Evaluation of Advanced Dairy Systems Shade Tracker (ADS-ST) Fans and Korral Kool (KK) Coolers on a Commercial Dairy in Arizona
نویسنده
چکیده
TAKE HOME MESSAGES: 1. Average milk yield was similar for cows in ADS-ST or KK (91.2 vs. 93.0 lbs/d) pens. 2. 1st lactation heifers in the KK pen tended to produce more milk (83.4 vs. 81.0 lbs/d). 3. The initial investment for the ADS-ST was less ($58,500 vs. $118,067). a. ADS-ST = $234/cow vs. $472/cow for the KK coolers. 4. ADS-ST used less electricity, water and had lower daily costs ($27.30 vs. $33.36). a. Variable cost for ADS-ST = $0.11 vs. $0.15/cow/day for the KK coolers. b. Variable cost for ADS-ST = $0.10 vs. $0.14/cwt for the KK coolers.
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