Detailed Explanation of Feed Formula Design for Sows During Lactation
Feed Formula Design Plan for Pigs During Lactation (Requesting Sticky)
Sows during lactation need large amounts of nutrients to support milk production. During peak lactation, the sow's milk production capacity exceeds the nutrients taken in from feed and the nutrients exported in milk, causing the sow's body condition to decline rapidly. Formulating high-quality, high-nutrient-density feed for lactating sows is the best way to resolve this contradiction.
Feed Formula 1: Lactation Feed Formula 1 in Table 4-3 avoids as much as possible the use of high-volume feeds such as alfalfa and rice hull bran. In lactation feed formula design, unknown nutritional factors appear less important; this formula uses high-energy feed corn, high-protein fish meal, and soybean meal as much as possible, minimizing the volume of the compound feed and maximizing nutrient concentration as much as possible. The formula also uses synthetic amino acids to further strengthen the first limiting amino acid and improve the utilization efficiency of feed protein. To ensure milk quality, the amounts of trace ingredients in the formula remain unchanged from those in the gestation feed. Compound feed produced with this formula, when used to feed high-yielding sows nursing about 10-15 piglets, can achieve very ideal lactation and nursing results.
Feed Formula 2: Designed to be of medium quality. The main feature is that the digestible energy content of the formula is not high enough, and high-volume feeds such as rice hull bran and wheat bran make up a relatively large proportion, so the compound feed also appears somewhat bulky after production. To a certain extent, this affects the sow's effective feed intake of nutrients. Although the content of other main nutrients in this formula is similar to Lactation Feed Formula 1, effective intake will not be significantly affected. Therefore, this formula is more suitable for sows nursing about 10 piglets. For high-yielding sows, it may cause greater weight loss during lactation and affect reproductive performance in the next reproductive cycle.
Feed Formula 3: The energy level is lower than that of Lactation Feed Formula 2, the balance between energy and other nutrients is not sufficient, and the protein content in the compound feed appears excessive. However, this formula fully reflects the characteristic of using plant by-product feeds and is a typical example of a compound feed formula for lactating sows. When this formula is used for sows nursing 8-10 piglets, combined with careful feeding management, lactation and nursing results are also quite good. If early weaning is practiced for the sows, it will not seriously affect the sow's body condition.
In production practice, some feed formulas with relatively good feeding results have been summarized, and their nutrient content per kilogram is basically close to the feeding standards for lean-type growing-finishing pigs. Pig farms and specialized pig-raising households can selectively apply them according to local conditions and their own feed sources.
I. Examples of formulas for the 10-20 kg stage
Formula 1: corn 48.6%, wheat bran 15%, rice bran 15%, soybean cake 15%, yeast powder 5.0%, calcium carbonate 0.8%, additives 0.2%, salt 0.4%. The digestible energy of this formula is 12.93 MJ/kg, crude protein 16.1%, lysine 0.75%, methionine + cystine 0.59%, calcium 0.59%, phosphorus 0.56%.
Formula 2: corn 48%, broken rice 10%, rice bran 10%, wheat bran 10%, soybean cake 10%, fish meal 8%, green feed 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%, 37% rice bran 6.5%, soybean cake 19.0%, shell powder 1.2%, salt 0.3%. The digestible energy of this formula is 12.52 MJ/kg, crude protein 15.5%, lysine 0.76%.
II. Examples of formulas for the 20-60 kg stage
Formula 1: corn 59.3%, wheat bran 20%, 37% rice bran 6.8%, soybean 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%, soybean 6.6%, rapeseed cake 8.0%, fish meal 4%, stone powder 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%, cottonseed cake 10%, shell powder 1.0%, salt 0.5%. The digestible energy of this formula is 12.56 MJ/kg, crude protein 14.4%, calcium 0.52%, phosphorus 0.44%.
III. Examples of formulas for the 60-90 kg stage
Formula 1: corn 38.0%, wheat 7.5%, barley 31.5%, wheat bran 10.0%, cottonseed cake 5.0%, soybean 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%, 37% rice bran 7.2%, soybean cake 9.1%, shell powder 1%, salt 0.3%. The digestible energy of this formula is 12.56 MJ/kg, crude protein 12.2%, lysine 0.54%.
