نتایج جستجو برای: carrier cattle
تعداد نتایج: 121750 فیلتر نتایج به سال:
Complex vertebral malformation (CVM) is a recently described monogenic autosomal recessive hereditary defect of Holstein dairy cattle that causes premature birth, aborted fetuses and stillborn calves. Guanine is substituted by thymine (G>T) in the solute carrier family 35 member A3 gene (SLC35A3). A valine is changed to a phenylalanine at position 180 of uridine 5'-diphosphate-N-acetyl-glu...
Escherichia coli O157:H7 causes Shiga toxin (Stx)-mediated vascular damage, resulting in hemorrhagic colitis and the hemolytic uremic syndrome in humans. These infections are often foodborne, and healthy carrier cattle are a major reservoir of E. coli O157:H7. We were interested in knowing why cattle are tolerant to infection with E. coli O157:H7. Cattle tissues were examined for the Stx recept...
Chromosomal anomalies, like Robertsonian and reciprocal translocations, represent a big problem in cattle breeding as their presence induces, in the carrier subjects, a well-documented fertility reduction. In cattle, reciprocal translocations (RCPs, a chromosome abnormality caused by an exchange of material between non-homologous chromosomes) are considered rare as to date only 19 reciprocal tr...
BACKGROUND In 2006, an atypical U.S. case of bovine spongiform encephalopathy (BSE) was discovered in Alabama and later reported to be polymorphic for glutamate (E) and lysine (K) codons at position 211 in the bovine prion protein gene (Prnp) coding sequence. A bovine E211K mutation is important because it is analogous to the most common pathogenic mutation in humans (E200K) which causes heredi...
AIM This study was conducted to determine the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in cattle and buffalo and to study their antibiotic resistance pattern. MATERIALS AND METHODS A total of 136 samples (skin and nasal swab) from cattle and buffalo were collected. MRSA was identified by conventional bacterial culture techniques which were further confirmed by amplific...
To evaluate the serological findings of cattle Leptospirosis which is a zoonotic disease with worldwide distribution caused byLeptospirainterrogans. It is usually mild and often subclinical in cattle but it may lead to higher incidence of abortion, stillbirth, infertility, mastitis, weak progeny and decreased milk production in cattle. 676 cattle serum samples were collected during 2008-2011 an...
Premix feed is a mixture containing one or more additives and diluent carrier after mixed evenly, which plays an important role in cattle feeding. In this paper, the characteristics functions of premix feeds were analyzed, effects adding fat, vitamins, microelements other mixtures daily on reproductive performance different postpartum diseases expounded.
The regular decrease of female fertility over time is a major concern in modern dairy cattle industry. Only half of this decrease is explained by indirect response to selection on milk production, suggesting the existence of other factors such as embryonic lethal genetic defects. Genomic regions harboring recessive deleterious mutations were detected in three dairy cattle breeds by identifying ...
beta-Mannosidosis is a lethal lysosomal storage disease inherited as an autosomal recessive in man, cattle and goats. Laboratory assay data of plasma beta-mannosidase activity represent a mixture of homozygous normal and carrier genotype distributions in a proportion determined by genotype frequency. A maximum likelihood approach employing data transformations for each genotype distribution and...
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