Abstract

A comparision was made of intestinally available rumen undegradable intake protein (IAUIP) of total mixed rations and the neutral detergent insoluble crude protein (NDIP) to test if NDIP could be used as a simple method for estimating IAUIP content. The IAUIP content of six total mixed rations were determined and the results were regressed on the NDIP content of the same rations. Prediction of IAUIP by use of the NDIP content yielded a significant linear relationship (IAUIP = 0.565 + (NDIP × 0.8987); r 2 = 0.60). Correction of the NDIP to account for acid detergent insoluble crude protein (ADIP) content weakened the relationship (IAUIP = 1.5100 + [(NDIP − ADIP) × 0.9891]; r 2 = 0.53). Furthermore, intestinally unavailable rumen undegradable intake protein (IUUIP) values were regressed on the ADIP content and showed a low linear relationship (IUUIP = 0.2536 + (ADIP × 0.9803); r 2 = 0.16). These data suggest that NDIP content of TMRs can be used to estimate the IAUIP content of feeds and ADIP content of rations is a poor indicator of the amount of intestinally unavailable UIP in total mixed rations.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.