Animal Studies Commons^™

Preference And Usage Of Pasture Versus Free-Stall Housing By Lactating Dairy Cattle, A. L. Legrand, M. A. G. Von Keyserlingk, D. M. Weary

Housing and Confinement of Farm Animals Collection

The aim of the current study was to assess if cows preferred pasture or indoor housing, and how diurnal and environmental factors affected this preference. Lactating dairy cows (n = 5 groups, each containing 5 cows) were sequentially housed either in a free-stall barn on pasture, or given the choice between the 2 environments. Each group was tested 3 times under each condition, for a total of 21 d, to assess the effects of varying climatic conditions (outdoor temperature ranged from 9.9 to 28.2°C and daily rainfall from 0 to 65 mm/d over the course of the experiment). When provided …

Preference For Pasture Versus Freestall Housing By Dairy Cattle When Stall Availability Indoors Is Reduced, A. C. Falk, D. M. Weary, C. Winckler, M. A. G. Von Keyserlingk

Housing and Confinement of Farm Animals Collection

Providing cattle with access to pasture has been shown to yield benefits, including access to more space, fewer agonistic interactions, better air quality, and the ability to perform a greater range of normal behaviors. Preference for pasture appears to depend on several parameters, including weather conditions and availability of shade. The primary aim of this study was to evaluate the preference for pasture versus inside a freestall barn with variable stocking densities at the stalls. We also investigated the effect of temperature-humidity index (THI) and precipitation on this preference. Overall, cows spent on average 13.7 ± 2.6 h/d (mean ± …

Preference And Usage Of Pasture Versus Free-Stall Housing By Lactating Dairy Cattle, A. L. Legrand, M. A. G. Von Keyserlingk, D. M. Weary

Housing and Confinement of Farm Animals Collection

The aim of the current study was to assess if cows preferred pasture or indoor housing, and how diurnal and environmental factors affected this preference. Lactating dairy cows (n = 5 groups, each containing 5 cows) were sequentially housed either in a free-stall barn on pasture, or given the choice between the 2 environments. Each group was tested 3 times under each condition, for a total of 21 d, to assess the effects of varying climatic conditions (outdoor temperature ranged from 9.9 to 28.2°C and daily rainfall from 0 to 65 mm/d over the course of the experiment). When provided …

The Stall-Design Paradox: Neck Rails Increase Lameness But Improve Udder And Stall Hygiene, F. Bernardi, J. A. Fregonesi, C. Winckler, D. M. Veira, M. A. G. Von Keyserlingk, D. M. Weary

Housing and Confinement of Farm Animals Collection

Housing conditions for dairy cows are thought to af-fect lameness, but almost no experimental work has addressed this link. The aim was to assess the effect of one feature of free-stall design, the position of the neck rail, testing the prediction that cows will be more likely to become lame if using pens with the neck rail positioned such that it prevents standing fully inside the stall. Cows (n = 32) were housed in 8 pens. Treat-ments were tested using a crossover design; treatments were allocated alternately to pens at the beginning of the experiment and switched halfway through the …

Cow Comfort In Tie-Stalls: Increased Depth Of Shavings Or Straw Bedding Increases Lying Time, C. B. Tucker, D. M. Weary, M. A. G. Von Keyserlingk, K. A. Beauchemin

Housing and Confinement of Farm Animals Collection

Over half of US dairy operations use tie-stalls, but these farming systems have received relatively little research attention in terms of stall design and management. The current study tested the effects of the amount of 2 bedding materials, straw and shavings, on dairy cattle lying behavior. The effects of 4 levels of shavings, 3, 9, 15, and 24 kg/stall (experiment 1, n = 12), and high and low levels of straw in 2 separate experiments: 1, 3, 5, and 7 kg/stall (experiment 2, n = 12) and 0.5, 1, 2, and 3 kg/stall (experiment 3, n = 12) were …

Assessing Lameness In Cows Kept In Tie-Stalls, K. A. Leach, S. Dippel, J. Huber, S. March, C. Winckler, H. R. Whay

Housing and Confinement of Farm Animals Collection

Identifying lame cows and quantifying the prevalence of lameness are important elements of cattle welfare assessment that are generally achieved by methods involving observations of each animal walking. There is no published method for assessing lameness in cows confined in tie-stalls. The objective of this study (carried out within the European Commission’s Welfare Quality® project) was to develop a suitable method and validate it for lameness detection against a published locomotion score. A series of indicators of lameness visible in tied cows was formalized into a stall assessment protocol. This was validated against a traditional locomotion score and tested for …

Relationship Between Pre-Slaughter Stress Responsiveness And Beef Quality In Three Cattle Breeds, V. Muchenje, K. Dzama, M. Chimonyo, P. E. Strydom, J. G. Raats

