Browsing Dairy by Title

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Browsing Dairy by Title

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  • Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station, 1987)
    In three of six studies involving over 1,650 cows, treatment of lactating dairy cows with 100 µg GnRH (2 cc Cystorelin®) at the time of third or fourth insemination improved conception rates by 12 percentage points. When ...
  • Stevenson, Jeffrey S.; Call, Edward P. (Kansas Agricultural Experiment Station, 1987)
    Poor heat detection is a major cause of reproductive failure in most dairy herds. About one-half of the heat periods are undetected, resulting in prolonged calving intervals. In many cases, the problem is serious enough ...
  • Stevenson, Jeffrey S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2005)
    Use of timed AI programs has become commonplace on most dairy farms either because cows are not watched sufficiently to detect estrus, or because expression of estrus is limited by confinement housing. A number of ...
  • Call, Edward P. (Kansas Agricultural Experiment Station, 1987)
    USDA-DHIA Sire Summaries are published semiannually and provide the dairy industry with an accurate evaluation of the transmitting ability of bulls for milk and milk components. Genetic potential is established at the ...
  • Estrada, J.; Shirley, John E. (Kansas Agricultural Experiment Station, 1989)
    We all have heard about the use of BST in lactating dairy cattle during the last 6 to 8 years, but what is BST? Bovine somatotropin is another dairy management tool developed to improve the efficiency and reduce the cost ...
  • Dawson, D.P.; Morrill, J.L.; Reddy, P.G.; Behnke, Keith C. (Kansas Agricultural Experiment Station, 1987)
    Oil-extracted, desolveritized soy flour without additional heat treatment was used to prepare protein supplements for calf milk replacers by extrusion processing. Various combinations of temperature, moisture, calcium ...
  • Kobayashi, Y.; Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station, 1994)
    Holstein cows and virgin heifers were treated with GnRH and PGF in a novel 2a ovulation synchronization protocol, which involves one fixed-time insemination. One injection of GnRH is given on a Monday morning, followed ...
  • Stevenson, Jeffrey S.; Pursley, J. R. (Kansas Agricultural Experiment Station, 1993)
    Holstein cows milked twice daily were assigned to be inseminated at their first detected estrus (control) after 42 days in milk or received PGFza (PG) after 42 days, if they had a high milk progesterone (P4) test on ...
  • Sargeant, J. M.; Pulkrabek, B. J.; Scheffel, Michael V.; Park, A. F.; Shirley, John E. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 1999)
    The dynamics of somatic cell counts during the first 10 days in milk were compared among udder quarters of cows with intra-mammary infection at the time of calving and those with no infection present. The study group ...
  • Heikes, K.A. (Kansas Agricultural Experiment Station, 1986)
    For maximal genetic progress in a dairy, proven AI sires should be selected to use on replacement heifers. To minimize problems at calving, these sires should be selected from bulls that are breed average or better for ...
  • Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 1999)
    Using the Ovsynch protocol to prepare cows for re-insemination proved to be very effective. Its use guarantees that all cows found open at pregnancy diagnosis are reinseminated promptly within 10 days, and the average ...
  • Dunham, J.R. (Kansas Agricultural Experiment Station, 1996)
    High-producing dairy herds can consistently average a somatic cell count (SCC) <200,000. Herds with consistently higher averages can decrease SCC and realize higher profits. The SCC report discloses the pitfalls that ...
  • Cvetkovic, B.; Smith, J.F.; Harner, Joseph P.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2005)
    A rise in body temperature is a signal that heat stress has exceeded the heat-exchange capacity of the dairy cow. Previous studies have shown a strong positive correlation between vaginal temperature and respiration rate, ...
  • Zink, G.S.; Jeon, I.J.; Harbers, L.H. (Kansas Agricultural Experiment Station, 1989)
    Near infrared reflectance spectroscopy (NIRS) was used to develop calibration equations for the rapid determination of moisture, protein, and fat in Cheddar cheese. Most mean values from NIRS data had lower standard ...
  • Portaluppi, M.A.; Stevenson, Jeffrey S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2003)
    Initiation of the Ovsynch protocol at random stages of the estrous cycle produces differences in synchronization and pregnancy rates. Use of two injections of PGF2α administered 14 days apart, with the second ...
  • Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 1997)
    Various programs of estrus synchronization have been tested during the last 6 years to determine the least costly and most efficacious for dairy heifer replacements. Four systems were tested: 1) a modified Ovsynch treatment ...
  • Reddy, P.G.; Morrill, J.L.; Minocha, H.C.; Frey, R.A.; Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station, 1986)
    Thirty-two Holstein heifer calves receiving conventional rations were supplemented with 0 (control), 125, 250, or 500 IU vitamin E/calf/day. The objective was to determine the optimum requirement based on their ...
  • Fulhage, C. (Kansas Agricultural Experiment Station, 1992)
    The impact of environmental regulation on livestock production enterprises is, inevitably, an increase in production costs. Producers should recognize that these are the costs of doing business and will probably have ...
  • Harner, Joseph P.; Murphy, James P. (Kansas Agricultural Experiment Station, 1992)
    The dairy industry is receiving greater pressure to reduce its potential pollution to the environment. As the demand grows for cleaner streams, dairy operations will need to reduce and control the nutrient and sediment ...
  • Harner, Joseph P.; John, Smith (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2009)
    Water meters were installed on the evaporative cooling system of a long, low-profile, cross-ventilated dairy in the upper Midwest. The evaporative pad along the west side measured 10 by 350 ft. The water usage per unit ...