JPS6154382B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an animal feed for pets with excellent palatability, and more particularly to an animal feed for pets to which digested bonito internal organs are added, and a method for producing the same. Currently, a number of pet animal feeds are available on the market that can be easily fed to save the labor of pet animal owners. These animal feeds for pets come in many forms, but dry or semi-moist types are most commonly used because they can be mass-produced, are cheap, and are easy to handle. . However, conventional products have disadvantages such as poor palatability, and pet animals either do not necessarily like to eat them or get tired of them quickly. Therefore, in recent years, research has been conducted to increase feed intake by adding palatability-enhancing substances preferred by pet animals to such pet animal feed, and many palatability-enhancing substances have been reported. Therefore, in order to find a substance that is palatable to pet animals, the present inventor focused on the fact that animals such as cats have traditionally liked bonito, and conducted extensive research. BACKGROUND ART Conventionally, whole bodies and offal of fish such as bonito have been boiled and dried to produce fishmeal, or digested to produce fish soup, which is used as animal feed. However, surprisingly, the meat part has low palatability, and not only is there no increase in feed intake even when 10 to 15% of this is added to feed, but the meat part of bonito is not edible by humans. Therefore, it is inevitable that it will be expensive. However, as a result of further research, the inventor found that
The present invention was completed based on the discovery that pet animals show a marked preference for the digested product obtained by digesting the internal organs of bonito, which had conventionally been discarded as inedible parts. Accordingly, the present invention provides pet animal feed to which a digested product obtained by digesting the internal organs of bonito is added, and a method for producing the same. In the present invention, bonito viscera refers to the so-called bonito viscera that is produced as a by-product during fish processing, and does not include processed fish dregs other than fish meat and viscera such as the head, bones, and tail.
If these internal organs are left unattended and lose their freshness, the animal's palatability will be significantly impaired, so they are processed while they are still fresh. According to the present invention, the digested bonito internal organs are produced as follows. That is, fresh bonito innards are digested as is or after being minced or added with water as necessary. Digestion is 45-60
If left at a temperature of 1 to 3 hours at a temperature of 0.degree. C., autolysis is carried out by enzymes in the raw materials, but if necessary, for example, proteolytic enzymes such as endopeptidase may be added to accelerate digestion. After the digestion is complete, the enzymes are deactivated by heating to 90°C or higher. The digested product thus obtained can be added to feed as is, but it is preferable to further centrifuge it to remove undigested solids and fats and oils. If it is then concentrated to a moisture content of 50% or less, it can be stored to some extent, but it is preferable to further pulverize it. Powderization is carried out by a method commonly used in such cases, for example, by using the above concentrate as it is or by adding and mixing powders such as wheat bran, defatted rice bran, various starches, and dextrin, and further adding an antioxidant, etc. as necessary. In addition, it is carried out by spray drying. The digested bonito internal organs thus obtained are added to conventional pet animal feed materials. Animal feed materials other than the digested material include those already conventionally used, such as corn, wheat flour,
Soybean meal, yeast, fishmeal, wheat germ, vitamins, minerals, etc. are used. The amount of digested bonito innards added varies somewhat depending on the type of pet animal, the type of feed material, and the form of feed, but when mixed with feed materials, it is 3 to 15% by weight (dry weight), and solid feed. 0.1 to 10% by weight (dry weight) is preferable when coating the surface of the skin.If the amount is less than this, the palatability will not be exhibited, and if it is added more than this, the palatability will not be further improved. Various methods can be used to add digested bonito internal organs, such as adding it to the raw material at any step of producing feed from the above raw materials, or coating the surface of the feed after molding. can. However, since this digested product is used to enhance the palatability of pet animal feed, it is more effective to coat only the surface than to add it to the raw materials, and it is also economical because the amount added is small. It is true. In order to coat the surface of solid feed with digested bonito internal organs, for example, the solid feed is soaked in a paste obtained by digesting bonito internal organs or concentrated thereof, and then dried; Dust the surface with powder or coat it using a coating aid. Examples of coating aids include aqueous solutions of sugars and gums, oils and fats, among others,
Preferred oils include vegetable oils such as soybean oil, coconut oil, and palm oil, and animal fats and oils such as lard and tallow. The pet animal feed of the present invention obtained as described above is highly palatable as feed for mainly cats and dogs, and the person feeding it can also feel the aroma of bonito. Feeding is fun. Furthermore, when water is added to the feed to soften it, the palatable digested matter is eluted into the water, further improving palatability. Next, an example will be given and explained. Example 1 (i) Add 2.5 kg of water to 5 kg of bonito innards, mix with a mixer, and then add proteolytic enzyme [bioplase:
Add 50P.UN (manufactured by Nagase Sangyo Co., Ltd.) and leave it at 60°C for 2 hours to perform digestion. After completion of digestion, heat to 90°C to deactivate the enzyme. The resulting slurry is centrifuged to remove solids such as oil and undecomposed substances. This was then concentrated at 90°C until the water content became 45%, yielding 1.5 kg of paste-like digest. (ii) The following basic raw materials were mixed, 10 g of soybean oil and 40 g of the above-mentioned paste digest were added, and the mixture was molded using a heating and pressure extruder to obtain animal feed for pets (Product 1 of the present invention). Separately, 10 g of soybean oil and 40 g of factory ship meal were added to the following basic raw materials and molded in the same manner as above to obtain a control animal feed for pets (Control Product 1). Basic raw material composition Corn 100 (g) Wheat flour 300 Soybean meal 20 North Sea fish meal 250 Yeast 50 Wheat germ 50 Skimmed milk powder 30 Meat meal 150 Vitamins and minerals 50 (iii) The following procedures are performed for the digestate-added feed obtained above and control product 1. We conducted a palatability test. Test method Test material: 16 cats Feeding amount: 70 g/day/head Feeding method: Each cat was fed two types of feed in parallel. Number of test days: 4 days Measuring standard for food intake: Food intake was measured 24 hours after feeding. Feed intake The average value of the feed intake of each feed relative to the total food intake is shown as a percentage. result

