Dairy
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Prevalence of mastitis in dairy goats ranges between 5% and 30%, with Staphylococcus spp., otherwise known as the coagulase-negative staphylococci, identified as the most frequent cause of infection. These staphylococci produce persistent subclinical mastitis with markedly elevated somatic cell counts (SCC), which may lead to clinical symptoms.
Prevention is the key to controlling staphylococcal mastitis in dairy goats, as once this disease becomes established, chronic inflammation of mammary tissues and elevated SCC will follow, resulting in reduced milk yield and quality. This publication discusses proper husbandry practices and sanitation methods that can be implemented by producers. The results of two vaccine trials as a potential means to control mastitis in ruminants are also presented and discussed.
Vaccination should only be included as part of the whole herd approach to mastitis control. Any vaccination program must be carried out in conjunction with other proper management practices.
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Reproductive management of dairy heifers is one area in which many dairy producers can improve. Heifers are the most fertile animals in a herd and should have the greatest genetic potential. Dairy producers need to pay more attention to getting heifers bred sooner and breeding them to genetically superior bulls. This publication describes methods for improving dairy heifer reproductive management.
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Producers need to be aware of the impacts that manure can have on water and air quality. However, management of manure and other byproducts of livestock and poultry production has important impacts on farm profitability, neighbor relations and protecting soil and water quality.
This publication covers: Farm and Homestead Maps; Manure Storage and Treatment; Nutrient Budgeting with Nitrogen and Phosphorus; Land Application of Manure and Fertilizers; Grazing Land; Pesticide and Chemical Management for Water Quality; Mortality Management; Record Keeping; Coexisting with Neighbors; Emergency Action Plans; and other resources.
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Vaccines are an integral part of a comprehensive herd health program. When used in conjunction with other management tools, vaccines can reduce both the risk and impact of disease in beef cattle herds. Nevertheless, when used inappropriately, vaccines can be virtually useless and, in some cases, result in impaired productivity and significant economic losses.
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Mastitis continues to be a major livestock disease afflicting the U.S. dairy industry. As the industry strives to improve milk quality to meet consumer as well as exportation demands, the legal limit for bulk tank sec will likely be reduced from 750,000/ml to 400,000/ml in the near future. It is estimated that between 10 and 20% of US dairy farms, mostly located in the Southeast, are currently at or above the 400,000/ml SCC limit and will have to adopt stricter methods for controlling mastitis in their milking herds, dry cows, and heifers.
This publication reviews the survey results of adoption rates for mastitis control measures and shows that there is much room for improvement.
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This publication contains English-Spanish translations of common dairy reproduction terminology to help producers better use Spanish to evaluate reproductive management and communicate with employees.
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Financial data for the year 2005 were collected from participating dairy farms and screened for completeness and validity. Each dairy farm then received a benchmark report detailing its financial results compared to the average results for the other participants and the six dairy farms with the highest net farm income per cwt. This benchmark report is discussed with the dairy farms to identify challenges and opportunities for improvement. This publication is a summary of the financial performance of the dairy farms that participated in 2005. It is intended for general use by dairy farmers, the allied industry, government, and educational professionals.
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Prevalence of mastitis in unbred, breeding-age and pregnant dairy heifers is higher than formerly realized. Infected
mammary quarters, especially those with Staph. aureus IMI, exhibit reduced mammary gland secretory
potential, marked leukocyte infiltration and the accompanying inflammation. Both nonlactating and lactating
commercial antibiotic infusion products have been used successfully to cure existing infections and reduce SCC,
and nonlactating therapy prevents new IMI with environmental streptococci. However, the goal is to prevent
new infections from occurring in these young dairy animals through management strategies aimed at vaccination,
use of teat seals, fly control and dietary supplementation. As global milk quality standards
become more stringent, management practices based on curing existing infections and preventing new IMI
in heifers will ensure that these young dairy animals enter the milking herd free of mastitis and with low SCC.
Such practices should be considered for incorporation into dairy herd health programs in herds suffering from a
high prevalence of heifer mastitis, especially mastitis caused by Staph. aureus. Not only do these practices reduce
new infections in first-calf heifers at parturition, they also reduce the introduction of Staph. aureus to the milking
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The Dairy Business Analysis Project was initiated in 1996 to measure and document the financial performance of Florida dairy businesses using standardized accounting measures, so uniform comparisons could be made among participants. Formal collaboration between the Universities of Florida and Georgia began in 1998. This publication presents the results from fiscal year 1999 information.
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