The period from the time the weaner is weaned until she is pregnant to the sow is known as the empty period, also known as the mating preparation period.
Empty sows need a comprehensive range of nutrients, especially protein, vitamin A, vitamin D, vitamin E and calcium, phosphorus and salt and other minerals. Vitamin A, vitamin D, and vitamin E are important for the reproductive performance of sows. Insufficient supply of vitamin A in the diet will reduce sexual activity, often causing infertility or delaying estrus.
Therefore, empty mother-family pigs should feed green feed, carrots, yellow corn, squash, and other vitamin A-rich feed. In the absence of vitamin D, the absorption of calcium and phosphorus is affected, so that metabolic disorders in the body have a greater impact on the reproductive performance of sows. If vitamin E deficiency, can cause infertility.
Empty sows are very sensitive to calcium deficiency, showing that they are less likely to be affected and the number of litters is reduced. Therefore, in the diet, 20 grams of calcium, 10 grams of phosphorus, and 20 grams of salt should be supplied to meet their needs for minerals.
The diet composition of empty sows is mainly green and juicy. Generally, each pig feeds 5-10 kilograms of green feed or 4.5 kilograms of feed each day, and adds about 0.75 kilograms of concentrate. In this way, the breeding condition of the sow can be maintained, thereby increasing the ovulation rate and increasing the conception rate.
Blood system is also called circulatory system.
For the treatment of diseases of the circulatory system:
According to the American Heart Association, cardiovascular disease is the leading cause of death in the United States. Because of its vastness and critical nature, it is one of the systems of the body most prone to disease.
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One of the most common diseases of the circulatory system is arteriosclerosis, in which the fatty deposits in the arteries causes the walls to stiffen and thicken the walls. According to the Mayo Clinic, the causes are a buildup of fat, cholesterol and other material in the artery walls. This can restrict blood flow or in severe cases stop it all together, resulting in a heart attack or stroke.
Stroke involves blockage of the blood vessels to the brain and is another major condition of the circulatory system, according to Mitchell Weinberg of the North Shore-LIJ Health System. [Risk factors include smoking, diabetes and high cholesterol," he noted.
Another circulatory disease, hypertension - commonly called high blood pressure - causes the heart to work harder and can lead to such complications as a heart attack, a stroke, or kidney failure, the NLM noted.
An aortic aneurysm occurs when the aorta is damaged and starts to bulge or eventually tear, which can cause severe internal bleeding. This weakness can be present at birth or the result of atherosclerosis, obesity, high blood pressure or a combination of these conditions, according to Weinberg.
Peripheral arterial disease (also known as PAD) typically involves areas of narrowing or blockage within an artery, according to Jay Radhakrishnan, an interventional radiologist in Houston, Texas. In addition, chronic venous insufficiency (also known as CVI) involves areas reflux (or backward flow) within the superficial veins of the lower extremities.
PAD is diagnosed with noninvasive testing including ultrasound, CT scan, and/or MRI. Ultrasound is the least expensive of these methods, but also gives the least amount of detail, as CT and MRI show a much higher degree of anatomic detail when identifying areas of narrowing/blockage within an artery. CVI is diagnosed with ultrasound as the venous reflux can be measured accurately by ultrasound, which ultimately guides treatment.
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