The Scientific Breeding and Watershed Management of Leeches
The waterfowl breeding method can be selected according to the characteristics of the mother's periodic estrus, and can be divided into two types: periodic compounding and heterogenous compounding. Periodical compounding: In one estrus cycle, females mate for two consecutive days or every other day. Metaphase compounding: Perform more than two matings in more than two estrus cycles.
The breeding period of leeches is generally divided into the following three stages: Initial allocation stage: The initial allocation stage is about one week from the beginning of the initial allocation to the peak of breeding season. The main task of this stage is to make most of the mothers and muttons reach a mating, focusing on the training of the public breeding school of the year. Only one time per day for each male and female head, 3 times to 4 times in a row, depending on the circumstances. The maternal estrous is older than the first born mate, so the first mating stage should pay attention to the mating of the old maternal baboon.
Compounding stage: It takes about 1 week for the whole breeding season. The main task of this stage is to complete two reconstitutions of the estrus mother (including mothers who have mated for the first time). At this stage, male prostitutes can be mated 2 times a day, first with a female parent, and then with the first female parent.
Check-air-supplying stage: mainly for females who have not been assigned and whose mating end date is early, when the mating time is short, and the quality of semen of public males is poor, timely selection of public funds with strong breeding ability is required, and two consecutive matches are required. .
Estrus appraisal: to check the external genitalia, supplemented by the trial situation, and combined with the performance of comprehensive judgments, and more to "see, check, put" form. Look: When the public eunuchs heat up, they are irritated and restless. They often linger in cage nets. Their appetite is weak. They often make courtesy calls, and their temperament is more gentle than usual. Mother estrus, estrus, tend to the opposite sex, mental excitement, loss of appetite, often in the cage net activities, sometimes in the cage or abdominal abdominal cage, urination increased and yellow-green.
Examine the changes of the external genitalia: The estrus male genital testicles are markedly increased in sagging and elastic when touched. Before the female estrus estrus, the urinary hair is bundled and the vulva is covered by urinary hair. When estrus occurs, the vulva has obvious morphological changes.
In the process of release, when the male clerk embraces his mother's niece, the niece is very docile, but when she suddenly screams loudly and desperately tries to break free, it may be that the public penis has strayed into the anus and should be separated immediately. When such a female cockroach is properly placed, the male cockroach should be replaced or the anus sealed with tape. After the mating is over, the mother must be returned to the original cage in time.
Kinds of training and use of public funds
Kind of public training: This is the main task of the initial match phase. The rate of mating of public males in the initial allocation stage should reach more than 80%. It is difficult for the male to mate for the first time, but once the mating is successful, it can be successfully mated with other females. Therefore, when training small public funds in the same year, we must choose the maternal pheasant and gentle temperament to mate with them. We should prevent brutal intimidation and public beating, and be patient.
Use of public breeding: For adult males with strong mating ability, the number of mating should be controlled at the beginning of breeding. Some male cubs have poor initial breeding ability, but they are stronger in the later period and can use it to complete the outstanding breeding or finishing task in the later period. Some male prostitutes will lie down and collateralize, and they must focus on their use, specifically with those who are difficult to match.
Zibao keep alive technology: From late April to late May is the maternal period of the mother bird, and the survival technology of the beasts is an important part in the production of the leech.
Childbirth examination and care: Postpartum check is an important measure to ensure birth and childbirth, and it should be conducted by listening, seeing, and examining. If the child is seldom barking or occasionally barking, the voice is short and loud, the mother's appetite is getting better and better, her nipple is ruddy, full, and her mother is strong, indicating that the child is healthy. During the first inspection, it is necessary to check if the mother's breast is milkless or without milk. If the plush around the nipple is not pulled out by herself, artificially assisted plucking can be performed. If the pressed nipple is really milkless or lack of milk, Part or all of the child's birth can be raised.
Zizi began to feed at 20 days of age, but at this time it has not yet blinked, and the female quail feeds to the small room. If the mother-in-law does not send feed to the chamber, or if it is rarely delivered, the feed may be manually delivered to the chamber.
Keep quiet and hygienic: The birth mother-in-law is calm and frightened, and the excessive panic causes the mother to drop her son or eater. Therefore, she must avoid noise stimulation and refuse to visit.
