In recent years there has been renewed interest in the adaptation of cattle to challenging environments, largely driven by advances in genomic methods. The current interest in tick resistance is understandable given the major production and welfare implications of tick infestation in tropical and subtropical zones where around 70% of beef cattle are located. Heritability for tick burden in catt...

This study was carried out to determine the seroprevalence of Mycobacterium avium subsp. paratuberculosis (MAP) infection of cattle in selected districts in the central region of Uganda. Until recently MAP infection was unknown in any domestic or wild life species in Uganda and the neighbouring regions. To determine the extent of the challenge posed by this new threat, 943 heads of cattle from ...

Although parasites of the genus Sarcocystis have likely cycled between bovine herbivores and canine carnivores for tens of millions of years, humans may have profoundly influenced the ecology and evolution of those prevalent in domesticated dogs and cattle. To preliminarily assess the possibility of such anthropogenic effects, we surveyed genetic variation in conserved (18S small subunit) and v...

Cattle are among the most important domesticated bovid species in world, of which Ethiopia possesses large populations adapted to different agro-ecologies and production systems. Though several molecular population genetic studies have been done on Ethiopian indigenous cattle, genomic diversity selection signatures pertinent adaptation local environments yet be comprehensively characterized. He...

The objective of the present study was to estimate the allele and genotype frequencies of the CSN3/HinfI and LGB/HaeIII gene polymorphisms in beef cattle belonging to different genetic groups, and to determine the effects of these polymorphisms on growth and carcass traits in these animals, which are submitted to an intensive production model. Genotyping was performed on 79 Nelore, 30 Canchim (...

SUMMARY. results bet\'.Ben tropical breeds and european beef breeds ~sbreed~~eed (mainly Zebu) genetic variability for some economically as W~~ is revie\'.Bd. Heterosis of between 9% to 11% has been reported t tra~ts owth rate, 2% to 11% for p09t\'.Ban~g and carcass traits as ~~g1~ for reproduction related tralts lD crosses lDvolvlDg 80s • ~ to t urus cattle. Maximum heterosis was observed in c...

For the whole 20th century, bovine tuberculosis (BTB) challenged the international community efforts to control this zoonotic disease. Asia and Africa accommodate the largest BTB-infected zebu cattle in the world. Similar to other few Asian nations, Iran has been actively running its BTB-control plan for the last four decades. BTB however, is still a number-one health concern for Iranian veteri...

The gastrointestinal tract (GIT) of animals harbor a variety of parasites particularly helminths, which causes clinical and sub-clinical parasitism. These parasites adversely affect the health status of animals and cause enormous economic losses to the livestock industry. The aim of this study was to determine the prevalence of helminths in cattle of Kirinyaga County. Epidemiological data was c...

Genotypic and phenotypic data of 1,562 animals were analyzed to find genomic regions that potentially influence the birth weight (BW), weaning weight at seven months of age (WW) and yearling weight (YW) of Colombian Brahman cattle, with genotyping conducted using Illumina Bead chip array with 74,669 SNPs. A Single Step Genomic BLUP (ssGBLP), approach was used to estimate the proportion of varia...

One thousand and ninety-four crossbred Zebu cattle were immunized against heartwater with a sheep-blood vaccine containing the Ball 3 strain of Cowdria ruminantium. Animals experiencing febrile reactions were treated at various stages of the reaction with tetracycline. Four hundred and sixty-two (42.2%) reacted, six (0.6%) of which died. Deaths were significantly less frequent in cattle treated...