Protein levels in concentrate from Curraleiro Pé Duro cows: intake, digestibility, production and milk composition
The objective of this study was to evaluate the effect of increasing dietary protein on intake, nutrient digestibility, production and milk composition of primiparous Curraleiro Pé-Duro cows kept in a rotational grazing system in mombaça grass (Megathyrsus maximum). Four newborn animals were used, in a Latin square design, supplemented with 3 kg of concentrated feed containing 16, 18, 20 and 22% CP. Milking was carried out twice a day and samples of milk, ingested food, feces and blood were collected during the test. An increase in protein intake and digestibility of crude protein and ether extract was observed as the percentage of protein in the diet increased. The digestibility and consumption of other nutrients were not influenced by the level of protein in the diet. The animals supplemented with 20 and 22% of CP had a higher amount of glucose in the blood. Milk protein increased with 18% CP supplementation. Lactose and total milk solids increased from 20% of CP in the diet. However, increasing the protein content in the diet had no effect on milk production.
| Main Authors: | , , , |
|---|---|
| Format: | Digital revista |
| Language: | por |
| Published: |
Asociacion Latinoamericana de Produccion Animal
2023
|
| Online Access: | https://ojs.alpa.uy/index.php/ojs_files/article/view/2840 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|