in this study the data of 2332 lambs from 815 dams and 61 sires, collected during 1993-2004 in kermani sheep breeding station were used to estimate phenotypic, genetic and environmental trends for birth weight (bw), weaning weight (ww), 6 months weight (6mw), 9 months weight (9mw) and yearling weight (yw). heritability estimates were determined for each trait using derivative free reml procedur...

This study was performed to investigate two polymorphic sites from Cyp19 gene (PvuII and MspI) and one polymorphic site from ERα gene (SnaBI) in four cattle breeds including Mazandarani, Taleshi, Sistani and Simmental. In overall 278 samples for CYP19 and 206 samples for ERα marker sites were genotyped using polymerase chain reactionsingle-strand conformation polymorphism (PCR-RFLP) procedure. ...

The aim of this study was to refine the position of previously detected quantitative trait loci (QTL) on bovine chromosome 14 affecting milk production traits, using both linkage analysis (LA) and combined disequilibrium and linkage analysis (LDLA) methods, in Iranian Holstein dairy cattle. Analysis data was LRT (likelihood ratio test) and computed using the DMU (estimate the (co)variance compo...

the optimum dosage for field application bactimos (w.p.) was determined as 0.04g/m , when efficacy of four concentration of 0.01 , 0.02 , 0.04 and 0.08 gim2 were compared in 1 x i m2 artificial breeding sites. this dosage caused 69.8%, 55.6% and 43.6% anopheline and 83%, 47.8% and 29.7% culicine larval mortality, in 24.48% and 72 hrs post treatment, respectively. abate and fuel oil were signifi...

rhizomania is the most important disease of sugar beet in iran and some other parts of the world, and plays an essential role in decreasing sugar yield in fields. the best approach to control this disease is to use resistant varieties. tagging the resistance genes in breeding programs, by molecular markers is necessary. in this study, some breeding populations and commercial varieties of sugar ...