Content:         1   Instruction to authors         5   Pathological changes of Endometrium in Infertile Ewes   Sasani , F ., Nekui - Jahromi , O . A ., Zangane - Pour , H .       13  Determination of Polymorphism of FecB gene in Najdi and native goats of Khouzestan province by PCR - RFLP   Mohammadi , Gh ., Alimahmoud , M .       21   Epidemiologic and laboratory study on strategic plane of Rinderpest as recurrent disease   Soleimani , S ., Varshovi , H ., Taleb shoshtari , A ., Hagizadeh , A .       33 Effect of different concentration of H 2 O2 under different temperature on decontamination of salmonella on chicken skin   Maktabi , S ., Khandan , S ., Derakhshan , L .       43   A survey on Giardia and Cryptosporidium contamination of carrot and cantaloupe juice in Shiraz and its association with some hygienic indices   Razavi , S . M ., Farjami - Kish , Gh ., Bahrami , S .       53   Determination of frequency of verotoxigenic Escherichia coli isolated from bovine feces in Kerman   Khalili , M ., Mansouri , Sh ., Afzali , M ., Mohammad - Abadi , M . R .       61  Evaluation of activity and serum levels of hepatic enzymes and Iron in cattle infected with Theileria in Golestan province   Ranjbar - Bahadori , S ., Ane - Mohammadzadeh , Y .       69  A survey of Linguatula serrata infection in sheep in Tabriz abattoir , East Azarbaijan Province   Mirzaei , M .*, Asgarinezad , H ., Rezaeisaghinsara , H .