Straw composite granular feedstuff and preparation method thereof

Abstract

The invention discloses a novel composite stalk pelletized feed, which comprises (by weight percent): stalk powder 60-90%, enzyme preparation 0.1-1%, synergistic agent 2-10%, protein source feed stuff 4-20%, lime stone 1-5% and ultramide 1-5%.

Description

technical field [0001] The invention relates to a feed, in particular to a composite granular feed prepared from straw powder as a main raw material and a preparation method thereof. Background technique [0002] my country is extremely rich in straw crude fiber resources, with an annual output of 570 million tons, which is equivalent to 50 times the annual amount of grass in northern grasslands, accounting for 20%-30% of the world's total straw output. However, the part of straw used as feed is less than 10% of the total output (among them, silage and alkalization account for 2.8% of the output, the fermented part accounts for about 1.3%, and the part fed directly or chopped or crushed is less than 6%). The country's straw utilization rate can reach 20%. At present, a large number of crop straws in our country are mainly burned or piled randomly, which not only pollutes the environment, causes fires, but also causes a great waste of resources, and the production of pasture...

AI Technical Summary

Problems solved by technology

At present, a large number of crop straws in my country are mainly burned or piled randomly, which not only pollutes the environment, causes fires, but also causes a great waste of resources, and the forage output as the main feed source of herbivorous livestock can no longer meet the needs of the development of herbivorous livestock.

[0003] Crop stalks have always been regarded as unconventional roughage by the animal nutrition community because of the following disadvantages: ① low crude protein content, lack of necessary nutrients, and poor quality; ② high crude fiber content, which is not easy to be absorbed by livestock Digested lignin; ③The content of nitrogen-free extracts is high, and the main components are hemicellulose and polyuronic acid; ④Some straws are rough and hard, and their palatability is poor, so the nutritional value of straws directly used as feed is very low, and the digestibility is only low. 25-35%, the feed intake is only about 60% of high-quality forage; ⑤ The utilization rate of metabolizable energy is poor, 65-80% of DM in the straw contains energy. In theory, if the energy in the straw can be fully utilized, 1kgDM Just can produce 10MJ metabolizable energy, but because the digestion and utilization rate of straw is only 40%--50%, only 60% of the energy can be utilized by animals

⑥ The feed density of crop straw is low, about 200 kg per cubic meter (feed density is about 0.2), which is not easy to transport and store

However, the nutritional value of the straw pellets is very limited, lacks the necessary nutrients for ruminant livestock in each growth stage, and has poor palatability, thus limiting the promotion and application of the straw pellet feed

Although straw briquetting or granulation technology is a great progress in straw utilization technology, its biggest defect is that it cannot organically combine straw utilization with other feed materials to comprehensively improve the utilization rate of various feed materials.

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