Related Experiment Video
Updated: Jan 29, 2026
05:55
How to Create Conditioned Taste Aversion for Grazing Ground Covers in Woody Crops with Small Ruminants
Published on: April 30, 2016
7.7K
Nitrogen Source-Carbohydrate Synchronization in Ruminant Nutrition: A Systematic Review.
Leilson Rocha Bezerra1, Juliana Paula Felipe de Oliveira2, Antônio Fernando de Melo Vaz1
1Department of Animal Science, Federal University of Campina Grande, Patos 58708110, Paraíba, Brazil.
Animals : an Open Access Journal From MDPI
|January 28, 2026
Summary
Optimizing ruminant diets by synchronizing nitrogen sources with carbohydrate fractions boosts microbial protein synthesis and feed efficiency. Controlled-release urea pairs best with slowly degrading carbohydrates for improved ruminant nutrition.
Area of Science:
- Ruminant Nutrition
- Animal Science
- Agricultural Chemistry
Background:
- Microbial protein synthesis and ruminant performance depend on synchronizing nitrogen (N) and carbohydrate (CHO) availability.
- Understanding N source-CHO fraction interactions is key for efficient ruminant production.
Purpose of the Study:
- To systematically review and meta-analyze the impact of N source and CHO fraction synchronization on ruminant nutrition.
- To evaluate different N sources (true protein, urea, controlled-release urea, bypass amino acids) and CHO fractions (soluble, fibrous, non-fibrous, Van Soest).
Main Methods:
- Systematic review following PRISMA 2020 guidelines.
- Literature search across major scientific databases (PubMed, ScienceDirect, Web of Science, Scopus).
- Qualitative synthesis of 164 studies and quantitative meta-analysis of 89 studies.
Main Results:
- Synchronization effectiveness varies by N source-CHO combination; controlled-release urea excels with slowly degrading CHO, while conventional urea suits rapidly degrading CHO.
- Optimal synchronization improved microbial protein synthesis by 18-34%.
- Reduced urinary N excretion by 12-28% and enhanced feed efficiency by 8-15% were observed.
Conclusions:
- Evidence-based recommendations for precision nutrition strategies in ruminant production.
- Highlighting the importance of matching specific N sources with appropriate CHO fractions for improved animal performance and environmental sustainability.
- Controlled-release urea offers a promising strategy for enhancing ruminant productivity through optimized N synchronization.
Related Concept Videos
01:15Carbohydrates: Dietary Sources and Requirements
1.7K
Carbohydrates are predominantly obtained from plant sources. With the exception of lactose found in milk and insignificant glycogen amounts in meat, most consumed carbohydrates have plant origins. Monosaccharides and disaccharides, or sugars, can be sourced from fruits, honey, milk, sugar cane, and sugar beets. Grains and vegetables are rich in the polysaccharide starch. Two types of polysaccharides provide fiber: cellulose, which is abundant in many vegetables, forms undigestible roughage or...
1.7K
01:49The Nitrogen Cycle
60.1K
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
60.1K
02:11The Roles of Bacteria and Fungi in Plant Nutrition
47.2K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
47.2K
01:44What are Carbohydrates?
198.2K
Overview
198.2K
03:25Chemistry of Carbohydrates
90.4K
Carbohydrates are an essential part of the diet in humans and animals. Grains, fruits, and vegetables are natural sources of carbohydrates that provide energy to the body, particularly through glucose, a simple sugar that is a component of starch and an ingredient in many staple foods. The stoichiometric formula (CH2O)n, where n is the number of carbons in the molecule represents carbohydrates. In other words, the ratio of carbon to hydrogen to oxygen is 1:2:1 in carbohydrate molecules. This...
90.4K
00:57Carbohydrate Digestion
122.3K
Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
122.3K