The main component of straw is crude fiber, and animals (including ruminant animals) themselves cannot secrete enzymes that degrade crude fiber. However, the digestibility of crude fiber by cattle and sheep reaches 50% to 90%, which is achieved by the proliferation and metabolism of microorganisms in the rumen. The pigs are rumen-free, and the digestibility of crude fiber is only 3% to 25%, which is mainly achieved by the activity of microbes in the cecum and colon. If a large amount of straw powder is added to the pig feed, not only the crude fiber contained therein cannot be digested, but also the digestibility of corn and soybean meal in the feed can be reduced. Tests have shown that for every 1 percentage point increase in the crude fiber content of pig feed, the digestibility of organic matter in feed decreases by 1.92 to 1.35 percentage points. Therefore, the crude fiber content in pig feed should be controlled. General piglets should not exceed 4%, growth and finishing pigs should not exceed 6% to 8%, male and female sows should not exceed 10% to 12%.
Therefore, straw-fermented pigs are misleading commercial hype, and pig farmers should not be fooled.
Therefore, straw-fermented pigs are misleading commercial hype, and pig farmers should not be fooled.
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