Related Experiment Video
Updated: Sep 10, 2025
07:02
Providing Meaningful Environmental Enrichment and Measuring Saliva Cortisol in Pigs Housed on Slatted Flooring
Published on: September 30, 2019
7.3K
Predicting the Net Energy Partition Patterns of Growing Pigs Based on Different Nutrients
Wenjun Gao1, Zhengcheng Zeng1, Huangwei Shi1
1State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Animals : an Open Access Journal From MDPI
|August 28, 2025
Summary
This study determined net energy (NE) values for starch, protein, and fat in growing pigs, revealing significant differences in energetic efficiency. Prediction equations for protein deposition (PD) and lipid deposition (LD) were developed using ingredient characteristics for precision nutrition.
Area of Science:
- Animal Nutrition
- Swine Physiology
- Nutrient Metabolism
Background:
- Accurate net energy (NE) values are crucial for optimizing pig growth and feed efficiency.
- Understanding the energetic efficiency and partitioning of nutrients like starch, protein, and fat is essential for precision nutrition.
- Existing models may not fully capture the variations in energy utilization among different feed ingredients.
Purpose of the Study:
- To determine the net energy (NE) values of common energy-supplying nutrients (starch, protein, fat) in growing pigs.
- To investigate the influence of these nutrients on energetic efficiency and NE partition patterns.
- To develop prediction equations for protein deposition (PD) and lipid deposition (LD) based on ingredient characteristics.
Main Methods:
- Two experiments were conducted involving growing barrows fed diets with varying starch sources, soybean oil, or casein.
- Digestibility of gross energy (GE) and organic matter (OM) were measured.
- Metabolizable energy (ME) efficiency for protein and lipid deposition was calculated, and prediction equations for PD and LD were established using nutrient characteristics of 47 ingredients.
Main Results:
- Starches (corn, tapioca, pea) increased GE and OM digestibility compared to a basal diet.
- Soybean oil showed higher ME efficiency for deposition (kj) than starch and casein; casein had higher ME efficiency for PD (pj) than starch and soybean oil.
- Prediction equations demonstrated high accuracy (R² = 0.96 for PD, R² = 0.98 for LD) using ingredient nutrient characteristics.
Conclusions:
- Significant differences exist in the energetic efficiency and NE partitioning patterns among starch, protein, and fat.
- The developed prediction equations offer a novel approach for estimating PD and LD based on ingredient composition.
- This research provides a methodological framework for advancing precision nutrition strategies in swine production.
Related Concept Videos
01:01Production Efficiency
17.0K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
17.0K
02:35Key Elements for Plant Nutrition
21.2K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
21.2K
01:27Parentral Nutrition: Centeral and Peripheral Parental Nutrition
300
Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
300
00:51Energy Budgets
9.7K
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
9.7K
01:29Oxygen Requirements and Growth Patterns
231
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
231