Slaughter and Slaughtering Practices Collection

The relationship between stress responsiveness and beef quality of 40 Nguni, 30 Bonsmara and 30 Angus steers was determined. The L* values, pHu, cooking loss (CL) and Warner-Bratzler shear force (WBSF) were determined. Catecholamine levels were determined from urine samples collected at slaughter. Bonsmara steers had the highest (P < 0.05) levels of catecholamines with respective epinephrine, norepinephrine and dopamine concentrations of 10.8, 9.7 and 14.8 nmol/mmol. Nguni steers had the lowest (P < 0.05) levels of catecholamines, with respective catecholamine concentrations of 5.1, 4.3 and 4.0 nmol/mmol. In the Nguni steers, there were significant (P < 0.05) correlations between catecholamines and L* and between dopamine and tenderness in meat aged for two days (WBSF2). In the Bonsmara, dopamine was correlated (P < 0.05) pHu, WBSF2 and CL. No significant correlations were found in the Angus. Therefore the relationship between stress responsiveness and certain beef quality traits may not be similar in different breeds.

Effect Of Restricted Access Time To Pasture On Dairy Cow Milk Production, Grazing Behavior, And Dry Matter Intake, E. Kennedy, M. Mcevoy, J. P. Murphy, M. O'Donovan

Housing and Confinement of Farm Animals Collection

The objective of this experiment was to investigate the effect of restricting pasture access time on milk production and composition, body weight and body condition score change, dry matter intake, and grazing behavior of autumn calving dairy cows in midlactation. Fifty-two (19 primiparous and 33 multiparous) Holstein-Friesian dairy cows (mean calving date, August 17 ± 91.2 d) were randomly assigned to a 4-treatment (n = 13) randomized block design grazing study. The 4 grazing treatments were: (i) full-time access to pasture (22H; control), (ii) 9-h access to pasture (9H), (iii) two 4.5-h periods of access to pasture after both milkings …

The Welfare Of Cows In The Dairy Industry

Agribusiness Reports

More than 9 million cows compose the U.S. dairy herd. Repeated reimpregnation, short calving intervals, overproduction of milk, restrictive housing systems, poor nutrition, and physical disorders impair the welfare of the animals in industrial dairy operations. Once their productivity wanes, the cows are often weak as a result of high metabolic output. Typically, these “spent” dairy cows are culled and processed as ground beef. In their fragile end-of-production state, handling, transport, and slaughter raise additional welfare concerns.

The Welfare Of Sows Used For Breeding In The Pig Industry

Agribusiness Reports

The conditions afforded sows (adult female pigs) used for breeding on industrial pig production operations present a number of welfare problems. Sows are routinely confined in gestation and farrowing crates barely larger than their own bodies, where they are unable to turn around during their pregnancy and lactation periods, often in excess of 128 consecutive days. Behavioral abnormalities such as stereotypic bar-biting and aggression arise due to environmental deficiencies and restricted feeding regimens. Sows in large, industrial operations are also affected by a number of production-related diseases and suffer from higher mortality rates. A reevaluation of current confinement systems and …

Welfare Issues With Conventional Manual Catching Of Broiler Chickens And Turkeys

Agribusiness Reports

Approximately 9 billion chickens and 270 million turkeys are raised for meat annually in the United States. When these farmed birds reach market weight, they must be caught and crated for transport from production facilities to slaughter plants. Conventional manual catching results in severely compromised welfare. Birds experience stress and fear, and can be physically harmed, suffering bruises, broken bones, dislocated joints, and other injuries. Alternatives to conventional manual catching practices that improve bird welfare exist, including mechanical harvesters, gentle manual catching, and, for turkeys, herding into specially designed transport crates.

The Impact Of Industrialized Animal Agriculture On World Hunger

Agribusiness Reports

Of the world’s nearly 6.8 billion humans, almost 1 billion people are malnourished. Feeding half the world’s grain crop to animals raised for meat, eggs, and milk instead of directly to humans is a significant waste of natural resources, including fossil fuels, water, and land. Raising animals for food is also a major contributor to global warming, which is expected to further worsen food security globally. To meet the daily nutritional needs of a rapidly expanding population, the world’s human community, particularly in Western countries, must reduce its reliance on animal products and shift to a more plant-based diet.

