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Estimation of sow milk nutrient output
1Station de Recherches Porcines, Saint-Gilles, Institut National de la Recherche Agronomique, L'Hermitage, France.
Journal of Animal Science
|December 1, 1989
Summary
Milk nutrient intake strongly correlates with piglet growth rate and body composition. Accurate prediction models for milk production were developed using piglet average daily gain (ADG) and body composition analysis.
Area of Science:
- Animal Science
- Nutritional Physiology
- Swine Production
Background:
- Understanding the relationship between maternal milk production and offspring growth is crucial for optimizing livestock management.
- Accurate assessment of nutrient transfer from sow to piglet is essential for piglet performance and carcass quality.
Purpose of the Study:
- To quantify the relationship between milk nutrient intake and piglet growth rate and body composition.
- To develop predictive models for milk nutrient output based on piglet performance metrics.
Main Methods:
- Ten replicates of littermate gilts were used over a 21-day lactation period.
- Milk production was measured using the weigh-suckle-weigh method; piglet heat production was measured via the respiratory quotient (RQ) method.
- Piglet body composition was determined post-weaning through slaughter analysis.
Main Results:
- Milk nutrient output was closely related to piglet weight gain and body weight (R² = .80–.96).
- Predictive models for milk dry matter, energy, and nitrogen output were established using piglet average daily gain (ADG) and a correction factor for energy gain discrepancies (R² = .87–.90).
- Inclusion of piglet weight gain composition further improved these predictive relationships (R² = .93–.97).
Conclusions:
- Milk nutrient production is a significant determinant of piglet growth and body composition.
- Predictive models incorporating piglet ADG and body composition analysis offer reliable methods for estimating milk nutrient output in swine lactation.