Six Ways to Improve the Breeding Rate of Small Tail Han Sheep

The strong reproduction rate is the outstanding characteristic of the Small Tail Han sheep. The key to keeping small Tail Han sheep for profit is to use the ewes of the Tail Han sheep in feeding and management, shorten the breeding cycle, master one-child polygamy, and increase reproduction rate. There are many factors that affect the reproduction rate of Small Tail Han sheep, single factors and comprehensive factors. In production practice, only by correctly analyzing many factors and taking effective countermeasures, can we obtain maximum output. This article introduces six methods for improving the reproduction rate of Small Tail Han sheep for farmers.

First, choose to breed male and female sheep

Twin lambs or more lambs are hereditary and were selected from the stock of male and female rams whose upper generation male and female ewes were preferably one or more than two lambs. These male and female mutton with good genetic basis are reserved for species use, which can fully exert their genetic potential in breeding and increase the chance of ewes having multiple births.

Second, to strengthen the breeding of sheep nutrition

Strengthening sheep nutrition is an important measure to increase the reproduction rate. Adequate nutrition makes the sheep have a healthy body condition and moderate sensation. The ram maintains a strong sexual desire. When sperm is used for breeding, there are many sperms, strong vitality and high fertility. The ewes can be estrus all year round, and the gestating fetus can be healthy after pregnancy. Well-developed, postpartum milk is sufficient, lambs are born large, and the survival rate is high. At the same time, the odds of how bad the ewes are produced will increase.

Therefore, small-tailed sheep must be fed with sufficient mixed concentrates, whether grazing or feeding. In the non-breeding period, the rams need to feed 0.5 to 0.6 kg of mixed coarse material per day, 0.8 to 1.0 kg of mixed fine material per day, and 1.7 to 1.8 kg of roughage per day during the breeding season; the ewes feed 0.3 to 0.5 mg/day of the mixed concentrate. 0.4 kg, pregnant ewes with the increase in the number of days of pregnancy (especially late), but also should gradually increase the amount of fine material.

The concentrate must contain sufficient amounts of protein, energy, vitamins, trace elements, and other minerals and ensure sufficient drinking water. Green feed is particularly important for breeding sheep. Because the green feed can make up for the deficiency of nutrient deficiency in roughage, increase the sperm density and vigor of the ram, promote the maturation and multiple ovulation of eggs in the ewes, increase the odds of producing multiple lambs, and promote the development of the fetus in pregnant ewes And growth, to ensure that the output of the lamb is a major new birth, and the high survival rate has an important role.

Third, increase the proportion of young sheep in the sheep

Young early-wedding ewes and old and weak sheep in the flock are not as fertile as the ewe. According to statistics, small-tailed Han sheep produce fewer lambs, generally only seen in first-born sheep, and a higher proportion of twin lambs. The ewes have the strongest reproduction rate from 3 to 4 years of age in their lifetime, and the breeding period is generally 8 years. Therefore, in order to improve the overall level of the flock, rationally adjust the herd structure, and systematically supplement young ewes, increase the proportion of ewes aged 3 to 4 years in the flock, and discover and eliminate old, weak or low fertility in time. The ewes have become the problems faced by the pastoralists and must be solved. On this basis, they can achieve the goal of increasing the overall reproduction rate of the sheep.

Fourth, implement two breeding

When the ewes are in estrus, the practice of double breeding or two breeding inseminations can increase the quaternary birth rate of ewes and increase the chance of producing twin lambs. Because the ewes have short estrus time (generally about 30 hours), the ovulation time It is also short, and some ewes have inconsistent maturation time. Therefore, the probability of one mating or losing the precision fetus of the ewes is low and it is difficult to engage more eggs in fertilization. The use of two breeding methods can maintain the spermatozoa with fertilizing ability in the genital tract of the ewe, increasing the chance of fertilization. The commonly used method in production is to inseminate the ewes that are in estrus, once in 12 and 24 hours, and generally 10 to 12 hours in intervals between inseminations can effectively improve the conception rate of ewes.

V. Early Weaning of Lambs

When the lamb is weaned early, shortening the feeding time of the ewes can promote early estrus of the ewes and achieve a year of prolificacy. Early weaning lambs need to artificially train the lambs' feeding power. When the lambs are 10-15 days old, they can feed fresh grasses, leaves or soft and digestible hay and leaves to stimulate the early formation of digestive tract digestive function and to lambs. Self-feeding direction transition. In order to make the lamb eat as soon as possible, you can mix the corn and bean noodles with the porridge or feed it in the water for the lamb to eat. You can also put the fried condiment in the basin to let the lamb feed for himself. The lamb usually goes to 20 You can eat normally after ~30 days.

Six, injected drugs or hormones, induced ewes produce multiple lambs

With a substance that can promote ovarian follicle maturation and multiple ovulation, inject a certain dose into the ewes body, through hormone regulation, to strengthen the sexual function of the ewes, and promote the development and maturation of the ewes' eggs, thereby expelling more eggs to participate in Fertilization, reaching the goal of a fetus. According to the experiment, injection of pregnant horse serum or injection of dilavin and digesterin has a certain effect on the induction of ewes producing multiple lambs.

Recommended reading: http://

API Products

An active substance is the main active ingredient in a drug. Take a simple aspirin for example. Acetyl salicylic acid is synthesized through chemical process and purified to a specified purity. The synthesis of acetyl salicylic acid is made by adding various excipients, such as fillers, adhesives, disintegrating agents, etc., and then pressing it into tablets. The production of apis is generally either pure chemical synthesis, biological fermentation, or semi-synthesis, with biological fermentation followed by extraction followed by synthesis. Not all pharmaceutical enterprises make API by themselves, and many manufacturers do not have the scale to produce API. Even if there is large-scale production, the cost of production may be much higher than that of procurement. Therefore, most manufacturers buy bulk drugs, and then make preparations, so that the production of drugs can be completed without a very large scale. At present, China and India have become the two largest API producers in the world. Many European and American pharmaceutical companies, even some of their own original drugs, will give up the production of API as the patent expires and the market matures, and turn to purchase apis from China and India,API production generally go through laboratory, generated through laboratory bottle container canister, taking after successful, pilot magnification, which is to enlarge the quantity of the production, then no problem tends to be faced with a lot of small scale experiment, a very simple example, the heating process, due to the relatively small amount in the laboratory, uneven heating cases is less, But if it is scaled up to a few tons of pot, at this time the heating may be not hot in this place, where the paste pot, at this time you need to stir, but the speed of mixing is appropriate, this process needs to calculate or grope. Finally from the pilot test, and then to the formal production, the volume of further amplification, and will face a lot of new problems. Therefore, although some drugs are generic, the research and development of the whole process from small test, pilot test to the final mass production is indispensable, so even generic drugs have very high research and development costs.

api meaning,api products to buy,best api products,cheap api products,best buy products api,best api products

Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptidenootropics.com