Composition and feed for preventing gastric ulcers in pigs

Abstract

As a novel composition for preventing gastric ulcer in pigs, a composition containing water-soluble dietary fibers is provided.

Description

[Technical Field]

[0001] The present invention relates to a composition and feed for preventing gastric ulcers in pigs. [Background technology]

[0002] It is known that pigs can develop gastric ulcers (Non-Patent Documents 1 to 3), the symptoms of which include anemia and bloody stools, and they often lead to death. There are a wide variety of causes that are thought to cause gastric ulcers in pigs, including infectious diseases such as hog cholera (legal), foot-and-mouth disease (legal), rinderpest (legal), malignant catarrhal fever (notifiable), swine erysipelas (notifiable), Helicobacter, trichostrongylus ruber, and ascariasis. Other causes include stress, feed particle size, stomach acid, acid administration, mycotoxins, vitamin B6 deficiency, vitamin A excess, and copper excess.

[0003] Generally, the percentage of pigs suffering from stomach ulcers is about 70% or more when the corn grain size is 400 μm, and there is data that the percentage of pigs dying from stomach ulcers is about 15%. For pig farmers, the economic loss caused by the death of a pig amounts to about 40,000 yen per pig.

[0004] Highly fluid feed has a shorter retention time in the stomach, which leads to the reflex secretion of strong gastric acid, which disrupts the proper pH distribution in each part of the stomach, causing the gastroesophageal region, which normally has a pH of 4.0 to 5.0, to become highly acidic (pH 2.0 to 1.9), which attacks the mucous membrane in that region (Non-Patent Document 5, Japan SPF Swine Research Association_21_24-27(2002)).

[0005] Thus, feeding highly fluid feed makes pigs more susceptible to developing erosions and ulcers. Furthermore, in feed containing fine grain (refined feed ingredients), if the particle size of the solids is very small, or if the feed is excessively crushed or the proportion of coarse particles is low, it is certain that adverse effects will be felt in the gastroesophageal region (Non-Patent Document 1, Journal of the Japanese Society of Veterinary Medicine 31-327 (1978)). Furthermore, it is known that the crushing strength of the raw feed to be pulverized and the compression form of the pulverized raw feed affect the gastric environment (Non-Patent Document 2). Therefore, it is believed that at least the pulverization of feed and compression processes such as extruder processing are the causes of gastric ulcer development.

[0006] As such, there is currently concern that the incidence of gastric ulcers in pigs will increase with the spread of feed that is not only highly fluid but also finely granular.

[0007] Administration of a compound such as pepstatin is known as a means for preventing gastric ulcers in pigs (Non-Patent Document 3, Journal of the Japan Pig Research Association 14_78 (1977)). Furthermore, attempts have been made to suppress the onset of gastric ulcers in pigs by feeding highly fluid feed together with water-insoluble dietary fiber, which is thought to have a long retention time in the stomach and to suppress the effects of gastric acid. As a similar measure, attempts have also been made to suppress the onset of gastric ulcers in pigs by using bedding (a general term for materials used in bedding, such as rice straw, sawdust, and rice husks) (Non-Patent Document 1, Journal of the Japan Veterinary Society 31-327 (1978); Non-Patent Document 4, Journal of the Japan Veterinary Society 14-141 (1977)). [Prior art documents] [Non-patent literature]

[0008] [Non-Patent Document 1] Journal of the Japanese Society of Veterinary Medicine 31_327(1978) [Non-patent document 2] Animal Feed Science and Technology 194(2014)113-120 [Non-patent document 3] Journal of the Japan Pig Research Institute 14_78(1977) [Non-patent document 4] Journal of the Japan Pig Research Institute 14_141(1977) [Non-Patent Document 5] Japan SPF Swine Research Society_21_24-27(2002) [Non-patent document 6] About Ecofeed, Ministry of Agriculture, Forestry and Fisheries<URL:https: / / www.maff.go.jp / j / chikusan / sinko / lin / l_siryo / ecofeed.html> [Non-Patent Document 7] "Various Test Results Publication (Fiber Gum Feed)", https: / / premium.ipros.jp / shima / catalog / detail / 470148 / Summary of the Invention [Problem to be solved by the invention]

