کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2449224 1554031 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigations on the water intake of growing bulls
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Investigations on the water intake of growing bulls
چکیده انگلیسی

The voluntary water intake was evaluated in 62 growing Holstein bulls (mean body weight range = 193 to 550 kg) during a whole fattening period. The diet was composed of corn silage and concentrates. Water was offered for ad libitum consumption. A total of 17,772 measurements of water intake were recorded over 282 days. The average daily water consumption was 18 kg/animal (S.D. = 6.7 kg). Applying a multiple regression analysis to the data set yielded the following equation: voluntary water intake (kg/day) = − 3.85 + 0.507 ⁎ average ambient temperature (°C) + 1.494 ⁎ dry matter intake (kg/day) − 0.141 ⁎ roughage part of the diet (%) + 0.248 ⁎ dry matter content of roughage (%) + 0.014 ⁎ body weight (kg). The incorporation of the variables body weight gain, relative humidity, maximum ambient temperature, Na intake, and K intake into the equation did not increase the accuracy of the prediction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Livestock Science - Volume 103, Issues 1–2, August 2006, Pages 186–191
نویسندگان
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