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Dairy cattle diseases
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Scientists in northern Europe are scrambling to learn more about a new virus that causes fetal malformations and stillbirths in cattle, sheep, and goats. For now, they don't have a clue about the virus's origins or why it's suddenly causing an outbreak; in order to speed up the process, they want to share the virus and protocols for detecting it with anyone interested in studying the disease or developing diagnostic tools and vaccines. The virus, provisionally...
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Dear members, I found the following top story on asian-agribiz.com: India is soon to introduce a law requiring livestock producers to strictly follow a withdrawal period in antibiotic use in feed in an attempt to make meat, milk and eggs free from antibiotic residue. Amit Sachdev, India Representative of the US Grains Council told Asian Agribusiness Media that the law will take effect within the next few months. The Ministry of...
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The dairy cow's immune system and clinical health respond to constantly changing stresses and disease challenges. The stresses and disease challenges include parturition, weather, disease, farm management, quality of feeds, feed ingredients and forage, etc. When the stress and disease challenge level is above the threshold that a cow can handle, clinical symptoms will occur. However, if stress and disease management technologies are employed on a daily basis, it...
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Bovine respiratory disease (BRD) is the most significant health problem of the beef industry which affects the lower respiratory tract / lungs or upper respiratory tract. It can manifest when cattle stress levels are raised due to weaning, shipping, processing, adverse weather, and overcrowding and this compromises the defense mechanisms of the immune system. Since it is always more convenient to focus on prevention than treatment, BRD vaccines are...
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Researchers at the University of Copenhagen (formerly The Veterinary and Agricultural University of Copenhagen, Denmark) have spent more than 10 years developing an effective method of curing calcium deficiency in calving cows. Zeolite has proved to strengthen cows´ own defences against milk fever and provide for more stable milk production. A water softener showed the way Strange...
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Abstract Dermatophytosis (ringworm), an infection of the superficial keratinized structures of the skin and hair, is the most common contagious skin disease in cattle. The infectious diseases caused by dermatophytes are mainly related to the enzymes product by these fungi. Conversely, elements such as zinc and selenium are involved in the regulation of immune responses to infection. There are rare reports...
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Dairy cattle comfort and nutrition to avoid diseases - Kenneth Nordlund
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ABSTRACT
Random sampling of milk, sera and synovial fluid from 100 cattle in a farm with a history of retained placenta, abortion and arthritis and hygroma was investigated. All milk and sera samples were subjected to various Brucellosis diagnostic tests. Culture study was carried out with aspirated synovial fluid and the culture growth was examined. Further, intense study of the farm animals revealed that...
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Abstract The objective of this work was to evaluate hematological, biochemical and ruminant parameters for diagnosis and treatment of the left displaced abomasum (LDA) in dairy cows, in the Plateau Region of Rio Grande do Sul, Brazil. Ruminant fluid, blood and urine samples were collected from 20 cows suffering LDA and from 20 healthy cows (control). The cows with LDA showed lower values of daily milk production, body weight and corporal...
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Effect of choline supplementation on milk production and milk lipids in post peak lactating Holstein cows
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Can ammonia overload (urea 1.4% and CP 25% of DM) from a high protein diet cause temporary and permanent damage to dairy cows (other than lowered fertility)? ...
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In the March 2010 issue of The Veterinary Clinics of North America Food Animal Practice, authors Dr. Patrick Gorden and Dr. Paul Plummer review the biosecurity programs that should be implemented for young calves.
Here's a quick review of the "inconvenient truths" about pneumonia in pre-weaned calves: 1. Newborn calves acquire immunity to disease from colostrum, and, except in limited, specific...
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Introduction The multitude of disorders that dairy cows face during the transition to lactation is a perennial source of concern for dairy producers, nutritionists, and veterinarians. Total disease incidence in the several weeks after parturition accounts for a substantial proportion of all morbidity on many dairies (Ingvartsen, 2006), with particularly high rates of mastitis, metritis, milk fever, displaced abomasum, ketosis, and...
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To overcome an outbreak of clinical mastitis or to control a high SCC level the following approach has proved very successful. 1. Stop spread of infection i.e. pre spray and dry wipe, wear gloves and spray gloves regularly, disinfect clusters between milkings by dipping clusters in per acetic acid solution. 10mls of serpent to 2 gallons of water and change after 10 dips. 2. Cell count all cows every 3 weeks for 3 times. 3.Carry out...
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How can TB (Tuberculosis) be detected in herds? ...
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By definition Mastitis is inflammation of the mammary gland.
In the present state of knowledge it seems practicable and reasonable to define mastitis as a disease characterized by the presence of a significantly increased leukocyte count in milk from affected glands. The Mastitis Committee of the Australian Veterinary Association defined the nature and causes of mastitis as Mastitis is an inflammation of udder and as such is a disease complex resulting from any...
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Dairy cattle comfort and nutrition to avoid diseases - Kenneth Nordlund
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Anaplasmosis is a vector-borne infectious, hemolytic, rickettsial disease of cattle, sheep, goats, and other wild ruminants. In Cattle the most common etiological agent is Anaplasma marginale, while cattle also are affected with Anaplasma caudatum, which may result in severe disease and Anaplasma centrale generally resulting in mild disease. An anemia results from extra-vascular hemolysis when parasitized red blood cells (RBC's) membranes are altered and...
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An Unidentified disease characterized by hypersensitivity, incoordination, a peculiar stiff-legged gait of the hind legs, severe generalized tumors of the skeletal muscles, progressive paresis, paralysis and constipation and death was reported in a cattle herd of 82 in Kathmandu valley which was maintained in moldy rice straw feeding. The most notable gross pathological lesions in one bull and two cows which died were degenerative and necrotic changes in...
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Effect of choline supplementation on milk production and milk lipids in post peak lactating Holstein cows
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I think most Virginia Dairy producers are welcoming the signs of spring-warmer days, thawed water troughs and green grass-but the first tender sprigs of grass that our animals are picking at may harbor parasite larvae that have the potential to decrease the growth and health of our cattle. This spring's milk prices can be a distraction to management activities such as de-worming. Young stock are particularly susceptible to parasites, and most of our dairy young stock are kept in...
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Some farmers use a tractor-mounted Global Positioning System (GPS) - a constellation of earth-orbiting satellites - to help determine how much fertilizer and herbicide to apply in a specific location in a field when combined with other information such as soil samples, moisture content, and weed density in a computer spreadsheet. It is also used to measure acreages and field slope, and identify field boundaries. One Oregon State University research...
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Foot health or lameness has moved up to the second most expensive disorder that dairy cattle experience (mastitis is first). English workers reported 60 cases of lameness per 100 cows annually. Wisconsin researchers reported 73 cases per 100 cows in 30 herds (15 free-stall and 15 conventional herds averaging 23,060 pounds of milk). The cost was estimated at $122 per cow with lameness, hairy heel wart at $88 per case, sole ulcers at $369 per case, and horn disease at $227 per case. English...
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For some dairy producers, displaced abomasums (DAs) have become a problem of epidemic portions. Over the years, many researchers have conducted studies regarding the cause, prevalence, incidence, risk factors, and economic impact. The causes of DAs are believed to be metabolic disturbances, lactational stress, and nutritional disorders. The objectives of this study were to analyze how many dairy producers had a DA percentage of over five percent, how many cows with DAs recovered after...
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