Feed additive for sows at early pregnancy period
A feed additive, a technology for breeding sows, applied in the field of pig feed, can solve the problems of reducing the performance of sows, reducing lifespan and production efficiency, and achieving the effects of improving the survival rate of embryos, achieving good effects and increasing benefits.
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Embodiment 1
[0024] A feed additive used for sows in early pregnancy, obtained by the following preparation method:
[0025] 1) Raw material processing: grind fresh immature Luo Han Guo and fallen Luo Han Guo to remove the fluff on the surface of Luo Han Guo;
[0026] 2) Subcritical water extraction: crush the raw materials obtained in the previous step until the particle size is less than 0.5mm, add deionized water of equal weight, and perform subcritical water extraction. The extraction temperature is 120-160°C and the pressure is 5-8MPa. The extraction time is 10-15min. After the extraction is completed, release the pressure and collect the extract;
[0027] 3) Concentration: Concentrate the extract obtained in the previous step into a thick paste with a relative density of 1.10-1.15 at 70°C to obtain.
Embodiment 2
[0029] A feed additive used for sows in early pregnancy, obtained by the following preparation method:
[0030] 1) Raw material processing: wipe fresh immature Luo Han Guo and fallen Luo Han Guo to remove the fluff on the surface of Luo Han Guo;
[0031] 2) Subcritical water extraction: crush the raw materials obtained in the previous step until the particle size is less than 0.5mm, add deionized water of equal weight, and perform subcritical water extraction. The extraction temperature is 120-160°C and the pressure is 5-8MPa. The extraction time is 10-15min. After the extraction is completed, release the pressure and collect the extract;
[0032] 3) Concentration: Concentrate the extract obtained in the previous step into a thick paste with a relative density of 1.10-1.15 at 70°C to obtain.
experiment example
[0040] Feed additives of the present invention were fed respectively in pig farms of our company.
[0041] Embodiment 1 group (percentage by weight): corn 30%, soybean meal 20%, fish meal 25%, bran 15%, brown sugar 4%, vegetable oil 2%, multivitamin 1%, embodiment 1 additive 3%;
[0042] Comparative example 1 group (percentage by weight): corn 30%, soybean meal 20%, fish meal 25%, bran 15%, brown sugar 4%, vegetable oil 2%, multivitamin 1%, comparative example 1 additive 3%;
[0043] Comparative example 2 groups (percentage by weight): corn 30%, soybean meal 20%, fish meal 25%, bran 15%, brown sugar 4%, vegetable oil 2%, multivitamin 1%, comparative example 2 additive 3%;
[0044] Control group (percentage by weight): 30% corn, 25% soybean meal, 25% fish meal, 13% bran, 4% brown sugar, 2% vegetable oil, and 1% multivitamin.
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