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Articles 631 - 660 of 1855

Full-Text Articles in Animal Studies

Effect Of Pen Size, Group Size, And Stocking Density On Activity In Freestall-Housed Dairy Cows, E. Telezhenko, Marina A.G. Von Keyserlingk, A. Talebi, Daniel M. Weary Jun 2012

Effect Of Pen Size, Group Size, And Stocking Density On Activity In Freestall-Housed Dairy Cows, E. Telezhenko, Marina A.G. Von Keyserlingk, A. Talebi, Daniel M. Weary

Housing and Confinement of Farm Animals Collection

The purpose was to determine the effects of the physical dimensions of the pen and group size and stocking density on cow activity. Cows (randomly assigned to 4 groups of 6 animals each) were tested in pens with 24 or 12 lying places and in groups with 12 or 6 cows. All groups were tested in each of the 4 treatments with treatment order allocated using a 4 × 4 Latin square. The distance moved and the number of movements were calculated using 5-min scan sampling of video recordings over a 48-h period. Time spent lying down, number of lying …

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Do Pets Go To Heaven?, Harold Herzog May 2012

Do Pets Go To Heaven?, Harold Herzog

'Animals and Us' Blog Posts

If all dogs go to Heaven, what about their fleas?

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Puppies And Broken Hearts, Harold Herzog May 2012

Puppies And Broken Hearts, Harold Herzog

'Animals and Us' Blog Posts

What science says about the healing power of pets.

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Plasticity Of Boldness In Rainbow Trout, Oncorhynchus Mykiss: Do Hunger And Predation Influence Risk-Taking Behaviour?, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon May 2012

Plasticity Of Boldness In Rainbow Trout, Oncorhynchus Mykiss: Do Hunger And Predation Influence Risk-Taking Behaviour?, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon

Ethology Collection

Boldness, a measure of an individual's propensity for taking risks, is an important determinant of fitness but is not necessarily a fixed trait. Dependent upon an individual's state, and given certain contexts or challenges, individuals may be able to alter their inclination to be bold or shy in response. Furthermore, the degree to which individuals can modulate their behaviour has been linked with physiological responses to stress. Here we attempted to determine whether bold and shy rainbow trout, Oncorhynchus mykiss, can exhibit behavioural plasticity in response to changes in state (nutritional availability) and context (predation threat). Individual trout were initially …

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Blood Cortisol Concentrations Predict Boldness In Juvenile Mulloway (Argyosomus Japonicus), Vincent Raoult, Culum Brown, Amina Zuberi, Jane E. Williamson May 2012

Blood Cortisol Concentrations Predict Boldness In Juvenile Mulloway (Argyosomus Japonicus), Vincent Raoult, Culum Brown, Amina Zuberi, Jane E. Williamson

Sentience Collection

There is a growing interest in animal personality because individual variation is the substrate of the evolutionary process. Despite revelations that personality traits affect key fitness variables, little is known about the proximate mechanisms generating consistent behavioural differences between individuals. Boldness, the propensity to take risks, is one of the most widely studied aspects of personality in fishes. We assessed the position of juvenile Argyosomus japonicus on the ‘‘boldness–shyness’’ continuum by repeatedly recording the time taken to exit a refuge and explore a novel environment. Stress-related hormone concentrations after exposure to a mild stressor were analysed 1 month before behavioural …

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Attitudes Of Canadian Beef Producers Toward Animal Welfare, J. M. Spooner, C. A. Schuppli, D. Fraser May 2012

Attitudes Of Canadian Beef Producers Toward Animal Welfare, J. M. Spooner, C. A. Schuppli, D. Fraser

Farm Animal Welfare Collection

Commercial beef production in western Canada involves raising cows and calves on large tracts of grassland, plus grain-based ‘finishing’ of animals in outdoor feedlots. This study used open-ended, semi-structured interviews to explore views on animal welfare of 23 commercial beef producers in this system. Although wary of the term ‘animal welfare’, participants understood the concept to encompass three well-known elements: (i) basic animal health and body condition; (ii) affective states (comfort, contentment, freedom from hunger or thirst); and (iii) the ability to live a ‘natural’ life. Participants attached importance to protecting animals from natural hardships (extreme weather, predators), yet many …

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In Defense Of (Some) Meat, Harold Herzog Apr 2012

In Defense Of (Some) Meat, Harold Herzog

'Animals and Us' Blog Posts

My contribution to the New York Times "defense of meat-eating" contest.

