JPH06209720A - Method for improving meat quality - Google Patents

Abstract

PURPOSE:To obtain meat having high commercial value by feeding a domestic animal with a formula feed obtained by compounding a conventional feed with a material containing tannin, caffeine, etc., thereby improving the meat-quality and color of the domestic animal by the antagonistic action of caffeine and tannin. CONSTITUTION:A material containing tannin, caffeine, etc., such as green tea, black tea and coffee beans is mixed to conventional feed in an amount of 0.5-20wt.%. As an alternative, the feed is incorporated with 1-50wt.% of the extraction residue of the above material or with a stock liquid or concentrated liquid in the case of an extract obtained by adding 3-10 pts. of hot water to 1 pt. of the above material. When the obtained formula feed is applied to a domestic animal such as chicken, cattle or pig, the meat-quality and color can be improved and meat having improved commercial value can be obtained by the action of caffeine to stimulate the nerve and raise the blood pressure and the action of tannin to depress the blood pressure, inhibit the absorption of fat and suppress the cholesterol concentration in blood.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a feed for improving meat quality of livestock and a method for improving meat quality.

[0002]

BACKGROUND OF THE INVENTION Green tea, black tea or coffee beans contain caffeine or tannin. Caffeine has the effects of exciting nerves and increasing blood pressure, while tannin has the effects of suppressing blood pressure, inhibiting fat absorption, and suppressing blood cholesterol concentration, and mutually antagonistically work. Studies on the functions of green tea and coffee in humans have recently progressed. Although the tumor action has been announced, it is thought that this is due to the action of catechin,
There are many unclear points about tea, black tea, and coffee itself because they have an antagonistic effect with caffeine. On the other hand, there has been no report on the effectiveness of livestock production by incorporating these materials into livestock feed. The tannin- and caffeine-containing material referred to in the present invention is green tea, black tea, coffee beans, an extract thereof, an extract meal or catechin itself. Green tea and black tea refer to all green and black teas of the large leaf type (Assam species), the small leaf species (Chinese species) and the middle leaf species (Chinese Assam species) whose main name is Camella sinensis L, and coffee is the scientific name Coffia.
It mainly refers to arabica L, Arabica, Robusta, and Riberica.

[0003]

[Means for Solving the Problems] The present invention can reduce the fat accumulated in the abdominal cavity of livestock by adding a tannin / caffeine-containing material to a normal livestock feed and providing a chewy texture. It is possible to obtain firm meat with a low cholesterol content and meat with a reddish candy color and a high commercial value. Although the pay period is not particularly limited, for example, in the case of chickens, it is possible to pay from the first chicks to shipping (usually about 8 weeks). It can be shortened to about a week.

Example 1 A test was conducted to examine the growth of broilers of green tea, black tea, and coffee beans, feed efficiency, and the amount of accumulated fat in the abdominal cavity.
A feed prepared by adding 1% and 5% of green tea, black tea, and coffee beans to a normal feed was fed to a broiler for 7 weeks from the first chicks. The feed has the same nutritional components as the feed for commercial broilers (for the previous term: crude protein 21%, metabolic energy 3,100ca)
l / kg, late use: 19.0%, 3,150 respectively
Then, the one containing 5% of cellulose powder was used as a control feed, and a predetermined amount of green tea, black tea and coffee beans was replaced with cellulose powder. There are 40 chicks in each group, 40 males in total, 8 in total
The number was 0. Food and water were available ad libitum. The results are shown in the table below.

[Table 1] As can be seen from the above table, the amount of fat accumulated in the abdominal cavity of the broiler was significantly reduced by using green tea or the like. However, except for 1% green tea and 1% coffee, the weight gain also decreased as the amount used increased.

Example 2 Growth of green tea meal, black tea meal and coffee meal broiler,
The effects of feed efficiency and fat accumulation in the abdominal cavity were tested. The feed containing 1%, 5%, and 10% of the air-dried material of each meal was fed to the broiler for 8 weeks from the first chicks.
The design of the feed was the same as in Example 1. The test results are shown in the table below.

[Table 2]

From the above table, the amount of accumulated fat in the abdominal cavity was significantly reduced by feeding each meal. However, no difference was observed between the 1% plots of tea meal and coffee meal and the control plot.

Example 3 The improvement of the color of broiler breast meat by coffee beans and coffee grounds was tested. Broiler breasts are generally less reddish and have the drawback of not being white and fresh. Meat with a strong reddish color and a strong amber color has a high commercial value, and there is a strong demand for the development of such meat. A feed containing 1% and 5% of coffee beans and coffee grounds added to the feed was fed from 3 weeks to 7 weeks. The meat was slaughtered at the age of 7 weeks, the breast meat was collected, and the color tone was tested by a color difference meter, and a sensory test was performed by a panel of 18 people (6 males and 12 females).