Divide the nest in time: When the child is 45 days old, it should be weaned immediately. In the week before the nesting of the special-purpose quilts by VC, 0.01 grams per serving was added to the quail feed, which can reduce self-biting when the litters are collected.
The breeding period of leeches is generally divided into the following three stages: Initial allocation stage: The initial allocation stage is about one week from the beginning of the initial allocation to the peak of breeding season. The main task of this stage is to make most of the mothers and muttons reach a mating, focusing on the training of the public breeding school of the year. Only one time per day for each male and female head, 3 times to 4 times in a row, depending on the circumstances. The maternal estrous is older than the first born mate, so the first mating stage should pay attention to the mating of the old maternal baboon.
Compounding stage: It takes about 1 week for the whole breeding season. The main task of this stage is to complete two reconstitutions of the estrus mother (including mothers who have mated for the first time). At this stage, male prostitutes can be mated 2 times a day, first with a female parent, and then with the first female parent.
Check-air-supplying stage: mainly for females who have not been assigned and whose mating end date is early, when the mating time is short, and the quality of semen of public males is poor, timely selection of public funds with strong breeding ability is required, and two consecutive matches are required. .
Estrus appraisal: to check the external genitalia, supplemented by the trial situation, and combined with the performance of comprehensive judgments, and more to "see, check, put" form. Look: When the public eunuchs heat up, they are irritated and restless. They often linger in cage nets. Their appetite is weak. They often make courtesy calls, and their temperament is more gentle than usual. Mother estrus, estrus, tend to the opposite sex, mental excitement, loss of appetite, often in the cage net activities, sometimes in the cage or abdominal abdominal cage, urination increased and yellow-green.
Examine the changes of the external genitalia: The estrus male genital testicles are markedly increased in sagging and elastic when touched. Before the female estrus estrus, the urinary hair is bundled and the vulva is covered by urinary hair. When estrus occurs, the vulva has obvious morphological changes.
In the process of release, when the male clerk embraces his mother's niece, the niece is very docile, but when she suddenly screams loudly and desperately tries to break free, it may be that the public penis has strayed into the anus and should be separated immediately. When such a female cockroach is properly placed, the male cockroach should be replaced or the anus sealed with tape. After the mating is over, the mother must be returned to the original cage in time.
Kinds of training and use of public funds
Kind of public training: This is the main task of the initial match phase. The rate of mating of public males in the initial allocation stage should reach more than 80%. It is difficult for the male to mate for the first time, but once the mating is successful, it can be successfully mated with other females. Therefore, when training small public funds in the same year, we must choose the maternal pheasant and gentle temperament to mate with them. We should prevent brutal intimidation and public beating, and be patient.
Use of public breeding: For adult males with strong mating ability, the number of mating should be controlled at the beginning of breeding. Some male cubs have poor initial breeding ability, but they are stronger in the later period and can use it to complete the outstanding breeding or finishing task in the later period. Some male prostitutes will lie down and collateralize, and they must focus on their use, specifically with those who are difficult to match.
Zibao keep alive technology: From late April to late May is the maternal period of the mother bird, and the survival technology of the beasts is an important part in the production of the leech.
Childbirth examination and care: Postpartum check is an important measure to ensure birth and childbirth, and it should be conducted by listening, seeing, and examining. If the child is seldom barking or occasionally barking, the voice is short and loud, the mother's appetite is getting better and better, her nipple is ruddy, full, and her mother is strong, indicating that the child is healthy. During the first inspection, it is necessary to check if the mother's breast is milkless or without milk. If the plush around the nipple is not pulled out by herself, artificially assisted plucking can be performed. If the pressed nipple is really milkless or lack of milk, Part or all of the child's birth can be raised.
Zizi began to feed at 20 days of age, but at this time it has not yet blinked, and the female quail feeds to the small room. If the mother-in-law does not send feed to the chamber, or if it is rarely delivered, the feed may be manually delivered to the chamber.
Keep quiet and hygienic: The birth mother-in-law is calm and frightened, and the excessive panic causes the mother to drop her son or eater. Therefore, she must avoid noise stimulation and refuse to visit.
Divide the nest in time: When the child is 45 days old, it should be weaned immediately. In the week before the nesting of the special-purpose quilts by VC, 0.01 grams per serving was added to the quail feed, which can reduce self-biting when the litters are collected.
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