(I) Dietary configuration When considering the configuration of rations, the following aspects should be considered: Deer feeding standards stipulate the requirements of deer for nutrients at different stages of growth, development and production. When configuring the diet, it is necessary to use this as a basis and continue to improve it through breeding practices. The current feeding standards are all empirical standards and are for reference only. The feed composition and nutritional value table objectively reflect the nutrient composition and nutritional value of various feeds. It plays an important role in the rational use of feed resources, improving animal production efficiency and reducing production costs. When designing the diet formula, first select the appropriate feed according to various nutrients as stipulated in the reference feed standard, and then consult the feed ingredients and nutritional value table to calculate the designed feed formula, whether or not it meets the requirements of the various nutrient substances in the standard. Claim. When designing the diet formula, according to the actual situation of the local feed resources, a variety of feeds should be reasonably selected, and the feed should be selected as near as possible in order to ensure a balanced and complete nutritional composition throughout the diet. Under the premise of meeting the nutritional needs of deer, quality and cheap feed should be selected to reduce costs. (II) The principle of dietary allocation When formulating diet formulas for deer, it is necessary to meet the deer’s energy needs first, and then consider the needs of nutrients such as protein, minerals, and vitamins. If other nutrients are taken into consideration first, once the energy cannot meet the needs, the composition of various feeds must be readjusted. On the contrary, if the energy needs are met first, and the amount of amino acids, minerals and vitamins is insufficient, each can be used. Additives to add. When configuring the diet, attention should be paid to the compatibility between nutrients and different feeds. The ratio of protein to total energy per kilogram of diet (the ratio of eggs to energy, expressed in grams of 1 megajoule) is appropriate. When the energy is low in the diet, the protein content must be reduced accordingly; when the energy is high in the diet, the protein The content of the diet is also correspondingly increased. Feeding the deer using high-energy low-protein or low-energy high-protein diets will result in feed wastage. The configuration of the diet should be suitable for the deer's physiological characteristics and feeding characteristics, taking into account the relationship between the volume of the diet and the feed intake, the proportion of refined roughage with appropriate, so that with a good diet to achieve a nutritionally reasonable, balanced, moderate volume, palatable Good sex, and reasonable choice of nutrient additives, so that the maximum potential of feed. When configuring a deer's diet, be sure to pay attention to the smell and taste of special feed, so as not to affect the deer's feed intake. The feed used must be fresh, high-quality, mildew-free, and banned from polluted and unclean feed. The use of detoxification measures must be taken for the selection of cakes and feeds, and the dosage should be strictly controlled. Additive feeds must meet the feed-grade standards, with special attention to the content of toxic elements can not exceed the standard. Soybean, soybean cake and other high-quality protein feeds have a high degradation rate in the rumen of the deer, and physical and chemical methods should be considered for protection and treatment to increase the protein content of the rumen and improve its utilization efficiency. In addition, the feed particle size must also be considered in order to predict the speed and digestibility of the feed through the rumen. In general, the diameter of the feed particle size is 121 mm. When rations are allocated, they must make use of existing resources in the region according to feeding practices, feed ingredients, and nutritive value tables, use local conditions, source materials, and choose plants that are of good quality, varied in variety, rich in nutrients, adequate in source, and low in cost. Protein feed. The use of modern new technology to optimize the formula, make it balanced in the nutritional balance of the diet, the full price of high efficiency, high quality, low cost, can produce the desired results. For various additives used in rations, the first step is to use a pre-mixed method to mix them evenly, and then mix them into the whole ration repeatedly to mix evenly. Uneven mixing will cause poisoning accidents. At the same time pay attention to the one-time diet should not be too much, usually under the control of a 23-day match, after eating and mixing, over time will cause some of the loss of nutrients. China Agricultural Network Editor
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