Articles tagged with Cattle
Researchers found that exposure to a common growth-promoting hormone affects the sexual behaviors of fish, altering male reproductive behavior in guppy fish. This has significant implications for individual populations and species, with potential devastating long-term evolutionary and ecological impacts.
African cattle infected with the deadly East Coast fever parasite are less likely to die when co-infected with its milder cousin. The findings suggest a protective process that could also be at work in human malaria, where infections with milder parasites may protect against severe disease.
To make bovine TB vaccination viable, researchers recommend diagnostic tests must achieve high specificity to avoid increasing restrictions and financial burden. Achieving a specificity of greater than 99.85% is necessary to see benefits of vaccination.
A study published in Springer's Environmental Management journal found that removing grazing cattle from a wildlife refuge in Oregon has led to significant rehabilitation of the natural environment. The removal of cattle has resulted in an increase in woody riparian vegetation, reduction in erosion, and improved water quality.
Researchers at the University of Cambridge and Animal & Plant Health Agency highlight the importance of specificity in new diagnostic tests for bovine tuberculosis (bovine TB) vaccination. For vaccination to be economically viable, the number of false positives must be below 15 out of every 10,000 cattle tested.
Regular cattle testing could lead to TB eradication regardless of badger culling, study suggests. Cattle housed in large sheds over winter can double infected animals in a herd.
A study found that leafy greens can be contaminated with E. coli O157:H7 up to 180m away from a cattle feedlot, highlighting the need for revised buffer zone guidelines. The research suggests that airborne transport of bacteria can contribute to contamination, particularly in dry and dusty conditions.
A study by Queen Mary University of London and The University of Nottingham reveals that cows use distinct, individualized 'calls' to communicate with their calves, which change in frequency and pitch when separated. Researchers identified two maternal calls, one for close proximity and a louder call for separation.
In a paper published in Human Organization, UC Santa Barbara anthropologist Jeffrey Hoelle examines the rise of cattle ranching in the Brazilian state of Acre. He argues that cattle culture emerged as a result of local economic relationships, which developed cultural beliefs based on interdependence with animals.
A recent study by Point Blue Conservation Science found that changing grazing practices to give land more time to rest improved the health of native grasslands in California. This approach increased the growth of native perennial grasses, allowing water to better infiltrate soil and reducing erosion.
A new plant species, Dorstenia luamensis, is threatened by cattle ranches and forest destruction following a 50-kilometer mapping error. The reserve's borders were incorrectly placed on maps, putting the unique plant and its biodiversity, including chimpanzees, at risk.
A study published in the Journal of Animal Science found that wheat can be used as an alternative energy source for beef cattle, with optimal feeding levels determined to be above 50%, and increasing monensin supplementation improving feed efficiency, while proper grain processing is necessary.
Researchers found that using grocery byproduct as a supplemental feed source in total mixed rations improves dry matter intake and apparent digestibility, leading to increased animal performance. The study also developed a pricing method for the feed based on its nutrient content and market prices.
A study evaluating 2,238 Canadian beef calves found that trailer microclimate significantly impacts calf welfare during transport. Calves experienced more shrink in summer months and higher salivary cortisol levels in winter, but overall arrived healthy.
Scientists have created a global database that increases detailed knowledge of the cattle genome by several orders of magnitude. The database contains genomes of over 1,200 animals from various breeds, providing a comprehensive resource for studying cattle genetics and livestock history.
Researchers discovered that the bluetongue virus overwinters in female midges infected during previous season, allowing it to survive colder temperatures. The findings have significant implications for predicting and controlling the disease's spread.
Researchers have sequenced the whole genomes of 234 individual bulls, enabling trait-mapping for improved cattle breeding. The study identified mutations associated with negative impacts on animal health, welfare, and productivity, offering a leverage tool for breeders to extrapolate sequence information to numerous descendants.
A new national model for bovine tuberculosis (bTB) in Great Britain highlights the need for improved testing, vaccination of cattle, and culling infected farms as effective strategies. The majority of herd outbreaks are caused by multiple transmission routes, including failed tests, cattle movement, and environmental reservoirs.
Mathematicians develop models to describe cell migration and tumor invasion, as well as dispersal patterns in species. The studies reveal the existence and uniqueness of traveling waves in malignant tumor invasion and show how fitness-dependent dispersal conveys advantages towards ideal free distribution in populations.
Scientists identified a gene regulatory switch in cattle embryos that led to the reduction of toes and transformation into cloven hooves. The discovery provides insights into the molecular history of evolution in even-toed ungulates, shedding light on their unique adaptations.
