scholarly journals The determination of growth in Akkeci (White goat) female kids by various growth models

2011 ◽  
Vol 51 (No. 3) ◽  
pp. 110-116 ◽  
Author(s):  
A. Kor ◽  
E. Baspinar ◽  
S. Karaca ◽  
S. Keskin
Keyword(s):  
Body Weight ◽  
Weibull Distribution ◽  
Body Length ◽  
Growth Models ◽  
Correlation Coefficients ◽  
Volume Index ◽  
Square Root ◽  
Mean Square ◽  
Weibull Statistical Distribution

This study aimed to determine the growth of 26 Akkeci (White goat = Saanen &times; Kilis (Bı) crossbreed) female kids by measuring their body weight, withers height, body length, heart girth depth, heart girth width, heart girth circumference, leg circumference and volume index in two-week intervals from birth to 500 days of age and by using different growth models (Monomolecular, Gompertz, Weibull and Richards). An approximate volume index was calculated by multiplying the values of heart girth depth, body length and heart girth width. The best one among these models was determined in respect of RMS (square root of Residual Means Squares which is calculated from the Square Root of Error Mean Square in ANOVA), R<sup>2</sup>%, Adjusted R<sup>2</sup>%, Mallow&rsquo;s C<sub>p</sub>statistic, and asymptotic correlation coefficients criteria. As a result, it was determined that Weibull growth model (which is not concerned with Weibull statistical distribution but is related to parameters of Weibull distribution) was suitable for the above-mentioned material and studied traits. &nbsp; &nbsp;

Waveband Selection for NIR Spectroscopic Analysis of Zn2+ in Soil

2013 ◽  
Vol 365-366 ◽  
pp. 737-740
Author(s):  
Li Jun Yao ◽  
Jie Mei Chen ◽  
Tao Pan
Keyword(s):  
Root Mean Square Error ◽  
Near Infrared ◽  
Spectroscopic Analysis ◽  
Correlation Coefficients ◽  
Nir Spectroscopy ◽  
Optimal Number ◽  
Moving Window ◽  
Mean Square ◽  
Selection For

Near-infrared (NIR) spectroscopy combined with moving window partial least squares (MWPLS) method was successfully applied to the waveband selection for the rapid chemical-free determination of Zn2+ in soil. Based on randomness and similarity, an effective approach was performed to obtain objective and practical models. The optimal MWPLS waveband was 1136-1252 nm, and the corresponding optimal number of PLS factors was 6. The validation root mean square error (V-SEP) and validation correlation coefficients (V-RP) of prediction were 15.658 mg kg-1 and 0.925, respectively. The Zn2+ prediction values of the validation samples are close to the measured values. The results provided a reliable NIR model and can serve as valuable references for designing the dedicated spectroscopic instruments.

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 and morphometric characteristics of Bangkaew dog in Phitsanulok Province, Thailand

2019 ◽  
Vol 20 (10) ◽  
Author(s):  
Suphawadee Yaemkong ◽  
PRAPASIRI JAIPONG ◽  
PATTHANUN KOTHAM ◽  
TUAN NGUYEN NGOC
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Body Height ◽  
Correlation Coefficients ◽  
Least Square ◽  
Morphometric Characteristics ◽  
Leg Length ◽  
Body Width ◽  
Black Color ◽  
Brown Color

Abstract. Yaemkong S, Jaipong P, Kotham P, Ngoc TN. 2019. Phenotypic and morphometric characteristics of Bangkaew dog in Phitsanulok Province, Thailand. Biodiversitas 20: 2877-2882. A research study was conducted to analyze phenotypic and morphometric characteristics of Bangkaew dogs in Mueang, Phromphirum, and Bangrakam districts, Phitsanulok Province, Thailand. In total, 54 Bangkaew dogs were randomly sampled by purposive sampling from 20 farmers between November 2018 and March 2019. The data consisted of nine phenotypic characteristics that were recorded visually and five morphometric characteristics that were obtained by using descriptive statistics and analysis of ANOVA to compare difference among means and correlation coefficients. Majority of the standard identities of Bangkaew dogs were according to the breed such as the guard coat around the face (100.00%), the guard coat around the neck or the chest coat (100.00%), the coat of belly (100.00%), the guard coat behind ears (100.00%), the lion’s leg shape (100.00%), the long coat from hip to the upper thigh (100.00%), and the plume tail (100.00%), except for the guard coat from the ruff around the shoulder (98.15%). Moreover, the coat of hair of Bangkaew dogs in this study was white-brown color (55.31%), followed by white-gray color (23.92%), white-black color (10.78%), brown color (6.44%), gray color (2.11%), and black color (1.44%), respectively. Least square means of males morphometric characteristics was significantly (p<0.05) greater than female body weight (21.44 ± 3.33 kg vs. 19.04 ± 3.01 kg), body height (49.52 ± 4.09 cm vs. 46.21 ± 5.30 cm) and leg length (38.64 ± 8.88 cm vs. 34.31 ± 5.75 cm), except for body width (19.48 ± 5.82 cm vs. 17.76 ± 4.24 cm; p>0.05), and for body length of females (55.76 ± 9.37 cm vs. 55.00 ± 7.18 cm; p>0.05) was superior to males of Bangkaew dogs. The correlations among morphometric characteristics such as body width vs. leg length, body length vs. body height, body weight vs. body height, body weight vs. body length, and body height vs. leg length, were 0.64, 0.56, 0.52, 0.34, and 0.33, respectively. These results implied that in order to conserve standard identities and improve morphometric characteristics, their typical characteristics such as structure, coat of hair and body size required by raisers should be considered in the breeding selection and mating system.