[0009] However, the present inventors have found that conventional preventive agents for gastric ulcer in pigs are not necessarily effective in preventing gastric ulcer, and that a new preventive agent for gastric ulcer in pigs is needed. Therefore, an object of the present invention is to provide a new composition for preventing gastric ulcers in pigs. [Means for solving the problem]

[0010] As a result of extensive research into solving the above problems, the inventors discovered that the above problems could be solved by using a specific material with a previously unknown effect, and as a result of further research, they were able to complete the present invention.

[0011] That is, the present invention relates to at least the following inventions: [1] A composition for preventing gastric ulcers in pigs, comprising water-soluble dietary fiber. [2] The composition for preventing gastric ulcers in pigs according to [1] above, wherein the water-soluble dietary fiber is gum arabic. [3] A pig feed comprising the composition for preventing gastric ulcers in pigs according to [1] or [2] above together with feed. [4] The pig feed according to [3] above, wherein the feed further comprises food residues or food pomace and water. [5] The feed for pigs according to the above [3] or [4], wherein the content of the composition for preventing gastric ulcers is 0.001 to 0.1 by weight per 1 by weight of the feed. [6] The pig feed according to [3] above, which is in a solid form. [7] A method for raising pigs, comprising the step of feeding pigs the composition for preventing gastric ulcers in pigs according to [1] or [2] above or the pig feed according to any one of [3] to [6] above. [8] The method according to [7] above, wherein the pig feed is obtained by mixing a composition for preventing gastric ulcers in pigs with the feed. [9] The method according to [7] or [8] above, which comprises preventing gastric ulcers in pigs.

[10] The method according to any one of the above [7] to [9], wherein the water-soluble dietary fiber contained in the gastric ulcer preventive composition or pig feed is gum arabic. [Effects of the Invention]

[0012] According to the present invention, a composition and feed are provided that make it possible to prevent gastric ulcers in pigs. Water-insoluble dietary fiber, such as that in bedding, is believed to increase the retention of feed in the stomach and prevent gastric ulcers, and therefore is used as a material to prevent gastric ulcers in pigs. In contrast, water-soluble dietary fiber does not increase the gastric retention of feed and has properties different from those of water-insoluble dietary fiber. It has not been known that water-soluble dietary fiber is effective in preventing gastric ulcers. Considering these facts, the above-mentioned effects of the present invention are unexpected and particularly remarkable, which even a person skilled in the art could not predict based on the prior art.

[0013] According to the method for raising pigs of the present invention, which includes a step of feeding the pigs the above-mentioned composition for preventing gastric ulcers in pigs or pig feed, gastric ulcers in pigs can be prevented, which also leads to an improvement in the mortality rate and enables pigs to be raised with a higher yield. DETAILED DESCRIPTION OF THE INVENTION

[0014] In this specification, the term "addition" or "adding" means to bring two components, substances, or materials to be added into a mixed state. In other words, the expression "adding A to B" does not necessarily mean only adding A to B, but also includes adding B to A. In this specification, the terms "admixing," "mixing," and "blending" have similar meanings. In this specification, amounts and proportions (concentrations) expressed by "%" or "ppm" indicate proportions by weight unless otherwise specified.

[0015] As used herein, the term "comprises" a component in a medium means that the component is present in the medium, and does not limit the origin of the component. In other words, the term "comprises" encompasses any case in which the component comes to be present, such as when the component is originally present in the raw materials, when a component not present in the raw materials is added from the outside, or when the component is generated during the manufacturing process of the product.

