Implementation of Feed Efficiency in Iranian Holstein Breeding Program.

This study aimed to evaluate the economic impact of improving feed efficiency on breeding objectives for Iranian Holsteins. Production and economic data from seven dairy herds were used to estimate the economic values of different traits, and a meta-analysis was conducted to analyze the genetic relationships between feed efficiency and other traits. Economic weights were calculated for various traits, with mean values per cow and per year across herds estimated at USD 0.

Does Helicobacter pylori Infection Play a Role in Susceptibility to Brucellosis?

Brucellosis is endemic in Iran. Several studies have shown that brucellosis is associated with other infectious diseases. This study aimed to determine the relationship between Helicobacter pylori (HP) and brucellosis.

A new mutation in exon 2 of the bone morphogenetic protein 15 gene is associated with increase in prolificacy of Mehraban and Lori sheep.

Some mutations in bone morphogenetic protein 15 (BMP15) gene have been known to be associated with prolificacy in various breeds of sheep. Polymorphism of BMP15 gene exon 2 was studied in 100 Mehraban and 100 Lori ewes, using PCR-SSCP and DNA sequencing methods. A new point mutation (G → A) was found at position 57 of the amplified 312-b fragment of BMP15 gene exon 2.