First, select species
1, species of ostrich selection project body appearance physical robust, well-balanced development, head handsome, eyes great, posture, correct, pace sensitive. Female ostriches with high egg production have filthy back lobes, hair tips shrinking, and the back feathers are short or glabrous, their tails are hanging down, and their hindquarters plump and plump.
The male penis of the genitalia is thick and long, curving to the left, and the penis is 25 centimeters or more long.
Growth performance includes meat production performance and reproductive performance. Meat production performance includes growth rate, feed ratio, and slaughter rate. Reproductive performance refers to the date of production, egg production, egg weight, fertilization rate, hatching rate, hatching rate, brood survival rate and so on.
2. Selection methods Individual selection is directly based on the individual quality of ostriches. It not only reflects the productivity of the breeding bird, but also reflects the breeding value of the breeding bird to some extent.
Family selection is based on the entire family (including full-sib and half-sib families) as a selection unit, based on the average of family performance.
Pedigree selection is based on the ancestry, siblings, and descendants of the pedigree records for selection and performance.
In practical work, it is necessary to combine the above methods for selection and focus. The young bird breeding stage is dominated by pedigree selection, supplemented by appearance and growth and development identification. When the breeding bird has demonstrated production performance, it is mainly based on individual selection, supplemented by pedigree identification.
Second, matching
1. Matching methods The selection of kin-selected breeding birds often uses non-inbreeding mating, that is, the breeding birds are not selected within 3 generations of kinship. However, in order to consolidate some good traits, full-sib or half-sib inbreeding can be used.
Homogeneous selection uses male and female breeders with the same properties for mating.
Age matching using older male and female ostrich mating can increase the fertility rate.
2. Male and female males with excellent male and female ratios can be mated 5 times a day, and sexual desire can be up to 8 times a day. Therefore, a male ostrich can be equipped with 4 to 5 female ostriches. However, in order to achieve the best breeding effect, the ratio of male to female is preferably 1:3.
Under captive breeding conditions, male ostriches do not have obvious selectivity for their spouses, so they can be adapted at any time depending on production needs. During the breeding season, 1 male and 3 females constitute a breeding unit for breeding, which is beneficial to pedigree recording and identification of offspring blood.
1, species of ostrich selection project body appearance physical robust, well-balanced development, head handsome, eyes great, posture, correct, pace sensitive. Female ostriches with high egg production have filthy back lobes, hair tips shrinking, and the back feathers are short or glabrous, their tails are hanging down, and their hindquarters plump and plump.
The male penis of the genitalia is thick and long, curving to the left, and the penis is 25 centimeters or more long.
Growth performance includes meat production performance and reproductive performance. Meat production performance includes growth rate, feed ratio, and slaughter rate. Reproductive performance refers to the date of production, egg production, egg weight, fertilization rate, hatching rate, hatching rate, brood survival rate and so on.
2. Selection methods Individual selection is directly based on the individual quality of ostriches. It not only reflects the productivity of the breeding bird, but also reflects the breeding value of the breeding bird to some extent.
Family selection is based on the entire family (including full-sib and half-sib families) as a selection unit, based on the average of family performance.
Pedigree selection is based on the ancestry, siblings, and descendants of the pedigree records for selection and performance.
In practical work, it is necessary to combine the above methods for selection and focus. The young bird breeding stage is dominated by pedigree selection, supplemented by appearance and growth and development identification. When the breeding bird has demonstrated production performance, it is mainly based on individual selection, supplemented by pedigree identification.
Second, matching
1. Matching methods The selection of kin-selected breeding birds often uses non-inbreeding mating, that is, the breeding birds are not selected within 3 generations of kinship. However, in order to consolidate some good traits, full-sib or half-sib inbreeding can be used.
Homogeneous selection uses male and female breeders with the same properties for mating.
Age matching using older male and female ostrich mating can increase the fertility rate.
2. Male and female males with excellent male and female ratios can be mated 5 times a day, and sexual desire can be up to 8 times a day. Therefore, a male ostrich can be equipped with 4 to 5 female ostriches. However, in order to achieve the best breeding effect, the ratio of male to female is preferably 1:3.
Under captive breeding conditions, male ostriches do not have obvious selectivity for their spouses, so they can be adapted at any time depending on production needs. During the breeding season, 1 male and 3 females constitute a breeding unit for breeding, which is beneficial to pedigree recording and identification of offspring blood.
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