Dietary Intake and Nutritional Characteristics in Wild American Lobsters (Homarus americanus)

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Abstract
Nutrient and essential amino acid analyses of the stomach contents of wild adult American lobsters (H. americanus) collected from offshore and inshore populations indicated lobsters consumed varying nutrient levels according to their stage of molt. Soft-shell lobsters ate a higher level of mineral constituent. The location of the animal had no effect on the nutrient intake level. The essential amino acid composition of the protein in the stomach remained the same throughout the molt cycle but indicated a change in protein source with the location of the animal. The relationship between crude protein and gross energy was constant suggesting its importance in the nutrition of the lobster. A basal level of nutrient constituents for ration formulation was recommended for lobster nutrition.

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