The present application relates to a feed additive composition and a feed composition comprising the same.
background
[2]
As of 2017, the productivity of domestic pig farms has remained stagnant for several years. As a solution in this situation, it is proposed to increase the shipment weight by delaying the shipment time of finisher pigs, or to improve the competitiveness of farms with respect to the carcass rate. the current situation. The growth stage of the finisher pig is the last stage in which the growth of the pig proceeds, and the growth of the muscle is completed and the accumulation of fat proceeds. Therefore, the growth stage of finisher pigs is one of the periods in which fat accumulation in the muscles, which is directly related to the quality of pork as well as the carcass rate, has a great influence on the accumulation of, for example, the reduction of back fat.
[3]
Elanco's Paylean has been released as a synthetic product for the purpose of increasing carcass rate and reducing back fat in line with the needs of current farmers. has been On the other hand, Republic of Korea Patent Publication No. 10-2016-0119273 discloses a method for treating a glycine compound or a salt thereof in order to reduce the feed requirement of pigs and increase the growth rate of pigs, and a composition for feed containing the glycine compound, have. As described above, although various studies are being conducted to improve the growth rate of livestock, it is still insufficient.
[4]
Under this background, the present inventors have made intensive efforts to develop feed additives that can improve farm productivity through enhancement of carcass rate, etc. As a result, by additionally feeding ursolic acid and / or masrnic acid derived from natural products, feed efficiency and livestock It was confirmed that it was possible to improve the carcass carcass rate and reduce the level of back fat accumulated in excess, and based on this, the present application was completed.
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[5]
One object of the present application is to provide a feed additive composition comprising ursolic acid or a salt thereof.
[6]
Another object of the present application is to provide a feed composition comprising the feed additive composition of the present application.
[7]
Other objects and advantages of the present application will become more apparent from the following detailed description in conjunction with the appended claims and drawings. Content not described in this specification will be omitted because it can be sufficiently recognized and inferred by those skilled in the technical field of the present application or a similar technical field.
means of solving the problem
[8]
Each description and embodiment disclosed in the application is also applicable to each other description and embodiment. That is, all combinations of the various elements disclosed in this application fall within the scope of this application. In addition, it cannot be seen that the scope of the present application is limited by the specific descriptions described below.
[9]
[10]
The present application provides a feed additive composition comprising ursolic acid or a salt thereof in one aspect.
[11]
As used herein, the term "feed additive" refers to a substance added to a feed composition, and may correspond to an auxiliary feed under the Feed Management Act. The feed additive may be for improving productivity or health of animals or livestock. The productivity of domestic pig farms has remained stagnant for several years, and accordingly, research on the development of feed additives that contribute to the improvement of pork quality by reducing carcass rate and back fat is being actively conducted. However, it is difficult to develop feed additives due to issues related to animal retention and side effects.
[12]
According to one embodiment, when a feed additive containing ursolic acid derived from a natural product was additionally fed to growing or finisher pigs, it was confirmed that the feed efficiency and carcass rate were improved, as well as the reduction of back fat was significantly improved. Accordingly, the present application may provide a feed additive composition comprising ursolic acid as an active ingredient.
[13]
As used herein, the term "ursolic acid" refers to a compound represented by the following formula (1). The ursolic acid is a kind of pentacyclic triterphinic acid contained in natural products such as roseberry, cherry, apple gourd, and cherry, and its physiological activity is reported to have effects such as antioxidant, insecticidal, blood sugar strengthening, and anti-aging. has been
[14]
[Formula 1]
[15]

[16]
Ursolic acid of the present application may be included in the feed additive composition in the form of a salt. The ursolic acid may be provided as a salt in an acceptable form as a feed ingredient, which may be prepared by a known method. Specific examples include inorganic acids such as hydrochloric acid, nitric acid, phosphoric acid, and sulfuric acid; sulfonic acids such as metasulfonic acid; Or it may be an acid addition salt formed by organic carboxylic acids such as oxalic acid, acetic acid fumaric acid, malonic acid, maleic acid, malic acid, and succinic acid.
