My recommend is the study of attached file with the most precise. Of course with more attention on reference list and literature section. Synchronization is a concept; oftentimes animal is determining how consumption of nutrients such as nitrogen and energy sources in the rumen, no feed composition with regards to degradability rates of carbohydrate and nitrogen from ration ingredients.
every animal like dairy cow need adequate Kcal for good growth and performance. the carbohydrate source is important for immediate and basal energy and the protein source is complement with the energy and to supply essential amino acid for growth and development. synergy is very critical to get good performance in dairy cow.
The bottom line is maintainance requirements in terms of DE/Dcp, then increase the feed at the feed with the desired milk yield. A maintenance Dcp of 5percent is practical but increase d to 17_ 20percent of the daily ration.
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