CN113317408A - Feed additive capable of remarkably improving production performance of pregnant sows and pigsty environment and using method thereof - Google Patents
Feed additive capable of remarkably improving production performance of pregnant sows and pigsty environment and using method thereof Download PDFInfo
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- CN113317408A CN113317408A CN202110688121.XA CN202110688121A CN113317408A CN 113317408 A CN113317408 A CN 113317408A CN 202110688121 A CN202110688121 A CN 202110688121A CN 113317408 A CN113317408 A CN 113317408A
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- 239000003674 animal food additive Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 title abstract description 7
- 244000063299 Bacillus subtilis Species 0.000 claims abstract description 8
- 235000014469 Bacillus subtilis Nutrition 0.000 claims abstract description 8
- 240000001046 Lactobacillus acidophilus Species 0.000 claims abstract description 8
- 235000013956 Lactobacillus acidophilus Nutrition 0.000 claims abstract description 8
- 229940039695 lactobacillus acidophilus Drugs 0.000 claims abstract description 8
- 241000235342 Saccharomycetes Species 0.000 claims abstract 2
- 239000006027 corn-soybean meal Substances 0.000 claims description 11
- 239000011782 vitamin Substances 0.000 claims description 10
- 235000013343 vitamin Nutrition 0.000 claims description 10
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- 229930003231 vitamin Natural products 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 150000003722 vitamin derivatives Chemical class 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims description 7
- 239000004472 Lysine Substances 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- PVNIIMVLHYAWGP-UHFFFAOYSA-N Niacin Chemical compound OC(=O)C1=CC=CN=C1 PVNIIMVLHYAWGP-UHFFFAOYSA-N 0.000 claims description 6
- 235000005911 diet Nutrition 0.000 claims description 6
- 230000037213 diet Effects 0.000 claims description 6
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- 239000011616 biotin Substances 0.000 claims description 3
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- 235000019733 Fish meal Nutrition 0.000 claims description 2
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- 239000004467 fishmeal Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
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- 235000012424 soybean oil Nutrition 0.000 claims description 2
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- 239000004575 stone Substances 0.000 claims description 2
- 210000003022 colostrum Anatomy 0.000 abstract description 12
- 235000021277 colostrum Nutrition 0.000 abstract description 12
- 235000016709 nutrition Nutrition 0.000 abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 11
- 230000035935 pregnancy Effects 0.000 abstract description 10
- 230000035764 nutrition Effects 0.000 abstract description 9
- 230000033228 biological regulation Effects 0.000 abstract description 7
- 229910021529 ammonia Inorganic materials 0.000 abstract description 5
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- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
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- 108090000978 Interleukin-4 Proteins 0.000 description 2
- WSMYVTOQOOLQHP-UHFFFAOYSA-N Malondialdehyde Chemical compound O=CCC=O WSMYVTOQOOLQHP-UHFFFAOYSA-N 0.000 description 2
- 102000019197 Superoxide Dismutase Human genes 0.000 description 2
- 108010012715 Superoxide dismutase Proteins 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
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- 238000011161 development Methods 0.000 description 2
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- PNNCWTXUWKENPE-UHFFFAOYSA-N [N].NC(N)=O Chemical compound [N].NC(N)=O PNNCWTXUWKENPE-UHFFFAOYSA-N 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 229940024606 amino acid Drugs 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/30—Feeding-stuffs specially adapted for particular animals for swines
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/10—Animal feeding-stuffs obtained by microbiological or biochemical processes
- A23K10/16—Addition of microorganisms or extracts thereof, e.g. single-cell proteins, to feeding-stuff compositions
- A23K10/18—Addition of microorganisms or extracts thereof, e.g. single-cell proteins, to feeding-stuff compositions of live microorganisms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/20—Animal feeding-stuffs from material of animal origin
- A23K10/22—Animal feeding-stuffs from material of animal origin from fish
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
- A23K10/37—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms from waste material
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/105—Aliphatic or alicyclic compounds
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/142—Amino acids; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/158—Fatty acids; Fats; Products containing oils or fats
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/174—Vitamins
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/22—Compounds of alkali metals
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/24—Compounds of alkaline earth metals, e.g. magnesium
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/26—Compounds containing phosphorus