[0016] As used herein, the terms "prevent" or "prevention" refer to reducing or diminishing the frequency of occurrence of an undesirable condition or disease, without limitation on the degree of reduction or diminishment.

[0017] Composition for preventing gastric ulcers in pigs The present invention is based on the invention [1] above, that is, a composition for preventing gastric ulcers in pigs, which contains water-soluble dietary fiber.

[0018] Gum arabic is preferred as the water-soluble dietary fiber in the composition for preventing gastric ulcers in pigs of the present invention. Gum arabic is a polysaccharide obtained from the sap of Acacia plants, and its main components are galactose, arabinose, rhamnose, and glucuronic acid.

[0019] The gum arabic used in the present invention is not limited, but Fibregum (registered trademark) feed (Shima Trading Co., Ltd.) is preferred as the gum arabic in the present invention.

[0020] Fibergum® feed is a water-soluble dietary fiber-containing composition derived from acacia sap, and is disclosed in Non-Patent Document 7. Fibergum® feed is an indigestible high molecular weight polysaccharide purified solely by physical processes, without chemical or enzymatic treatment, and 90% or more of the solid content (AOAC Method 985.29) consists of water-soluble dietary fiber. Fibergum® feed is also a long-acting prebiotic with a large molecular weight that acts throughout the intestine (Non-Patent Document 7).

[0021] Without being bound by theory, the effect of the composition for preventing gastric ulcers in pigs of the present invention will be explained as follows: the composition for preventing gastric ulcers in pigs of the present invention enriches the bacterial flora in the intestines of pigs, and this effect may be related to the effect of the composition for preventing gastric ulcers in pigs of the present invention in preventing gastric ulcers in pigs. On the other hand, the composition for preventing gastric ulcers of the present invention does not have the effect of lowering the inorganic acid concentration in the stomach of a pig, and therefore does not require the effect of adjusting the pH. The effect of preventing gastric ulcers in pigs by the composition for preventing gastric ulcers of the present invention, without adjusting the pH in the stomach, is a remarkable and unexpected effect.

[0022] The composition for preventing gastric ulcers in pigs of the present invention may be fed to pigs alone, or may be mixed with other feeds (mixed feeds or formulated feeds) and fed to pigs as pig feed. The amount of the composition for preventing gastric ulcers in pigs of the present invention to be given is not limited and may be adjusted depending on the growth stage, for example, about 0.1 to about 1.0% by weight of the amount of solid feed such as concentrated feed or compound feed, preferably about 0.15 to about 1.0% by weight, and more preferably about 0.15 to about 0.2% by weight.

[0023] There are no limitations on when the composition for preventing gastric ulcers in pigs of the present invention can be given, but it is preferable to give it from 20 to 27 days of age after weaning. The composition for preventing gastric ulcers in pigs of the present invention may be given to pigs from the rearing stage onward. For example, the period from about 65 days of age is preferable, and the period from about 70 days of age is more preferable. It is also preferable to start giving the composition from about 65 days of age until the pigs are ready to be shipped (for example, about 180 days of age). The number of days for which the composition for preventing gastric ulcers in pigs of the present invention is administered is not limited, but is, for example, about 90 days or more (about 3 months or more). The number of days is preferably about 100 days or more, and more preferably about 110 days or more.

[0024] <Method for producing a composition for preventing gastric ulcers in pigs> The method for producing the composition for preventing gastric ulcers in pigs of the present invention is not limited, and examples thereof include a method comprising a step of purifying acacia sap. The form of the composition for preventing gastric ulcers in pigs of the present invention is not limited, and it may be administered as is or may be formulated and administered.

[0025] The composition for preventing gastric ulcers in pigs of the present invention may contain one or more components that are added to final pig feed, including components of simple feed, components of mixed feed, and components of compound feed.

