Calories in codfish
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Caloric Content of Codfish: An Overview
Nutritional Composition and Caloric Value of Codfish
Codfish, specifically Atlantic cod (Gadus morhua), is a lean fish known for its low-fat content and high protein levels. The caloric content of codfish is primarily derived from its protein and minimal fat content. Studies have shown that the gross energy of codfish diets can vary, but typically, the energy content is around 4,900 to 5,059 kcal/kg, with protein making up a significant portion of this energy1 2.
Protein and Fat Contributions to Caloric Content
In feeding experiments, codfish were provided diets with varying proportions of protein, fat, and carbohydrates. Optimal growth was observed with diets consisting of approximately 60% protein, 25% fat, and 15% carbohydrates, which translates to a balanced caloric intake from these macronutrients1. The protein retention in codfish is relatively high, with studies indicating that 26% to 29% of protein is retained, compared to 50% to 60% of fat, except in cases of very low-fat diets1.
Impact of Diet on Fatty Acid Composition and Caloric Density
The fatty acid composition of codfish can significantly influence its caloric density. When codfish were fed diets with different fat contents, their body fat and fatty acid profiles changed accordingly. For instance, codfish fed a low-fat squid diet (2.0% fat) showed a significant change in fatty acid patterns within three weeks, reflecting the low-fat content of the diet. Conversely, when switched to a high-fat mackerel diet (15.7% fat), the total body fat of the cod increased, and their fatty acid composition shifted to mirror the high-fat diet3. This indicates that the caloric density of codfish can be modulated by dietary fat intake.
Conclusion
Codfish is a lean source of protein with a relatively low caloric content derived mainly from its high protein and low-fat composition. The caloric value of codfish can be influenced by its diet, particularly the fat content, which affects both the body fat and fatty acid composition of the fish. Understanding these dietary impacts is crucial for optimizing the nutritional value and caloric content of codfish in various dietary applications.
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Most relevant research papers on this topic
Feed optimization in atlantic cod (Gadus morhua): Fat versus protein content in the feed
Optimal growth for cod can be achieved with a feed containing 60% protein, 25% fat, and 15% carbohydrate, fed every day for optimal growth.
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