(A) Measurement result by color difference meter L a b control group 51.0 7.6 18.1 coffee beans 1% 51.2 8.0 17.8 5% 50.7 9.8 17.1 coffee Lean 1% 51.3 8.3 17.5 5% 50.8 10.5 16.5 L Brightness a Redness b Yellowness (using Tokyo Denso Co., Ltd. Color Ace model PC-P3) Coffee beans, coffee meal It was confirmed that the breast meat in the donor area had a deep reddish color and a strong amber color. The colorimetric results obtained by the color difference meter show that the redness is improved in the coffee beans and coffee meal feeding areas. Amber color cannot be measured with a color difference meter, so a visual sensory test was performed. (B) Sensation test for flesh color A score was scored by a 5-point method in which the most preferable color was 5 points, the preferable color was 3 points, and the normal color was 1 point. From the above-mentioned test results, it was found that the coffee meat and the breast meal in the coffee meal feeding group had an increase in redness and candy color as compared with the control group, and the commercial value was significantly improved.

Example 4 The effect of lowering cholesterol in chicken by green tea, black tea, green tea meal and black tea meal was examined. The broilers tested in Example 1 were slaughtered in groups of 6 (3 males and 3 females), and the breast meat was collected and analyzed for each test group. As a result, the cholesterol content of the meat provided with 5% of green tea and black tea was reduced by 11 to 22% as compared with the control group. Control area 55mg / 100g Green tea 5% 49 Black tea 5% 43

Example 5 A taste test of chicken fed with green tea, black tea and coffee beans was conducted. Of the broilers tested in Example 1, the breast meat of the section fed with 5% of green tea, black tea and coffee beans was sampled and a tasting test was conducted. For tasting, place the breast meat of each ward on a flat plate, wrap it, cook in a microwave for 6 minutes, cut into 2 cm squares,
I tasted it. The measurement was conducted by using 5 items of oil paste, chewy texture, chicken odor, and deliciousness, and a 5-point method (5 points for strongest, 3 points for normal, and 1 point for weakest).

[Table 3] As a result of the test, the breast meat of chicks fed with 5% of green tea, black tea and coffee beans has less fat riding method than the control group,
It was found that the chicken has little odor and has a strong overall taste. It was found that the breast meat in the 5% green tea feeding area had the most refreshing, chewy and crunchy and hard taste.

Example 6 A taste test was conducted on chickens fed with green tea meal, black tea meal and coffee meal. Of the broilers tested in Example 2, 10% of each of green tea meal, black tea meal and coffee meal were fed, and the breast meat was collected and subjected to a tasting test. The test was conducted in the same manner as in Example 5.

[Table 4] As a result of the test, the reaction to the taste of chicken in the green tea lees, black tea lees and coffee lees feeding area was found to be almost the same as in Test 5.

Example 7 A test was conducted on the feeding period of green tea and coffee beans. Feeding green tea or coffee beans can reduce the fat content in the abdominal cavity of broilers. But,
An increase in the amount of green tea or coffee meal supplied is not preferable in terms of production, because the growth of broilers is reduced and the feed intake is also reduced. Therefore, in order to reduce the adverse effects of feeding and to reduce the production cost, we examined the effects of shortening the feeding period of green tea and coffee beans on growth and abdominal fat accumulation. 5% of green tea and coffee beans are added to the feed, 4 weeks of feeding period from 3 weeks to 7 weeks and 10% of green tea and coffee beans are added respectively, and the feeding period is from 6 weeks to 7 weeks 1 A weekly salary group was set up. For green tea and coffee beans, cellulose powder, which was previously used as a 10% feed in the control group, was substituted by each addition amount. 80 chicks (40 males and 40 females) were used for each chick. Food and water were available ad libitum.

[Table 5] It was found that the reduction in growth due to green tea and coffee meal feeding was reduced by shortening the feeding period. Even if the pay period was limited to one week before shipment, the abdominal fat accumulation rate was reduced by about 10 to 20% by increasing the pay amount to 10%, and the intended purpose could be achieved.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Kenji Otowaki 248 Shioda, Mogi-cho, Haga-gun, Tochigi Prefecture

Claims (5)

[Claims] 1. A method for improving meat quality of livestock, which comprises blending a material containing tannin, caffeine and the like into a normal feed and feeding the blended feed to livestock. 2. The material containing tannin, caffeine, etc. is green tea, black tea, coffee beans, an extract thereof, an extracted meal, and tannin (catechin) extracted from green tea or black tea is also included. the method of. 3. Green tea, black tea, and coffee beans are mixed in an amount of 0.5 to 20% by weight with respect to the feed, and the extracted meal is added in an amount of 1 to 50% by weight with respect to the feed. The method according to claim 1, wherein in the case of an extract obtained by adding twice the amount of hot water, the undiluted solution or the concentrated solution is added to the feed. 4. The method according to any one of claims 1 to 3, wherein the livestock is chicken, cow or pig. 5. A feed for improving meat quality of livestock, which comprises a material containing tannin, caffeine and the like and an ordinary feed.