in this study, somatic cell counts (scc) of milk were determined in six industrial and traditional dairyfarms in tehran province during different seasons. the prevalence of udder disorders and mastitis wasestimated on the base of scc as an indicator as well. in this research, industrial and traditional dairyfarms during 9 months were studied by total 32620 scc records. milk samples were collect...

a simple inexpensive con!nuous quality control method, by means of eight basic blood coun!ng parameters, obtained from automated hematology analyzers, using pa!ent samples, is described. a few samples with low, normal and high values were selected and introduced to the instrument early in the morning as the first count, the results of which are plo#ed on the appropriate chart as dots. the same ...

Ten dairy farms supplying raw milk to the industry were investigated determine compliance with safety criteria (plate count at 30 °C and somatic cell count) of Regulation (EC) 853/2004. The relationship such lipid protein percentages was also evaluated. results demonstrated a great variability due different management systems each farm, regard milking hygiene, health status animals, prevention ...

The objectives of this study were to determine 1) the effect of intramammary infection on calf weaning weight, milk somatic cell count, and milk composition, and 2) the effect of parity on percentages of infected cows, infected quarters, and blind quarters. The number of infected quarters, milk somatic cell counts, milk components, and intramammary infection were studied at weaning in 164 beef ...

currently, somatic cell count (scc) and bacterial culture are considered as the gold standard of detecting subclinical mastitis. mastitis leads to proliferation of lymphocytes in the supramammary lymph nodes and subsequent enlargement of ipsilateral lymph node. ultrasonography can be used to survey these changes. a portable ultrasound machine with a 2-5 mhz convex transducer was used to identif...

genomic selection (gs) is a tool for prediction of breeding values for quantitative traits. for a successful application of gs, accuracy of predicted genomic breeding value (gebv) is a key issue to consider. here we investigated the accuracy of gebv in 345 genotyped iranian holstein cattle. the study was performed on milk, fat, protein yield and somatic cell count. four methods g-blup, bayes b,...