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/30—Oligoelements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/87—Re-use of by-products of food processing for fodder production
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Animal Husbandry (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Physiology (AREA)
- Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Molecular Biology (AREA)
- Microbiology (AREA)
- Mycology (AREA)
- Botany (AREA)
- Biomedical Technology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Biochemistry (AREA)
- Birds (AREA)
- Marine Sciences & Fisheries (AREA)
- Fodder In General (AREA)
- Feed For Specific Animals (AREA)
Abstract
The invention relates to a feed additive capable of obviously improving the production performance of pregnant sows and the environment of a pigsty and a using method thereof, wherein the feed additive is prepared from saccharomycetes, lactobacillus acidophilus and bacillus subtilis according to the mass ratio of 1: 0.8-1.2: 0.8-1.2, and has viable count ≧ 1.1 × 109CFU/g, the feed additive is added into basic daily ration at the later stage of pregnancy of the sow to serve as a special feed for the pregnant sow, so that the litter size of the pregnant sow, the healthy litter size, the weight of the newborn litter and the weight of the weaning litter can be obviously increased; the immunity of the pregnant sow is improved, and the IgG and IgM levels in the colostrum of the pregnant sow are improved; the concentration of ammonia, carbon dioxide and PM2.5 in the pregnant sow house is obviously reduced. The special feed added with the feed additive for the pregnant sows, provided by the invention, is used for adjusting the basic ration formula of the sows respectively in the later stage of pregnancy and the lactation period, so that the nutrition regulation and control of the sows in different periods are realized.
Description
Technical Field
The invention belongs to the technical field of feed additives, and particularly relates to a feed additive capable of remarkably improving the production performance of pregnant sows and the environment of a pigsty and a using method thereof.
Background
The number of the sows capable of breeding in the big country of pig breeding in China accounts for more than 50% of the number of the sows capable of breeding all over the world, but the reproductive performance of the sows in China still has a larger development space compared with that of the sows in the developed countries abroad. The benefit of pig breeding depends on the reproductive performance of the sows to a great extent, so that the improvement of the reproductive performance of the sows has great promotion effect on the development of the pig breeding industry in China. The reproductive traits of the sows belong to low heritability traits, and the heritability of most of the reproductive traits such as litter size and the like is below 0.1, which indicates that main factors influencing the reproductive performance of the sows are non-genetic factors, wherein the nutrition regulation and control factors have great influence on the reproductive performance of the sows, and the excellent reproductive performance of the sows depends on the nutrition regulation and control to a great extent. The nutrition of the sows is an important part in the production of the sows, and researches show that the nutrition regulation and control factors influencing the reproductive performance of the sows mainly comprise regulation and control factors such as protein factors, amino acid factors, energy levels, vitamins, trace elements, daily ration fiber levels, feed additives and the like.
The feed additive can supplement trace elements required by the body of the sow and has the functions of resisting inflammation and sterilizing so as to prevent certain unnecessary diseases of animals and improve the disease resistance. However, most of the existing feeds improve the resistance of animals by adding antibiotics, so that the animals have drug resistance, and a plurality of pathogenic microorganisms appear in metabolites, thereby greatly influencing the environment and even reducing the quality of livestock and poultry products. Under the background that the use of feed antibiotics is gradually forbidden, the search for safe and efficient feed additives to ensure the continuous improvement of the production performance of animals is a research hotspot of the feed industry.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a feed additive capable of obviously improving the productivity of pregnant sows and the environment of a pigsty and a using method thereof.
The feed additive can obviously improve the litter size of pregnant sows, the weight of newborn litter and the weight of weaning litter; improving the immunity of pregnant sows; the ammonia, carbon dioxide and PM2.5 concentrations in pregnant sows houses are significantly reduced.
The technical scheme adopted by the invention is as follows:
a special feed additive for pregnant sows is prepared from yeast, lactobacillus acidophilus and bacillus subtilis according to a mass ratio of 1: 0.8-1.2: 0.8-1.2, and has viable count ≧ 1.1 × 109CFU/g。
A special feed for pregnant sows comprises the following raw materials: the feed additive and basic ration.
2-3g of the feed additive is added into each kilogram of basic daily ration.
