Effect of Feeding of Hydroponic Maize Fodder on Milk Production in Rathi Cows

Sixteen lactating Rathi cows (BW 340–360 kg with average milk yield of ∼5–6 kg/d) were distributed in four equal groups in order to study the effect of feeding of hydroponic maize fodder on milk production during a 120 d feeding trial. The animals in group CON (control) were fed 4.5 kg concentrate mixture (CP 20%). In group HM-25, 75% of CP was met through concentrate mixture (3.375 kg) and rest through hydroponic maize fodder (7.0 kg), while, animals were fed 14 kg hydroponic maize fodder, 2.25 kg concentrate mixture in group HM-50. In HM-75 group, the animals were fed 21 kg of hydroponic maize fodder, 1.125 kg concentrate mixture. Additionally, all the cows were fed 4 kg groundnut straw and wheat straw ad libitum. Results indicated that the feed (DM) intake was significantly higher (P<0.01) in the CON group in comparison to group HM-75. The DCP, TDN and NR values were significantly (P<0.01) higher in HM-75 than CON group. Average daily milk yield and fat corrected milk (FCM) yield were significantly (P<0.05) higher in group HM-75 in comparison to the control group CON. The fat and total solids contents in the milk were significantly (P<0.05) higher in group HM-75 in comparison to group CON and HM-25 groups with no variation in the SNF, protein and lactose contents. In conclusion, hydroponic maize fodder can be fed to the lactating cows by replacing up to 75% CP of concentrate mixture with improved milk production.