PSXVI-3 Individual Water Use Efficiency in Beef Cattle
نویسندگان
چکیده
Abstract Public opinion has focused on animal agriculture being in competition with growing urban populations for land and water resources. With much of the US drought conditions, improving use efficiency is critical sustainability agriculture. To date, little been done to assess cattle. There evidence a positive relationship between intake DMI, but relationships feed efficiencies are likely more complex. Our objectives were understand magnitude variation make comparisons efficiency, as measured by residual (RFI). study utilized yearling bulls, steers, heifers (n=745) summer 2019 2021. Individual intakes determined using real-time system an In Pen Weighing (IPW). Water (RWI), was calculated similarly RFI where expected group regressing average daily metabolic mid-body test weight either ADG or DMI. RWI then actual minus intake. The estimation DMI had greater R2 than when used (.36-.51 vs .31-.35). range off-test about one order smaller (e.g., -0.90 0.73 kg -7.34 8.49 L), indicating variability compared among ADG, that needs be further explored. As strives sustainable, become common measure genetic progress made. appears sufficient trait this feasible.
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2022
ISSN: ['0021-8812', '1525-3163', '1525-3015', '1544-7847']
DOI: https://doi.org/10.1093/jas/skac247.653