Effect of close-up dry period protein level on preparturiental nitrogen balance and lactating performance of primigravid and multiparous Holstein cows

Agriculture & Biology

• dry period (lactation) 79%
• nitrogen balance 70%
• Holstein 53%
• crude protein 47%
• cows 43%
• proteins 21%
• nitrogen retention 13%
• urea nitrogen 12%
• diet 11%
• calving 10%
• urine 9%
• dystocia 7%
• protein supplements 6%
• blood 6%
• nitrogen 6%
• early lactation 6%
• placenta 5%
• parturition 5%

Medicine & Life Sciences

• Period Circadian Proteins 100%
• Nitrogen 61%
• Proteins 22%
• Milk 14%
• Urine 11%
• Diet 10%
• Weights and Measures 9%
• Blood Urea Nitrogen 8%
• Lactation 8%
• Feces 7%
• Urea 7%
• Placenta 7%
• Blood Proteins 6%
• Parturition 5%

Engineering & Materials Science

• Nitrogen 57%
• Proteins 56%
• Nutrition 28%
• Milk 15%
• Urea 13%
• Blood 10%
• Plasmas 10%