[17]
In one embodiment, the feed additive composition of the present application may include the ursolic acid or a salt thereof in an amount of 11000 to 25000 ppm based on the total weight of the feed additive composition. The content of the ursolic acid or its salt is, for example, 11000 to 22000 ppm, 11000 to 19000 ppm, 11000 to 16000 ppm, 11000 to 13000 ppm, 13000 to 22000 ppm, 13000 to 19000 ppm, based on the total weight of the feed additive composition. 13000 to 16000 ppm, 15000 to 22000 ppm, 15000 to 19000 ppm, 15000 to 16000 ppm, 17000 to 22000 ppm, 17000 to 19000 ppm, or 19000 to 22000 ppm may be, but the type and age of livestock, application form, desired It can be appropriately adjusted according to the effect, etc.
[18]
In addition, the feed additive composition of the present application may further include masrnic acid or a salt thereof.
[19]
According to one embodiment, when a feed additive containing ursolic acid and marinic acid derived from a natural product is additionally fed to finisher pigs, feed efficiency and carcass rate are improved, and in particular, the effect of reducing back fat is a feed containing the ursolic acid It was confirmed that there was a significant improvement compared to the additive. Accordingly, the present application may provide a feed additive composition comprising ursolic acid and marinic acid as active ingredients.
[20]
As used herein, the term "Maslinic acid" refers to a compound represented by the following formula (2). The masrinoic acid is a type of pentacyclic triterphic acid contained in natural products such as Schisandra and Bipa leaf, and its physiological activity has been reported to have effects such as antioxidant, anti-aging, and anti-inflammatory.
[21]
[Formula 2]
[22]

[23]
The masronic acid of the present application, like ursolic acid, may be included in the feed additive composition in the form of a salt. The masronic acid may be provided as a salt in an acceptable form as a feed ingredient, and specific examples of the salt are the same as those mentioned in the above ursolic acid.
[24]
In one embodiment, the feed additive composition of the present application may include 40 to 10000 ppm of the masrnic acid or a salt thereof based on the total weight of the feed additive composition. The content of the masrnic acid or its salt is, for example, 40 to 9000 ppm, 40 to 8000 ppm, 40 to 7000 ppm, 40 to 6000 ppm, 40 to 5000 ppm, 40 to 4000 ppm, based on the total weight of the feed additive composition. 40 to 3000 ppm, 40 to 2000 ppm, 40 to 1000 ppm, 40 to 5000 ppm, 40 to 2500 ppm, 40 to 2000 ppm, 40 to 1500 ppm, or 40 to 1000 ppm, for example, 100 to 5000 ppm, 100 to 4000 ppm, 100 to 3000 ppm, 100 to 2000 ppm, 100 to 1000 ppm, 200 to 2500 ppm, 200 to 2000 ppm, 200 to 1500 ppm, or 200 to 1000 ppm, but the type of livestock And it can be appropriately adjusted according to age, application form, desired effect, and the like.
[25]
In one embodiment, ursolic acid and masrnic acid of the present application may be included in a weight ratio of 1:1 to 3000:1. The weight ratio of ursolic acid and masronic acid is, for example, 1:1 to 2500:1, 1:1 to 2000:1, 1:1 to 1500:1, 1:1 to 1000:1, 1:1 to 500: 1, 1:1 to 400:1, 1:1 to 300:1, 1:1 to 200:1, 1:1 to 100:1, 1:1 to 90:1, 1:1 to 80:1, 1:1 to 70:1, 1:1 to 60:1, 1:1 to 50:1, 1:1 to 40:1, 1:1 to 30:1, 1:1 to 20:1, or 1 It may be :1 to 10:1, but this can also be changed by the enemy.
[26]
The feed additive composition of the present application may be prepared in powder or granular form, and if necessary, organic acids such as citric acid, humic acid, adipic acid, lactic acid, malic acid, sodium phosphate, potassium phosphate, acid pyrophosphate, polyphosphate, etc. Phosphates, polyphenols, catechins, alpha-tocopherol, rosemary extract, vitamin C, green tea extract, licorice extract, chitosan, tannic acid, any one or more of natural antioxidants such as phytic acid may be further included. The feed additive of the present application may be formulated in a conventional feed form, and may include common feed ingredients together.
[27]
The feed additive composition of the present application includes grains, for example, pulverized or crushed wheat, oats, barley, corn and rice; plant protein feeds, such as feeds based on rape, soybean, and sunflower; animal protein feeds such as blood meal, meat meal, bone meal and fish meal; Sugar and dairy products, for example, may further include dry ingredients made of various powdered milk and whey powder, and may further include nutritional supplements, digestion and absorption enhancers, growth promoters, and the like.
