Design Scheme of Feed Formula for Pig during lactation (Shenjing)

During the lactation period, sows need a lot of nutrients to satisfy lactation. During the peak period of lactation, the lactation ability of sows is greater than that of feed intake and less than the amount of nutrients excluded from milk, and the body condition of sows decreases rapidly. feeding lactating sows with high quality and high nutrient concentration feed It is the best way to solve this contradiction. Feed formula 1: in Table 4, Mur3, lactation feed formula 1 avoids the use of large solvent feed such as alfalfa and bran as far as possible. In the design of lactation feed formula, nutrition unknown factors are not very important. This formula uses high energy feed corn, high protein content feed fish meal and soybean meal as far as possible to minimize the volume of formula feed. The concentration of nutrients should be increased as much as possible. the formula also uses synthetic amino acids to further strengthen the first limiting amino acids and improve the utilization efficiency of feed protein. in order to ensure the quality of lactation, the trace components in the formula keep the amount of pregnancy feed unchanged. The formula feed is used to feed about 10-15 high-yielding sows, which can achieve very ideal lactation. Lactation effect. Feed formula 2: the design quality is medium. The main characteristics are that the digestible energy content of the formula is not high enough, the proportion of large volume feed bran and wheat bran is large, and the volume after producing compound feed appears to be too large. To a certain extent, it affects the effective intake of enuresis nutrients in sows. Although the content of other major nutrients in this formula is similar to that in lactation feed formula 1. The effective intake will not be significantly affected. Therefore, the formula is suitable for sows with about 10 piglets. For high-yielding sows, it may lead to greater weight loss during lactation and affect the reproductive performance of the next reproductive cycle. Feed formula 3: the energy level is lower than that of lactation feed formula 2, and the notes between energy and other nutrients are not balanced. The protein content in formula feed appears to be excessive. however, the formula fully reflects the characteristics of the use of plant by-product feed and a typical example of formula formula for lactating sows. The formula is used for 8-10 sows with a collection of careful feeding and management, lactation and feeding effect is also good. If the sow is weaned early, it will not seriously affect the physical condition of the sow. During production time Some feed formulations with good feeding effect were summarized, and their nutritional content per kilogram was basically close to the feeding standard of lean growing and fattening pigs. Pig farms and professional pig farmers can be selectively applied according to the local area and their own feed sources. 1. 10-20 kg stage formula 1 Corn 48.6%, wheat bran 15%, rice bran 15%, bean cake 15%, yeast 5.0%, calcium carbonate 0.8%, additive 0.2%, salt 0.4%. The digestible energy of each formula is 12.93% megaoke / kg, crude protein 16.1%, lysine 0.75%, methionine + cystine 0.59%, calcium 0.59%, phosphorus 0.56%. Formula 2, corn 48%, chopped rice bran 10% Wheat bran 10%, bean cake 10%, fish meal 8%, Qingke 2.5%, calcium carbonate 0.5%, calcium phosphate 0.5%, salt 0.5%. The digestible energy of this formula is 13.10 MJ / kg, crude protein 16.1%, lysine 0.80%, methionine + cystine 0.48%, calcium 0.80%, phosphorus 0.67%. Formula 3, corn 53%, wheat bran 20%, Panax notoginseng bran 6.5%, bean cake 19.0%, shell powder 1.2%, salt 0.3%. This formula has digestible energy 12.52 MJ / kg, crude protein 15.5%. Lysine 0.76%. II. 20-60 kg stage formula for example formula 1, corn 59.3%, wheat bran 20%, Panax notoginseng bran 6.8%, bean cake 12.4%, shell powder 1.2% salt 0.3. The digestible energy of this formula is 12.52 MJ / kg, crude protein 15.9%, lysine 0.85%, methionine + cystine 0.55%, calcium 0.63%, phosphorus 0.64%. Formula 2, corn 45%, wheat bran 35%, soybeans 6.6%, rapeseed cake 8.0%, fish meal 4%, stone meal 1. Salt 0.4%. The digestible energy of this formula is 12.18 MJ / kg, crude protein 15.9%, lysine 0.85%, methionine + cystine 0.55%, calcium 0.63%, phosphorus 0.64%. Formula 3, corn 37%, barley 34.5%, wheat bran 9%, rapeseed cake 8%, cotton seed cake 10%, shell powder 1.0%, salt 0.5%. This formula has digestible energy of 12.56 MJ / kg, crude protein 14.4%, calcium 0.52%, phosphorus 0.44%. For example, formula 1, corn 38.0%, wheat 7.5%, barley 31.5% wheat bran 10.0%, cottonseed cake 5.0%, bean cake 3.0%, fish meal 3.5%, bone meal 1%, salt 0.5%. The digestible energy of this formula is 12.73 MJ / kg, crude protein 13.3%, calcium 0.51%, phosphorus 0.41%. Formula 2, corn 62.4%, wheat bran 20%, notoginseng bran 7.2%, bean cake 9.1%. Shell powder 1%, salt 0.3%. This formula can digest 12.56 megajoules / kg, crude protein 12.2%, lysine 0.54%. Formula 3, corn 60.6%, rice bran 18%, wheat bran 10%, bean cake 10%, calcium carbonate 0.8%, salt 0.4%, vitamin additive 0.2%. The digestible energy of this formula is 13.86 MJ / kg, crude protein 14.7%, lysine 0.53%, methionine + cystine 0.42%, calcium 0.67%, phosphorus 0.48%. Reprinted articles, but also the lack of some forms.