The basic ration is a corn-soybean meal type feed.
The corn-soybean meal type feed comprises the following raw materials:
61 parts of corn, 10-13 parts of bran, 14-17 parts of bean pulp, 0.8-1.3 parts of fish meal, 6-6.3 parts of expanded soybean, 0.6-0.8 part of stone powder, 1.5 parts of calcium hydrophosphate, 0.5 part of salt, 0.8 part of soybean oil, 0.3 part of lysine and 1 part of premix.
In each kilogram of the corn-soybean meal type feed, the premix contains the following nutritional ingredients:
vitamin B11.0mg, vitamin B22.3mg of vitamin B61.5mg, vitamin B120.01mg, vitamin A1160 IU, vitamin D178 IU, vitamin E10 IU and vitamin K32mg, nicotinic acid 12mg, pantothenic acid 10mg, folic acid 0.5mg, biotin 0.09mg, choline chloride 300mg, copper 4mg, zinc 53mg, iron 53mg, iodine 0.12mg, manganese 2mg, selenium 0.13 mg.
The corn-soybean meal type feed comprises the following nutritional components in percentage by weight: the digestion energy is 13.60MJ/kg, the crude protein is 14.5 percent, the lysine is 0.7 percent, the crude fiber is 4.5 percent, the calcium is 0.75 percent, and the phosphorus is 0.55 percent.
The corn-soybean meal type feed comprises the following nutritional components in percentage by weight: 14.31MJ/kg of digestion energy, 16.8 percent of crude protein, 0.85 percent of lysine, 4.8 percent of crude fiber, 0.85 percent of calcium and 0.55 percent of phosphorus.
The invention has the following beneficial effects:
(1) the feed additive provided by the invention is prepared from yeast, lactobacillus acidophilus and bacillus subtilis according to a mass ratio of 1: 0.8-1.2: 0.8-1.2, and has viable count ≧ 1.1 × 109CFU/g, the feed additive is added into basic daily ration at the later stage of pregnancy of the sow to serve as a special feed for the pregnant sow, so that the litter size of the pregnant sow, the healthy litter size, the weight of the newborn litter and the weight of the weaning litter can be obviously increased; improving immunity of pregnant sow and improving pregnancyIgG, IgM levels in the colostrum of the pregnant sow; the concentration of ammonia, carbon dioxide and PM2.5 in the pregnant sow house is obviously reduced.
(2) The special feed added with the feed additive for the pregnant sows, provided by the invention, is used for adjusting the basic ration formula of the sows respectively in the later stage of pregnancy and the lactation period, so that the nutrition regulation and control of the sows in different periods are realized.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are merely exemplary of the invention, and not of the invention in its entirety. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the following examples, 100g was represented by 1 part by weight, and the raw materials used in the following examples were all commercially available.
Example 1
The embodiment provides a special feed additive for pregnant sows, which is prepared from yeast, lactobacillus acidophilus and bacillus subtilis according to a mass ratio of 1: 1: 1 composition containing viable bacteria number ≧ 1.1 × 109CFU/g。
The embodiment also provides a special feed for pregnant sows, which comprises basic daily ration and a feed additive, wherein 2-3g of the feed additive is added into each kilogram of the basic daily ration.
The basic ration is a corn-soybean meal type feed, and the basic ration formula of the sow is adjusted in the later gestation period and the lactation period respectively, so that the nutrition regulation and control of the sow in different periods are realized.
The raw material composition and nutritional levels of the basal ration are shown in table 1.
TABLE 1 raw Material composition and Nutrition level of basal diet
In Table 1, the digestibility and the lysine content are calculated values, and the content of the nutrient is found by calculating the content of the nutrient in each raw material in the nutrient table multiplied by the ratio of the raw materials.
The premix provides the following nutritional ingredients for each kilogram of diet:
vitamin B11.0mg, vitamin B22.3mg of vitamin B61.5mg, vitamin B120.01mg, vitamin A1160 IU, vitamin D178 IU, vitamin E10 IU and vitamin K32mg, nicotinic acid 12mg, pantothenic acid 10mg, folic acid 0.5mg, biotin 0.09mg, choline chloride 300mg, copper 4mg, zinc 53mg, iron 53mg, iodine 0.12mg, manganese 2mg, selenium 0.13 mg.
