Crude fiber is one of the most important nutrients in ostrich feed, but at present, the ostrich's demand for fiber has not yet been determined. The determination of fiber content in feed depends on the age of the ostrich, which is generally between 6% and 18%. The protein requirement of ostriches has not been accurately measured. The crude protein content of general feeds is 14%-22%. The crude protein content of young ostriches is highest, and then decreases with age. The crude protein content of the species of ostrich feed is preferably 18%. Information on ostrich nutrient research was most comprehensively reported by Angel (1993). Studies have shown that ostriches can digest more than 50% of neutral detergent fiber in feed at the age of 10 weeks, and ostriches after 10 weeks of age are 40% more efficient in obtaining energy from feed. Although young ostriches less than 10 weeks of age do not use fibers as effectively as adult ostriches, the feed should contain fibers to promote the establishment of a beneficial microflora in the hindgut of young ostriches.
It is very important to satisfy the supply of calcium and phosphorus in the ostrich egg production period, brooding period and the growth and development period of young birds. If the feed supply is insufficient or the ostrich itself absorbs obstacles, it will seriously affect the growth and development of the young birds. Newborn chicks have weak bones, causing cramps and toes to bend. Legs and fins are easily broken. When ostriches lack calcium and phosphorus, they are characterized by rough shells or fragile shells and even soft shell eggs, affecting the number of eggs laid. And hatching rate. The early manifestation of magnesium deficiency is vasodilation, hyperemia, and increased pulse counts. When severely deficient, ostriches show signs of paralysis and nervousness. The suitable amount of magnesium in ostrich feed is 0.23%-0.25%.
Vitamin E and selenium are also very important in ostrich feed nutrition. Muscular degenerative diseases in ostrich clinical cases are related to the lack of vitamin E and selenium. It has been found that ostrich brain softening may be due to a lack of vitamin E. The lack of vitamin E in adult birds is mainly manifested in pathological changes in reproductive organs and disorders of reproductive function. If the estrus is postponed, the mismatch increases, there is an apparent increase in no sperm, the number of eggs produced declines, and even estrus and no eggs are produced, which means that the female loses normal fertility. The recommended level of vitamin E in feed is 80 IU/kg. The recommended amount of selenium is 0.1 mg/kg.
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