Shade and Wind Barrier Effects on Summertime Feedlot Cattle Performance

  • Mader T
  • Dahlquist J
  • Hahn G
 et al. 
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Abstract

In each of three summertime trials conducted over consecutive years, approximately 110 predominantly black and black-white-face steers were blocked by weight and randomly allotted to one of 16 pens in a 2x2 factorial arrangement of treatments. Factors consisted of cattle being fed in facilities with or without wind barriers and with or without shade. Steers were fed dry-rolled corn-based diets (1.43 Mcal/ kg, NEg). Mean starting date and days on feed were June 26 and 79, respectively. In unshaded areas, temperature and humidity averaged 21.6 degrees C and 77.9%, and the blackglobe-humidity index (BGHI) at 1500 averaged between 84.0 and 89.1. Each of four 6.1-x6.1-m structures (mean height = 3.4 m) with white steel roofs provided shade (2.65 m2/steer) for two pens. In facilities with wind barriers provided, airflow was reduced from the north and northwest by a 25-m-wide shelterbelt containing six rows of trees. For cattle fed in pens with wind barriers, shade increased (P

Author-supplied keywords

  • Environment
  • Feedlots
  • Shade
  • Steers
  • Summer
  • Wind Protection

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Authors

  • T. L. Mader

  • J. M. Dahlquist

  • G. L. Hahn

  • J. B. Gaughan

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