Herbage wrapped silage and grass wrap film

For a long time, farmers in our country have used crop straw as their herbivorous feed for livestock. However, with the rapid development of China's animal husbandry, the continuous adjustment of the planting structure, the further implementation of the strategy for the development of the western region, the gradual implementation of the national ecological construction plan, and the demand for domestic and international markets, the rapid development of the The area is increasing day by day. However, the storage problems that accompany it have also become increasingly prominent.

Traditional silage is pit storage or tower storage. Traditional methods of silage due to tightness, excessive oxygen in the straw will prolong the aerobic stage, protein denaturation, a large number of soluble carbohydrates are consumed, digestible protein is greatly reduced, thus greatly reducing the quality of the feed.

With the development of science and technology, people have more and more clearly understood the mechanism of fermentation modulation of silage, and invented forage film wrapped silage. The principle is to use high-density compaction and binding of various harvested fresh green grasses, corn straw, and other green plants, and then wrap them in a wrap film to create an optimal fermentation environment. Pastures thus bundled and wrapped are in a sealed state. Under anaerobic conditions, the PH value will drop to 4 after 3 to 6 weeks. At this time, all the micro-physical activities will stop and eventually the lactic acid will be finished. Fermentation biochemical process, so as to achieve a satisfactory effect of silage, and can be long-term and stable preservation, can be stored in the field for 1-2 years.

For grasses or straws encased in good pasture film, the following standards should be met: PH 4, water 50%-65%, lactic acid 4%-7, acetic acid less than 2.5%, butyric acid less than 0.2%, N- NH3 accounts for 5%-7% of total nitrogen and ash content is less than 11%. Using this technology silage can provide high-quality feed for livestock all year round.

The method of enclosing silage with pastoral film is mainly round bale silage. The bales are first compacted with a round bale baler to form a cylindrical bale, and then the bale wrapper is used to bind the bale tightly with a stretch film for silage. wrap up. The greatest advantage of the forage film wrapping silage is that the silage quality is good. Due to the rapid production speed, the silage is squeezed by the high density and the sealing performance is good. All the lactic acid can be fully fermented. To confirm its effect, Inner Mongolia Hulunbeier Grassland Center tested 53.75% of silage pod bale samples submitted by Ewenkiqi Bureau of Animal Husbandry for analysis: Crude protein content was 14.37% (4 percentage points higher than hay), crude fat 2.52% Crude fiber was 19.87% (7.68% lower than hay), ash was 7.55%, calcium was 1.1%, and phosphorus was 0.14%. According to the on-the-spot feeding test, 10 silage-fed cattle were used to feed 10 calves not only in the cold season of September-December in Inner Mongolia, but on average, they gained 0.63 kg daily; while the average daily weight of cows fed hay was reduced. Weight 0.1kg. Feeding beef cattle under 2 years of age, with an average weight gain of 50kg per head. From July onwards, dairy cows were fed with silage fodder. The milk production peak was extended for 2 months, and the average daily milk production increased by 5-7 kg.

Thanks to its considerable social and economic benefits, 20% of pasture silage in European countries is now wrapped in a wrap. The application rate in Sweden is even 40%. The annual growth rate of grass wrap film is 15 in Europe and North America. %. Wrapped silage has become an inevitable trend in China's pasture silage. The herbage film used for the silage technology has also become a very promising project for packaging film manufacturers in China because of its potentially huge market demand. With the support of the relevant national ministries and commissions, Hebei Baoshuo Group has introduced advanced technology from the United States Badenfield company with an annual output of 4,000 tons of equipment, has completed the preliminary trial phase of pasture film, and gradually mass production and steady promotion. It is believed that this kind of new-type plastic packaging material that benefits the country and the people will be widely used in the animal husbandry industry in China and will contribute to the adjustment of the industrial structure of agriculture.