[0026] The degree of effectiveness of the composition for preventing gastric ulcers in pigs of the present invention in preventing the occurrence of gastric ulcers is not limited. Examples of compositions for preventing gastric ulcers in pigs of the present invention include compositions that reduce the number of pigs that die from gastric ulcers by about 18% or more compared to when the composition for preventing gastric ulcers in pigs of the present invention is not administered. As such compositions, compositions that reduce the number of pigs that die from gastric ulcers by about 23% or more compared to when the composition for preventing gastric ulcers in pigs of the present invention is preferred, compositions that reduce the number of pigs that die from gastric ulcers by about 30% or more are more preferred, and compositions that reduce the number of pigs that die from gastric ulcers by about 35% or more are even more preferred.

[0027] Pig feed The present invention also relates to a pig feed containing the composition for preventing gastric ulcers in pigs of the present invention together with the feed.

[0028] In the pig feed of the present invention, the feed to be mixed with the composition for preventing gastric ulcers in pigs of the present invention is not limited, and examples thereof include plain feed, mixed feed, and compound feed. The above-mentioned simple feed refers to single ingredients such as grains (barley, corn, soybeans, etc.), bran (such as wheat bran or rice bran), oil cakes (soybean-derived, etc.), and animal ingredients (skim milk powder or fish meal). In addition to the above ingredients, individual ingredients used are also called simple feed.

[0029] Mixed feed is feed in which vitamins, minerals, feed additives, etc. are mixed with simple feed, and there are no restrictions on the simple feed or feed additives that can be mixed. Formula feed is a feed that contains the nutrients and supplementary / fortifying ingredients necessary for pig development, and is generally the feed given to pigs. Examples of the label include crude protein, crude fat, crude fiber, and crude ash. Examples of formula feed include grains such as corn and wheat, legumes, fish meal, and meat meal. The pig feed of the present invention may contain other feed additives, such as minerals, vitamins, and amino acids, as long as the effects of the present invention are not impaired.

[0030] The form of these pig feeds of the present invention is not limited, and they may be in semi-solid or liquid form, or in solid form such as pellets or crumbles. Solid pig feed may be molded to contain agricultural ingredients such as wheat, corn, heat-treated barley, rice-derived soybean flour, etc.; carbohydrates such as dextrin; food-derived ingredients such as confectionery scraps, rapeseed oil cake, and soybean oil cake; ingredients such as CaCO3, calcium phosphate, and NaCl; and heated lactic acid bacteria.

[0031] Among the pig feeds of the present invention, those containing compound feed are preferred. Furthermore, among the pig feeds of the present invention, those containing fine grain and having low gastric retention are preferred. The amount of water added to the feed is not limited, and an example of such an amount of water is an amount by weight equivalent to about 3 parts by weight of water to 1 part by weight of compound feed. There is a livestock feed called ecofeed, which can contribute to reducing food waste and whose use is encouraged (Non-cited Document 6). Ecofeed is made by mixing food waste with water and fermenting it with lactic acid bacteria or other suitable agents. Therefore, ecofeed containing fine grains has a porridge-like texture with small particle size and very fine solids. In addition to compound feed and water, ecofeed also contains food waste or food pomace (including residue from shochu production), and such ecofeed may also be used in the pig feed of the present invention.

[0032] The content of the composition for preventing gastric ulcers in pigs in feed is not limited, and is exemplified by an amount of about 0.001 to about 0.01 (about 0.1% by weight to about 1.0% by weight) relative to 1 weight of solid feed. An amount of about 0.15% by weight to about 0.3% by weight is preferred, and an amount of about 0.15% by weight to about 0.2% by weight is more preferred.

[0033] The method for feeding the pig feed of the present invention to pigs is not limited, and may be a method for feeding in a form commonly used in the art.

