Table 1 Herd size, farming system (Free stall: FS; Cubicle with earthen paddocks: CEP), average daily milk yield per cow, dry matter intake (DMI), contaminated feeds in the ration, inclusion rate of clinoptilolite (% dry matter; % DM) and grouping according to the particle size of clinoptilolite (SC: <0.15 mm, LC: <0.8 mm) in the 15 farms (F1 to F15) included in the study
Group | Farm I.D. | Herd Size | Farming system | Average daily milk yield (kg) | DMI (kg) | Clinoptilolite inclusion rate (% DM) | Contaminated feeda |
|---|---|---|---|---|---|---|---|
SC | F1 | 220 | CEP | 32 | 20.6 | 0.97 | Corn silage |
SC | F2 | 246 | CEP | 30 | 20 | 1.00 | Corn silage |
SC | F5 | 125 | CEP | 30 | 20 | 1.00 | DDGSb |
SC | F6 | 172 | FS | 33 | 20.5 | 0.98 | Maize grains & cottonseed meal |
SC | F8 | 50 | FS | 25 | 18.8 | 1.06 | Maize grains |
SC | F9 | 87 | FS | 27 | 19.2 | 1.04 | Maize grains |
SC | F10 | 120 | CEP | 31 | 20.2 | 0.99 | Maize grains |
SC | F11 | 136 | CEP | 36 | 22.0 | 0.91 | Maize grains |
SC | F13 | 175 | FS | 29 | 19.9 | 1.01 | N/Dc |
LC | F3 | 180 | FS | 28 | 19.5 | 1.03 | DDGSb |
LC | F4 | 146 | FS | 33 | 20.8 | 0.96 | Corn silage |
LC | F7 | 163 | CEP | 29 | 19.7 | 1.02 | Maize grains |
LC | F12 | 90 | FS | 35 | 21.8 | 0.92 | Maize grains |
LC | F14 | 74 | FS | 26 | 18.7 | 1.07 | N/Dc |
LC | F15 | 150 | FS | 33 | 20.2 | 0.99 | N/Dc |