[Table] Example 2 (i) Paste-like digested product 1 obtained in (i) of Example 1
1 kg of water and 300 g of dextrin were added and mixed, and the mixture was spray-dried to obtain 800 g of powdered digestate. (ii) Pasty digested product 1 obtained in (i) of Example 1
400 g of water was added to Kg and spray-dried to obtain 520 g of powdered digestate. (iii) 1 kg of basic raw materials having the same composition as in (ii) of Example 1 were mixed and molded using a heating and pressure extruder to produce a solid feed. The surface of this feed was coated with 20 g of soybean oil, and 10 g of the powdered digested product obtained in (i) was sprinkled thereon to obtain animal feed for pets (invention product 2). Separately, solid feed was prepared in the same manner as above, the surface of this feed was coated with 20 g of soybean oil, and this was further coated with fish oil [Nippon Kagaku Feed].
A control product 2 was obtained by sprinkling 65 g (10%) of FS-32 manufactured by Co., Ltd. (iv) Regarding the present invention product 2 and the control product 2,
Palatability was tested in the same manner as in (iii). The results are shown in Table 2.

[Table] Example 3 (i) Solid feed 1 produced in the same manner as (iii) of Example 2
A pet animal feed (Product 3 of the present invention) was obtained by coating the surface of 20 g of soybean oil and 26 g of the powdered digestate prepared in (i) of Example 2 (65%). Separately, 1 kg of the above solid feed was mixed with 20 kg of soybean oil.
We prepared three types of products whose surfaces were coated with g, one as is (control product 3), one coated with 30 g of bonito extract [manufactured by Riken Vitamin Oil Co., Ltd.] (control product 4), and one coated with bonito extract [manufactured by Riken Vitamin Oil Co., Ltd.]. [Manufactured by Suzuki Fertilizer] 30g was sprinkled on it (control product 5). Bonito extract: Extract obtained by boiling bonito meat, grinding it into a paste, and extracting it with hot water. Bonito Mikusu Extract: An extract obtained by slicing the drippings, head, tail peduncle, and meat scraps produced when bonito is thawed and extracting them with water. (ii) Regarding product 3 of the present invention and control products 3 to 5 obtained above, a palatability test was conducted in the following manner. Test method Test animals: 16 cats Feeding amount: 80 g/day/head Feeding method: Four types of feed were fed to each cat in parallel. Test days: 1 week Measurement criteria for food intake: Food intake was measured 24 hours after feeding. Feed intake The average value of the feed intake of each feed relative to the total food intake is shown as a percentage. result

