Silage Wrap Film ,Width 250mm, Thickness 25um, Length 1800m,UV resistance 12-24months.
Characteristics:
1:Enhance the nutrition of forage and inhibits undesirable fermentation process to ensure the safety of silage
2:Good resistance against moisture penetration and oxygen permeation
3:No investment in storage tank or warehouse for forage
4:Less risk of animal diseases from accidental ingestion of mouldy silage
5:Great Wrapping efficiency
250 Silage Wrap Film,Agricultural Silage Wrap,Hay Wrap Film,Pe Plastic Stretch Film Zibo Maoyang Industry and Trading Co.,ltd , http://www.mysilage.com
1. Nutrient nutrition is the material basis for maintaining boar vitality, producing sperm, and maintaining strong breeding ability. The content and quality of protein in feed nutrients are critical, and it has a great influence on the quantity and quality of semen and sperm life. In the life, the level of crude protein in the diet of male boars should be 18%-20%, and the proportion of soybean meal should be more appropriate. It is better to add a certain proportion of fishmeal or other animal feed because animal feed is rich in animal feed. Nucleoproteins that promote sperm formation. However, avoid using cottonseed cake as a protein feed for boars to prevent boar testicular atrophy. At the same time, it should be noted that the digestible energy in the diet should be 3.0 Mcal/kg to 3.1 Mcal/kg, so that the boar is not fat or skinny and maintain normal planting conditions; the deficiency or lack of calcium and phosphorus in the diet is also Can affect semen quality, calcium, phosphorus ratio of 1.5:1 is appropriate. In addition, bovine green feed should be provided daily to prevent the deficiency of vitamins A, D, and E.
2, although the sports movement can not directly affect the quality of semen boar, but to promote appetite, help digestion, enhance physical fitness, promote metabolism, maintain the kind of body condition, improve reproductive function has a good effect. Insufficient exercise will seriously affect the use of breeding and exercise. Excessive exercise will cause boar fatigue. In production, it can be allowed to move freely or drive away on a flat ground or sports ground every day for 1 hour to 2 hours. At the same time pay attention to summer in the morning and evening sports, winter sports at noon, to avoid the hot high temperature and cold weather, stop the exercise on cloudy days.
3, the use of rational use refers to the kind of boar breeding, not too frequent, it can not be long-term unworthy. Excessive sperm extraction times, although not affecting sperm motility, sperm density may be reduced, sperm metabolism may also be reduced, thus affecting the fertilization rate. No more than one boar should be bred every day for two days or less and four days for two consecutive days or three days. Adult boars over the age of two should not exceed two times per day, and should be separated by 4 hours to 6 hours between the two, otherwise the boar's useful life will be shortened. The boars have a long mating time of about 5 minutes to 25 minutes. However, in the course of ejaculation, the ejaculate has a large amount of sperm containing sperm. Therefore, it is extremely important that boars be fully ejaculated and no interference should occur during mating. If the boar is unfit for a long time, the growth will be hindered, the semen will not be good, even if the sexual desire is not strong or there is no sexual desire at all, and the sow is often not affected by the fetus. In non-matching seasons, boars can be harvested regularly (about 2 weeks).
Breeding and utilization of boars
The quality of breeding boars has a great influence on their offspring. As the saying goes: “Boars are good, good slopes are good; sows are good and they have a good nestâ€. The offspring of a boar are much larger than the offspring of a sow. For natural mating, a boar can produce about 0.4 million heads and 6,000 heads of offspring a year. With artificial insemination, a boar can produce about 15,000 to 20,000 offsprings a year. The breeding of boars should mainly grasp the three aspects of nutrition, exercise and rational use.