Genetic variation and differentiation at 32 microsatellite loci was quantified for parent-descendant cattle populations and parent-descendant bison () populations. We compared heterozygosity () and allelic richness () for 587 cattle of four breeds and three lines derived from them, and 188 bison in three pairs of parent-descendant populations. and were less in the Line 1 Hereford inbred cattle ...

Knowledge of breed composition can be useful in multiple aspects of cattle production, and can be critical for analyzing the results of whole genome-wide association studies currently being conducted around the world. We examine the feasibility and accuracy of using genotype data from the most prevalent bovine genome-wide association studies platform, the Illumina BovineSNP50 array (Illumina In...

INTRODUCTION In any discussion of beef cattle production in a particular environment the matter of climatic adaptability is of prime consideration. Adaptation for beef cattle might be defined as the ability to reproduce, grow and thrive under local environmental conditions. Much has been written about the ability or inability of temperate zone breeds of cattle to adapt to hot, humid, subtropica...

INTRODUCTION Interest in crossbreeding in commercial cattle herds in the latter half of the 20 century sparked a flurry of experiments characterizing breeds and breed crosses for additive and nonadditive gene effects. Analytical models for estimation of these effects naturally followed. A logical extension was to apply the methodology to estimation of genetic merit from records in populations r...

The insulin-like growth factor I (IGF-1) gene plays important roles in the growth and body composition of animals. Serum IGF1 concentration has been associated with growth traits in many livestock species. We found a polymorphism of cattle IGF1-TasI locus and analyzed the distribution of alleles in three cattle breeds, including Qinchuan, Nanyang, and Chinese Holstein. PCR-RFLP analysis showed ...

INTRODUCTION Modern beef cattle used for our beef production are not exactly a property left by our ancestors, but composed products from native and imported cattle. Most native cattle were graded up by British and continental breeds for a few generations about 90 years ago. It should be pointed out, however, that they are the sole domestic farm animals in our country contributing to practical ...

The detrimental effects of heat stress on fertility in cattle are less pronounced in heat-tolerant breeds. Although these genetic differences reflect differences in thermoregulation, cells from heat-tolerant breeds are less adversely compromised by increased temperature (that is, heat shock) than cells from heat-sensitive breeds. Experiments were performed to test the hypothesis that cells and ...

The aim of this study was to assess the ability of electronic tongue system TS-5000Z to evaluate meat quality based on flavor assessment, recognition and correlation with the meat chemical composition. Meat was sampled from eighteen beef cattle including 6 Wagyu breed cattle, 6 Angus breed cattle and 6 Simmental breed cattle. Chemical composition including dry matter, crude protein, fat, ash, c...

A total of 560 cattle and water buffalo were examined at livestock markets in Bangladesh. The aim was to assess the frequency of nose and tail injuries that could have occurred during handling and transport. The frequency of nose piercing was 64%, and 69% of the cattle and 54% of the water buffalo had rubbing or tearing injuries at the nostrils from nose ropes fitted through the pierced hole. A...

Lipomatosis is described in a miniature Zebu, Bos primigenius indicus, bull that died of perianesthetic complications. This is the first pathologic description of lipomatosis that we are aware of in this species and breed of cattle. Infiltration of multiple visceral organs is described and depicted along with comparison to previously published cases of lipomatosis in other breeds of cattle.