The aim of this study is economic evaluation and investigation of some factors effect as season,demo-graphic characters (manager characters) and some productive and reproductive disorders in sheepproduction farms under Egyptian conditions. Data were randomly collected from commercial sheep farms fromdifferent localities in Menofia governorate that located in South of Nile delta in Egypt. The data include seasonthat grouped to (cold season) extended from 21 September-20 March and (warm season) from 21 March-20September to determine its effect on birth weight, litter size and kidding interval. The data were collectedsummarized and analyzed by statistical computer program (SPSS/PC, 16).
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