[28]
The feed additive composition of the present application may be administered to an animal alone or in combination with other feed additives in an edible carrier. In addition, the feed additives can be easily administered to the animal as a top dressing, directly mixing them into the feed, or in an oral formulation separate from the feed. When the feed additive composition is administered separately from the feed, it may be combined with a pharmaceutically acceptable edible carrier as well known in the art to prepare an immediate release or sustained release formulation. Such edible carriers may be solid or liquid, for example corn starch, lactose, sucrose, soy flakes, peanut oil, olive oil, sesame oil and propylene glycol. When a solid carrier is used, the feed additive may be a tablet, capsule, powder, troche or sugar-containing tablet or top dressing in microdispersed form. When a liquid carrier is used, the feed additive may be in the form of a gelatin soft capsule, or a syrup or suspension, emulsion, or solution.
[29]
The feed additive composition of the present application may contain, for example, a preservative, a stabilizer, a wetting or emulsifying agent, a solution accelerator, and the like. The feed additive may be used by being added to animal feed by immersion, spraying, or mixing.
[30]
The feed additive composition of the present application can be applied to a number of animal diets, including mammals and poultry. As the mammal, it can be used for pigs, cattle, sheep, goats, laboratory rodents, and laboratory rodents, as well as pets (eg, dogs, cats), etc., and as the poultry, chickens, turkeys, ducks, geese, pheasants, and quails.
[31]
[32]
Another aspect of the present application provides a feed composition comprising the feed additive composition of the present application.
[33]
As used herein, the term "feed composition" refers to food fed to animals. The feed composition refers to a material that supplies organic or inorganic nutrients necessary for maintaining animal life, or for producing meat, milk, and the like. The feed composition may include the feed additive of the present application, and may additionally include nutrients necessary for maintaining animal life, or for producing meat, milk, and the like.
[34]
The content of the feed additive composition in the feed composition of the present application can be appropriately adjusted according to the type and age of the applied livestock, the application form, the desired effect, etc., for example, 0.01 to 1% (w/w), 0.01 to 0.5 % (w/w), or 0.15 to 0.5 % (w/w).
[35]
In one embodiment, the feed composition of the present application may include the ursolic acid or a salt thereof in an amount of 10 to 300 ppm based on the total weight of the feed composition. The content of the ursolic acid or its salt is, for example, 10 to 90 ppm, 10 to 80 ppm, 10 to 70 ppm, 10 to 60 ppm, 10 to 50 ppm, 10 to 40 ppm, 10 based on the total weight of the feed composition. to 30 ppm, or 10 to 20 ppm, but can be appropriately adjusted according to the type and age of livestock, application form, desired effect, and the like.
[36]
In one embodiment, the feed composition of the present application may include 1 to 100 ppb of the masrnic acid or a salt thereof based on the total weight of the feed composition. The content of the masrnic acid or its salt is, for example, 1 to 90 ppb, 1 to 80 ppb, 1 to 70 ppb, 1 to 60 ppb, 1 to 50 ppb, 1 to 45 ppb, 1 based on the total weight of the feed composition. It may be 40 ppb, 1 to 35 ppb, 1 to 30 ppb, 1 to 25 ppb, 1 to 20 ppb, or 1 to 10 ppb, but appropriately adjusted according to the type and age of livestock, application form, desired effect, etc. possible.
[37]
The feed composition of the present application may further include any one or more essential amino acids selected from the group consisting of lysine, threonine, tryptophan, methionine, and valine. have.
[38]
According to one embodiment, when an essential amino acid such as lysine and a feed additive including ursolic acid and marinic acid were additionally fed together with finisher pigs, effects such as feed efficiency and carcass rate were further improved. Accordingly, the present application may provide a feed composition further comprising essential amino acids in terms of enhancing efficacy.
[39]
In one embodiment, the feed composition of the present application may include the essential amino acids in an amount of 0.05 to 5% (w/w) based on the total weight of the feed composition. The content of the essential amino acids is based on the total weight of the feed composition, for example, 0.05 to 4% (w / w), 0.05 to 3% (w / w), 0.05 to 2% (w / w), 0.05 to 1% (w/w), 0.1 to 4% (w/w), 0.1 to 3% (w/w), 0.1 to 2% (w/w), 0.1 to 1% (w/w), 0.5 to 4% (w/w), 0.5 to 3% (w/w), 0.5 to 2% (w/w), or 0.5 to 1% (w/w).
