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Life-stage differences in nutrient digestibility and physiological parameters in Sapsaree dogs
Hyunjin Kyoung1, Kimoon Kim1, Yonggu Kang1
1Department of Animal Science and Biotechnology, Chungnam National University, Daejeon, Republic of Korea.
Frontiers in Veterinary Science
|June 15, 2026
Summary
Life stage significantly impacts Korean Sapsaree dog growth, nutrient digestibility, and metabolic status. Nutritional management and food formulation should consider age-specific needs for optimal canine health.
Area of Science:
- Canine nutrition and metabolism
- Veterinary physiology
- Animal science
Background:
- Nutritional requirements and physiological parameters vary across different life stages in dogs.
- Understanding these variations is crucial for developing age-appropriate diets and health management strategies.
- The Korean Sapsaree breed's specific nutritional needs across life stages have not been extensively studied.
Purpose of the Study:
- To evaluate life-stage differences in growth, fecal parameters, nutrient digestibility, serum biochemistry, and hematology in Korean Sapsaree dogs.
- To provide data that can inform nutritional management and food formulation for this breed.
Main Methods:
- Eighteen healthy Korean Sapsaree dogs were divided into three age groups: puppy, adult, and senior.
- A 7-day adaptation period followed by a 10-day experimental period was implemented.
- Measurements included body weight change, food intake, fecal output, apparent total tract digestibility (ATTD) of dry matter and crude protein, serum biochemistry, and hematology.
Main Results:
- Puppies showed the highest body weight gain, while seniors experienced weight loss.
- Nutrient digestibility, particularly for dry matter and crude protein, was higher in puppies and adults compared to seniors.
- Serum biochemistry and hematology revealed significant differences, with puppies having higher total protein and albumin, and adults showing higher red blood cell counts and hemoglobin levels.
Conclusions:
- Life stage is a critical factor influencing nutrient digestibility and metabolic status in Korean Sapsaree dogs.
- Age-specific nutritional management and tailored food formulations are recommended for optimal health and well-being.
- Further research into breed-specific nutritional requirements across life stages is warranted.
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