The Implications Of Farm Animal-Based Bioenergy Production

Agribusiness Reports

As the current and potential impacts of climate change become more evident and increasingly urgent, entities such as governments, corporations, and non-governmental organizations (NGOs) are seeking out non-fossil fuelbased sources of energy to mitigate those effects. In addition, many governments are investigating ways to promote their own domestic energy sources as a result of rising oil prices. Bioenergy—made from recently living organic matter, such as plants, agricultural waste and crop residue, meat processing wastes, or farmed animals’ fats and manure—has quickly become one of the fastest growing, and controversial, alternative energy sources. Globally, production of biofuels, generally used for transport, …

The Welfare Of Animals In The Duck Industry

Agribusiness Reports

Duck production in the United States shares many of the same intensive husbandry practices found in the chicken and turkey industries, despite being much smaller in scale. The vast majority of farmed ducks are reared in dimly lit sheds with high stocking densities and without access to water for swimming, a significant welfare concern for these aquatic animals. Lameness, feather pecking, respiratory problems, and eye infections are common, and most birds are subjected to bill-trimming, a physical mutilation known to cause pain. The stress and physical trauma of catching and crating for transport, as well as the journeys themselves, further …

The Welfare Of Animals In The Egg Industry

Agribusiness Reports

Hundreds of millions of chickens in the egg industry suffer from poor welfare throughout their lives. Male chicks, considered a byproduct of commercial hatcheries, are killed soon after they hatch. The females are typically beak-trimmed, usually with a hot blade, to prevent them from developing the abnormal pecking behaviors that manifest in substandard environments. The overwhelming majority of hens are then confined in barren battery cages, enclosures so small that the birds are unable even to spread their wings without touching the cage sides or other hens. Battery cages prevent nearly all normal behavior, including nesting, perching, and dustbathing, all …

The Welfare Of Crustaceans At Slaughter, Stephanie Yue

Agribusiness Reports

The most common methods of slaughtering crustaceans include splitting, spiking, chilling, boiling, gassing, “drowning,” and using chemicals or electricity. As crustaceans do not have a centralized nervous system, unlike vertebrates, they do not die immediately upon destruction of one discrete area, such as the brain. New technologies, including the Crustastun electrical stunning and killing system, may improve the welfare of crustaceans during slaughter, which is critically important as most if not all current techniques are inhumane.

The Welfare Of Animals In The Aquaculture Industry

Agribusiness Reports

In the United States, approximately 1.3 billion fish are raised in off-shore and land-based aquaculture systems each year for food, making them the second-most commonly farmed animal domestically, following broiler chickens. The majority of farmed fish are subject to overcrowded and restrictive conditions, which, if unchecked, can quickly deteriorate water quality, cause severe stress, and result in increased mortality. Aquaculture practices and production—including handling, grading, transport, genetic manipulation, aggression from conspecifics, predation, physiological stress, and inhumane slaughter—compromise the welfare of these animals.

The Welfare Of Animals In The Turkey Industry

Agribusiness Reports

The natural behavior and habitat of wild turkeys stand in sharp contrast to the life of turkeys commercially raised for meat. Overcrowded in automated, barren “grow-out” houses, turkeys are offered little opportunity to display their full range of complex social, foraging, and exploratory behavior. Today’s commercial breeds grow at an unnaturally rapid pace to unprecedented weights. This forced rapid growth further compromises their health and welfare, and causes them to suffer from skeletal, muscular, and other health problems, as well as painful and often crippling leg disorders. Breeding birds, unable to mate naturally due to genetic selection for fast growth …

Welfare Issues With Caponizing Chickens

Agribusiness Reports

No U.S. state or federal regulations prohibit the practice of caponizing cockerels—castrating male chickens under one year of age. Crude instructions and surgical implements are readily available to provide any amateur “hobbyist” with the means to perform this procedure, typically on fully conscious, unanesthetized birds. Caponizing has been banned in the United Kingdom due to animal welfare concerns and should be disallowed in the United States.

Welfare Issues With Transport Of Day-Old Chicks

Agribusiness Reports

In the United States, more than 9 billion chickens and 250 million turkeys are raised and slaughtered annually for food. Virtually all broiler chickens (those raised for meat) and turkeys come from strains produced by four and three primary breeding companies, respectively. Within several hours after hatching, the chicks are typically relocated from the hatchery or breeder farm to the commercial grow-out facility via ground and air transportation. Small hatcheries also send chicks to backyard “hobbyists” via U.S. Postal Service delivery. Unless carefully controlled and properly managed, transport—whether by truck or plane and regardless of scale, commercial or specialty—can subject …

The Impact Of Industrialized Animal Agriculture On Rural Communities

Agribusiness Reports

Industrialized animal agriculture production practices and systems not only jeopardize the welfare of farm animals and the environment, but also negatively impact public health, independent family farmers, and quality of life in rural communities. The tolls exacted on rural communities necessitate dramatic and immediate changes in animal agriculture.

The Impact Of Animal Agriculture On Global Warming And Climate Change

Agribusiness Reports

The farm animal production sector is the single largest anthropogenic user of land, contributing to soil degradation, dwindling water supplies, and air pollution. The breadth of this sector‘s impacts has been largely underappreciated. Meat, egg, and milk production are not narrowly focused on the rearing and slaughtering of farm animals. The animal agriculture sector also encompasses feed grain production which requires substantial water, energy, and chemical inputs, as well as energy expenditures to transport feed, live animals, and animal products. All of this comes at a substantial cost to the environment.

