Browsing Dairy by Subject "Milk production"

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Browsing Dairy by Subject "Milk production"

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  • Dufva, G.; Bartley, E.; Dayton, A.; Riddell, D. (Kansas Agricultural Experiment Station, 2012-10-04)
    Two lactation trials were undertaken to evaluate the effect of a niacin supplement on milk production and 'the physiological symptoms of ketosis. Blood ketone and non-esterified fatty acid levels were lower and blood ...
  • Call, Edward P.; Dunham, James R. (Kansas Agricultural Experiment Station, 2011-08-02)
    An analysis of Kansas Holstein herds in 1992 indicated that the yearly milk production per cow had a significant effect on returns to labor and management. The lowest quartile herds (13,445 lb per cow average) had a ...
  • Call, Edward P. (Kansas Agricultural Experiment Station, 2011-05-12)
    An analysis of 4,334 Holstein dairies confirms the negative genetic correlation that exists between milk production and reproduction. The most obvious traits affected are services per conception and conception rate. When ...
  • Call, Edward P. (Kansas Agricultural Experiment Station, 2011-05-20)
    Although there is a genetic antagonism between yearly production per cow and reproduction, analysis of Kansas Holstein herds suggests that managers of higher producing herds overcome this inverse relationship. Higher ...
  • Vargas, C.F.; Bradford, Barry J. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 2012-09-07)
    Exogenous amylase, sucrose, or a combination was used in diets with reduced starch content. The trial was performed in 48 lactating Holstein cows, and milk yield, milk composition, and dry matter intake were measured. ...
  • Dunham, James R. (Kansas Agricultural Experiment Station, 2012-10-04)
    The March 1984 DHI summary of Kansas Holstein herds shows some interesting correlations of various feeding, breeding, and management factors to production (Table 1). The Rolling Herd Average (RBA) is an excellent evaluation ...
  • Ward, G.M.; Morrill, J.L.; Morrill, M.B.; Dayton, A.D. (Kansas Agricultural Experiment Station, 2012-10-04)
    Rations containing either soybean meal, raw full-fat soybeans, or processed soybeans were compared using 36 high-producing dairy cows in early lactation. The processed soybeans were heated in a California Pellet Milt ...
  • Shirley, John E.; Galdamez, C.; Estrada, J. (Kansas Agricultural Experiment Station, 2012-09-07)
    Forty Holstein cows in mid-lactation were utilized to evaluate the effects of water oxygenation on milk production, milk composition, and somatic cell count. Cows were fed a total mixed ration consisting of 25% alfalfa, ...
  • Cvetkovic, B.; Shirley, John E.; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-01)
    Twenty-four lactating Holstein cows were used to determine the production response to the inclusion of brown seaweed in the basal diet during summer heat stress. Cows were blocked by lactation number, days in milk, and ...
  • Dingwell, R.T.; Leslie, K.E.; Sargeant, J.M.; Schukken, Y.H.; Timms, L.L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-10)
    A study of 250 cows located in Canada and the United States revealed the rate of new mammary infections was 9.9% during the dry period. Average milk production on the day prior to dry-off was 13.2 ± 7.2 kg. The odds ...
  • Shirley, John E. (Kansas Agricultural Experiment Station, 2012-09-20)
    Progress in the dairy industry over the past 30 yr can be defined as a movement toward fewer farms, more cows per farm, fewer total cows, more milk per cow, a gradual decline in total annual milk production from 1950 ...
  • Smith, John F., 1962-; Brouk, Michael J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-12-01)
    Mastitis is the most costly health concern in the dairy industry today. Annual losses have been estimated at $180 to 185 per cow. Based on this figure, annual losses for Kansas producers may exceed $15 million. Nationally, ...
  • Smith, John F., 1962-; Harner, Joseph P.; Pulkrabek, B. J.; McCarty, D. T.; Brouk, Michael J.; Shirley, John E. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 2011-07-22)
    Ninety-three multiparous Holstein cows averaging 130 days in milk (DIM) were utilized to evaluate three cooling treatments installed in separate pens of a four-row freestall barn in northeast Kansas during the summer of ...
  • Smith, John F., 1962-; Harner, Joseph P.; Pulkrabek, B. J.; McCarty, D. T.; Brouk, Michael J.; Shirley, John E. (Kansas Agricultural Experiment Station and Cooperative Extension Service, 2011-07-22)
    One hundred fifty-nine Holstein cows (66 primiparous and 93 multiparous) were assigned to each of three different cooling systems installed in two-row freestall barns on a northeast Kansas dairy. One barn was equipped with ...
  • Meyer, M. J.; Smith, John F., 1962-; Harner, Joseph P.; Titgemeyer, Evan C.; Shirley, John E. (Kansas Agricultural Experiment Station and Cooperative Extension Service., 2011-05-04)
    Ninety-six Holstein multiple-lactation cows averaging 115 days in milk (DIM) and 60 Holstein first-lactation cows averaging 97 DIM at the initiation of a 10-wk study between June 10 and August 22, 1998 were used to ...
  • Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station, 2012-09-07)
    Research in reproductive physiology and breeding management of dairy cattle at Kansas State University has the following objectives: 1) to better understand those factors that influence the reestablishment of ovarian ...
  • Kube, J.C.; Frey, R.A.; Shirley, John E. (Kansas Agricultural Experiment Station, 2012-09-20)
    Two Holstein cows were fed Rumensin for 12 weeks, beginning approximately 90 days postpartum. Milk production increased 7%, whereas percentage fat in milk decreased 10.3%. Percentage protein in milk increased 9.6% in ...
  • Call, Edward P. (Kansas Agricultural Experiment Station, 2012-09-20)
    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, 2012-09-20)
    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 ...

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