Example 2
The present example provides a special feed additive for pregnant sows, which is different from example 2 only in that: the feed additive is prepared from yeast, lactobacillus acidophilus and bacillus subtilis according to a mass ratio of 1: 0.8: 0.8, the number of viable bacteria is ≧ 1.1 × 109CFU/g。
Example 3
The present example provides a special feed additive for pregnant sows, which is different from example 2 only in that: the feed additive is prepared from yeast, lactobacillus acidophilus and bacillus subtilis according to a mass ratio of 1: 1.2: 1.2 composition, and the number of viable bacteria is ≧ 1.1 × 109CFU/g。
Examples of the experiments
1. Test animals and groups
Selecting 36 large white pigs in the late gestation period (80 d) of the second gestation period, randomly dividing into a control group, a test group I and a test group II, wherein each group has 12 pigs, each pig is 1, the test pre-test period is 7d, the positive test period is from 87d of gestation to the end of lactation, the control group is fed with basic ration (the formula and the nutrition level are shown in table 1), and 2g/kg and 3g/kg of feed additives are respectively added into the basic ration in the test group I and the test group II.
2. Feeding management
Feeding pregnant sows in independent units, every independent unit includes two circles, and 6 are circled every, and pregnant sows feed 3 times every day, and sow feed intake increases according to the gestation stage gradually, 7d before the parturition, gets into the delivery room that disinfects after the shower, and the feed is no longer fed for 10h before the parturition, and the parturition process is watched in real time, ensures quiet production environment simultaneously, wipes dry mucus behind the piglet output, and it keeps warm to notice the piglet.
3. Sample collection and processing
3.1 Collection of colostrum samples
The 3d endocrine milk after the delivery of the sow is called colostrum, the collection of the colostrum is completed within 2h after the sow starts the delivery in the test, 4 heads are collected in each group, the colostrum is collected at the root of the head of the light milking in a sterile container and is stored in a 20mL sterile EP tube to be tested at the temperature of minus 20 ℃.
3.2 blood Collection and serum preparation
After the test is finished and before weighing, randomly selecting 5 test pigs in each group, fasting for 12h, freely drinking water, collecting blood from the anterior vena cava, standing for 10min at room temperature, centrifuging for 10min at 3000r/min to prepare serum, and storing at-20 ℃ to measure the biochemical indexes of the serum in time.
4. Index and method of measurement
4.1 Productivity of pregnant sows
And (4) counting the birth weight of the piglets (weighing immediately after wiping off the mucus on the body surfaces of the piglets), the litter size of the piglets which is healthy (weak piglets with the weight of less than 800 g), the birth weight of the litter and the weight of weaning litter according to the delivery results. The newborn weight and the litter weight of the piglets are weighed within 12h of birth.
4.2 measurement of serum indices
The measurement was carried out using a plate reader (ELX-808) and a semi-automatic biochemical analyzer (HITACHI 7070). Alkaline phosphatase (AKP), aspartate Aminotransferase (AST), alanine Aminotransferase (ALT), calcium, phosphorus, urea nitrogen (BUN), Albumin (ALB), Total Protein (TP), total cholesterol (T-CHOL); serum antioxidant index: malondialdehyde (MDA), superoxide dismutase (SOD), and total antioxidant capacity (T-AOC). Serum immune indices were determined using an enzyme-linked immunosorbent assay (ELISA): immunoglobulin A, M, G, interleukin-2 (IL-2), interleukin-4 (IL-4), complement protein 3(C3), complement protein 4(C4), and the like. Reagents used for testing the above indexes were purchased from Nanjing as a built organism.
