National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
In the present study 24 high milk yielding crossbred cows were selected based upon their parity, lactation milk yield and body condition score. These cows were divided into four groups keeping 6 cows in each group. Cows in Group 1 and group 2 were fed with ration containing high NEL having 1.50Mcal/kg and designated as high energy control (HEC) and high energy choline (HECh). Cows in Group 3 and Group 4 were fed with ration containing low NEL having 1.26Mcal/kg and designated as low energy control (LEC) and low energy choline (LECh). Cows of HECh and LECh were supplemented with Rumen Protected Choline (RPC) at the rate of 30 g/day. The feeding of the cows was started 21 days before expected date of calving and continued upto 10 days post calving. Body weight and BCS were recorded up to 90 days post calving. Significant difference for average DMI was found between low and high energy groups during pre calving period and average DMI was significantly lower for cows fed on low energy ration. For high energy ration difference was found between HEC and HECh group in average DMI which was significantly lower in HECh group than HEC (P<0.05). DMI after calving increased consistently upto 10 days. There was significant difference (P<0.05) in DMI for different groups after calving and it was significantly higher in groups fed on high energy ration than groups fed on low energy ration. DMI was significantly higher (P<0.05) in the LECh group than LEC group. Significant interaction (P<0.05) was found between number of days post calving and different groups for Dry Matter Intake. For different groups irrespective of the number of days around calving, no significant difference was there in the values of BCS. These results suggested that change in BCS is not affected by RPC supplementation. Significant interaction (P<.05) was found between number of days and different groups for BCS during post calving period. Body weight and BCS loss was less in RPC supplemented groups than control groups so RPC supplementation improves post calving body condition of cows.
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