One of animal agriculture‘s greatest environmental impacts is its …

The Impact Of Industrialized Animal Agriculture On The Environment

Agribusiness Reports

The continuous confinement of chickens, pigs, turkeys, cattle, and other animals raised in industrialized agricultural systems jeopardizes the animals’ welfare and degrades the environment. Factory farms produce immense quantities of animal waste and byproducts, which threaten water and air quality and contribute to climate change.

Human Health Implications Of Non-Therapeutic Antibiotic Use In Animal Agriculture

Agribusiness Reports

For decades, the U.S. meat industry has fed medically important antibiotics to chickens, pigs, and cattle to accelerate their weight gain and prevent disease in the stressful and unhygienic conditions that typify industrialized animal agriculture production facilities. A strong scientific consensus exists, asserting that this practice fosters antibiotic resistance in bacteria to the detriment of human health. In response to this public health threat, the European Union has banned the non-therapeutic feeding of a number of antibiotics of human importance to farm animals. Given these serious concerns as well as recent data that suggest an overall lack of financial benefit, …

Factory Farming In America

Agribusiness Reports

The True Cost of Animal Agribusiness for Rural Communities, Public Health, Families, Farmers, the Environment, and Animals

Food Safety Concerns With The Slaughter Of Downed Cattle

Agribusiness Reports

Nonambulatory cattle may be at higher risk of harboring foodborne pathogens such as E. coli O157:H7, Salmonella, and, very rarely, the infectious agent that causes bovine spongiform encephalopathy, colloquially known as “mad cow disease.” The exclusion of nonambulatory cattle from slaughter for human consumption may strengthen the safety of the food supply and is a prudent measure already in place throughout the European Union.

Human Health Implications Of Live Hang Of Chickens And Turkeys On Slaughterhouse Workers

Agribusiness Reports

Nonambulatory cattle may be at higher risk of harboring foodborne pathogens such as E. coli O157:H7, Salmonella, and, very rarely, the infectious agent that causes bovine spongiform encephalopathy, colloquially known as “mad cow disease.” The exclusion of nonambulatory cattle from slaughter for human consumption may strengthen the safety of the food supply and is a prudent measure already in place throughout the European Union.

The Long Haul: Risks Associated With Livestock Transport, Michael Greger

Agribusiness Collection

The Food and Agriculture Organization (FAO) of the United Nations describes live animal transport as “ideally suited for spreading disease,” given that animals may originate from different herds or flocks and are “confined together for long periods in a poorly ventilated stressful environment.” Given the associated “serious animal and public health problems,” the Federation of Veterinarians of Europe has called for the replacement of the long-distance transportation of live animals for slaughter as much as possible to a “carcass-only trade.”

In the United States, more than 50 million live cattle, sheep, and pigs and an unknown number of the more …

Acute Stress Induced By The Preslaughter Use Of Electric Prodders Causes Tougher Beef Meat, R. D. Warner, D. M. Ferguson, J. J. Cottrell, B. W. Knee

Slaughter and Slaughtering Practices Collection

Adrenergic activation and hormone release preslaughter is an inevitable outcome of the systems used to move cattle to slaughter. The aim of this experiment was to investigate the effects of acute preslaughter stress in beef cattle on postmortem muscle metabolism and the meat quality, including consumer-assessed eating quality. Eighty-four cattle were used on three separate days, with ‘mobs’ of four cattle allocated to either a ‘control’ (no electric goads used preslaughter) or a ‘stress’ (six prods given with an electric goad over 5–10 min) treatment at 15 min preslaughter. Cattle undergoing the ‘stress’ treatment had higher plasma lactate at slaughter. …

Influence Of Free-Stall Base On Tarsal Joint Lesions And Hygiene In Dairy Cows, W. K. Fulwider, T. Grandin, D. J. Garrick, T. E. Engle, W. D. Lamm, N. L. Dalsted, B. E. Rollin

Housing and Confinement of Farm Animals Collection

The objective was to quantify the incidence of tarsal lesions and level of hygiene by stall bed type. Cows were scored on 100 dairies from Wisconsin, Minnesota, Indiana, Iowa, and New York in the fall and winter. Thirty-eight dairies used rubber-filled mattresses (RFM), 27 had sand beds, 29 had waterbeds, and 6 used compost packs (CPk). Stocking density, stall dimensions, bedding amount, bedding frequency, and type of bedding were recorded. One pen of early-lactation multiparous cows on each dairy was scored based on injury of the tarsal joints at the lateral and medial surfaces and tuber calcis at the dorsal, …