Background: The Osteopontin (OPN) is a highly phosphorylated glycoprotein in numbers of bovine tissues and milk. OPN has been reported to be associated with milk production in cattle. Objective: The genotype and allelic frequencies for OPN and its association with milk production will be evaluated in Iranian Holstein Bulls.   Materials and Methods: Bulls DNA (100) was isolated. Oligo was used f...

Yak are crossed with Bos taurus and Bos indicus cattle, including common local cattle breeds (via natural service) and via artificial insemination of frozen-thawed semen from improved breeds (e.g. Holstein Friesian). Female hybrids reach puberty and mate a year earlier than pure yaks. Nonpregnant F1 females usually have several estrus cycles in the same season and will generally calve every yea...

MicroRNAs (miRNAs) are important post-transcriptional regulators involved in animal adipogenesis, however, their roles in bovine fat deposition remain poorly understood. In the present study, we conducted a comparative RNA sequencing to identify the key miRNAs involved in beef lipid accumulation by comparing the backfat small RNA samples between Wagyu (high intramuscular fat) and Holstein (mode...

Crossovers generated by homologous recombination ensure proper chromosome segregation during meiosis. Crossover interference results in chiasmata being more evenly distributed along chromosomes, but the mechanism underlying crossover interference remains elusive. Based on large pedigrees of Holstein and Jersey cattle with genotype data, we extracted three-generation families, including 147,327 ...

This study describes the successful use of modified dorsolumbar epidural anesthesia with a fixed volume of anesthetic in a bovine referral center. Among the 130 Holstein cattle scheduled for flank surgery, 90 cattle received a mixed anesthetic consisting of 1 ml of xylazine hydrochloride and 3 ml of lidocaine hydrochloride by modified dorsolumbar epidural anesthesia. Eighteen cattle with dehydr...

The bovine MHC (BoLA) class II DRB3 alleles are associated with polyclonal expansion of lymphocytes caused by bovine leukemia virus (BLV) infection in cattle. To examine whether the DRB3*0902 allele, one of the resistance-associated alleles, is associated with the proviral load, we measured BLV proviral load of BLV-infected cattle and clarified their DRB3 alleles. Fifty-seven animals with DRB3*...

India is the foremost milk producing nation of the world, and homes the largest domesticated bovine population. But the average productivity of indigenous/non-descript animals is far below than that of Taurine cattle. Crossbreeding of low producing indigenous and nondescript cattle with high producing exotic breeds like Holstein Friesian and Jersey is followed as the breeding policy of the coun...

Bovine Leucocyte Adhesion Deficiency (BLAD) is a Holstein-Friesian HF) specific autosomal recessively inherited disorder characterized by recurrent pneumonia, ulcerative and granulomatous stomatitis, enteritis, periodontitis, loss of teeth, delayed wound healing, persistent neutrophilia and death at an early age [1]. BLAD is a disease characterized by a reduced expression of the adhesion molecu...

Electrocardiograms were recorded from 89 clinically healthy Holstein cattle divided into 10 age groups, comprising newborn calves (18 to 72 hours), 15 days, 1, 3, 6 and 9 months and 1, 3, 5, and 7 years of age. The electrocardiograms were recorded on a bipolar base apex lead, using limb lead I. Duration and amplitude of the P, QRS complexes, T waves and the PR, RR, QT and ST intervals were meas...

By means of discriminant analysis, it can be identified which class the individuals (data) desired to classified. In this study, was aimed identify that milk samples belong breed, applying analysis taken from cattle breeds (19 heads Jersey, 53 Holstein and 27 Charolaise) in first lactation. As a conclusion proper classification actualized rate, considered quite high like 90.6%, according compon...