The last weeks of pregnancy and the first weeks of lactation are a crucial period for high-yielding cows, because during this time there is an increased demand on the body for nutrients, which can lead to dangerous diseases.

The perinatal period includes 3 weeks of the dry period and 3-4 weeks of lactation. From a physiological point of view, cows in this period undergo intensive changes (preparing the mammary gland for the lactation period, doubling the body weight of the foetus, increased demand for nutrients), which may contribute to the reduction of the immune status of the organism. Diseases observed in the perinatal period can be divided into two groups

The first are caused by deficiencies of vitamins and minerals, and the second are caused by improper balance of energy relative to protein. The most commonly observed disorders of the first group include hypocalcemia and the downer cow syndrome, which symptoms can occur not only in the first 12-72 hours after calving, but also a few days before the termination of pregnancy. There are three stages of hypocalcemia distinguished. During the first stage, a cow can stand, but staggers when walking. During the second stage, there is a problem with getting up, and the third stage involves flaccid paralysis which manifests in losing the ability to support the head in a bridge position of the body (flat lying position). According to many scientists, the above described symptoms are the result of disturbances in the calcium-phosphate balance in the body. In addition to a high supply of calcium (Ca), another cause is the excess of sodium (Na) and potassium (K) in the daily feed ration during the dry period. Such condition leads to the increase in the concentration of cations that raise the pH of the blood. Alkaline reaction of the body fluid decreases the secretion of parathyroid hormone and blocks the functions of protein receptors on the surface of the bone. In such case, the mechanism of Ca mobilization from the bone is blocked, and the reserve circulating in the blood is rapidly used to produce colostrum. The labour itself is not without significance, as large amounts of Ca are used for the process of smooth muscle contractions (labour contractions). Phosphorus is also an important factor. Its correct level determines the efficiency of Ca absorption in the small intestine. It is supplied both from the reserve of bone tissue as well as from the digestion of feed. Speaking about shortage of minerals, it is worth to remember that hypocalcemia and the downer cow syndrome are often accompanied by a retained placenta. The pathogenesis of the disorder encompasses several factors (infectious factors, twin pregnancy, difficult labour, poor hygiene of facilities, high condition of cows prior to calving), however, in recent years, the main cause of the disorder is believed to be the deficiency of calcium, selenium and fat soluble vitamins (A, D, E).

In order to protect cows from periparturient disorders, it is important to provide a balanced ration to supplement nutrient deficiencies. However, the increase in estrogen levels before and after parturition results in reduced feed intake in the first few days after calving. A large amount of colostrum, which contains nutrients, minerals and vitamins, is also produced during this time. To prevent hypocalcemia, retention and retention of the placenta, preparations in the form of postpartum goitre are used. Maxdrink is one such product. It contains a special composition of ingredients that accelerates the recovery of the body and supports metabolic functions. The content of minerals and easily absorbable calcium restores electrolyte balance, and the presence of vitamins improves the immune system and prevents conditions such as detention placenta and mastitis. The formula also contains yeast, which stimulates appetite and stabilizes rumen microflora. Maxdrink has a taste tailored to the taste preferences of cows, which influences its eager consumption. Using the formula immediately after calving helps to effectively fill the rumen and protects cows from dangerous digestive displacement.