[0034] The method for producing the pig feed of the present invention is not limited, and the pig feed may be produced by mixing the composition for preventing gastric ulcers for pigs of the present invention with a regular feed or a part of the components constituting the feed. Examples of such regular feed include plain feed, mixed feed, compound feed, and ecofeed. The water used in producing the ecofeed may be heated. When the composition for preventing gastric ulcers in pigs of the present invention is mixed with regular feed or part of the components constituting the feed, the composition for preventing gastric ulcers in pigs of the present invention may be added to regular feed or part of the components constituting the feed, or the composition for preventing gastric ulcers in pigs of the present invention may be added to regular feed or part of the components constituting the feed. The method for producing the feed of the present invention containing water, food residue, or food pomace is not limited. Furthermore, in producing such a feed of the present invention, there is no limit to which two or more of the composition for preventing gastric ulcers in pigs of the present invention, ordinary feed or a portion of the components constituting the feed, water, food residue, and food pomace are mixed, and there is no limit to the order in which the two or more are mixed. A pig feed in which the pig gastric ulcer preventive composition of the present invention and a normal feed are present together in one container is included in the pig feed of the present invention.

[0035] There are no limitations on the timing of feeding the pig feed of the present invention, but it is preferable to feed it from 20 to 27 days after weaning. The pig feed of the present invention may be fed from the rearing stage onwards. For example, a period starting from about 65 days of age is preferred, and a period starting from about 70 days of age is more preferred. It is also preferred to feed the pigs from about 65 days of age until they are shipped (for example, about 180 days of age). The number of days for which the pig feed of the present invention is fed is not limited, and is exemplified as about 90 days or more (about 3 months or more). As such a period, about 100 days or more is preferred, and about 110 days or more is more preferred.

[0036] The extent of the effect of the pig feed of the present invention in preventing the occurrence of gastric ulcers is not limited. Examples of the pig feed of the present invention include a feed that reduces the number of pigs that die from gastric ulcers by about 18% or more compared to when the pig feed of the present invention is not fed. As such a feed, a feed that reduces the number of pigs that die from gastric ulcers by about 23% or more compared to when the pig feed of the present invention is not fed is preferred, a feed that reduces the number of pigs that die from gastric ulcers by about 30% or more is more preferred, and a feed that reduces the number of pigs that die from gastric ulcers by about 35% or more is even more preferred.

[0037] How to raise pigs The present invention also provides a method for preventing gastric ulcers in pigs, i.e., a method for raising pigs, which comprises feeding any of the above-mentioned compositions for preventing gastric ulcers in pigs of the present invention or the above-mentioned pig feed of the present invention to the pigs. In such a method, the method for feeding the composition for preventing gastric ulcers in pigs or the pig feed of the present invention to pigs is not limited, and may be a method commonly used in the art.

[0038] In the method for raising pigs of the present invention, the timing of feeding the composition for preventing gastric ulcers in pigs or the pig feed of the present invention is not limited, but it is preferable to feed them from 20 to 27 days after weaning. In the method for raising pigs of the present invention, the pig gastric ulcer-preventing composition or pig feed of the present invention may be fed from the rearing stage onwards. For example, feeding is preferably initiated from about 65 days of age, more preferably from about 70 days of age. It is also preferred to feed the pigs from about 65 days of age until they are shipped (for example, about 180 days of age). The number of days for feeding the pig gastric ulcer-preventing composition or pig feed of the present invention is not limited, but is exemplified as about 90 days or more (about 3 months or more). Preferably, the number of days is about 100 days or more, more preferably about 110 days or more. In the method for raising pigs of the present invention using the gastric ulcer prevention composition for pigs of the present invention or the pig feed of the present invention, it is also preferable to feed the pigs for about 3 months from the time of fattening, which is after 70 days of age (when the pig weighs about 30 kg and the feed intake is about 2 kg).

[0039] According to the present invention, by carrying out the above-mentioned method, the occurrence of gastric ulcers is prevented and the physical condition of pigs is maintained or improved. Therefore, the present invention also provides a method for maintaining or improving the physical condition of pigs. Furthermore, the water-soluble dietary fiber contained in the gastric ulcer prevention composition or pig feed used in the method of the present invention is not limited, but gum arabic is preferred as such a water-soluble dietary fiber.

