The selection of good ostrich species is the key to the establishment of the farm, and it is also the most important factor determining the future economic benefits. The introduction of African ostriches into our country is relatively short, and it is now at the stage of population expansion. Due to the complex origin of ostrich introduction in domestic enterprises, the introduction of ostrich germplasm varies greatly. Therefore, farmers must be careful when purchasing ostriches. To select pure ostriches with good production performance, lay a good foundation for future development.
When purchasing ostriches, attention should be paid to pedigree files and ancestry matching. The pedigree archives record the source, species, sex, age, parents, and own main production performance of ostriches in detail. It is therefore possible to understand the ostrich’s production performance and kinship for reasonable kinship. Optional. The physique is sturdy and well-balanced. The head is delicate, the eyes are big, the posture is correct, and the pace is sensitive. The sex ratio should be taken into consideration when selecting the seed, and the ratio of male to female is generally ideal in a ratio of 3:1 to 5:2. The female ostrich's dorsal pinnae are contaminated, the hair tips shrink, and the back feathers are short or glabrous, the tail is drooping, and the hindquarters plump and plump; the male penis is thick, long, and curved to the left, and the penis is 25 centimeters or more long.
Special attention should be given to the introduction of age, although the effective breeding years of ostrich up to 40-50 years, but the newly-opened ostrich and old ostrich egg production performance is very low. It is generally believed that the selection of ostriches from 5-10 years of age is ideal, and the age of ostriches can usually be identified from the appearance. At 12 months of age, the legs and skeleton of the male ostrich turn white. At the age of two, both males and females, all fledgling on their backs faded, but most of the base and abdomen of the neck still existed, and most of the white feathers of the female's belly were replaced by tan feathers. At the age of 3, all the white feathers of the male and female ostriches faded, the feathers of the young chicks at the base of the neck were unchanged, and the legs and skeletons of some male ostriches became typical red. At the age of four, the ostrich is fully mature and has adult bird feathers. After 4 years of age, ostrich wings become thicker and more robust, but there are no other distinctive features. Male penis length can also be used to identify age.
The health status of the breeding birds must also be carefully observed. The first is to observe behavior. Well-behaved ostriches are full of energy, sensitive to external stimuli, and strong in gregariousness; the second is observing health conditions. The healthy ostrich had full muscles, no exposed bones, no disability throughout the body, and a steady and normal gait. The third was observation of feeding. Healthy ostriches have a strong appetite. When the keeper enters the pen, he will take the initiative and wait for food. Fourth, observe feces. Healthy ostrich feces are dark green, delicate and well-digested, with large urine output, clear urine, and a small amount of white urate.
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