The aim of this study was to investigate the potential association between growth hormone GH/AluI and growth hormone receptor GHR/AluI polymorphisms with milk yield and reproductive performances in Holstein dairy cows in Iran. Blood samples of 150 Holstein cows were collected and their genomic DNA was extracted using Gene-Fanavaran DNA extracting kit. Fragments of the 428 bp of exon 5 growth ho...

a holstein heifer with symptoms of dystocia was admitted in the large animal clinic at the university of tabriz. in the vaginal examination, the fetus was found at posterior presentation and by doing someobstetrical maneuvers, a male calf was delivered. an interesting phenomenon was the presence of two skinsacs in dimensions of 12 × 12 cm and 12 × 18 cm at the right and left upper cervical regi...

It would seem probable that the disease is due to some form of systemic infection. The deformity is characteristic. It can be well demonstrated with the X-rays. The patient should lie on her face with the vacuum tube below. The acuteness of the sub-pubic arch is then clearly shown. The pubic rami may be almost parallel. External pelvimetry gives most interesting results. The following table sho...

Dystocia considers one of the most common obstetrical problems in cattle, especially heifers; current study achieved to demonstrate Dystocia's impact on viability fetus heifers and cows. The involved 15 multiparous cows aged 3-7 years 10 these animals suffered abnormality calving. showed higher significantly (P≤0.01) (60%) than (40%) also, rate difficult male birth was greater 7 (70%) female we...

The objective of the present retrospective cross-sectional study was to estimate prevalence postpartum clinical diseases (PPCDs) dairy cows reared under existing management conditions smallholder zero-grazing farming in Gasabo district, Rwanda. data PPCDs were collected retrospectively from 250 which calved for period 01 November 2019 29 February 2020. diagnosed hour calving until 40 days by an...