BACKGROUND Multiple births occur frequently in some Iranian sheep breeds, while infertility scarcely occurs. Mutation detection in major fecundity genes has been explored in most of Iranian sheep flocks over the last decade. However, previously reported single nucleotide polymorphisms (SNPs) for bone morphogenetic protein receptor-(BMPR)-1B and growth differentiation factor ) GDF9( known to aff...

background:abortion is one of the most important factorsreducing lambing rate and consequently profitability of sheepfarms. in addition to financial losses, it is also important from azoonotic point of view. objectives: the aim of this study wasto investigate bacterial abortifacient agents in an outbreak ofabortion occurring in afshari sheep in the northwest of zanjanprovince. methods:vaginal s...

genetic improvement programs may improve disease resistance in animal production. the best-characterized genetic control of disease resistance and immune response in animals is the one associated with the major histocompatibility complex (mhc). the ovine lymphocyte antigenof drb1 gene encodes cell surface glycoproteins that initiate immune responses by presenting processed antigenic peptides to...

introduction one of the animal breeding aims is increasing the economic efficiency. therefore, mating among selected animals in order to enhance economic efficiency should also supply variation in population for next generations’ selection. this study was performed to estimate performance in cross breed lambs resulting from crosses of shal, moghani, afshari and varamini rams with varamini ewes,...

This study investigated the effect of dietary supplementation with calcium salts of fatty acids using 48 Afshari ewes randomly allocated to four treatments. All groups used in flushing period and only the source of energy were different between rations. The ewes were divided into four groups: A-barely grain; group B-received 5% of CSFA with source of flaxseed oil (w3); group C-received 5% of CS...

This study investigated the effect of dietary supplementation with calcium salts of fatty acids using 48 Afshari ewes randomly allocated to four treatments. All groups used in flushing period and only the source of energy were different between rations. The ewes were divided into four groups: A-barely grain; group B-received 5% of CSFA with source of flaxseed oil (w3); group C-received 5% of CS...

Beckmann [1] derives bounds on the length of reduction chains classes simply typed λ-calculus terms which are exact up-to a constant factor in their highest exponent. Afshari et al. [2] obtain similar acyclic higher-order recursion schemes (HORS) by embedding them and applying Beckmann's result. In this article, we apply proof strategy directly to HORS, proving exactness chain obtaining size la...

pseudoparasitus talebii nemati, malekshah-koohi & afshari n. sp. is described and illustrated based on female specimens collected from soil in golestan province, gorgan region, iran. the definition of pseudoparasitus oudemans is revised and new definition is presented.