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Blood meal is a dry, inert powder made from blood, used as a high-nitrogen organic fertilizer and a high protein animal feed. N = 13.25%, P = 1.0%, K = 0.6%. It is one of the highest non-synthetic sources of nitrogen. It usually comes from cattle or hogs as a slaughterhouse by-product.
Insects as feed are insect species used as animal feed, either for livestock, including aquaculture, or as pet food. As livestock feed production uses ~33% of the world's agricultural cropland use, insects might be able to supplement livestock feed. They can transform low-value organic wastes, are nutritious and have low environmental impacts. [20]
Livestock standards are implemented to maintain both organic standards for consumers and good living conditions for the animals. In order for livestock to be certified organic: Animals must be fed organic food; Growth hormones, promoters or plastic pellets in food are prohibited; Vitamins and minerals are permitted; Animals cannot be overcrowded
Livestock produced in stalls or feedlots are landless and are typically fed by processed feed containing veterinary drugs, growth hormones, feed additives, or nutraceuticals to improve production. Similarly, livestock consume grains as the main feed or as a supplement to the forage based feed.
Cottonseed meal is the byproduct remaining after cotton is ginned, the oil extracted, and the seeds crushed. Cottonseed meal is usually used for animal feed and in organic fertilizers. [1] Cottonseed meal is about 40 percent protein by weight. [2] Compared to cellulose and lignin, proteins decompose rapidly and release nitrogen. [3]
In order for manure to be considered organic it must come from organic livestock or certified organic growers. [12] If organic manure is not available, they are permitted to use non-organic manure as long as the animals have room to roam, are not kept in the dark, and growers abstain from using genetically modified feeds. [12]