At present, there are many kinds of concentrated feed produced in our country, and the quality is also different, some of them are even substandard fake products. Therefore, it is necessary to purchase concentrated feed produced by manufacturers with reliable product quality. At the same time, the corresponding products should be selected according to the variety, use and growth stage of pigs. The concentrated feed for other animals should not be used for pigs or for growing and finishing pigs.
According to the requirements of the state for the supervision and administration of feed product quality, all qualified and reliable concentrated feed must have product labels, instructions, certificates of conformity and registered trademarks. Only by mastering these basic knowledge can we not be deceived. In addition, the quantity of a purchase should not be too much to ensure its freshness and palatability.
Concentrated feed cannot be fed directly
Concentrated feed is a kind of uniform mixture composed of protein feed, mineral feed, microelement, vitamin, amino acid and non nutritive additive in a certain proportion, and then combined with a certain proportion of energy feed, it becomes a compound feed with basic balance of nutrition. Generally, the crude protein content of concentrated feed for pigs is more than 35%, and the mineral and vitamin content is more than three times of the demand of pigs. Therefore, it can not be fed directly, but can only be fed after it is combined with energy feed in a certain proportion. There is no need to add any additive during the mixing. When feeding, it should be evenly mixed with the crushed energy feed, and it should be fed with raw dry powder or cold water mixed with wet feed, and enough clean water should be provided.
Calculation method of the ratio of concentrated feed and feed material
The proportion of concentrated feed and feed raw materials produced by pig farmers must be reasonable in order to achieve nutritional balance. Usually in the concentrated feed product manual, it is also recommended to have the proportion with common feed raw materials, which can be used by reference. However, the commonly used feed materials recommended are not consistent with the self-produced feed materials of the farmers, so it is necessary to be able to calculate the proportion. The diagonal method is usually simple and easy to master. Taking 20-60 kg body weight growing finishing pig as an example, this calculation method is explained.
For example, the farmers have purchased 38% of the pig's concentrated feed containing crude protein, and there are three kinds of feed materials, i.e. corn, wheat bran and bran cake, which are produced by themselves. The calculation method and steps of the proportion of these three feed materials are as follows: the first step is to determine the nutritional level of the compound feed, the nutritional requirement of the growing pigs is, the digestible energy is 12.97 MJ / kg feed, and the crude protein is 16%; The second step is to list the nutrient content of the self owned feed raw materials; the third step is to preliminarily determine the approximate proportion of concentrated feed, about 20%, according to the local feed raw materials and previous experience, and then calculate the digestive energy of the energy feed to be prepared.
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