Topics:
Animal Nutrition, Animal Refresher
Fish Meal Limit in Pig Diets
Fish meal should not be fed more than ______ in diet of pig otherwise fishy flavor may develop in pork:
- 5%
- 10% — Correct Answer
- 15%
- 20%
Explanation:
Correct Answer: 10%
Fish meal is an excellent protein source, rich in lysine and methionine. However, it contains trimethylamine oxide (TMAO), which is converted to trimethylamine (TMA) by microbial action. If fish meal exceeds 10% of the pig's ration, TMA accumulates in adipose tissue causing an unacceptable fishy taint in the pork.
Fish Meal — Key Nutritional Facts
| Parameter | Value/Detail |
|---|---|
| CP content | ~60–65% |
| Rich in | Lysine, Methionine, Ca, P, B₁₂ |
| Max level in pig diet | 10% (beyond this → fishy flavour in pork) |
| Special note | Contains thiaminase (anti-Vit B₁) in raw form — must be heat-treated |
Protein Sources — Animal Origin
- Fish meal, meat meal, feather meal, blood meal: protein-rich concentrates (>20% CP, <18% CF)
- Blood meal: richest in Lysine; deficient in Isoleucine
📚 About this Topic — Animal Nutrition
This multiple choice question is from Animal Nutrition, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Nutrition to strengthen your preparation.
