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46749

PREDICTION OF TOTAL MUSCLE WEIGHT FROM MORPHOMETRIC LIVE TRAITS IN RABBITS USING PRINCIPAL COMPONENT ANALYSIS

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Last updated: 04 Jan 2025

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Abstract

A total number of two hundred and eighteen New Zealand White rabbits were used to predict total muscle weight using nine live body measurements taken on the head, chest, loin, round and total body length and their three principle component varimax rotated scores. Total muscle weight (TMW) was more variable than any morphological live trait.
 The highest phenotypic correlations with total muscle weight were recorded with the live measurements of the most meat-producing regions in the body (r = 0.77, 0.75, 0.76, 0.60 and 0.58 for chest width, loin width, chest girth and abdomen girth, respectively). Results showed that out of the principal components (PCs) calculated, the first three explained 74.14% of the total variance. The PC1, PC2 and PC3 explained, respectively, 29.33, 23.23 and 21.58% of the generalized variance. Based on correlations of: (i) 0.913, 0.919, 0.582 and 0.594, PC1 is primarily a measure of width of chest and loin and girth and depth of chest, (ii) 0.705, 0.778 and 0.864, PC2 is primarily a measure of girth of chest, abdomen and round, (iii) 0.776, 0.791 and 0.696, PC3 is a measure of width of head and length of head and body. The stepwise involvement of PC1, PC2 and PC3 in regressions predicting TMW were as follows: TMW= 728.3 + 100.8 PC1 (R2 = 51%), TMW= 728.3 + 100.8 PC1 + 59.3 PC2 (R2= 69%) and TMW= 728.3 + 100.8 PC1 + 59.3 PC2 + 48.2 PC3 (R2 = 80%).
Conclusively,Apply of principal component analysis was beneficial for avoiding any possible multicolinearity to occur and, thus, excluding any erroneous decisions to be taken when morphological body measurements were put together in a multiple regression.
 
 

DOI

10.21608/ejrs.2015.46749

Keywords

Principal component analysis, body measurements, total muscle weight, Rabbits

Authors

First Name

Gouda

Last Name

Gouda

MiddleName

Fathy

Affiliation

Animal Production Department, Faculty of Agriculture, Ain Shams University, Shoubra El-Kheima, 11241 Cairo, Egypt

Email

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City

Ain Shams University, Shoubra El-Kheima, 11241 Cairo

Orcid

-

First Name

Ahmed

Last Name

Shemeis

MiddleName

Raieb

Affiliation

Animal Production Department, Faculty of Agriculture, Ain Shams University, Shoubra El-Kheima, 11241 Cairo, Egypt

Email

-

City

Ain Shams University, Shoubra El-Kheima, 11241 Cairo

Orcid

-

First Name

Omar

Last Name

Abdallah

MiddleName

Yousri

Affiliation

Animal Production Department, Faculty of Agriculture, Ain Shams University, Shoubra El-Kheima, 11241 Cairo, Egypt

Email

-

City

Ain Shams University, Shoubra El-Kheima, 11241 Cairo

Orcid

-

Volume

25

Article Issue

2

Related Issue

7226

Issue Date

2015-07-01

Receive Date

2015-03-09

Publish Date

2015-07-01

Page Start

185

Page End

196

Print ISSN

1110-2594

Online ISSN

2682-3330

Article File

EJRS_Volume 25_Issue 2_Pages 185-196.pdf

PDF . 320.1kB

Link

https://ejrs.journals.ekb.eg/article_46749.html

Detail API

https://ejrs.journals.ekb.eg/service?article_code=46749

Order

4

Type

Original Article

Type Code

868

Publication Type

Journal

Publication Title

Egyptian Journal of Rabbit Science

Publication Link

https://ejrs.journals.ekb.eg/

MainTitle

PREDICTION OF TOTAL MUSCLE WEIGHT FROM MORPHOMETRIC LIVE TRAITS IN RABBITS USING PRINCIPAL COMPONENT ANALYSIS

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Article

Created At

22 Jan 2023