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Abstract

ABSTRACT


The aim of this study was investigate the effects of managerial strategies on acidosis prevention in transition period in Shahroud commercial dairy farms. The mentioned strategies include pay attention to the fiber importance and following up suitable rate of which with concentrate in required shares through transition diets, increasing the feeding frequency through day and benefiting from sodium bicarbonate for more buffering of rumen environment. All required information of this research obtained by distribution of questionnaire. The mentioned questionnaire includes the application method of above mentioned managerial strategies, relevant implemention costs and percentage of which in first part, involvement rate and occurrence of acidosis with relying upon clinical signs, therapeutic costs at second part and producing records such as production average for a head, gross income out of milk selling for a head per year, reproduction records, fertility average and its costs. Upon personal refer and distribution of relevant questionnaire about 50 herds, finally it was possible to specify the effects of these strategies on mentioned varibles by applying of Multiple Linear Regression method MLR. The results show a significant relation among these indices. Also the relation between variables were specified by Pearson correlation coefficients as well.

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