Browsing Dairy by Subject "Performance"

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Browsing Dairy by Subject "Performance"

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  • Heikes, K. (Kansas Agricultural Experiment Station, 2012-09-07)
    The July 1989 USDA Sire Summary introduced a new system for genetic evaluations in dairy cattle. These evaluations, known as the Animal Model (AM), include several new features that help to increase the accuracy of ...
  • Anderson, K.L.; Nagaraja, Tiruvoor G.; Morrill, J.L.; Reddy, P.G.; Avery, T.B.; Anderson, N.V. (Kansas Agricultural Experiment Station, 2012-09-20)
    Twenty newborn bull calves assigned to two groups, protozoa-free or protozoa-inoculated, were used to determine the effects of ruminal protozoa on performance of early weaned calves. Calves in the protozoa group were ...
  • Reddy, P.G.; Morrill, J.L.; Minocha, H.C.; Morrill, M.B.; Galitzer, S.J.; Frey, R.A.; Dayton, A.D. (Kansas Agricultural Experiment Station, 2012-10-04)
    Forty-six Holstein heifer calves were used from birth to 3 rno to study the effect of supplemental vitamin E at 1400 or 2800 mg dl-a.-tocopherol acetate given orally at weekly intervals or 1400 mg dl-a-tocopherol by ...
  • Dunham, James R. (Kansas Agricultural Experiment Station, 2012-09-20)
    Feeding and managing dairy cows during the prepartum and early lactation periods have more effect on total lactation yields than all other factors. It is during this time that the pattern of milk production is established ...
  • Rezac, D.J.; Grigsby, K.N.; Bradford, Barry J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-11-23)
    A novel diet formulation strategy incorporating wet corn gluten feed at 47% of diet dry matter was evaluated in late-lactation cows. Diets were formulated for similar protein and energy concentrations with dramatic ...
  • Shirley, John E.; Lagombra, G.G. (Kansas Agricultural Experiment Station, 2012-10-04)
    The reproductive performance of 179 Holstein cows during the period from December 1978 through March 1984 was evaluated with respect to environmental temperature and humidity at the time of insemination. This study was ...
  • Beharka, A.A.; Morrill, J.L.; Nagaraja, Tiruvoor G. (Kansas Agricultural Experiment Station, 2011-05-25)
    Seventy-three, neonatal, Holstein, heifer calves in one experiment and 45 neonatal, Holstein, bull calves in another were used to study the effects of dietary Aspergillus oryzae extract (Amaferm) on calf performance. ...
  • Anderson, K.L.; Nagaraja, Tiruvoor G.; Morrill, J.L.; Reddy, P.G.; Avery, T.B.; Anderson, N.V. (Kansas Agricultural Experiment Station, 2012-09-20)
    Twenty-two newborn, bull calves were used to determine the effects of lasalocid on growth and feed intake of early-weaned calves from week 1 to 12. Calves were assigned to lasalocid or control groups on day 3. Lasalocid-fed ...
  • Call, Edward P.; Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station, 2012-10-04)
    Reproductive parameters were evaluated in 5,480 Holstein herds involving 335,673 cows to determine the reported negative genetic effect of production on reproduction. While higher producing herds had a slight decline in ...
  • Call, Edward P. (Kansas Agricultural Experiment Station, 2012-09-07)
    There has been no appreciable change in the reproduction status of Kansas dairy herds over the last 25 yr. For example, the average calving interval was 398 days in 1965 and 405 days in 1988. Analysis of other measures ...
  • Reddy, P.G.; Morrill, J.L.; Minocha, H.C.; Frey, R.A.; Stevenson, Jeffrey S. (Kansas Agricultural Experiment Station, 2012-10-04)
    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 ...

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