{"topic_id":"AAFCO_Ch6_fish_oil","category":"aafco","context":"---\ntopic_id: \"AAFCO_Ch6_fish_oil\"\ncategory: \"aafco\"\ntitle: \"AAFCO Ch6 fish oil\"\nlang: en\nsource_document: \"AAFCO Model Pet Food Regulations\"\ncitation:\n  authority: \"AAFCO wp-content/uploads PDF\"\n  title: \"AAFCO Ch6 fish oil\"\n  url: \"\"\n  retrieved: \"2026-07-21\"\n  ref: \"\"\n  doc_type: \"official source\"\n  needs_review: true\nauthority_tier: T1\nauthority_tier_basis: \"T1:std-body\"\nauthority_tier_date: 2026-08-04\n---\nAAFCO Ch6 definition 51.8 Fish Oil is the oil from rendering whole fish or cannery waste (Proposed 1963, Adopted 1964; IFN 7-01-965); menhaden oil is separately listed as the oil extracted from whole menhaden (IFN 7-08-049). The AAFCO definition sets no moisture, impurity or iodine-value specifications — such figures come from supplier specifications. Fish oil is the primary omega-3 source in pet food, supplying EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid); typical sources include menhaden, salmon, sardine and anchovy oils, with EPA+DHA content varying by source (fish body oils typically around a quarter to a third total omega-3, while fish liver oils such as cod liver oil also carry substantial vitamins A and D). Fish oil is highly oxidation-prone, so antioxidant preservation (mixed tocopherols, rosemary extract, or synthetic antioxidants declared as \"used as a preservative\" per AAFCO 33.1) is standard practice; rancidity both destroys omega-3 efficacy and causes digestive upset.\n","sources":["AAFCO wp-content/uploads PDF — AAFCO Ch6 fish oil (retrieved 2026-07-21)"],"source":{"authority":"AAFCO wp-content/uploads PDF","title":"AAFCO Ch6 fish oil","url":"https://www.aafco.org/","retrieved":"2026-07-21","ref":"","doc_type":"official source","source_document":"AAFCO Model Pet Food Regulations","verification_file":""},"source_document":"AAFCO Model Pet Food Regulations","source_file":"","trust":{"authority_tier":"T1","fidelity":"verbatim","license":null,"display_grade":"A"},"tokens_estimated":170,"generated_at":"2026-07-16","tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}