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An Hsus Report: Food Safety Risks Associated With U.S. Horse Slaughter, The Humane Society Of The United States Apr 2012

An Hsus Report: Food Safety Risks Associated With U.S. Horse Slaughter, The Humane Society Of The United States

Impact of Animal Agriculture

Meat originating from U.S. horses may contain residues from substances banned by the U.S. Food and Drug Administration and the European Union for use in animals intended for consumption. Phenylbutazone, for example, is commonly administered to U.S. horses and has been associated with life-threatening reactions in humans. Requiring a thorough drug history for each U.S. horse intended for human consumption may help circumvent human health risks.

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Social Effects On Vocal Ontogeny In An Ungulate, The Goat, Capra Hircus, Elodie F. Briefer, Alan G. Mcelligott Apr 2012

Social Effects On Vocal Ontogeny In An Ungulate, The Goat, Capra Hircus, Elodie F. Briefer, Alan G. Mcelligott

Sentience Collection

Vocal plasticity is the ability of an individual to modify its vocalizations according to its environment. Humans benefit from an extreme form of vocal plasticity, allowing us to produce a wide range of sounds. This capacity to modify sounds has been shown in three bird orders and in a few nonhuman mammal species, all characterized by complex vocal communication systems. In other mammals, there is no evidence for a social impact on vocal development. We investigated whether contact calls were affected by social environment and kinship during early ontogeny in goats, a highly vocal and social species. To test the …

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Using Grizzly Bears To Assess Harvest-Ecosystem Tradeoffs In Salmon Fisheries, Taal Levi, Chris T. Darimont, Misty Macduffee, Marc Mangel, Paul C. Paquet, Christopher C. Wilmers Apr 2012

Using Grizzly Bears To Assess Harvest-Ecosystem Tradeoffs In Salmon Fisheries, Taal Levi, Chris T. Darimont, Misty Macduffee, Marc Mangel, Paul C. Paquet, Christopher C. Wilmers

Aquaculture and Fisheries Collection

Implementation of ecosystem-based fisheries management (EBFM) requires a clear conceptual and quantitative framework for assessing how different harvest options can modify benefits to ecosystem and human beneficiaries. We address this social-ecological need for Pacific salmon fisheries, which are economically valuable but intercept much of the annual pulse of nutrient subsidies that salmon provide to terrestrial and aquatic food webs. We used grizzly bears, vectors of salmon nutrients and animals with densities strongly coupled to salmon abundance, as surrogates for ‘‘salmon ecosystem’’ function. Combining salmon biomass and stock-recruitment data with stable isotope analysis, we assess potential tradeoffs between fishery yields and …

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The Effect Of Neutering On The Risk Of Urinary Incontinence In Bitches – A Systematic Review, W. Beauvais, J. M. Cardwell, D. C. Brodbelt Apr 2012

The Effect Of Neutering On The Risk Of Urinary Incontinence In Bitches – A Systematic Review, W. Beauvais, J. M. Cardwell, D. C. Brodbelt

Endocrinology Collection

An increased risk of urinary incontinence in bitches has often been associated with previous ovariohysterectomy but remains controversial. The objective of this study was to evaluate the strength of evidence for an association between neutering or age at neutering and urinary incontinence in bitches and to estimate the magnitude of any effect found. A systematic review of peer‐reviewed original English analytic journal articles was conducted, based on Cochrane guidelines (Higgins and Green 2009) Of 1,853 records screened, seven studies were identified that examined the effect of neutering or age at neutering on the risk of urinary incontinence but …

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Food Safety Risks Associated With U.S. Horse Slaughter Apr 2012

Food Safety Risks Associated With U.S. Horse Slaughter

Agribusiness Reports

Meat originating from U.S. horses may contain residues from substances banned by the U.S. Food and Drug Administration and the European Union for use in animals intended for consumption. Phenylbutazone, for example, is commonly administered to U.S. horses and has been associated with life-threatening reactions in humans. Requiring a thorough drug history for each U.S. horse intended for human consumption may help circumvent human health risks.