[Table] Example 4 (i) 1 kg of the following basic raw materials were mixed and molded using a heating and pressure extruder to produce solid feed. Example 2
The surface of the feed was coated with a mixture of 2 g of the powdered digested product prepared in step (ii) and 20 g of tallow to obtain pet animal feed (invention product 4). Separately, the above-mentioned solid feed itself (control product 6), 20 g of Fish Soluble [manufactured by Nippon Kagaku Feed Co., Ltd.: FS-32] and 20 g of tallow.
Surface coated with a mixture of
A product (control product 8) whose surface was coated with a mixture of 20 g of tallow and 20 g of tallow was prepared. Basic raw materials Corn 30 (wt%) Meat meal 20 (wt%) Soybean meal 15 Wheat flour 20 Yeast 3 Fish meal 3 Wheat germ 4 Vitamins, minerals 5 (ii) Invention product 4 obtained above and control product 6 -8, palatability was tested in the following manner. Test method Test animals: 3 Shiba Inu dogs, 3 Beagle dogs Feeding amount: 150 g/day/head Feeding method: Four types of feed were fed to the famous dogs in parallel. Test days: 1 week Food intake measurement criteria: Food intake was measured 1 hour after each feeding. Feed intake The average value of the feed intake of each feed relative to the total food intake is shown as a percentage. result

[Table] Example 5 (i) Powder of undigested bonito viscera Bonito viscera are immersed in boiling water at 90°C to inactivate the enzyme activity, and then minced using a die with a diameter of 5 m/m. This minced material is ground into a paste using a grinder, and then passed through a 20-mesh (opening 0.84 m/m) screen to create streaks.
Remove impurities, etc. Obtained paste 1
Add 200g of water per kg, stir to make a homogeneous state, then spray dry to powder undigested bonito innards.
Got 200g. (ii) Digested bonito viscera powder Bonito viscera are minced using a die with a diameter of 5 m/m, and kept at 47°C for 2 hours to allow self-digestion. When the mixture becomes almost mud-like, the temperature is raised to 90℃ to deactivate the enzyme. This is passed through a 20-mesh screen to remove undigested matter, streaks, impurities, etc. The resulting paste was concentrated to a water content of 48%, 400 g of water was added to 1 kg of this concentrate, and spray-dried to obtain about 500 g of digested bonito viscera powder. (iii) Mix the basic raw materials with the same composition as in (ii) of Example 1, mold them with a heating and pressure extruder to prepare a solid feed, and coat the surface of this feed with the undigested bonito viscera powder (i). Animal feed for pets was obtained by coating 3% each of control product 9) or (ii) digested bonito viscera powder (invention product 5). (iv) A palatability test was conducted on product 5 of the present invention and control product 9 obtained above in the following manner. Test method Test animals 16 cats (single cage house) Feeding amount 70 g/day/head Feeding method Two types of feed were fed to each cat in parallel. Number of test days: 5 days Measuring standard for food intake: Food intake was measured 24 hours after feeding. Feed intake The average value of the feed intake of each feed relative to the total food intake is shown as a percentage. result

[Table] Example 6 (i) A solid feed made from basic raw materials with the same composition as in (i) of Example 4 was coated with 2% beef tallow, and the undigested bonito innards of (i) obtained in Example 5 were coated with 2% beef tallow. Animal feed for pets was obtained by coating 2.5% each of powder (control product 10) or (ii) digested bonito viscera powder (invention product 6). (ii) Regarding product 6 of the present invention and control product 10 obtained above, dogs
The palatability was tested in the same manner as in (iii) of Example 5, except that 10 test animals (4 Sietland Sheepdogs, 4 Shiba Inu dogs, and 2 Maltese dogs) were used as test animals. The results are shown in Table 6.

[Table] As is clear from the results in Tables 5 and 6,
Pet animals showed a higher preference for digested bonito innards than for undigested bonito innards.

Claims (1)

[Claims] 1. An animal feed for pets, characterized in that it contains digested bonito internal organs. 2. The animal feed for pets according to claim 1, wherein the added amount of digested bonito internal organs is 0.1 to 15% by weight of the product as a dry weight. 3. A method for producing pet animal feed, which comprises digesting the internal organs of fresh bonito and adding the digested product thus obtained to pet animal feed. 4. The method for producing pet animal feed according to claim 3, wherein the digestion is carried out by autolysis. 5. The method for producing pet animal feed according to claim 3, wherein the digestion is carried out by adding a proteolytic enzyme. 6 The amount of digestate added is 0.1 of the product as dry weight.
The method for producing pet animal feed according to claim 3, wherein the amount is 15% by weight.