اعلانات هامة

This study was conducted in AL Quneitera area - Department of Animal Production in year 2012 to study the study effect Lactation and day of production and udder half in electrical conductivity and other milk production parameters of Shami goat during Colostrum. 20 Shami goat in milking stage from first to forth were used. Electrical conductivity was measured in promilk samples directly before suckling for each udder half separately. Milk samples (50 ml) were taken from each goat to estimate the basis milk compound from fat, protein, lactose ,non fat solids, PH, density, total solids(TS), minerals, with field apparatus. Data was collected and analyzed in statistic program Spss by using variance analysis for repeated sires. The average of electrical conductivity level was 4.6 ± 0.56(ms/cm). The other milk production parameters from fat, protein, lactose, minerals, and non fat solids, TS, density and PH were 8.58 ± 0.22% , 4.09 ± 0.52%, 5.33 ± 0.73%, 0.82 ± 0.14%, 10.31 ± 1.20%, and 1.034 ± 0.0005% (g/ml) respectively. The results of statistic analyzes showed that there are a negative significant correlation between electrical conductivity in milk samples and milk production parameters from fat, protein, lactose, minerals, and non fat solids, TS, density and PH and the values of correlation were (r= -0.085 ,p<0.05; r = -0.371 ,p<0.01 ;r = -0.380 p<0.01 ;r = -0.275 ,p<0.01 ;r= -0.389.p<0.01 ; r = -0.194 ,p<0.01; = -0.345 p<0.01 r = -0.171, p<0.01, r = -0.047, p<0.01). But the relationship between electrical conductivity and milk PH was weak and negative and not significant and it value was (r = -0.05, P >0.05).

Keywords: Electrical conductivity, Shami goat, chemical composition of milk.