[0040] The composition for preventing gastric ulcers in pigs, pig feed, and pig-raising method of the present invention can be applied to any breed of pig, including, but not limited to, Middle Yorkshire, Landrace, Large Yorkshire, Duroc, Berkshire (black pig), Hampshire, and crossbreeds. Furthermore, the brand pigs to which the gastric ulcer prevention composition for pigs, pig feed, and pig-raising method of the present invention can be applied are not limited, and examples of such brand pigs include Kagoshima Kurobuta, Okinawa Agu, Kurao Pork, Buono Pork Gifu, TOKYO X, Wabuta Mochibuta, Rose Pork, and brand pigs used to produce Japanese rice-raised Hirata Farm Sangenton. However, the brand pigs are not limited to these. [Example]

[0041] The present invention will be further described below with reference to examples, but the present invention is not limited to these examples in any sense.

[0042] [Example 1] A composition for preventing gastric ulcers in pigs and a pig feed of the present invention were prepared, and the effects of the composition and the feed on preventing gastric ulcers in pigs were investigated. Materials and Methods Test period: July to October 2020 and August to December 2021 (regular payment area), or July to November 2022 (invention payment area) Water-soluble dietary fiber: Fibergum® feed Test animals: general fattening pigs Base feed: Test feed (manufactured by a domestic compound feed manufacturer) Normal feeding group (control group): No test substance administered Group fed with the present invention: Group fed with Fibergum (registered trademark) feed supplemented feed Fattening pigs were raised in three pig barns, each housing 100 or more pigs. They were either fed a normal diet or were fed pig feed containing 5 kg (approximately 0.17%) of the composition for preventing gastric ulcers in pigs of the present invention (Fibergum (registered trademark) Feed) per 3.0 t of raw feed, and were raised in the normal manner. The number of animals that had died due to gastric ulcers or other causes up until the time of shipping was recorded, and the ratio of the number of animals that had died due to gastric ulcers or all causes to the total number of animals kept was calculated. ●Results The results are shown in Table 1 below. [Table 1] Thus, in the area fed the present invention, the number of deaths due to gastric ulcers was reduced by 23.8% compared to the area fed the normal diet compared to 2020, and by 43.9% compared to 2021. Meanwhile, the total number of deaths, including those due to gastric ulcers, was also reduced by 21.5% and 29.8%, respectively. Furthermore, since the reduction in the number of deaths due to gastric ulcers was greater, it can be said that the effect of the pig gastric ulcer prevention composition and pig feed of the present invention on gastric ulcers is greater than the effect on other causes of death. Therefore, it has been clarified that the composition for preventing gastric ulcers in pigs and pig feed of the present invention have the effect of preventing gastric ulcers in pigs and have the effect of enabling pig production with a high yield.

[0043] [Example 2] A composition for preventing gastric ulcers in pigs and a pig feed of the present invention were prepared, and the effects of the composition and the feed on preventing gastric ulcers in pigs were investigated simultaneously. Materials and Methods Exam period: January to May 2023 Water-soluble dietary fiber: Fibergum® feed Test animals: general fattening pigs Base feed: Test feed (manufactured by a domestic compound feed manufacturer) Normal feeding group (control group): No test substance administered Group fed with the present invention: Group fed with Fibergum (registered trademark) feed supplemented feed In each group, fattening pigs of approximately the same number (500 or more) were raised and either fed a normal diet or were fed pig feed containing 0.2% of the composition for preventing gastric ulcers in pigs (Fibergum (registered trademark) Feed) based on the original feed, and were raised as usual. The number of animals that had died from gastric ulcers or other causes up until the time of shipping (May) was recorded, and the ratio of the number of animals that had died from gastric ulcers or all causes to the total number of deaths was calculated. ●Results The results are shown in Table 2 below. [Table 2] Thus, in the feeding group of the present invention, the number of deaths due to gastric ulcers was reduced by 42.4% compared to the normal feeding group. This result was comparable to the results obtained in Example 1 (43.9% reduction compared to 2021), and showed reproducibility. The overall number of deaths, including those from gastric ulcers, also decreased by 17.0%. Furthermore, since the reduction in the number of deaths due to gastric ulcers was greater, it can be said that the effect of the pig gastric ulcer prevention composition and pig feed of the present invention on gastric ulcers is greater than the effect on other causes of death. Therefore, it has become even clearer that the composition for preventing gastric ulcers in pigs and pig feed of the present invention are effective in preventing gastric ulcers in pigs and in enabling pig production with a high yield. There was no difference in the pH of the intestines of the pigs tested between those fed the present invention and those fed the normal diet.

