- Category: Volume 87
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Estimation of daily milk production from some body measurements in local goat population under Tunisian arid conditions
ATOUI AHLEM1
LAROUSSI AICHA2
ABDENNEBI MOLDI1
BEN SALEM FARAH1
NAJARI SGHAIER1
1Laboratory of Livestock and Wildlife, Institute of Arid Regions, Medenine, University of Gabès, Tunisia
2 National Agronomic Institute of Tunisia, University of Tunis, Tunisia.
DOI: https://doi.org/10.55416/sunb.jns01.2201.08702
Abstract – In order to estimate some equations of daily milk production from linear body measurements of 85 local lacting goats were used in the present study. The morphostructural parameters included body length, withers height, heart girth and hip height, the body weight and the daily milk were recorded weekly from from the 7th postpartum day up to the end of lactation period. Four models were tested to estimate daily milk from some body measurements. A high correlation between daily milk and all linear body measurements was obtained. A significant correlation (p<0.05) were obtained between all linear body measurements and daily milk yield. The high value of correlation was presented between body weight and the daily milk (r=0.66). A estimates equation with coefficient of determination (44%) has been got to estimate daily milk with (R2). The daily milk of local goat could be estimated from linear body measurements and it could be use the goats' body weight and withers height as a good measurements to predict daily milk with reasonable R2.
Keywords: Local goats, daily milk production, regression coeffecient, body measurement, prediction.