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A Blood Sport For The Rich And Famous?, Harold Herzog Mar 2012

A Blood Sport For The Rich And Famous?, Harold Herzog

Competitive Animal Racing Collection

A new report finds horse racing carnage is getting worse.

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Whip Use By Jockeys In A Sample Of Australian Thoroughbred Races—An Observational Study, Paul D. Mcgreevy, Robert A. Corken, Hannah Salvin, Celeste M. Black Mar 2012

Whip Use By Jockeys In A Sample Of Australian Thoroughbred Races—An Observational Study, Paul D. Mcgreevy, Robert A. Corken, Hannah Salvin, Celeste M. Black

Competitive Animal Racing Collection

The use of whips by jockeys is an issue. The current study viewed opportunistic high-speed footage of 15 race finishes frame-by-frame to examine the outcomes of arm and wrist actions (n = 350) on 40 horses viewed from the left of the field. Any actions fully or partially obscured by infrastructure or other horses were removed from the database, leaving a total of 104 non-contact sweeps and 134 strikes. For all instances of arm actions that resulted in fully visible whip strikes behind the saddle (n = 109), the outcomes noted were area struck, percentage of unpadded section making contact, …

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Horse Racing: Cruelties We Condone And Cruelties We Condemn, Harold Herzog Mar 2012

Horse Racing: Cruelties We Condone And Cruelties We Condemn, Harold Herzog

Competitive Animal Racing Collection

Why the deaths of HBO's "Luck" horses were predictable.

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Chimpanzee Personhood: Supporting Scientific Documentation, Jonathan Balcombe Mar 2012

Chimpanzee Personhood: Supporting Scientific Documentation, Jonathan Balcombe

Sentience Collection

The aim of this document is to provide scientific support for granting chimpanzees and bonobos the legal status of persons. The studies summarized here have been selected because they show these species to have levels of awareness, cognition, emotionality and virtue that rivals that of their hominid cousins, Homo sapiens. Chimps, like other great apes, have long-term relationships, grieve the loss of a loved-one, can solve complex puzzles, display a sense of justice, and can learn hundreds of signs and put them together in logical sentences.

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Tool Use In Fishes, Culum Brown Mar 2012

Tool Use In Fishes, Culum Brown

Sentience Collection

Tool use was once considered the sole domain of humans. Over the last 40 years, however, it has become apparent that tool use may be widespread across the animal kingdom. Pioneering studies in primates have shaped the way we think about tool use in animals, but have also lead to a bias both in terms of our expectations about which animals should be capable of using tools and the working definition of tool use. Here I briefly examine tool use in terrestrial animals and consider the constraints of the current working definition of tool use in fishes. Fishes lack grasping …

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The Ban On The Use Of Chimpanzees In Biomedical Research And Testing In The Uk Should Be Made Permanent And Legally Binding, Michelle Thew, Jarrod Bailey, Michael Balls, Michelle Hudson Mar 2012

The Ban On The Use Of Chimpanzees In Biomedical Research And Testing In The Uk Should Be Made Permanent And Legally Binding, Michelle Thew, Jarrod Bailey, Michael Balls, Michelle Hudson

Laboratory Experiments Collection

The Coalition Government is currently considering how to transpose Directive 2010/63/EU on animal experimentation into UK law. The Directive bans the use of Great Apes in laboratories, but EU Member States can seek (now or, more likely, at some time in the future) a derogation from the Commission to permit such use, where this is considered essential for the preservation of the species in question or in relation to an unexpected outbreak of a life-threatening or debilitating clinical condition in human beings. Currently, the policy of the Government is not to approve any experiments on Great Apes, but it is …

