1. Simple assessment of silage quality
Silage matures 40-60 days after the silage has produced enough lactic acid to open the cellar. After the open pit, the quality of the silage can be easily assessed, and the quality of the silage is mainly determined based on color, smell, taste and texture.
Excellent green or yellowish green color, aromatic flavor, gives people a sense of comfort. Wet, soft, stem and leaf flowers can be clearly distinguished and not sticky.
Medium yellowish brown or dark green, pungent acetic acid, aroma. Soft, watery, stem and leaf flowers can be distinguished.
Low black or brown, pungent, pungent, musty, rotten, sticky, agglomerated, or overly dry, indistinguishable structures.
2. Prevent secondary fermentation
Open cellar area should be based on the same amount of feed for the day. If moldy, dark, rancid odor is found after opening the cellar, it should be discarded. From one end of the pit from top to bottom layer by layer, take and seal the pit.
After opening the pit to prevent the secondary fermentation of silage. The so-called secondary fermentation refers to the moldy phenomenon that occurs in the silage due to the increase in the temperature inside the silo after silage feeding. Silage with good quality is susceptible to secondary fermentation. After the secondary fermentation occurs, the sugar content of the silage can be lost by 10% to 24%. If there is a large amount of mold activity and mildew or nitrite is produced, feeding cattle and sheep will cause a certain degree of harm.
The secondary fermentation started after the silage had been exposed to air after opening. Therefore, the size of the opening should be determined according to the number of cattle raised and the feed intake, and the opening should be as small as possible. After each silage is removed, the surface is covered with a plastic film so that it is not ventilated. If silage that has undergone secondary fermentation has not been able to be eaten for a while, the upper-heated feed should be packed into a sealed plastic bag and fed as soon as possible. The lower silage is sprayed with propionic acid at a dose of 0.5-1 liters per square meter and covered with a plastic film to effectively inhibit the secondary fermentation of silage.
3. Rational feeding of silage
Silage contains a large amount of organic acids and has a laxative effect, so cows should not be fed more during the later stages of pregnancy. Feeding alone is not good for cattle and should be used in combination with carbohydrate-rich feed and hay to increase the utilization of nitrogen by the rumen microorganisms. Dairy cows have an adaptation process to silage, and their dosage should be gradually increased. Adult cows generally have a daily feed of 15-25 kg, and the maximum daily feed should not exceed 30 kg. After the frozen silage is thawed and then fed, how much of it is used every day, it cannot be used in large quantities at one time, and it cannot be fed to dairy cows after it has become moldy.
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