[40]
In addition to the feed additive composition for administration, the feed composition of the present application includes organic acids such as citric acid, fumaric acid, adipic acid, and lactic acid; phosphates such as potassium phosphate, sodium phosphate, and polymerized phosphate; One or more of natural antioxidants such as polyphenol, catechin, tocopherol, vitamin C, green tea extract, chitosan, and tannic acid can be mixed and used. can do. In addition, the feed composition of the present application may be formulated into an injectable formulation such as an aqueous solution, suspension, emulsion, etc., capsules, granules or tablets by additionally adding a diluent, dispersant, surfactant, binder or lubricant. In addition, the feed composition of the present application includes various auxiliary agents such as amino acids, inorganic salts, vitamins, antioxidants, antifungals, and antibacterial agents as auxiliary components, and plant protein feed such as milled or crushed wheat, barley, and corn, blood meal, meat meal, fish meal, etc. In addition to the main ingredients such as animal protein feed, animal fat and vegetable fat, it can be used together with nutritional supplements, growth promoters, digestion and absorption promoters, and disease prevention agents.
[41]
The feed composition of the present application may be mixed in an amount of about 10 to 500 g, for example, 10 to 100 g per 1 kg on a dry weight basis to livestock feed, and supplied as a mash after complete mixing, or additional processing process It can be subjected to pelletization, expansion or extrusion processes.
Effects of the Invention
[42]
The feed additive composition according to the present application can improve feed efficiency and carcass rate of livestock, and can significantly reduce back fat.
[43]
Therefore, the feed additive composition according to the present application or a feed composition including the same can contribute to the improvement of productivity and quality of livestock.
Modes for carrying out the invention
[44]
Hereinafter, the present invention will be described in more detail through examples. However, these examples are for illustrative purposes of the present invention, and the scope of the present invention is not limited to these examples.
[45]
[46]
Test Example 1. Specification test at the stage of growing pigs according to feed additive feeding
[47]
In this test example, it was attempted to determine the effect of a feed additive containing ursolic acid on feed efficiency. The test livestock in this test example was a total of 288 Duroc × Yorkshire × Landrace ternary hybrid breeding pigs, and their average weight at the start of the test was 37.73 + 2.14 kg. The breeding test was conducted for 36 days at Wanju Farm, a farm of CJ Don Don Farm, which is affiliated with CJ CheilJedang. As a test design, a CJ CheilJedang basic feed treatment group (control group) and a test feed treatment group (Example 1) in which 25 ppm of ursolic acid was added based on the total weight of the feed were set up. That is, the test feed treatment group was a treatment group in which the feed additive according to this test example was added to the basic feed, and a feed additive containing 17000 ppm of ursolic acid based on the total weight of the feed additive was used. The feed additive was prepared by measuring the content of ursolic acid in the existing natural product, adjusting the content of ursolic acid based on this, and adding ursolic acid extracted from the natural product if necessary. Four repeated tests were performed for each treatment group, and the test was conducted by completely randomizing 24 animals in each test. As a basic feed, a feed for livestock containing 2,510 kcal NE (Net energy, net energy)/kg, 17.00 wt% of protein, and 0.93 wt% of lysine based on the US Specification Standards Guidelines (NRC) was used. The feeds were allowed to be freely vegetarian in the form of powdered feed, and water was provided using an automatic drinker. Thereafter, by measuring the body weight and feed intake of the test livestock at each time point, Average daily gain (ADG), Average daily feed intake (ADFI), and Feed conversion ratios (FCR) were calculated. The feed efficiency means the ratio of the weight gain to the feed weight, and the significance between the treatment groups was tested using the General Linear Model Procedure program of SAS (1996).
[48]
Table 1 shows the results of confirming the daily gain, daily feed intake, and feed efficiency of growing pigs fed the basic feed or test feed for 36 days.