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The Welfare Of Animals In The Foie Gras Industry Mar 2012

The Welfare Of Animals In The Foie Gras Industry

Agribusiness Reports

The production of pâté de foie gras involves force-feeding ducks and geese by placing a long tube down the birds’ esophagi and pumping an unnatural quantity of food directly into their stomachs. Force-feeding induces hepatic lipidosis and causes the birds’ livers to become diseased and enlarged. Substantial scientific evidence suggests that force-feeding can cause pain and injury from feeding tube insertion, fear and stress during capture and handling, gait abnormality due to distended livers, pathologies in liver function, and increased mortality. Force-feeding birds to produce foie gras is detrimental to their welfare.

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Isotopic Niche Differentiation Among Mammals From A Rainforest In Peninsular Malaysia, Kae Kawanishi, Song Horng Neo Liang, Chris T. Darimont, Thomas E. Reimchen, Melvin E. Sunquist Feb 2012

Isotopic Niche Differentiation Among Mammals From A Rainforest In Peninsular Malaysia, Kae Kawanishi, Song Horng Neo Liang, Chris T. Darimont, Thomas E. Reimchen, Melvin E. Sunquist

Biochemistry Collection

We performed stable isotope analysis on eight mammalian species: pig-tailed macaque (Macaca nemestrina), long-tailed macaque (M. fascicularis), dusky leaf monkey (Trachypithecus obscurus), brush-tailed porcupine (Atherurus macrourus), wild boar (Sus scrofa), lesser mouse-deer (Tragulus javanicus), greater mouse-deer (T. napu), and barking deer (Muntiacus muntjac), to test the hypothesis that the differences in diet and habitat types among species, guilds and foraging strategies are reflected in the δ15N and δ13C signatures of their tissues. Whereas the isotopic ratios differed among taxa, the four major isotopic groups observed were: mouse-deer species, primate species, brush-tailed porcupine, and wild boar. The …

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Bias During The Evaluation Of Animal Studies, Andrew Knight Feb 2012

Bias During The Evaluation Of Animal Studies, Andrew Knight

Morality and Ethics of Animal Experimentation Collection

My recent book entitled The Costs and Benefits of Animal Experiments seeks to answer a key question within animal ethics, namely: is animal experimentation ethically justifiable? Or, more precisely, is it justifiable within the utilitarian cost:benefit framework that fundamentally underpins most regulations governing animal experimentation? To answer this question I reviewed more than 500 scientific publications describing animal studies, animal welfare impacts, and alternative research, toxicity testing and educational methodologies. To minimise bias I focused primarily on large-scale systematic reviews that had examined the human clinical and toxicological utility of animal studies. Despite this, Dr. Susanne Prankel recently reviewed my …

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Whaling: Don’T Trade The Moratorium Away, Mark Peter Simmonds, Sue Fisher Feb 2012

Whaling: Don’T Trade The Moratorium Away, Mark Peter Simmonds, Sue Fisher

Conservation Collection

In their proposal to allocate ‘whale shares’ to both whalers and conservationists as an alternative to the International Whaling Commission (IWC) moratorium on commercial whaling, Christopher Costello and colleagues overlook several factors (Nature 481, 139–140; 2012).

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Complex Patterns Of Male Alliance Formation In A Dolphin Social Network, Joanna Wiszniewski, Culum Brown, Luciana M. Möller Feb 2012

Complex Patterns Of Male Alliance Formation In A Dolphin Social Network, Joanna Wiszniewski, Culum Brown, Luciana M. Möller

Sentience Collection

The formation and maintenance of alliances is regarded as one of the most socially complex male mating strategies in mammals. The prevalence and complexity of these cooperative relationships, however, varies considerably among species as well as within and between populations living in different ecological and social environments. We assessed patterns of alliance formation for Indo-Pacific bottlenose dolphins, Tursiops aduncus, in Port Stephens, New South Wales, Australia, to investigate the stability of these alliances, the structure of associations, as well as variation in schooling patterns among males. Our results showed that association patterns among males within this population showed considerable variability. …

