After the female deer is pregnant, the nutrient intake needs to be consumed in addition to its own nutritional needs, but also needs to be provided for the growth and development of the fetus. Undernutrition during pregnancy can cause female deer abortion, stillbirth, childbirth, weakness, or weak birth; excessive nutrition can also result in a decrease in conception rate, obstruction of the reproductive tract by fat, dystocia, breast fat infiltration, and insufficient milk production. Therefore, according to the weight gain situation and the stage of fetal growth and development, pregnant females should be given adequate and reasonable nutrition to provide them with full-priced feed, to ensure adequate amounts of protein, adequate minerals, abundant vitamins and considerable amounts of energy. feed. This will ensure the health of the female deer itself and the normal development of the fetus, as well as a good post-natal lactation capacity. Deer's gestation period can be divided into three stages: embryonic spermatozoa 32 days, fetal prenatal 3 days, and fetal 3 days. After pregnancy, due to endocrine changes and fetal growth and development, the female deer gradually increased in body weight, and the amount of nutrients needed increased gradually. Pre-pregnancy (embryonic phase, pre-fetal phase) is the fetal organogenesis and formation stage, although the growth of small, fetal growth and development is slow, but the key period of prenatal development. Therefore, it is possible to supply high-quality concentrates and slightly larger green fodder, rhizome feed, and dry roughage, so as to improve the conception rate. In late pregnancy (fetal period), the fetus grows rapidly, gains weight quickly, increases in volume, and requires many nutrients. Therefore, in the later stages of pregnancy, the female deer should be supplied with a small volume, high nutritional value, and full palatability feed. The proportion of protein feeds, such as soybeans and fish meal, should be increased in concentrate feeds. Green feed can be fed more carrots as appropriate. At the same time to increase the amount of bone meal and add appropriate trace elements, vitamins, etc., to ensure that the pregnant female deer get enough nutrition, or easy to cause fetal bone dysplasia or female spasm. After the female deer gestated, her temperament was good, her appetite was good, and her drinking water increased. In this period, while feeding full-priced feed and drinking enough water, feeding feed must be regular and quantitative. Generally, the daily feed amount is 15 kilograms, of which 32 kilograms of concentrate, 32 kilograms of green and black feed, 32 kilograms of green feed, three times a day, and green feed must be diversified. It is strictly forbidden to feed moldy, dirty and corrupt feed to prevent female deer abortion. At the same time, it is necessary to prevent excessive rumen enlargement and affect the development of the fetus. Pregnancy female deer should drive exercise regularly every day for 2 hours to promote blood circulation, enhance physical fitness, prevent limb and foot disease and dystocia, but do not forcibly drive out in order to prevent deer group scaring and cause miscarriage. The male and female deer were reared separately, and the deer group was adjusted according to the mating age, body condition, and date of mating, and the female deer in each house should not be excessive to avoid crowding and cause miscarriage. The inside and outside of the shed and the playground must be cleaned and kept clean and dry. The grass should be soft and warm, not less than 23 cm in thickness, and be replaced at regular intervals. In winter, the ice and snow inside and outside the pens should be promptly removed. To create a good living environment for pregnant female deer, keep quiet, avoid all kinds of alarm and harassment, in order to facilitate the health of the female deer and the normal development of the fetus. China Agricultural Network Editor
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