First, the ills of the cement floor, here I say three main drawbacks
1, lack of nutrition: the cement floor is relatively hard, the ingredients inside the pig can not shake, all the nutrients can only be provided by breast milk and feed, easy to make part of the lack of nutrition. For example, the sows’ milk is prone to iron deficiency. When pigs are raised on the land surface, the piglets can obtain iron from the soil by biting the soil. However, iron cannot be supplemented on the concrete floor, and iron must be manually supplemented. Do not underestimate this point of iron, China in the 1970s a lot of imitation of foreign pig construction, many large farms use concrete floor, there has been a special kind of disease, piglets during breastfeeding, weight loss, anemia, and finally a large area of ​​death; For the first time the disease was discovered, only the cement floor was there but the land surface was not. At that time, people named it as "cement disease." Later, after the study, it was caused by iron deficiency. After a variety of iron supplements were adopted, this problem was solved. In addition, the soil can also provide a variety of nutrients, if we pay attention, other pigs in the earth ring are often stronger than the pigs in the cement ring; pigs on the cement floor may also lack other nutrients, but only a short time for pigs. There is no obvious symptom. Therefore, if you are raising male sows in the cement ring, you must consider the lack of nutrition.
2. Hard and easy to hurt limbs and hooves: We all have experience. Running or playing on concrete grounds for a long time is very easy to cause joint pain. This is because the ground is too hard and it lacks elasticity. Compared with pigs, pigs have smaller legs, smaller hoof areas, and larger pig weights, making it easier to injure limbs and feet. In the past, when China imported advanced varieties, a large number of Danish Landrace pigs were introduced. However, after the arrival of domestic animals, a large number of outbreaks were caused due to the onset of limb and leg diseases; the reason for the final investigation was that this species had more fine legs, a long body, and a high lean percentage. Legs and hooves cannot often bear excessive weight. In foreign countries, they don't use cement floor alone, and they all take preventive measures. Later in China, they have been considering leg firmness to avoid this The situation happened again. Now, there are still a large number of breeding pigs on imported pig farms because of the limbs disease, especially the high lean boars.
3, thermal conductivity is strong, is not conducive to thermal insulation: cement ground relative to tile and land, the thermal conductivity, thermal insulation performance is worse; this effect is not great for big pigs, but for pigs, It is fatal damage. One of the characteristics of pigs is that “big pigs are afraid of heat and piglets are cold.†Large pigs are afraid of heat because pigs lack sweat glands and cannot rely on sweating to dissipate heat. Moreover, big pigs wear a thermal underwear all year round (in vivo). Fat), and the pig's coat (hair) is not warm, underwear has not been created, is the most cold. If the temperature is insufficient, the disease resistance of piglets is greatly reduced, and various diseases are prone to occur. The cement floor belongs to the cool ground, which means that the heat conductivity is strong. The heat of the piglets allows the cement floor to suck away, and it is easier for the cold to have problems. According to scientific research, pigs lie on cement floors, and the effective temperature is 5°C lower than the actual air temperature. In the case of grass or wood, the effective temperature can be 5°C higher; that is, the same temperature is 20°C. The pigs are Lying on a matted ground will not feel cold, because the effective temperature will increase; while lying on the concrete floor, it will often feel cold because the effective temperature is lowered.
The above hazards do not mean that the cement floor cannot be used, but that we know the hazards of the concrete floor and we can take appropriate measures to prevent and solve it. The following methods are available for reference:
Second, the solution
1, the use of full-priced feed: If the pig needs nutrition can be met through the feed, there will be no lack of nutrition, with particular attention to vitamins and trace elements. Now people are using compound feeds, nutrition should be sufficient, but also pay attention to some issues; if the feed is stored for a long time, part of the nutrients will easily fail, it may cause lack of this nutrient; In addition, the feed formulation is detailed The formula can not be arbitrarily changed, so if you do not understand the characteristics of various feed ingredients, do not easily change the formula, or reduce the amount of material (or premix).
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