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Superglue Is Not Super: An Assessment Of Superglue For Suturing Tag Incisions In A Cultured Marine Fish, Vincent Raoult, Culum Brown, Jane E. Williamson Feb 2012

Superglue Is Not Super: An Assessment Of Superglue For Suturing Tag Incisions In A Cultured Marine Fish, Vincent Raoult, Culum Brown, Jane E. Williamson

Aquaculture Collection

No abstract provided.

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Natural Healers: The Four Pillars Of Medicine And How Animals Use Them, Harold Herzog Feb 2012

Natural Healers: The Four Pillars Of Medicine And How Animals Use Them, Harold Herzog

'Animals and Us' Blog Posts

Is meat-eating the reason pet-owners get sicker than their dogs?

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Animals On The Borderline: The Horse Slaughter Controversy, Harold Herzog, Jenny Vermilya Jan 2012

Animals On The Borderline: The Horse Slaughter Controversy, Harold Herzog, Jenny Vermilya

Slaughter and Slaughtering Practices Collection

Are horses pets, products, or both?

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Your Worst Animal Nightmare, Harold Herzog Jan 2012

Your Worst Animal Nightmare, Harold Herzog

'Animals and Us' Blog Posts

Monster snakes are headed your way...

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An Hsi Report: Industrial Farm Animal Production And Livestock Associated Mrsa (Methicillin Resistant Staphylococcus Aureus), Humane Society International Jan 2012

An Hsi Report: Industrial Farm Animal Production And Livestock Associated Mrsa (Methicillin Resistant Staphylococcus Aureus), Humane Society International

HSI REPORTS

Staphylococcus aureus is a leading cause of bacterial infection and is increasingly found to be resistant to antibiotic therapy. A newly described type of Methicillin Resistant Staphylococcus aureus carried by farm animals, Livestock Associated MRSA (LA-MRSA), is now causing infections in humans with and without direct livestock contact. A reduction in the non-therapeutic use of antibiotics in feed would likely reduce the capacity of industrial animal agriculture to continue to create, disseminate, and perpetuate a large reservoir of LA-MRSA on a global scale, but more fundamental changes in the way animals are raised for food may be necessary forestall a …

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Puppy Buyer Complaints: A Five-Year Summary, 2007‐2011, The Humane Society Of The United States Jan 2012

Puppy Buyer Complaints: A Five-Year Summary, 2007‐2011, The Humane Society Of The United States

PUPPY MILL REPORTS

The Humane Society of the United States receives complaints about sick puppies on a daily basis. Over a five-year period (2007-2011), our puppy mills campaign received 2,479 puppy buyer complaints. The complaint came to The HSUS via our website complaint form (www.humanesociety.org/puppycomplaint), by email, and through our puppy mills tip line. Buyers complained about sick puppies sold by a variety of sources, including pet stores, breeders (both in person and online), or middleman dealers (sometimes known as brokers). Unsatisfied buyers contact The HSUS for many reasons; some are seeking information about how to pursue their consumer complaint, others …

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The Problem Of Unlicensed Puppy Mills, The Humane Society Of The United States Jan 2012

The Problem Of Unlicensed Puppy Mills, The Humane Society Of The United States

PUPPY MILL REPORTS

Currently the United States Department of Agriculture does not license or inspect large-scale puppy producers who sell puppies over the Internet or directly to the public. Many of these unlicensed facilities sell puppies sight-unseen to unsuspecting buyers who assume they are purchasing from a small family breeder. Hundreds of these “direct” sellers have taken advantage of the pre-Internet language of the Animal Welfare Act (AWA) regulations (otherwise known as the “retail pet stores loophole”) to operate without any federal oversight or inspections. As a result, an increasing number of large-scale unlicensed breeders are not monitored for their animals’ overall health …

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