[49]
[Table 1]
[50]

[51]
As shown in Table 1, on the 36th day after feeding the basic feed or test feed, the daily gain of growing pigs according to Example 1 was improved by about 5% compared to the control group, and also in terms of feed efficiency, according to Example 1 The breeding pigs were about 8.4% higher than that of the control group. From these experimental results, it was found that the feed additive containing ursolic acid promotes the growth of growing pigs, and also improves the weight gain relative to the feed weight, that is, the feed efficiency.
[52]
[53]
Test Example 2. Feeding test results in breeding pigs/finishing pigs according to feed additive feeding
[54]
In this test example, the effect of a feed additive containing ursolic acid and/or masrinic acid on feed efficiency, carcass rate and back fat level was investigated. The test livestock in this test example was a total of 120 Duroc × Yorkshire × Landrace ternary hybrid breeding pigs/finishing pigs, and their average weight at the start of the test was 43.3 kg ± 0.9 kg. The breeding test was conducted for 67 days as a service evaluation at the test farm attached to Chungnam National University. As the trial design, as shown in Table 2 below, CJ CheilJedang basic feed treatment group (control group); Test feed treatment group in which 25ppm or 50ppm of ursolic acid was added based on the total weight of the feed to the basic feed (Example 2 or 3); And a test feed treatment group (Example 4) in which 25 ppm of ursolic acid and 10 ppb of masronic acid were added to the basic feed based on the total weight of the feed was set. The test feed treatment group was a treatment group in which the feed additive according to this test example was added to the basic feed, and a feed additive containing 17,000 ppm ursolic acid or 5,500 ppm masronic acid based on the total weight of the feed additive was used. The feed additive was prepared by measuring the content of ursolic acid or masrinic acid in the existing natural product, then adjusting their content based on this, and adding ursolic acid or masrnic acid extracted from natural products if necessary. Six repetitions of the test were performed for each treatment group, and the test was conducted by completely randomizing 4 animals in each test. As a basic feed, 2,510 kcal NE (Net energy, net energy)/kg, 17.00 wt% of protein, and 0. Livestock feed containing 93% by weight of lysine was used. The feeds were allowed to be vegetarian in the form of powdered feed, and water was provided using an automatic drinker. Thereafter, the body weight and feed intake of the test livestock were measured at each time point, and the daily gain, daily feed intake, and feed efficiency were calculated. energy). In addition, the significance between treatment group means was tested using the General Linear Model Procedure program of SAS (1996).
[55]
[Table 2]
[56]

[57]
Table 3 shows the results of confirming the feed efficiency, carcass rate, and the level of back fat of growing pigs/finishing pigs fed the basic feed or test feed for 67 days.
[58]
[Table 3]
[59]

[60]
As shown in Table 3, on the 67th day after feeding the basic feed or test feed, the growing pigs/finishers according to Examples 2, 3, or 4 were all improved in daily weight gain, feed efficiency, carcass rate, and the like compared to the control group. showed a decrease in the room. In particular, in the reduction of carcass rate and back fat, the growing pigs/finishing pigs according to Examples 3 and 4 showed a significant difference from the control group (*, p<0.05).
[61]
Specifically, in the growing pigs/finishing pigs of Example 2 to which ursolic acid was additionally fed, not only the improvement of feed efficiency, but also the improvement of carcass rate and the reduction of back fat were confirmed. In addition, in the case of growing pigs/finishing pigs of Example 3, the carcass rate was increased by about 2.46% compared to the control group, and the back fat was reduced by about 1.16mm. This is a further improvement compared to the results of Example 2, and it was found that the effect of enhancing carcass rate and reducing back fat was improved depending on the amount of ursolic acid fed.
[62]
In addition, in the case of growing pigs/finishing pigs of Example 4 fed with ursolic acid and masronic acid, the carcass rate was increased by about 2.1% compared to the control, and the back fat was reduced by about 1.30mm. This was similar to the above, compared to the effect of increasing the carcass rate and reducing back fat of Example 2, and in particular, in the reduction of back fat, it is superior to Example 3 in which a large amount of ursolic acid was fed. Therefore, it was found that the feeding of ursolic acid and masronic acid further enhanced the effect of increasing carcass rate and reducing back fat.
