fitted. The calculations were performed using R software (95% CI). In the fitting of the classical multiple linear regression model, freshwater and planktivorous fish species and body length, as well as the species of the taxa Trematoda, Monogenea, and Hirudinea, were associated with parasite dominance. However, the fitting of the mixed effects model showed that the body length of the host and the species of the taxa Nematoda, Trematoda, Monogenea, Hirudinea, and Crustacea were significantly associated with parasite dominance. Studies that consider specific biological aspects of the hosts and parasites should expand the knowledge regarding factors that influence the numerical dominance of fish in Brazil. The use of a mixed model shows, once again, the importance of the appropriate use of a model correlated with the characteristics of the data to obtain consistent results.

scholarly journals Regression models of sonographic parameters of the kidneys in practically healthy women of the ectomorphic somatotype depending on the peculiarities of body size

2018 ◽  
pp. 53-58
Author(s):  
О. S. Ustymenko
Keyword(s):  
Body Size ◽  
Regression Models ◽  
Left Kidney ◽  
The Body ◽  
Healthy Population ◽  
Scientific Cooperation ◽  
Healthy Women ◽  
Body Sizes ◽  
Length Width ◽  
The Right

The study of the constitutional features of organs in the healthy population makes it possible to find out the peculiarities of changes in their sizes in different pathologies. The purpose of the work is to construct and analyze the regression models of individual sonographic sizes of the kidneys in practically healthy women of the ectomorphic somatotype, depending on the features of anthropo-somatotypological parameters of the body. From the database of research center of the National Pirogov Memorial Medical University, Vinnytsya (within the framework of the agreement on scientific cooperation) were taken the primary sonographic parameters (length, width, front and rear size, area of the longitudinal and cross section of the kidneys and their sinuses, as well as the volume of the right and left kidneys) and anthropometric indices (according to V. V. Bunak in the modification of P. P. Shapаrenko) of practically healthy women-ectomorphs of the first mature age, who in the third generation live in the Podillia region of Ukraine. Regression models of individual sonographic sizes of the kidneys, depending on the features of anthropo-somatotypological parameters of the body, are constructed using the license package “Statistica 6.1”. In practically healthy women of the ectomorphic somatotype all 16 possible reliable regression models of sonographic parameters of the right and left kidneys, based on the anthropometric and somatotypological parameters with determination coefficient R2 from 0.607 to 0.973, were constructed. Constructed regression models of sonographic parameters of both kidneys in practically healthy women of the ectomorphic somatotype most often include body diameters (24.2% of the total number of indicators included in the models), circumferential body sizes (20.9%), cephalometric indices (19.8 %) and the thickness of skin and fat folds (14.3%). The regression models of sonographic parameters of the right kidney in women of the ectomorphic somatotype most often include diameters and circumferential body sizes (by 27.3% of the total number of indicators included to the models of right kidney) and cephalometric indices (18.2%). The regression models of the sonographic parameters of the left kidney in women of the ectomorphic somatotype most often include body diameters and cephalometric indices (by 21.3% of the total number of indices included to the models of the left kidney) and the circumferential body size and thickness of skin and fat folds (by 14.9%).

scholarly journals Multivariate characterization of morphological traits in West African cattle sires

2016 ◽  
Vol 59 (3) ◽  
pp. 337-344 ◽  
Author(s):  
Amadou Traoré ◽  
Delphin O. Koudandé ◽  
Iván Fernández ◽  
Albert Soudré ◽  
Isabel Álvarez ◽  
...  
Keyword(s):  
Cattle Breed ◽  
Principal Component ◽  
West African ◽  
The Body ◽  
Body Measurements ◽  
Qualitative Traits ◽  
Cattle Breeds ◽  
African Cattle ◽  
Type Traits

Abstract. A total of 183 adult sires belonging to nine West African cattle breeds sampled in 67 villages of Mali, Burkina Faso and Benin were assessed for 16 body measurements and 18 qualitative traits. Within type of cattle (zebu, sanga or taurine), the different breeds analysed showed large differences in body measurements. In general, taurine breeds had lower average values than the zebu breeds while sanga cattle tended to have intermediate values. Principal component analysis identified three factors characterising body measurements. Factor 1 summarised the information provided by those traits characterising the size of the individuals and explained 59.0 % of the variability. Factor 2 tended to gather information characterising the body width and explained 8.0 % of the variation. Less representative, Factor 3 (6.6 % of the variability) had no clear interpretation. Qualitative traits did not allow to distinguish among either cattle groups or breeds. Two Correspondence Analysis Dimensions computed on qualitative traits (explaining 26.2 and 15.5 % of the variability, respectively) did not allow to differentiate between zebu, sanga or taurine cattle breeds. Our results confirm that, in the framework of a general appearance, body measurements are the main criteria for differentiating West African cattle breeds. Furthermore, the current research has not allowed to identify breeding preferences on qualitative type traits in West African cattle sires. Therefore, homogenisation of the appearance of individuals within cattle breed is not expected.

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