4.3 determination of air quality index in pig House
Monitoring the air quality in the piggery, including the harmful gas ammonia (NH)3) Hydrogen sulfide (H)2S), carbon dioxide (CO)2) PM2.5 and PM 10. 6 detection sites were selected according to the pigsty structure. CO was performed for 7:00, 11:00, 14:00 and 18:00, 4 time periods per day2、NH3、H2S, PM 2.5.5 and PM10, and the like, and continuously monitors. The measurement is carried out by adopting a portable all-in-one gas detector (BH-4A), and the unit of output data of the detector is ppm. The concentration of the mass number of the pollutant per cubic meter of the atmosphere is expressed in terms of mass-volume concentration in mg/m3And (4) showing.
mg/m3The conversion relation with ppm is as follows:
X＝M/22.4·ppm·[273/(273+T)]*(Ba/101325)
in the formula:
x-the concentration of a noxious gas in milligrams per standard cubic meter; ppm-measured volume concentration value; m-the molecular mass of a certain harmful gas; t-temperature; ba-pressure.
5. Data processing
The experimental data were collated in Excel 2016 and analyzed for One-way ANOVA (One-way ANOVA) using SPSS 22.0 statistical software and multiple comparisons were made with LSD. The experimental results are expressed as mean ± standard deviation, with significance level set as P < 0.05.
6. Test results and analysis
6.1 Effect of feed additives on the Productivity of pregnant sows
Table 2 shows the effect of feed additives on the performance of pregnant sows. As can be seen from Table 2, the birth weight of the piglets of the control group is significantly higher than that of the test group (P is less than 0.05), and is respectively 11.20 percent and 16.81 percent higher than that of the piglets of the test group I and the test group II (P is less than 0.05); the litter survival number of the test group I and the test group II is respectively 17.37 percent higher and 20.07 percent higher than that of the control group, and the difference is obvious (P is less than 0.05); the Jian' er number and the birth nest weight of the test group I are obviously higher than those of the other two groups, and the test group is obviously higher than that of the control group (P is less than 0.05); the weaning weight of the control group piglets is not obviously different from that of the test group (P is more than 0.05); the weight of the weaned litter of the piglets in the test group is obviously higher than that of the piglets in the control group (P < 0.05).
TABLE 2 influence of feed additives on the Productivity of pregnant sows
Note: the data shoulder marks of the same row have no letters or the same letters indicate that the difference is not significant (P >0.05), and different lower case letters indicate that the difference is significant (P < 0.05).
6.2 Effect of feed additives on colostrum immune index of lactating sows
Table 3 shows the effect of the feed supplement on the colostrum immunity index of lactating sows. As can be seen from Table 3, the IgG level in the colostrum of the test group I is significantly higher than that of the other 2 groups, the IgG level of the test group I and the IgG level of the test group II are both higher than that of the control group, and the difference between the two groups is significant (P is less than 0.05) in all 3 groups; the IgM level in colostrum rises along with the increase of the feed additive level, when the addition amount is 3g/kg, the IgM level is highest, the difference between 3 groups is obvious (P is less than 0.05), and the IgM level of colostrum in the test group II is improved by 28.60 percent compared with that of a basic control group; the IgA levels were also found to be highest in test group II, significantly higher than in the other two groups, with the lowest difference in test group I being significant (P < 0.05).
TABLE 3 influence of feed additives on colostrum immune index of lactating sows
Note: the data shoulder marks of the same row have no letters or the same letters indicate that the difference is not significant (P >0.05), and different lower case letters indicate that the difference is significant (P < 0.05).
6.3 influence of feed additive on air index in pregnant sow shed
Table 4 shows the effect of the feed additive on the air index in the pregnant sow pen. As can be seen from Table 5, testTest group NH in pregnant sow house3The concentration is obviously reduced and is obviously lower than that of a control group (P is less than 0.05); test group and control group H2S is low and the difference is not significant (P is more than 0.05); CO 22The concentration is in a descending trend, and the test group II is obviously lower than the test group I and the control group (P is less than 0.05); the total dust amount of the test group I is lower than that of the test group II and the control group, but the difference is not significant (P is more than 0.05); PM2.5 test group II was significantly lower than the control group (P < 0.05).
TABLE 4 influence of feed additives on air indicators in pregnant sows' houses
Note: the data shoulder marks of the same row have no letters or the same letters indicate that the difference is not significant (P >0.05), and different lower case letters indicate that the difference is significant (P < 0.05).