[63]
[64]
Test Example 3. Feeding test results in the finishing pig stage according to feed additive feeding
[65]
In this test example, when an essential amino acid component was added to the feed additive of Test Example 2, it was attempted to confirm the feed efficiency, the carcass rate, and the reduction of back fat. The test livestock in this test example was a total of 288 Duroc×Yorkshire×Landrace ternary hybrid finishers, and their average weight at the start of the test was 70.6kg±2.5kg. The breeding test was conducted for 42 days at Wanju Farm, a farm of CJ Don Don Farm, which is affiliated with CJ CheilJedang. As the trial design, as shown in Table 4 below, CJ CheilJedang basic feed treatment group (control group); Test feed treatment group in which 50 ppm of ursolic acid and 20 ppb of masronic acid were added to the basic feed (Example 5); A test feed treatment group (Example 6) was set in which 0.13% (w/w) of lysine was added to the test feed. The test feed treatment group was a treatment group in which the feed additive according to this test example was added to the basic feed, and a feed additive containing 17,000 ppm ursolic acid or 5,500 ppm masronic acid based on the total weight of the feed additive was used. The feed additive was prepared by measuring the content of ursolic acid or masrinic acid in the existing natural product, then adjusting their content based on this, and adding ursolic acid or masrnic acid extracted from natural products if necessary. In addition, the test feed of Example 6 was prepared by adding 0.13% of lysine to the test feed. Four repeated tests were performed for each treatment group, and the test was conducted by completely randomizing 24 animals in each test. As basic feed, 2,510kcal NE (Net energy, net energy)/kg, 17. A feed for livestock containing 00% by weight of protein and 0.93% by weight of lysine was used. The feeds were allowed to be vegetarian in the form of powdered feed, and water was provided using an automatic drinker. Thereafter, the body weight and feed intake of the test animals were measured at each time point, and the daily gain, daily feed intake, and feed efficiency were calculated. After the test animals were slaughtered, the carcass rate and the level of back fat were measured (NE, net rice energy). In addition, the significance between treatment group means was tested using the General Linear Model Procedure program of SAS (1996).
[66]
[Table 4]
[67]

[68]
Table 5 shows the results of confirming the feed efficiency, carcass rate and the level of back fat of finisher pigs fed the basic feed or test feed for 42 days.
[69]
[Table 5]
[70]

[71]
As shown in Table 5 above, on the 42nd day after feeding the basic feed or test feed, in the case of the finisher pig of Example 5, the feed efficiency was improved, and the carcass rate was increased by about 1.05% compared to the control group, and back fat was reduced by 2.23 mm. This is a result of re-verifying the effect according to the salary of ursolic acid and masrinic acid confirmed in Test Example 2.
[72]
In addition, in the finisher pigs of Example 6 supplemented with lysine, the effect of improving the feed efficiency as well as enhancing the carcass rate and reducing back fat was confirmed. Specifically, in the case of the finisher pig of Example 6, the carcass rate was increased by 1.45% compared to the control, and the back fat was reduced by about 0.62mm. In particular, the effect of enhancing the carcass rate of Example 6 was significantly improved compared to the result of Example 5, and the effect of reducing back fat was also determined to be a significant reduction effect when the improved carcass rate was comprehensively considered. Therefore, it can be seen that the addition of essential amino acid components such as lysine contributes to enhancing the effects of ursolic acid and masrinic acid fed as feed additives.
[73]
[74]
The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.
[75]
[76]
[77]
Claims
[Claim 1]
Ursolic acid (Ursolic acid) or a feed additive composition comprising a salt thereof.
[Claim 2]
The feed additive composition of claim 1, wherein the ursolic acid or its salt is included in an amount of 11000 to 25000 ppm based on the total weight of the feed additive composition.
[Claim 3]
The method according to claim 1, Maslinic acid (Maslinic acid) or a salt thereof further comprising, the feed additive composition.
[Claim 4]
The feed additive composition according to claim 3, comprising 40 to 10000 ppm of the masrnic acid based on the total weight of the feed additive composition.
[Claim 5]
The feed additive composition according to claim 3, wherein the ursolic acid and masronic acid are included in a weight ratio of 1:1 to 3000:1.
[Claim 6]
A feed composition comprising the feed additive composition of any one of claims 1 to 5.
[Claim 7]
The feed composition of claim 6, wherein the feed composition further comprises any one or more essential amino acids selected from the group consisting of lysine, threonine, tryptophan, methionine, and valine.
[Claim 8]
The feed composition according to claim 7, comprising 0.05 to 5% (w/w) of the essential amino acids based on the total weight of the feed composition.