LIMA Fish Feed Machine,Chicken Feed Machine
At prnt, there is no uniform standard for the quality measurement of pellet feed. In addition to the general quality of feed, the quality of pellet feed is generally considered to include the following aspects: sensory indicators, pulverization rate, hardness, moisture content, durability, test weight, etc. For fish shrimp feed, it is also necessary to determine the stability, water resistance, settling and dissolution of its water. 1. Sensory indicators The size of the pellet feed should be uniform, the shape is uniform, the surface is basically smooth, the color is uniform, and there is no mildew, deterioration and peculiar smell. 2. Determination of pulverization rate The pulverization rate refers to the percentage of the amount of powder produced by the pellet feed during storage and transportation and its total amount. It is required that the powder of the primary product does not exceed 9%, and the particle powder of the secondary product does not exceed 14%. 3. For the determination of the durability index of pellet feed, take 1kg of pellet feed, and select the specified Standard sieve, sieve the original sample by hand, the particles on the sieve that fail to pass the sieve are the sample, take a 200 g sample on the durability index tester, rotate the sample sieve at a speed of 50 r/min for 10 min, take out The sample is sieved through the specified sieve again, and the sieve on the sieve is weighed. 4. Determination of the hardness of pellet feed The hardness of pellet feed not only affects the pulverization rate and durability index, but also affects the palatability. The principle of assay is based on the size of the particulate feed pressure strength. Common grain hardness meter and SYT-20 particulate feed hardness agent determination. 5. Determination of the stability (water resistance) of fish and shrimp bait in water for fish and shrimp The pellet feed should have the characteristics of low solubility and suspension, and for this reason, certain stability in water is required. Weigh 10 g of pelleted feed, and place it in a bowl-shaped sieve with a sieve hole of 0.5 mm (sieve hole diameter is 7 cm and sieve height is 3 cm). Next, place the beaker in a water bath at 28¡ãC, and ventilate from a 3 mm perforated glass tube near the bottom of the beaker under the sieve, with a ventilation rate of 40 to 60 air bubbles per minute, so that it can be stirred gently and continuously. In the tested sample, the small particles of the feed collapsed fell from the sieve holes. After 2 hours of continuous, the residual feed on the screen is removed, and the oven of oven at 105 ¡ã C is taken to constant, and the mixed feed without putting water is taken, and the water content is measured in the same method. Do 3 parallel tests for each sample, take the average value, and match theThe stability of the feed in water is expressed in the dissolved rate (%). 6, Particle Feed In Determination Determination Serving Animal Antariocene Deactivation is to refer to the amount of starch in starch and all starchThe percentage of ratio. beta; – Amylase at a suitable pH and temperatures, the starch is quantitatively converted into reducing sugar at a certain period of time, and the transformed sugar amount is proportional to the degree of gelatinization of the starch.The amount of starch can be calculated from the potassium content of ferocyanide.