The feed additive provided by the invention is prepared from yeast, lactobacillus acidophilus and bacillus subtilis according to a mass ratio of 1: 0.8-1.2: 0.8-1.2, and has viable count ≧ 1.1 × 109CFU/g, the feed additive is added into basic daily ration at the later stage of gestation of the sows and is used as a special feed for the pregnant sows, so that the number born alive and the weight of the newborn litter of the pregnant sows can be obviously increased, the levels of IgG and IgM in the newborn piglets of the pregnant sows are increased, the concentrations of ammonia, carbon dioxide and PM2.5 in the pregnant sows are obviously reduced, and the air quality in the sows is improved. The recommended addition level of the feed additive in the pregnant sow feed is 2 g/kg.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A special feed additive for pregnant sows is characterized in that the feed additive is prepared from saccharomycetes, lactobacillus acidophilus,The bacillus subtilis is prepared by mixing the following components in a mass ratio of 1: 0.8-1.2: 0.8-1.2, and has viable count ≧ 1.1 × 109CFU/g。
2. The special feed for pregnant sows is characterized by comprising the following raw materials: the feed additive and basal ration of claim 1.
3. The special feed for pregnant sows according to claim 2, wherein the feed additive is added in an amount of 2-3g per kg of basal diet.
4. The special feed for pregnant sows according to claim 3, wherein the basal ration is a corn-soybean meal type diet.
5. The special feed for pregnant sows according to claim 4, wherein the corn-soybean meal type diet comprises the following raw materials:
61 parts of corn, 10-13 parts of bran, 14-17 parts of bean pulp, 0.8-1.3 parts of fish meal, 6-6.3 parts of expanded soybean, 0.6-0.8 part of stone powder, 1.5 parts of calcium hydrophosphate, 0.5 part of salt, 0.8 part of soybean oil, 0.3 part of lysine and 1 part of premix.
6. The special feed for pregnant sows according to claim 4, wherein the premix comprises the following nutrients per kg of the corn-soybean meal type diet:
vitamin B11.0mg, vitamin B22.3mg of vitamin B61.5mg, vitamin B120.01mg, vitamin A1160 IU, vitamin D178 IU, vitamin E10 IU and vitamin K32mg, nicotinic acid 12mg, pantothenic acid 10mg, folic acid 0.5mg, biotin 0.09mg, choline chloride 300mg, copper 4mg, zinc 53mg, iron 53mg, iodine 0.12mg, manganese 2mg, selenium 0.13 mg.
7. The special feed for pregnant sows according to claim 4, wherein the corn-soybean meal type diet comprises the following nutritional components: the digestion energy is 13.60MJ/kg, the crude protein is 14.5 percent, the lysine is 0.7 percent, the crude fiber is 4.5 percent, the calcium is 0.75 percent, and the phosphorus is 0.55 percent.
8. The special feed for pregnant sows according to claim 4, wherein the corn-soybean meal type diet comprises the following nutritional components: 14.31MJ/kg of digestion energy, 16.8 percent of crude protein, 0.85 percent of lysine, 4.8 percent of crude fiber, 0.85 percent of calcium and 0.55 percent of phosphorus.
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| CN114601062A (en) * | 2022-04-26 | 2022-06-10 | 华南农业大学 | Pregnant sow feed and application thereof |
| CN116349775A (en) * | 2023-03-07 | 2023-06-30 | 东北农业大学 | Feed additive for improving pig reproduction, immunity and disease resistance and preparation method thereof |
| WO2023213303A1 (en) * | 2022-05-05 | 2023-11-09 | 中国农业大学 | Method for improving anti-oxidation and nutrient transport capabilities of placental tissues of female livestock |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114601062A (en) * | 2022-04-26 | 2022-06-10 | 华南农业大学 | Pregnant sow feed and application thereof |
| WO2023213303A1 (en) * | 2022-05-05 | 2023-11-09 | 中国农业大学 | Method for improving anti-oxidation and nutrient transport capabilities of placental tissues of female livestock |
| CN116349775A (en) * | 2023-03-07 | 2023-06-30 | 东北农业大学 | Feed additive for improving pig reproduction, immunity and disease resistance and preparation method thereof |
| CN116349775B (en) * | 2023-03-07 | 2024-03-19 | 东北农业大学 | Feed additive for improving pig reproduction, immunity and disease resistance and preparation method thereof |
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