Effect of High Temperature on Production Performance of Male Boar
Dr. Yang: Hello! Not long ago, my farm had entered a number of boars. It is now in hot summer and the temperature is too high. I have found boars in the pens and irritability in the pens. I am worried about the reproductive performance. I would like to introduce some boars. Summer farming technology! Thank you! Tu Changsheng Tu Longsheng readers: Hello! When the environmental temperature exceeds 37°C and the duration exceeds one week, the effects on the production performance of male boars are mainly manifested as a significant decrease in sexual desire, a significant decrease in semen quality, a marked decrease in semen volume, and an in vitro survival time of spermatozoa in vitro. The time is significantly shorter. Boars are exposed to heat stress for a long time and can also lead to poor sperm development and sperm damage. The testicular spermatogenesis disorder occurs, which in turn reduces the useful life of breeding pigs and reduces the value of seed. In severe cases, it can also cause testes. Permanent loss of sperm function, high temperature is also an important factor in inducing bovine orchitis. By taking some measures to control the temperature of the environment, the effect of heat stress on the production performance of male boars can be reduced. Take a shelter to prevent direct sunlight By adopting the procedures for changing the species of boars, erecting shady sheds and installing shower facilities, the impact of heat stress on boars will be reduced and the boar production performance and breeding quality will be improved. The scaffolding can be built above the boar enclosure, and some climbing plants can be planted around the pens, or branches can be placed on the scaffolds to prevent direct sunlight and reduce the ambient temperature of the pig house. In particular, open-type pig houses should be shaded to prevent direct sunlight and reduce the ground temperature and the ambient temperature of the pig house. Leaking (dripping) water cooling is used to set up spraying facilities in the pig house. When the ambient temperature is high, especially at noon, the pens are sprayed through the water control valve at intervals to reduce the ambient temperature of the pig house. The purpose of ground temperature. In addition to the shading measures for open pig houses, the use of drip cooling measures is more applicable and relatively simple. The specific method is to set up a plastic pipe at a certain height in the pig house, install a valve at the water inlet, drill a small hole in the water pipe, or install a faucet. After the water passes, the water flows out of the hole or flows out of the faucet. The drip time and drip rate can be controlled by the valve. Increase ventilation and provide sufficient drinking water In hot weather, due to higher temperatures, boars have a greater need for water, and the boar's living environment, especially housing and odors, changes rapidly. Therefore, it is necessary to install an automatic drinker or frequently replace drinking water in a boar enclosure to ensure that boars can drink clean cold water at any time. In a boar enclosure, especially a closed-type pig house, electric fans and ventilation fans are installed, and ventilation and ventilation are often performed, which can effectively improve the living environment of the boar. Adjusting the procedure for breeding boars The first is to adjust the timing of the boar. Generally, during relatively cool periods such as before 7 o'clock in the morning, arrange boar movement, or extend the exercise time in cool and cool weather, and hot weather shortens the exercise time. The second is to adjust the timing and frequency of boar breeding. Breeding or breeding of boars should be done during cool periods, preferably before 7 am. The frequency of boar semen picking is appropriate once every 3 days. The frequency of mating species should also be 3 days once and the minimum should be taken once every 2 days. The third is to adjust the feeding time and feeding times of the breeding boars. They are fed once every morning at 8 o'clock and at 6 o'clock in the evening, and no longer feed at noon. Increase protein feeds, especially animal protein feeds and succulent green feeds, to reduce fat feed content. It is best to insist on feeding green and succulent feeds at noon every day. Vitamin supplements and sodium bicarbonate Vitamin C helps maintain normal body temperature and has a good anti-stress effect. Vitamin E plays an important role in the synthesis of a variety of hormones, directly affecting the reproduction performance of boars and improving the anti-stress ability. Summer should increase the amount of vitamin C and vitamin E added. From May, add 20-40 grams per 50 kilograms of feed. Sodium bicarbonate regulates blood and muscle acid-base balance, and has anti-stress effects. High temperatures cause changes in certain ion concentrations in the blood. Supplementing electrolytes can protect against heat stress. Adding sodium bicarbonate can increase the blood's buffering capacity, and the amount of 0.5% is added. The addition time is preferably from May. If the conditions permit, the breeding farm should establish a kind of boar life, breeding special enclosures, install air conditioning and air purification devices, artificially regulate the environmental temperature and air quality of breeding boar live and breeding cages, in order to achieve the species Boars live and breed in a more suitable environment, which in turn improves boar production performance. Fingerprint Scanner,Biometric Fingerprint,Bluetooth Fingerprint Scanner,Wireless Fingerprint Scanner Chongqing Huifan Technology Co.,Ltd. , https://www.huifantech.com