Now showing items 21-40 of 53

    • Estimated relative producing ability 

      Virginia Cooperative Extension (Virginia Cooperative Extension, 1992)
      Discusses ERPA as a prediction of a dairy cow's future yield relative to other cows currently in the herd.
    • External parasites of dairy cattle 

      Roberts, James E. (Virginia Cooperative Extension Service, 1980-01)
      List of insect pests, insecticides and how to mix and apply them.
    • Guidelines to culling cows with mastitis 

      Jones, G. M. (Gerald Murray), 1941- (Virginia Cooperative Extension, 1999)
      Culling is often the most practical means for eliminating cows chronically infected with mastitis. Cows that are infected present a risk to non-infected cows in the herd.
    • Handling mastitis problem herds 

      Jones, G. M. (Gerald Murray), 1941- (Virginia Cooperative Extension, 1992)
      Mastitis prevention is the most important ingredient in mastitis control. Preventative measures include attention to all details.
    • Improved foot health : genetic and management implications 

      Cassell, Bennet G. (Virginia Cooperative Extension, 1995)
      This guideline presents research results about the role of genetics in foot structure and proposes alternatives to heavy emphasis on foot shape in sire selection.
    • Income Over Feed Costs in the Dairy Enterprise 

      Ferreira, Gonzalo (Virginia Cooperative Extension, 2015-09-10)
      Notes the importance of estimating and monitoring income over feed costs, in relation to individual cows, and the entire herd.
    • Ionophores for dairy heifers 

      Stallings, Charles C.; Wahlberg, Mark L.; James, Robert E. (Virginia Cooperative Extension, 1992)
      Ionopheres have been approved for use with dairy heifers to improve weight gains by increasing utilization of dietary energy.
    • Limit these feeds in rations for dairy cattle 

      Stallings, Charles C. (Virginia Cooperative Extension, 2000)
      When feeding lactating dairy cows it is best to limit amounts of certain feeds. Here is a list of some feeds used and suggested maximums.
    • Mastitis control in heifers and first lactation 

      Jones, G. M. (Gerald Murray), 1941-; Bailey, Thomas Lee, 1951- (Virginia Cooperative Extension, 1998)
      Many heifers may have a mastitis infection at calving. Management factors associated with reducing risk of infection are discussed.
    • My friend the cow 

      Virginia Polytechnic Institute and State University. Extension Division; Irwin, Kitty (Virginia Polytechnic Institute and State University. Extension Division, 1980-01)
      An educational coloring book about cows.
    • Net merit 

      Cassell, Bennet G. (Virginia Cooperative Extension, 1994)
      Net Merit is a selection index that combines genetic evaluations for somatic cell score, productive life, and product value adjusted for feed costs.
    • Nitrogen & milk urea nitrogen facts 

      Myers, Kelly; Knowlton, Katharine Frost; Jones, G. M. (Gerald Murray), 1941- (Virginia Cooperative Extension, 2000)
      There is a direct relationship between protein levels in dairy cattle rations and the amount of nitrogen excreted in manure. Surface water problems can result from excessive nitrogen levels.
    • Nutrition changes milk composition 

      Stallings, Charles C. (Virginia Cooperative Extension, 1998)
      Many things can affect milk composition, including environment, breed, nutrition and temperature.
    • Nutrition for the early developing heifer 

      Bailey, Thomas Lee, 1951-; Murphy, Julia Mary; James, Robert E. (Virginia Cooperative Extension, 1999)
      Discusses nutrition for heifers and presents several factors that can reduce replacement-rearing costs and increase profits for the producer.
    • Pre-dipping : pre-milking disinfection with teat dip 

      Jones, G. M. (Gerald Murray), 1941- (Virginia Cooperative Extension, 1992)
      Most mastitis is caused by microbial penetration of the teat. The use of pre-dipping should be considered for herds that are experiencing problems.
    • Proper dry cow management 

      Jones, G. M. (Gerald Murray), 1941- (Virginia Cooperative Extension, 1992)
      The management of dry cows needs as much planning and attention as milking cows. Neglecting certain precautions can dramatically influence long-term success in a herd.
    • Proper milking practices 

      Jones, G. M. (Gerald Murray), 1941- (Virginia Cooperative Extension, 1992)
      Discusses proper milking practices for maximum cow health and milk production.
    • PTA's for cows : calculation and use 

      Cassell, Bennet G. (Virginia Cooperative Extension, 1994)
      Discusses female PTAs, factors affecting PTAs for individual cows, and how to use the estimates for within herd management.
    • Raising the dairy calf 

      V.P.I. Agricultural Extension Service (V.P.I. Agricultural Extension Service, 1944-03)
      Provides information on 4-H dairy club work with a discussion on caring for and feeding dairy calves.
    • Relative values of alternative feeds 

      Stallings, Charles C. (Virginia Cooperative Extension, 1991)
      Shelled corn and soybean meal are the standards for energy and protein, against which other feeds are usually priced. When corn and soybean meal prices are high, alternatives are many times attractive.