Browsing Dairy by Author "Smith, John F., 1962-"

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Browsing Dairy by Author "Smith, John F., 1962-"

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  • Smith, John F., 1962-; Harner, Joseph P.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-11-29)
    Recently, there has been interest in constructing mechanical ventilation with evaporative pads to improve the environmental conditions for cows during periods of heat stress. Low profile cross-ventilated freestalls with ...
  • Harner, Joseph P.; Smith, John F., 1962-; Millner, R. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-11-29)
    The first low-profile cross-ventilated (LPCV) freestall building was stocked in fall 2005 in North Dakota. There currently are 3 other LPVC freestalls operational and 6 others under construction. The LPCV building offers ...
  • Schmidt, C.; Smith, John F., 1962-; Harner, Joseph P.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-11-29)
    Consumptive water usage by evaporative pads was measured during 7 days of a 3-week period at a Kansas (KS) dairy and a 2-day pe-riod at a North Dakota (ND) dairy. Water me-ters were installed between the water hydrants, ...
  • Smith, John F., 1962-; Harner, Joseph P. (Kansas Agricultural Experiment Station, 2011-05-05)
    Heat stress occurs when a dairy cow’s heat load is greater than her capacity to lose heat. The effects of heat stress include: increased respiration rate, increased water intake, increased sweating, decreased dry matter ...
  • Smith, John F., 1962-; Harner, Joseph P.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-08)
    Managing transition cows is a significant problem on dairy farms. The issues include nutritional considerations, stocking rates, metabolic disorders, heat stress, and access to feed and water. Often management of transition ...
  • Smith, John F., 1962-; Harner, Joseph P.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-08)
    Metabolic disorders and related health problems are a significant problem on dairy farms, resulting in increased culling and decreased profitability for producers. Early detection and treatment of disorders and disease is ...
  • Smith, John F., 1962-; Harner, Joseph P.; DeFrain, S.R.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-10)
    A study to determine the amount and location of water consumption in dairy freestall barns located in northeastern Kansas was conducted during the summer of 2000. Three farms, two Holstein farms with either 2-row or 4-row ...
  • Smith, John F., 1962- (Kansas Agricultural Experiment Station, 2012-09-20)
    Dry cows do not require the intensive daily management of cows in early lactation, but the handling of mastitis treatments, feeding regimen, and grouping are of utmost importance in determining how the cows will perform ...
  • Smith, John F., 1962- (Kansas Agricultural Experiment Station, 2011-05-06)
    As new technologies such as rbST become available to dairy producers, evaluating the profitability of those technologies on individual farms is essential. Costs associated with rbST include purchase of product, feed, and ...
  • Smith, John F., 1962-; Harner, Joseph P.; DeFrain, S.E.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-10)
    Heat stress reduces milk production, feed intake, and reproductive efficiency each summer in Kansas. Without heat abatement procedures, milk production may decline 20- 30% during the summer months. Research has shown that ...
  • Smith, John F., 1962-; Harner, Joseph P.; DeFrain, S.E.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-10)
    Cows previously trained with headlocks did not increase milk production or feed intake when headlocks were removed. Twoyear- old and older cows did not differ in response to headlocks and neckrails. Prudent use of headlocks ...
  • Harner, Joseph P.; Smith, John F., 1962-; Hammond, A.K.; Miller, W.F.; Park, A.F.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-10)
    Reducing heat stress is a key issue for dairy producers. Use of feedline soaking and supplemental airflow effectively reduces heat stress and increases milk production and profitability. High-pressure misting allows water to ...
  • Smith, John F., 1962-; Harner, Joseph P.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-11-29)
    During the summer of 2001 six tunnel ventilated tie stall barns in northeastern Missouri and southeastern Iowa were evaluated. Three of the barns were equipped with cellulose evaporative pads and three were not. Temperature ...
  • Mullins, C.R.; Moore, C.E.; Green, H.B.; Perfield, K.L.; Smith, John F., 1962-; Harner, Joseph P.; Bradford, Barry J.; Mamedova, Laman K.; Brouk, Michael J. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 2012-09-07)
    Thirty-two Holstein transition cows were used to determine the effects of monensin (Rumensin, Elanco Animal Health, Greenfield, IN; 400 mg/cow daily) on metabolism and feeding behavior. Cows were assigned randomly, based ...
  • Smith, John F., 1962-; Shirley, John E.; Titgemeyer, Evan C. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 2011-05-12)
    Two hundred cows located on a commercial dairy in Mesquite, NM were used to evaluate response to rbST (Posilac®) during heat stress in the summer of 1996. Cows were paired by days in milk (average = 153 d at initiation of ...
  • Mullins, C.R.; Weber, D.; Block, E.; Smith, John F., 1962-; Bradford, Barry J.; Brouk, Michael J. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 2012-09-07)
    Ninety-six lactating Holstein cows were used to determine the effects of using commercial supplements to supply additional lysine and methionine in diets containing large proportions of corn by-products. Cows were assigned ...
  • Harner, Joseph P.; Smith, John F., 1962-; Brouk, Michael J. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 2011-08-02)
    Temperatures and humidities outside and inside freestall barns and cow respiration rates were monitored on three Kansas and two Nebraska commercial dairy farms during the summer of 1999. All farms had 4-row freestall ...
  • Ortiz, X.A.; Smith, John F., 1962-; Bradford, Barry J.; Harner, Joseph P.; Oddy, A. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-11-23)
    Developing management strategies for Korral Kools will help producers provide cooling in the housing area while minimizing the operational cost of the Korral Kools system. Two experiments were conducted at a dairy in Saudi ...
  • Smith, John F., 1962-; VanBaale, M.; Jamison, C.; Rodriguez, R.; Harner, Joseph P.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-11-29)
    A project to evaluate the degree of heat stress in individual dairies was carried out in the summer of 2005. The object of this project was to develop a method to evaluate or audit how effective an individual dairy is in ...
  • Smith, John F., 1962-; Harner, Joseph P.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-10)
    A trial was conducted in the summer of 2000 to evaluate the effect of 4- and 6-row freestall barns located in northwest Iowa on barn temperature, barn humidity, and respiration rates of lactating Holstein cows. ...

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