Browsing by Author "Lineweaver, Joseph A."

Now showing 1 - 7 of 7
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    Evaluating Heat Detection
    McGilliard, Mike L.; Lineweaver, Joseph A. (Virginia Cooperative Extension Service, 1979-06)
    Regularly reproducing dairy cows are critical to the success of every dairyman. The most effective measure of reproductive efficiency for a herd is average days open, the number of days between the most recent dates of calving and breeding. This guideline will help you evaluate the success of your heat detection program, an important influence of days open.
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    Farm Semen Storage Tanks: Their Care and Maintenance
    Lineweaver, Joseph A.; Aalseth, Earl Peirce (Virginia Cooperative Extension Service, 1980-08)
    Each year there is an increase in the number of Virginia dairy farmers who are breeding their cows artificially. As a result, the number of on-the-farm semen tanks has increased. Consequently, there is a greater likelihood of an individual having problems with a semen tank. With proper care, maintenance, and use, the chance of problems can be reduced...
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    Leucocyte Screening Tests and Dairy Herd Improvement
    Lineweaver, Joseph A.; Patterson, W. N.; Kalison, S. L. (Virginia Cooperative Extension Service, 1968-06)
    Mastitis varies in its effect on the mammary gland from mild irritation to almost complete destruction of the secretory tissue. Dairymen can usually detect clinical mastitis by the appearance of the milk or udder swelling and are aware of losses caused by acute stages of this disease. Early infections and subclinical cases are more difficult to detect and the unrealized losses in production are harder to recognize.
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    Proper Dry Cow Management
    Jones, Gerald M.; Lineweaver, Joseph A. (Virginia Cooperative Extension Service, 1981-04)
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    Reproduction Analysis Cost of "Days Open"
    Lineweaver, Joseph A. (Virginia Cooperative Extension Service, 1981-01)
    Excessive days open cost Virginia dairymen an estimated $95.57 per cow during the 1979-80 DHI year. That means that during last year the loss for Virginia's 136,000 Grade "A" cows was near $14,000,000. The three following pages summarize the analysis conducted on 889 herds completing the 1979-80 DHI year. Page two gives the analysis by DHI Association and pages three and four are by county.
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    Reproduction Analysis Cost of "Days Open"
    Lineweaver, Joseph A. (Virginia Cooperative Extension Service, 1980-01)
    Excessive days open cost Virginia dairymen an estimated $92.21 per cow during the 1978-79 DHI year. That means that during last year the loss for Virginia's 136,000 Grade "A" cows was $12,540,000. The three following pages summarize the analysis conducted on 877 herds completing the 1978-79 DHI year. Page two gives the analysis by DHI Association and pages three and four are by county.
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    The Virginia Mastitis Prevention and Control Program
    Baldwin, V. L.; Nageotte, G. J.; Lineweaver, Joseph A. (Virginia Cooperative Extension Service, 1968-06)
    Mastitis is the dairy industry's -number oμe herd health problem~ Virginia dairymen launched a state-wide campaign to combat this disease early in 1958 when the Virginia State. Dairyman·'s Association initiated the organization of a State Mastitis Prevention and Control Committee. The committee membership includes representatives from every state organization and agency that works with dairy farmers. Those represented are the Virginia State Dairyman's Association, Virginia Dairy Fieldmen's Association, Purebred Cattle Clubs, Fed~ration of DHIA's, Artificial Breeding Associations, Veterinarians Association, Dairy Products Association, State Department of Agriculture, V.P.I. Department of Agricultural Education, and the V.P.I. Agricultural Extension Service. In 1966 the State Committee added representatives from the Extension Agents' Association, the Vocational Agricultural Instructors' Association, and the Milking Machine Manufacturers' Council. Additional representation from V.P.I. was provided as follows: A representative from Administration, a representative from the Dairy Science Department and a representative from the Veterinary Science Department. The Virginia State Dairyman's Association was empowered to appoint 5 producers instead of one.