scholarly journals A Comparative Study of the Nonlinear Methods for Estimate Body Weight by Body Measurements on Different Sample Sizes in Morkaraman Sheeps

2021 ◽  
Author(s):  
Mutlu YAGANOGLU
Keyword(s):  
Body Weight ◽  
Correlation Analysis ◽  
Body Length ◽  
Growth Models ◽  
Nonlinear Models ◽  
Small Sample ◽  
The Body ◽  
Body Measurements ◽  
Sample Sizes ◽  
Small Sample Sizes

Abstract The objective of this study was to estimate body weight of Morkaraman sheeps from body measurements with nonlinear models. Selected 110 sheeps 3-5 years were scored for body weight, body length, height at wither, chest width and pump width. For determine relationships with body weight between body measurements, correlation analysis was performed. The results of the correlation analysis indicated that the highest relationship according to the all sample sizes were body weight between body length (0.95, 0.90, 0.83, 0.81). Considering all parameters included in the model, the parameter showing the highest correlation with body weight was determined as body length according to all sample sizes. the highest correlation was found in 50 sample sizes (r:0.95). According to the small sample sizes (10-20), Logistic and Saturation growth models can be used to determine the body weight by using body length, on the other hand, Incomplete gamma model is more succesful to estimate body weight when sample size is nearly 30 and 50.

scholarly journals Determination of the best model for estimation of genetic parameters on the Fars native chicken traits using Bayesian and REML methods

Genetika ◽  
2018 ◽  
Vol 50 (2) ◽  
pp. 431-447
Author(s):  
Ali Mohammadi ◽  
Yousef Naderi ◽  
Reza Nabavi ◽  
Fatemeh Jafari
Keyword(s):  
Body Weight ◽  
Bayesian Approach ◽  
Bayesian Method ◽  
Genetic Parameters ◽  
Genetic Parameter ◽  
Correlation Coefficients ◽  
Native Chicken ◽  
Egg Number ◽  
Estimation Of Genetic Parameters

This study was conducted to determine the best model for genetic parameter estimation on the Fars native chicken traits using Bayesian and REML Methods. Studied traits were body weight at first day (BW1), body weight at eighth weeks (BW8), body weight at 12th weeks (BW12), age at sexual maturity (ASM), egg number production (EGP) and mean egg weight during 28th ,30th and 32nd week ages (EGW) involving three generations 17, 18 and 19 during the years 2010 to 2012. Genetic parameters were estimated with REML method using WOMBAT software and with Bayesian approach using MTGSAM software. Based on AIC and DIC criteria, the most appropriate model was determined. Estimations of direct additive heritabilities for BW1, BW8, BW12, ASM, EGP and EGW by the best models using REML method were 0.31, 0.32, 0.29, 0.45, 0.24 and 0.22 and by Bayesian method were 0.36, 0.33, 0.30, 0.48, 0.26 and 0.25, respectively. The genetic correlation coefficients ranged from -0.709 between EGP and ASM to 0.844 between BW8 and BW12 (by Bayesian method) and ranged from -0.724 between ASM and EGP to 0.894 between BW12 and BW8 (by REML method). Generally, based on the employed criteria, the 1st and 2nd models can be suggested for analysis of body weight traits (BW1, BW8 and BW12), whereas for other traits (ASM, EGP and EGW), 1st, 5th, 4th and 6th models seems to be suitable for estimation of genetic parameters of the Fars Native fowls traits using Bayesian and REML Methods. The Bayesian approach recommended for estimation of genetic parameters on the Fars native chicken traits because this method used the prior distribution in the calculation process.

