Indian Journal of Animal Research

  • Chief EditorK.M.L. Pathak

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Indian Journal of Animal Research, volume 50 issue 5 (october 2016) : 794-798

Path analysis of body weight in grower and finisher pigs

Machebe N.S.*1, Ezekwe A.G., Okeke G.C., Banik S.2
1<p>Department of Animal Science, Faculty of Agriculture,&nbsp;University of Nigeria, Nsukka, Enugu State, 410001, Nigeria.</p>
Cite article:- N.S.*1 Machebe, A.G. Ezekwe, G.C. Okeke, S.2 Banik (2016). Path analysis of body weight in grower and finisher pigs . Indian Journal of Animal Research. 50(5): 794-798. doi: 10.18805/ijar.11319.

The aim of this study was to set up direct and indirect casual effects between body weight and biometric measurements of breeding gilts at growing and finishing stages of production using path analysis. Body weights of 50 crossbred (Landrace x Large White) female pigs were measured along with four biometric traits (body length, heart girth, flank-to-flank, height-at-withers) on each animal during growing and finishing stages of production. A computed mean of 1150 measurements per biometric trait taken during the entire study was subjected to path coefficient analysis using the correlation matrix approach. High positive and significant correlations (>84.3%) were observed between different biometric measurements. However, path analysis of these traits on body weight of pigs revealed that heart girth is the major contributor to the body weight of the pig with a higher amount of direct effect of 0.6539 (R2 = 95.25). The direct effects of body length and flank-to-flank measurements on body weight of the pigs were less. These traits mostly affect body weight indirectly via heart girth. Finding of the present investigation demonstrated that heart girth was the most important contributor to body weight of grower and finisher pigs and thus was recommended for quick estimation of body weight of breeding gilts under field or market conditions than other biometric traits. In addition, it could also be used for the construction of selection index for breeding gilts at both phases of growth.

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