Four kinds of nutrition help to advance the release time of pigs.

The organs of the pigs in the fattening stage are mature, the resistance is enhanced, the pig disease is less, and it is easier to raise. How to improve the daily gain of pigs during this period of fattening? early fattening is the focus of feeding and management. Today, the editor will introduce to you the four nutrients that can not be lacked in the process of pig fattening.

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1. Energy requirement: one of the indispensable nutrient elements in fattening pigs is energy. The higher the energy level is, the faster the daily gain of pigs is, the higher the feed utilization rate of pigs is, but the fat content in pigs is also high, and the lean meat rate is lower. The commonly used energy feed is mainly corn, commonly known as the king of feed. Followed by oats, barley, sorghum and so on.

2. Protein needs: protein contributes to pig muscle growth, and is also the main component of antibodies, hormones and enzymes to maintain pig life activities and normal growth and development. If the amount of protein is not enough for fattening pigs, it not only affects muscle growth, but also affects weight gain. The dietary crude protein level of lean pigs with a dietary crude protein level of 20 ml / 60 kg was 18% for 16 / 60 kg and 14 / 15% for 60 / 90 kg. Soybeans (soybeans) with 36.20% protein content are commonly used protein feed, followed by broad beans, peas, mung beans and other legume seeds, mainly cakes in practical use.

3. The need for minerals and vitamins: pigs in the fattening stage have very strict needs for minerals. The supply of calcium, phosphorus and salt should be considered when matching the diet. In some experiments, corn and soybean cake were used as the basic diet for pigs, and the daily gain of pigs was 720 grams according to the standard addition of salt (0.3%). The daily gain of pigs fed without salt was only 560 grams.

4. Crude fiber needs: a high level of crude fiber will reduce the daily weight gain and feed efficiency of pigs, so the dosage of fattening pigs should not exceed 4% in the early stage and 8% in the later stage.