Protein is the foundation of all life activities. All organs (heart, lung, spleen, stomach, kidney, intestine, and genitals), tissues (muscles, bones, nerves, connective tissue, hair, and blood), enzymes, hormones, and products (velvet, milk, semen), etc. Proteins are the main ingredients. Therefore, the deer's growth, development, metabolism, reproduction, and velvet need a large amount of protein to satisfy the renewal and repair of cells and tissues. After the protein in the diet enters the rumen of the deer, the proteolytic enzymes released by the microorganisms (bacteria and ciliates) are hydrolyzed into peptides and amino acids, and most of the amino acids can be further degraded to ammonia, carbon dioxide, and volatilization by the action of bacterial deaminase. Fatty acids. Microorganisms use the produced oxygen, amino acids and peptides to synthesize microbial autologous proteins for use by the body. The feed protein (through-rumen protein) that has not been degraded by microorganisms in the rumen is transferred from the rumen to the abomasum and the small intestine along with the microbial autologous protein, and is hydrolyzed by the proteolytic enzymes secreted by the gastrointestinal tract to amino acids, which are then absorbed and utilized by the small intestine. Calculating the biological value of the general feed crude protein, a 223 kg adult stag needs digestible crude protein 133 g daily after sawing and velvet; 2 (1 year old male sika deer requires concentrate protein level breeding during the velvet period The quantity and quality of protein in the stag's diet can affect the development of male sex organs and semen quality. Therefore, the protein requirement is higher, and the protein level in the concentrate diet is not lower than 36%; Need some energy, but also need protein and other nutrients to maintain the body condition, usually, the protein requirement accounts for 26% of the concentrate feed.The young deer grow rapidly, the protein metabolism is stronger, and the protein deposition in the body is also higher than that of the adult deer. Therefore, the demand for protein is higher, and the deer and deer larvae usually account for 20% of the total protein in the concentrate feed. After the gestation, the female deer rapidly grows, the maternal nitrogen deposits are large, and the weight gain is high. Usually 21 kg weight gain during the entire gestation period.These deposits are mainly completed within 2 months of the second trimester, so the protein should be increased on the basis of maintenance in the later period of pregnancy. The quality of the supply: The female gravid needs 223 grams of protein every day, protein is an important component of milk, 23% of the protein in sika milk is milk, more than double the amount of milk, and the content of lactoglobulin in colostrum is high. It plays an extremely important role in the growth and development of the deer, and not only is it rich in protein, but also has a high content of lysine, leucine, isoleucine and valine. Therefore, in order to meet the needs of lactating deer, To provide enough quality protein, usually 222 litres of female deer need 22 grams of protein each day.In production, the young deer in the growth stage, the stag in the long-antler period, and the pregnant and lactating female Deer has more needs for protein, and deer lack of protein nutrition can lead to deer growth and development, reduced velvet quality, reduced production volume, deer estrus, breeding, fertility decline, fetal dysplasia and deer resistance. The disease is reduced and it is easy to induce various diseases.If the protein in the feed is over-abundant, it can easily cause the deer's heart, liver, kidneys and other organs to become overtaxed, causing the digestive system to become overwhelmed. Disorders and other diseases. China Agricultural Network Editor
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