A team of researchers from Kansas State University has created a new molecular assay to detect and quantify major genes specific for E. coli O157 in cattle feces. This test can be used in diagnostic or research laboratories to accurately detect E. coli and help with quality control in cattle facilities.
The cattle egret's colonization of Brazil offers insights into non-native species dispersal and adaptation. The bird's ability to establish itself in the Americas without human introduction highlights its adaptability and potential ecological impacts.
A new study suggests that encouraging the intensification of Brazil's cattle production or taxing conventional pastures could deliver a substantial cut in global greenhouse gas emissions. By reducing deforestation, Brazil may be able to spare up to 80% of recently deforested land.
A new study finds that supporting sustainable cattle ranching practices in Brazil could significantly reduce deforestation and greenhouse gas emissions. By subsidizing productive land use and taxing unsustainable practices, Brazil could halve its deforestation rate and shave off 25% of global emissions.
A team of University of Missouri researchers completed the genetic history of 134 cattle breeds worldwide, revealing that ancient domesticated African cattle originated in the Fertile Crescent region. This finding proves that cattle were brought to Africa as farmers migrated south and interbred with wild aurochs.
A team of researchers found that ancient domesticated African cattle originated in the Fertile Crescent region nearly 10,000 years ago. The genetic history of 134 cattle breeds worldwide reveals mixing and admixture between native and imported breeds.
Researchers have discovered genetic signatures associated with bovine tuberculosis (TB) resistance in unaffected cows, providing a potential breakthrough in improving disease control through selective breeding. The study sheds light on the possibility of using genetic information to develop more resilient cattle.
A recent study by University of Montana faculty and graduate students found that wolf predation contributes to lower weight gain in calves on western Montana ranches. The study quantifies the economic impact of weight loss after a confirmed wolf kill, finding a $6,679 loss at sale for an affected ranch.
A genetic mutation affecting fertility and milk yield in dairy cattle has been discovered by scientists. The deletion has a positive effect on milk production but causes embryo mortality, explaining the negative correlation between fertility and milk yield.
Research reveals morphological and genetic evidence for cattle management in north-eastern China around 10,000 years ago. The discovery of an ancient cattle jaw with unique wear patterns and genetic signatures suggests that humans may have started domesticating cows in more regions than previously believed.
Researchers have identified the genetic basis for resistance to amitraz in cattle ticks, which can cause devastating diseases. The discovery paves the way for a new genetic test that will help farmers make informed management decisions.
Researchers discovered that the Baoulé breed of cattle has a natural tolerance to a deadly parasite, and developed a method to detect different types of trypanosomes. The study aims to preserve the genetic background of the Baoulé breed to develop more resilient cattle breeds.
A new study by the University of Iowa found that anabolic steroid trenbolone acetate and two other drugs can partially regenerate themselves in the environment, potentially prolonging their impact on aquatic life. The research suggests that these compounds may persist longer than expected, making it harder to assess environmental risks.
A two-year experiment at Clemson University found that steers grazing on various forages showed significant differences in growth, carcass quality, and meat taste. Finishing on legumes like alfalfa and cowpea increased carcass quality, while bermuda grass and pearl millet improved healthy fatty acid levels.
Scientists found that vaccinating cattle against E. coli O157 could reduce human cases of infection by nearly 85%, a significant improvement over previous estimates. The researchers used veterinary, human, and molecular data to estimate the impact of vaccinating cattle and predict that it would have a major public health benefit.
Researchers sequenced 147 Mycobacterium bovis genomes to track bovine TB outbreaks, revealing local transmission mechanisms drive the spread of the disease. The study provides unprecedented insight into how the disease spreads and will inform control methods.
Researchers found that beetles living in cow pats can reduce methane emissions from cattle farming. This discovery has significant implications for the climate impact of dairy and beef farming. The study suggests that if beetles can keep methane emissions down, it could lead to a smaller global warming effect.
A new study found that a type of MRSA originated in cattle at least 40 years ago, with genetic evidence tracing two subtypes back to farm animals. Researchers suggest direct contact between people and livestock may have transmitted the bacteria.
A recent study has identified 1,274 genes in the Y chromosome of cattle, a significant increase compared to other primates. This discovery may help biologists better understand how cattle and other mammals evolved and improve fertility in the dairy and beef industry.
Researchers used biotechnologies to increase food production while lowering harmful gas emissions from cattle. The study found that biotechnology treatments improved milk production and reduced greenhouse gas emissions.