Formula 3: corn 60.6%, rice bran 18%, wheat bran 10%, soybean cake 10%, calcium carbonate 0.8%, salt 0.4%, vitamin additives 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%.
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Study first, study first
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The title does not match the content. It is a reprinted article, and it is also missing some tables.
Feed Formula 1: Lactation Feed Formula 1 in Table 4-3 avoids as much as possible the use of high-volume feeds such as alfalfa and rice hull bran. In lactation feed formula design, unknown nutritional factors appear less important; this formula uses high-energy feed corn, high-protein fish meal, and soybean meal as much as possible, minimizing the volume of the compound feed and maximizing nutrient concentration as much as possible. The formula also uses synthetic amino acids to further strengthen the first limiting amino acid and improve the utilization efficiency of feed protein. To ensure milk quality, the amounts of trace ingredients in the formula remain unchanged from those in the gestation feed. Compound feed produced with this formula, when used to feed high-yielding sows nursing about 10-15 piglets, can achieve very ideal lactation and nursing results.
Feed Formula 2: Designed to be of medium quality. The main feature is that the digestible energy content of the formula is not high enough, and high-volume feeds such as rice hull bran and wheat bran make up a relatively large proportion, so the compound feed also appears somewhat bulky after production. To a certain extent, this affects the sow's effective feed intake of nutrients. Although the content of other main nutrients in this formula is similar to Lactation Feed Formula 1, effective intake will not be significantly affected. Therefore, this formula is more suitable for sows nursing about 10 piglets. For high-yielding sows, it may cause greater weight loss during lactation and affect reproductive performance in the next reproductive cycle.
Feed Formula 3: The energy level is lower than that of Lactation Feed Formula 2, the balance between energy and other nutrients is not sufficient, and the protein content in the compound feed appears excessive. However, this formula fully reflects the characteristic of using plant by-product feeds and is a typical example of a compound feed formula for lactating sows. When this formula is used for sows nursing 8-10 piglets, combined with careful feeding management, lactation and nursing results are also quite good. If early weaning is practiced for the sows, it will not seriously affect the sow's body condition.
In production practice, some feed formulas with relatively good feeding results have been summarized, and their nutrient content per kilogram is basically close to the feeding standards for lean-type growing-finishing pigs. Pig farms and specialized pig-raising households can selectively apply them according to local conditions and their own feed sources.
I. Examples of formulas for the 10-20 kg stage
Formula 1: corn 48.6%, wheat bran 15%, rice bran 15%, soybean cake 15%, yeast powder 5.0%, calcium carbonate 0.8%, additives 0.2%, salt 0.4%. The digestible energy of this formula is 12.93 MJ/kg, crude protein 16.1%, lysine 0.75%, methionine + cystine 0.59%, calcium 0.59%, phosphorus 0.56%.
Formula 2: corn 48%, broken rice 10%, rice bran 10%, wheat bran 10%, soybean cake 10%, fish meal 8%, green feed 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%, 37% rice bran 6.5%, soybean cake 19.0%, shell powder 1.2%, salt 0.3%. The digestible energy of this formula is 12.52 MJ/kg, crude protein 15.5%, lysine 0.76%.
II. Examples of formulas for the 20-60 kg stage
Formula 1: corn 59.3%, wheat bran 20%, 37% rice bran 6.8%, soybean 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%, soybean 6.6%, rapeseed cake 8.0%, fish meal 4%, stone powder 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%, cottonseed cake 10%, shell powder 1.0%, salt 0.5%. The digestible energy of this formula is 12.56 MJ/kg, crude protein 14.4%, calcium 0.52%, phosphorus 0.44%.
III. Examples of formulas for the 60-90 kg stage
Formula 1: corn 38.0%, wheat 7.5%, barley 31.5%, wheat bran 10.0%, cottonseed cake 5.0%, soybean 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%, 37% rice bran 7.2%, soybean cake 9.1%, shell powder 1%, salt 0.3%. The digestible energy of this formula is 12.56 MJ/kg, crude protein 12.2%, lysine 0.54%.
Formula 3: corn 60.6%, rice bran 18%, wheat bran 10%, soybean cake 10%, calcium carbonate 0.8%, salt 0.4%, vitamin additives 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%.
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Study first, study first
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The title does not match the content. It is a reprinted article, and it is also missing some tables.