IDEAS home Printed from https://ideas.repec.org/p/ags/cfcs94/258758.html
   My bibliography  Save this paper

Effects Of Coat Color On Production And Reproduction Of Dairy Cattle On St. Croix

Author

Listed:
  • Godfrey, R.W.
  • Hansen, P.J.

Abstract

Records obtained from a commercial dairy farm, covering a period of 26 years, were analyzed to evaluate the effect of coat color on milk production and reproduction in Holstein cows. There was no difference (P >. 10) in the amount of milk produced during the first lactation or length of the first lactation among cows with 25, 26-50, 51-75 or >75% black hair coat (BHC). Cows with > 75% BHC had more conceptions (P < .009) in January and February and fewer in March, April and June than cows with < 75% BHC (-2 = 25.16). Light colored cows ( 25% BHC) had shorter (P < .03) calving intervals than darker cows (> 25% BHC; 464 ± 14 vs 495 ± 5 d, respectively) independent of month of calving. These results indicate that milk production of Holstein cows in the tropics is not influenced by coat color but reproduction may be. Cows with more black surface area may be more susceptible to detrimental effects of heat stress because more solar radiation is absorbed as heat.

Suggested Citation

  • Godfrey, R.W. & Hansen, P.J., 1994. "Effects Of Coat Color On Production And Reproduction Of Dairy Cattle On St. Croix," 30th Annual Meeting, July 31-August 5, 1994, St. Thomas, U.S. Virgin Islands 258758, Caribbean Food Crops Society.
    • Handle: RePEc:ags:cfcs94:258758
    DOI: 10.22004/ag.econ.258758
    as

    Download full text from publisher

    File URL: https://ageconsearch.umn.edu/record/258758/files/30_24.pdf
    Download Restriction: no
    File URL: https://libkey.io/10.22004/ag.econ.258758?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ags:cfcs94:258758. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: AgEcon Search (email available below). General contact details of provider: http://cfcs.eea.uprm.edu/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.