What is the relationship between pig manure color and feed composition?
The relationship between pig manure color and feed composition
Under normal circumstances, the color of pig manure changes with the composition of feed ingredients. There are several types of feed ingredients that have a significant effect on manure color. First, green feed, such as grass meal, pulped forage, etc., makes pig manure dark brownish-yellow and relatively loose after eating; second, blood meal, blood globulin, or feed high in iron makes pig manure brownish-black after eating, with the degree of darkness related to the level of blood meal or iron in the feed; third, high copper, that is, adding more than 200 ppm of copper sulfate to the feed, makes the manure excreted by pigs pure black and relatively dense; fourth, adding additives such as sodium humate also makes pig manure black, but lighter in color than the manure of pigs fed a high-copper diet.
So in the implementation process of Document No. 1224, from the perspective of pig nutrition, which one is most suitable? Which has the most obvious effect on improving feed intake and growth rate? Anyone interested, come in and discuss.
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The color of the manure does not matter. What matters is not harming the pigs' internal organs and not affecting humans!
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The color of the manure cannot reflect whether the feed is good or bad. Adding high copper, especially adding sodium humate, can only increase costs.
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For the first question, not harming the pigs' internal organs, this is most closely related to medicated feed additives and therapeutic drugs. Whether it is high copper or high iron in the feed, the intestinal absorption by pigs is limited, and it is generally converted into sulfides (ferrous sulfide, copper sulfide) and excreted from the body. As for the second question, it is much more complicated. If high copper and high iron manure is excreted into the environment and used as fertilizer, it has a certain toxic effect on crops and will lead to reduced crop yields. And some drugs are said not to degrade in the pig body either, so whether direct discharge without treatment will cause a large emergence of drug-resistant strains or lead to genetic mutation in bacteria is unknown.
So in the implementation process of Document No. 1224, from the perspective of pig nutrition, which one is most suitable? Which has the most obvious effect on improving feed intake and growth rate? Anyone interested, come in and discuss.
--------------------------------------
The color of the manure does not matter. What matters is not harming the pigs' internal organs and not affecting humans!
--------------------------------------
The color of the manure cannot reflect whether the feed is good or bad. Adding high copper, especially adding sodium humate, can only increase costs.
--------------------------------------
For the first question, not harming the pigs' internal organs, this is most closely related to medicated feed additives and therapeutic drugs. Whether it is high copper or high iron in the feed, the intestinal absorption by pigs is limited, and it is generally converted into sulfides (ferrous sulfide, copper sulfide) and excreted from the body. As for the second question, it is much more complicated. If high copper and high iron manure is excreted into the environment and used as fertilizer, it has a certain toxic effect on crops and will lead to reduced crop yields. And some drugs are said not to degrade in the pig body either, so whether direct discharge without treatment will cause a large emergence of drug-resistant strains or lead to genetic mutation in bacteria is unknown.