scholarly journals Sexual differentiation and phenotypic correlations among biometric traits of Nigerian local turkey (Meleagris gallopavo)

2020 ◽  
Vol 46 (5) ◽  
pp. 28-33
Author(s):  
A. A. Adeoye ◽  
J. E. Udoh ◽  
A. D. Oladepo
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Growth Traits ◽  
Meleagris Gallopavo ◽  
Correlation Coefficients ◽  
The Body ◽  
Linear Measurements ◽  
Wing Span ◽  
Phenotypic Correlations ◽  
Positive Correlations

One- hundred and twenty-four (124) Nigerian local turkeys at six months of age were used for this study. The turkeys were raised from day old in a commercial farm located at Ibadan and data were collected on growth traits to determine the effect of sex and phenotypic correlations among growth traits. Highest coefficient of variation was observed in body weight in both male (9.95 %) and female (15.74 %) while the least (5.71%) was observed for wing span in female and 4.95% for body length in male. Sex had significant effect (p<0.05) on all the variables in favour of male. The body weight, shank length, thigh length, body length, wing length, wing span and breast girth for males were 3.80 kg, 9.01 cm, 21.68 cm, 63.00 cm, 32.44 cm, 72.86 cm and 40.17 cm, respectively, while the corresponding values for female were 2.93 kg, 7.27 cm, 17.96 cm, 55.37 cm, 28.18 cm, 63.92 cm and 36.14 cm. The correlation coefficients between body weight and the linear measurements in the two sexes were positive and mostly significant in male. It ranged between 0.291 and 0.561 in male and 0.233 and 0.721 in female. Sexual dimorphism was obvious in all the traits considered in favour of male. The positive correlations between body weight and the linear body measurements in the two sexes means improvement in any of the traits will lead to improvement in the body weight.

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.

Correlation of body condition score, weight, measurements and effect of parity and stage of lactation on milk parameters of Gir cows

2016 ◽  
Vol 50 (2) ◽  
Author(s):  
Prashant Mashalji ◽  
M. F. Siddiqui ◽  
G. R. Channa ◽  
V. S. Ingle ◽  
Y. G. Kankarne
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Body Condition ◽  
Body Condition Score ◽  
Dairy Farm ◽  
Correlation Coefficients ◽  
Body Measurements ◽  
Fat Percentage ◽  
Stage Of Lactation ◽  
Condition Score

Experiment was conducted on 100 Gir cows of different parity and stage of lactation maintained at Ashti Dairy Farm, Ashti taluka Partur, district Jalna of Maharashtra state. The present experiment was carried out to know the effect of parities and stage of lactation on milk parameters <italic>viz</italic>; WeeklyMilk Yield (WMY), WeeklyFat CorrectedMilk Yield (WFCMY), Fatand Solid Not Fat (SNF) percent and correlation between Body Condition Score (BCS), Body Weight (BW) and body measurements viz; height at wither, height at hook, heart girth and body length with milk parameters. The Least Squares Analysis of Variance has revealed significant effect of parity on the WMY, WFCMY and Fat percentage whereas, significant effect of stages of lactation on the WMY and WFCMY of Gir cows. The positive to negative significant correlation coefficients of body condition score with WMY (0.110); Height at wither with WMY (0.131) and Fat percent (-0.156); Hearth girth with WMY (0.125) and Fat percent (-0.155) and Body length with Fat percent (-0.139) respectively.

Mandibular Protractions and Their Correlation with Meal Size in Juvenile Thai Snakes During Ingestion of Rodent Prey

2011 ◽  
Vol 4 (1) ◽  
pp. 31-33
Author(s):  
Merel J. Cox ◽  
David Chiszar ◽  
Hobart M. Smith
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Meal Size ◽  
Allometric Growth ◽  
Rodent Prey

Nine neonatal and juvenile snakes, four vipers and five nonvipers, were fed rodent meals varying in size, expressed as percent of snake body weight. The number of mandibular protractions and the time to complete swallowing were recorded, with both measures increasing linearly as a function of meal size. These young snakes routinely swallowed meals that were 50% of body weight, and ranged up to 80%, far higher than meals reported by previous workers studying adult vipers (36.4%) and nonvipers (18.4%). Furthermore, the slopes of regressions relating mandibular protractions to meal size in all of our snakes were lower than comparable slopes for adult vipers or nonvipers. We hypothesized that the relatively long and wide skulls of young snakes (i.e., as proportion of body length) were responsible for these ingestive accomplishments, with negative allometric growth being responsible for performance changes during ontogeny.

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