Raising the ewes' fertility rate at the right time

The estrus of sheep in northern China is seasonal (unlike the evergreens in the south, ewes in estrus all year round, and can be bred in all seasons), and breeding begins in August-September, which is the peak season for sheep and autumn and should not miss the opportunity. Well, don't miss it, otherwise you will lose the great opportunity for breeding. Because the autumn weather is good every year, neither cold nor hot, the grass is good for sheep, and the ewe is full of body and strength. It can promote the estrus of the sheep, has a strong sexual desire, and the ram is full of energy. The ewes after breeding have a high rate of sitting. After September and October in the autumn, the species is bred. In the spring of February-March in the coming year, the lambs are catching up with the grassy stage after weaning. This is very beneficial to the development of the young lambs and the ewe's milking. When the lambs reach the autumn, they can be fertilized. Sheep go public and grab a good amount of money. Otherwise, the ewes will not be able to catch the elk this autumn. In the most suitable period of estrus, if they are not allowed to breed and empty or breed and have no children, they will be delayed by breeding events. This means that they will lose the significance of feeding the ewes. Economic loss is great. This is due to the strong estrus and the most regular autumn sheep. Easy to match, October-February 2 is not very regular, March-July the most irregular, has lost the appropriate breeding period, almost no heat. Therefore, we must pay attention to the autumn trophy of the current ewes and ignore them in order to obtain good economic returns.

First, it is important to grasp the autumn pheasant autumn is the key period of sheep breeding, not a good autumn cricket is difficult to match species, therefore, we must do a good job in the autumn pheasant, in the use of pasture, we must plan to use their own grazing land The practice of rotational grazing, using a whip grazing method, so that sheep can spread to eat grass, do not crowd a pile, before and after the difference, so that the sheep can eat grass. After grazing every morning in the early morning, you can pluck the sheep's hungry and eat the grass that the sheep had eaten on the first day of the pasture. When the sheep do not like to eat, they will be rotated and grazing to the next grazing land. If there are many grasslands, the grazing law will be used first and finally changed. Gypsophila grazing method. For example, if the grassland is small, the plots after grazing can also be eaten by the sheep, and then the grazing can be repeated again so that the sheep can eat a few more satiations. Also pay attention to the changes in the weather. Before the next frost, it is better to return to the evening and return to the evening. After the frost, it will be late to return late. When the sheep are not fully fed, they must be fed in time after the late grazing. This will not only enable the sheep to catch the fleas, but also promote the estrus of the sheep and increase the sheep's rate of sitting and the double lambs.

Second, we must choose a good breed of sheep in order to raise the sheep's hair. meat. milk. The quality and yield of quail, the breeding physique are robust, and the production performance is good. When the sheep are bred, they should choose a good GM. ewe. In particular, the rams have a great impact on offspring, because a ram can mate with 30-40 ewes in the breeding season. If artificial insemination is used, it can be used for 1,000 ewes. Therefore, the use of high value, must choose a good ram, can effectively improve the quality of herds and improve hair. meat. Milk and molting quality and yield. The choice of breeding sheep is based on the selection criteria of the variety characteristics and production uses. Three methods should be selected for selection: one is to check the pedigree, the second is to check itself, and the third is to check the quality of the offspring of the ram to determine the age of 2 to 7 years old as the ram to breed, and avoid inbreeding. Four elections: a public election. The ewes must be wide-breasted, wide-necked, and strong in limbs. Two selected rams have high libido and large testes. Strong breeding performance. The ewes must have good nannies of one and a half years old to 7-8 years old, and the milk is good. Will feed. Lamb is good, hindquarters are developed. Lambs and more sheep. The three options are soft and soft. High-bred sheep with high yields. There are no genetic diseases in the four elections. Gastrointestinal disease. Reproductive diseases. Healthy sheep such as abortion and infectious diseases.

Third, pay attention to grazing in time with the group, and find that the ewes of the ewes are red and swollen, with thick white mucus coming out of the water, disturbed, not eating, calling from time to time, so as to climb the same ewes, willing to approach the rams, and when using the ram for trial breeding The ewes do not move and let the rams mate, that is, heat the ewes. Breeding should be timely, because the breeding rate of female ewes, the key lies in the timing of breeding. The ewes generally have a estrus every 17 days to 21 days. The duration of each estrus is 2 days to 3 days. However, besides the old ewes, do not mate, because most of the ewes ewrate often after estrus starts. 30 hours - 40 hours, which requires the ewes to be timely breeding, do not rush, do not miss the opportunity. If the mating is too early and the egg has not been discharged, the vitality of the spermatozoa is gradually weakened and fails to reach the fetal purpose. If the mating time is too late, the egg is already senescent, the fertilization ability is very weak, and even the fertilized ability is lost. Due to different ages of sheep, the breeding period is different. Should be with the old match. With less evenings, there are a lot of regularities in the middle that don't go with them. Because of the long duration of estrus in the young ewes, the breeding time should be slightly rearward. The day of estrus is unworthy, and it is optional to breed on the next morning or evening. The most suitable one is to be able to register. The estrus in elder ewes lasts for a short period of time. Therefore, it is necessary to breed in advance after the occurrence of heat, that is, to match the situation, and then once every 12 hours, has been allocated to terminate the heat. Middle-aged ewe during the estrus period is not long. It is not short, but the length is moderate. The breeding time should be selected between the old ewe and the young ewe, that is, the first day and the second night are the most suitable, and the highest rate of quaternization is to increase the quaternary birth rate and the number of lambs produced by the ewe. In the middle or late estrus, it is better to use two or more rams with different good breeds.

Northern ewe estrus is not only affected by the season. Affected by temperature, environmental factors are also a key factor affecting conception rate. The best environment for fertilization and mating in the day is mating in the evening or at dawn, which can shorten the meeting time for good viable eggs and help improve the conception rate. .

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