A comprehensive study published in PLOS ONE found that recreation sites had the lowest levels of fecal indicator bacteria, and no significant differences were detected between grazing lands and areas without recreation or grazing. The research suggests that livestock production and environmental goals can be compatible, challenging com...
A recent study published in PLOS ONE found that climate change is likely to reduce the nutritional quality of grasses, causing bison to grow more slowly and weigh less. This could have significant economic implications for cattle producers, with a potential loss of $1 billion in income due to reduced weight gains.
A new study suggests that overgrazing and other factors increase the severity of cheatgrass invasion in sagebrush steppe ecosystems. Researchers propose minimizing cumulative impact of grazing through better management to promote a diverse ecosystem and conserve native plant and wildlife species.
A comprehensive study by University of Calgary ecologists finds that human activity is deliberately or inadvertently engineering ecosystems, influencing food chains in protected areas and beyond. The results challenge traditional understanding of ecosystem regulation, highlighting the critical role of humans in shaping natural systems.
Conservation efforts by the Chilean government and researchers from Cambridge have allowed Huemul deer to return to natural habitats in Bernardo O'Higgins National Park. The population has stabilized and begun to increase after controlling cattle farming and poaching, providing a model for future biodiversity conservation.
A study by University of Texas at Austin researchers reveals that Texas Longhorns are direct descendants of cattle brought over by Columbus in 1493, with an 85% taurine genome from the Middle East. The breed's genetic diversity is partially responsible for their resilience to harsh climatic conditions.
Researchers found that cattle temperament affects how animals respond to stressors like weaning, transportation, and vaccination. Temperamental cattle have reduced fat stores and lower marbling, impacting the final quality grade of beef.
Researchers identified diverse microbial communities in cattle manure, with some bacteria present in beef cattle not found in dairy cows. Diet and tillage management also affected pathogen transport in field runoff, highlighting the importance of soil management for food safety.
A study by UCSB anthropologist Jeffrey Hoelle explores the complex relationship between cattle ranchers and deforestation in the Brazilian Amazon. Ranchers, who are often seen as villains of Amazonia, actually have a nuanced perspective on their industry's impact.
A new study tracks vulture movements, revealing they often avoid national parks to scavenge on private farmland, risking exposure to poisonous veterinary drugs. This behavior poses a significant threat to the endangered white-backed vulture species in Africa and India.
A study of white-backed vulture movements across southern Africa reveals they prefer to forage on private farmland, risking exposure to poisonous veterinary drugs. The birds travel long distances to find food, with some individuals crossing multiple country borders in search of sustenance.
Stable flies are a significant pest of cattle in the US, causing reduced milk production and decreased weight gain. A new study finds that cyromazine, an insect growth regulator, can reduce emerging adult stable flies by 97% with minimal cost and application time.
Researchers track TB transmission between cattle and badgers using whole genome DNA sequencing and mathematical modeling. The study reveals a close relationship between the two species' bacterial types, highlighting the potential for next-generation sequencing to inform disease control policies.
A recent study reveals that historical cross-breeding of bison with domestic cattle has left a lasting genetic legacy in modern bison herds. The research, published in Conservation Biology, found that bison with a particular domestic cattle genetic trait were consistently smaller and lighter than those with true bison mitochondrial DNA.
A new line of defense against E. coli O157:H7 has been discovered through a Kansas State University study. The commercial cattle vaccine significantly reduced E. coli shedding in feces by more than 50%, making it an effective tool for improving food safety.
Researchers at Purdue University found that early weaning can help maintain gains and improve meat quality when fed distillers dried grains with solubles (DDGS). Cattle fed DDGS diets showed a 2.5% decrease in carcass weight but maintained average daily gain and intake.
A new diagnostic tool has been found to significantly improve clinical practice among veterinary and animal health officers in Uganda. The tool, a low-cost decision support card, was introduced to 15 clinical participants and led to an increase in the number of clinical signs recorded, suggesting improved examination skills.
A University of Illinois researcher is testing a new model for conservation that involves raising awareness among private landowners about invasive species and providing strategies for moderate livestock grazing and controlled burns. The goal is to promote the growth of native wildlife habitats in the Grand River Grasslands, which has ...
Researchers reveal evidence of dairy farming in prehistoric Saharan Africa around 7,000 years ago, based on fatty acid analysis of ancient pottery. This finding confirms the early presence of domesticated cattle and milk in the region.
A study of over 3,000 dairy herds in England and Wales found that liver fluke infection reduces the sensitivity of skin tests used to diagnose bovine TB. This means infected cattle may not be identified by current surveillance schemes, contributing to the disease's spread.