HomeScience Asia Reviewvol. 1 no. 1 (2020)

META-ANALYSIS OF DIFFERENT PREDICTION MODELS ON THE WEIGHT ESTIMATION OF PHILIPPINE NATIVE PIGS USING EXTERNAL BODY MEASUREMENTS

Irene F Almazan | Elmar D Serrano

 

Abstract:

Nora C. Cabaral Elmar D. Serrano Mindoro State College of Agriculture and Technology ABSTRACT Prediction models (PM) for Philippine native pigs (PhilNP) weight estimation were already published. However, its reliability, proper utilization, application on farmer’s level is not yet investigated, thus determining the accurate method for PhilNP weight estimation using meta-analysis was conducted and validated using 232 heads PhilNP. The experiment followed a 2x8 factorial CRD. Factor A represents the sex while factor B represents the seven (7) PM and the ABW. Scheffe’s Test was used to determine the differences between treatments. Correlation between the ABW and external body measurements of PhilNP was analyzed using the Pearson correlation. Results revealed that males are typically larger than females due to sexual dimorphisms, which were observed on the ABW, BL, FG, and HG of all the PhilNP weighed and measured. The BL (r=0.80;p<0.01) and HG (r=96;p<0.01) were highly correlated with the ABW regardless of sex. On the other hand, FG is moderately correlated (r=0.52;p<0.05) with ABW, regardless of sex. Findings showed that regardless of sex, PM1(BW,kg=-47.57+0.84*HG,cm+0.27*BL,cm);PM2(BW,kg=6.32+0.83*HG,cm+0.27*BL,cm);PM5(BW,kg=35.59+0.95*HG,cm);anPM7(BW,kg=37.60+0.64*HG,cm+0.33*FG,cm) can be used by pig raisers particularly smallholders as an alternative method for PhilNP weight estimation during marketing to reduced their losses. However, results recommended PM5(BW,kg=-35.59+0.95*HG, cm) for faster and easier body weight estimation for PhilNP since only HG requires to be obtained before marketing.