| publication name | EFFECT OF RUMEN-PROTECTED CHOLINE SUPPLEMENTATION ON PRODUCTIVE PERFORMANCE OF LACTATING DAIRY COWS |
|---|---|
| Authors | M.H. Bakr and Sherein H. Mohamed |
| year | 2020 |
| keywords | Rumen, feed conversion, economic efficiency, protected choline, milk yield |
| journal | Egyptian J. Anim. Prod. 57 Suppl. Issue, January (2020):113-120 |
| volume | 57 |
| issue | Suppl. Issue, January (2020) |
| pages | 113-120 |
| publisher | Egyptian J. Anim. Prod. |
| Local/International | Local |
| Paper Link | https://journals.ekb.eg/article_100843_41638d6ce60a9cfb8c72a752e949ed9b.pdf |
| Full paper | download |
| Supplementary materials | Not Available |
Abstract
Nine Holstein lactating cows, with an average live body weight of 550 ±50 kg, at1st to 3rd seasons of lactation, were selected and randomly assigned to three similar groups (three cows each). Cows were used in a lactation study for a total of 12 weeks (4-week prepartum to 8-weeks postpartum) to investigate the effect of feeding two levels of rumen protected choline (RPC) supplementation, at 40 or 50 grams RPC /cow /day, or with no supplement (control) on compare milk production parameters and performance of dairy cows.Results showed insignificant differences (P>0.05) among groups in the digestibility coefficients of DM, OM, CF, EE and NFE, and also in nutritive value as TDN %, while CP digestibility coefficient and nutritive value as DCP% in RPC groups were significantly (P0.05) differences were observed between the groups in their average daily DM and TDN intake, while results of DCP intake were significantly (P