[0044] <General Consideration of Examples 1 and 2> The results of these studies revealed the following about feeding Fibergum® feed: The composition for preventing gastric ulcers in pigs and the pig feed of the present invention are effective in preventing gastric ulcers in pigs. Furthermore, among the composition for preventing gastric ulcers in pigs and the pig feed of the present invention, Fibergum (registered trademark) feed is thought to be particularly effective. [Industrial Applicability]

[0045] The present invention provides a nutritional supplement composition and pig feed that are highly versatile and excellent for managing the physical condition of pigs, and therefore the present invention will greatly contribute to the development of the pig feed production industry, the livestock industry, and related industries.

Claims

1. A composition for preventing gastric ulcers in pigs, which is used together with feed and contains water-soluble dietary fiber as an ingredient for preventing gastric ulcers in pigs, The content of the composition is 0.001 to 0.003 by weight per 1 by weight of the feed; The water-soluble dietary fiber is gum arabic. The composition for reducing the number of pigs that die from gastric ulcers by 18% or more when fed for 4 months compared to when the composition is not used.

2. 2. The composition for preventing gastric ulcers in pigs according to claim 1, wherein the content of the composition for preventing gastric ulcers is 0.001 to 0.002 by weight per 1 by weight of the feed.

3. A pig feed comprising the composition for preventing gastric ulcers in pigs according to claim 1 together with the feed.

4. 4. The pig feed of claim 3, wherein the feed further comprises food waste or food pomace and water.

5. 4. The feed for pigs according to claim 3, wherein the content of the composition for preventing gastric ulcers is 0.001 to 0.002 by weight per 1 weight of the feed.

6. 4. The pig feed of claim 3, which is in solid form.

7. A method for raising pigs, comprising a step of feeding pigs the composition for preventing gastric ulcers in pigs according to claim 1 or 2 or the pig feed according to any one of claims 3 to 6.

8. The method according to claim 7, wherein the pig feed is obtained by mixing the feed with a composition for preventing gastric ulcers in pigs.

9. The method according to claim 8, which comprises preventing gastric ulcers in pigs with the composition for preventing gastric ulcers in pigs according to claim 1 or 2.

10. 8. The method according to claim 7, wherein the water-soluble dietary fiber contained in the composition for preventing gastric ulcers or in pig feed is gum arabic.

11. Gum arabic is the fiber gum feed, A composition for preventing gastric ulcers in pigs as described in claim 2, wherein the fiber gum feed is an indigestible high molecular weight polysaccharide derived from acacia sap, and 90% or more of the solid content (AOAC method 985.29) consists of water-soluble dietary fiber.

12. 6. The feed for pigs according to claim 5, wherein the content of the composition for preventing gastric ulcers is 0.001 to 0.0017 by weight per 1 weight of the feed.

13. 13. The pig feed of claim 12, wherein the feed further comprises food waste or food pomace and water.

14. 14. The pig feed of claim 13, which is grass-free.

15. 2. The composition for preventing gastric ulcers in pigs according to claim 1, further comprising a component from acacia sap other than water-soluble dietary fiber.

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