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The intestinal tract of piglets is the main place for digestion and absorption of nutrients, which plays an important role in maintaining the healthy growth of piglets. Due to the development of the digestive tract of weaned piglets is not perfect, more sensitive to changes in external factors, weaning brought great stress and changes in feed form to the destruction of intestinal mucosa, resulting in reduced digestion and absorption of nutrients, decreased immune function, affecting the growth and development of weaned piglets. Therefore, it is of great significance to study the factors and control measures affecting the intestinal health of weaned piglets by analyzing the intestinal structure and function of piglets. 1, pig intestinal structure and function 1.1 morphological structure pig digestive tract segments although
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With the development of China's feed industry, the demand for plant-based protein raw materials is increasing. From the changes in cake production over the years, the supply of miscellaneous meal is relatively stable, and there is no major change; the demand for soybean meal is rising, which is the main body of cake consumption, but the recent surge in soybean meal prices has put great cost pressure on feed enterprises. Aiming at the problems existing in pig feed, according to the quality characteristics of feed raw materials in different seasons and the physiological characteristics of pigs, the fermentation process was used to produce fermented soybean meal and fermented cottonseed meal, and the raw material ratio was scientifically carried out to develop non-resistant feed for growing and fattening pigs. In order to verify the weeping effect of this product on the production of fattening pigs, a special
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Animals need energy in the process of life-sustaining activities and production. The energy needed by animals comes from three organic substances in feed-carbohydrates, fats and proteins. The average emergy of these three main organic substances are 17.35, 39.54 and 23.64kJ/g respectively. Although the emergy of carbohydrate is lower than that of protein and fat, it comes from a wide range of sources. Therefore, the main source of animal energy is carbohydrate, among which starch, monosaccharide and oligosaccharide are the main sources of energy for monogastric animals, in addition, ruminants can obtain most of the required crude fiber fermentation by rumen microorganisms.
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The cost of raising pigs includes pig farm construction, breeding pigs, feed, medicine and labor, of which feed costs account for about 70%, which is the largest input in pig production. With the increase in the price of feed ingredients, the cost of feed accounts for an increasing proportion of the cost of raising pigs. Therefore, how to prepare diets according to the nutritional needs of pigs and improve the feed conversion rate of pigs is an important task for pig production. Using the "ideal amino acid model" raw materials, especially soybean meal relative to corn prices increase, farmers will take into account the cost of feed, livestock and poultry feed production costs mostly depend on the price of protein sources, through the best amino acid balance.
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When choosing the protein source of the diet of early weaned piglets, we should consider the digestibility of protein, the balance of amino acids, palatability and whether it can provide immunity for piglets. The main amino acid limiting the performance of early weaned piglets is lysine, and most studies have shown that the growth rate and feed conversion rate of piglets increase with the increase of lysine content. Owen et al. (1995c) reported that isolated early weaned piglets required 1.65-1.80 of lysine in the diet. For maximum production performance, the other amino acids must be maintained in appropriate proportions with lysine. However, there is also evidence that early
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1 Systematic Nutrition Concept of Sows The systematic nutrition concept of sows is mainly based on the adoption of different nutritional control strategies and the formulation of corresponding feeding technical strategies for sows in the same stages (including breeding, pregnancy, lactation and empty pregnancy) during the reserve period, immature breeding period (1-2 births) and mature breeding period (3-6), so as to give full play to the reproductive performance of sows throughout their lives more effectively. Increase the annual productivity of the sow. 2 the use of unconventional plant feed resources combined with local feed resources, according to local conditions of the use of local unconventional feed resources, can effectively reduce the cost of feed. Improve economic efficiency. But...
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Appetite maintenance Many experienced pig farms will also encounter the problem of sows not eating after delivery, so sow appetite maintenance is particularly important. There are three main points. One is to take material restriction measures for prenatal sows with moderate fat condition, so that sows can form a strong appetite before delivery and continue to give birth. The second is that the first sip of water drunk by sows after delivery is preferably warm bran salt soup, which can effectively prevent gastric discomfort caused by drinking. The third is to strictly follow the daily increase in feeding plan within one week after delivery. Of course, postpartum vaccination is also a very effective measure, with special attention to the prevention of mastitis and metritis. Postpartum milk guarantee sow milk is good
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Pork has always played an important role in the meat industry. With the development of economy and the exposure of food safety problems, people's requirements for food are getting higher and higher, and the quality of pork is also concerned. Pork color is an intuitive impression index, which is affected by many factors, such as pig breed, sex, age, slaughter method, anatomical location and so on, but mainly depends on the content of oxymyoglobin. As the most intuitive standard for evaluating pork quality, the impact of pork color on sales is becoming more and more important. In addition to some of the above factors, pork color is also affected by some feed additives. 1 vitamin on pork meat color shadow
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