JP2784071B2 - Chicken feed - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to chicken feed. Specifically, it has an excellent effect on improving nutrition and feed efficiency, has an effect of improving egg production rate and egg weight in laying hens, and can not only suppress body fat formation in broilers, but also chicken The present invention relates to a feed for chickens having an antiprotozoal disease effect on hens.

(Problems to be Solved by Conventional Techniques and Inventions) In recent years, compound feeds for chickens have tended to be so-called concentrated feeds designed to have high protein and high calories in order to increase feed efficiency. However, feeding such a concentrated feed causes a great stress on the physiology of the chicken, and puts a burden on the liver, which is particularly important for egg production and the productivity of gaining weight, resulting in enlarged liver and abnormal accumulation of fat. This causes the problem of reduced productivity.

Laying hens have a very long breeding period, and the breeding method is mainly two breeders in cages, and they are sensitive to changes in temperature in the summer and winter, causing stress due to these causes and reducing the spawning rate. There are problems such as a decrease in the quality of the eggs such as eggshell quality, and an increase in the egg breaking rate.

To solve these problems, a vitamin mixture or an amino acid mixture has been added, and a calcium source has been added in the form of an inorganic substance such as calcium carbonate, calcium phosphate, oyster shell, but the problem has not yet been solved.

Also, meat chickens, especially broilers, are bred for a short period of time and tend to consider increasing the rate of weight gain only. Although the rate of increase was significantly improved, subcutaneous fat and body fat also increased. These fats also have a bad appearance and give consumers the impression that they are buying unnecessary parts, which is a cause of a decrease in commercial value. To address these problems, methods such as reducing the amount of added fats and oils and administering drugs, feed additives, and the like have been studied, but have not been able to solve the problems.

Further, in these poultry industries, diseases caused by protozoa, such as coccidiosis, leukocytosonosis,
Various trypanosomiasis, leishmaniasis and the like are known, and sulfa drugs, quinoline derivatives, nucleic acid derivatives, quinazoline derivatives, guanidine derivatives, folate antagonists, polyether antibiotics and the like are used as prophylactic and therapeutic agents. However, since these are expensive and have a very narrow safety margin, there are many problems in using them in large amounts by mixing them with feeds or the like.

(Means for Solving the Problems) The present inventors have conducted intensive research to improve the above-mentioned problems of the conventional chicken feed, and as a result, the chicken feed has 6 to 6 carbon atoms.
By adding 10 medium-chain fatty acids, the abnormal accumulation of fat was improved, further improved nutrition, improved feed efficiency, and found to have an excellent effect on improving productivity, and completed the present invention. .

That is, the present invention provides a chicken feed, characterized by containing 0.5 to 20 wt% medium chain fatty acid C ₆ -C _10.

 Next, the present invention will be described in detail.

Caproic acid C ₆ -C ₁₀ fatty acid for use in the present invention, such as capric acid, caprylic acid, commonly referred to as medium chain fatty acids, in a general animals the absorption conventional long chain fatty acid is a lymphoid On the other hand, because it is performed in the portal system,
It has a characteristic that it has a high absorption rate, has no accumulation property, and is mostly consumed as energy.

The present inventors have been examining the effect of reducing the egg laying rate due to high temperature stress in summer and improving the rise of bankruptcy eggs mainly in laying hens, but increasing the feeding rate in summer in the chicken feed of the present invention As a result, an excellent effect was exhibited in improving the egg laying rate, increasing the egg weight, and further decreasing the egg breaking rate.

In addition, when a specific amount of the medium-chain fatty acid of the present invention was added to a meat chicken, particularly a broiler feed, based on these effects, it did not affect the increase in the amount of sex but only the formation of body fat. It has been found that it has an excellent effect of suppressing meat quality.

Furthermore, it was found that the compound exhibited a disease-suppressing effect on diseases caused by protozoa, particularly on coccidiosis.

Initially, we examined the effects of long-chain fatty acids on egg laying rate and egg breaking rate in laying hens.
No improvement in egg weight or egg breaking rate was observed, and only the amount of gain increased. On the other hand, the medium-chain fatty acid used in the present invention exerted a significant effect, and the amount of gain was not excessive, but was ideal.

Similarly, broilers were also examined for the effect of increasing body weight and suppressing body fat formation using long-chain fatty acids. The long-chain fatty acids did not show an effect of suppressing body fat formation.

During the broiler test, coccidiosis was observed in chickens to which long-chain fatty acids were administered, but these diseases did not occur in chickens to which medium-chain fatty acids were administered. When the effects of medium-chain fatty acids due to infection were confirmed, a remarkable inhibitory effect on coccidiosis was observed.

The amount of medium-chain fatty acids of C _{6 to} C ₁₀ used in the present invention in chicken feed is 0.5 to 20% by weight, preferably 1.0 to 10% by weight.
It is. In addition, conventional compound feeds are natural fats and oils (carbon number 16 ~
Long chain fatty acid triglyceride whose main component is 18 fatty acids) is blended, but instead of all or a part thereof, the medium chain fatty acid according to the present invention may be blended or additionally blended. Can also achieve the object of the present invention.

(Examples) Next, the present invention will be specifically described with reference to examples, but the present invention is not limited to these examples.

Example 1 Medium-chain fatty acids used in the present invention were added to the basic feed of laying hens as shown in Table 1 in an amount shown in Table 2 and the laying hens were 35 weeks old.
Spawning rate, egg weight,
A test was performed for egg breaking rate.

As shown in Table 3, the test results show that
The effect of increasing the egg weight and decreasing the egg breaking rate was shown.

Example 2 Broiler compound feed shown in Table 4 (for first term, up to 21 days old) and Table 5 (for late term, 21 days to 57 days old) were prepared, and 0 day old chunky male chicks were 57 days old. Until the last day, six birds were dismantled in each section, and the weight of abdominal adipose tissue (hereinafter referred to as abdominal fat) was examined.

The results clearly showed the effect of reducing abdominal fat as shown in Table 6.

Example 3 Broiler compound feeds shown in Table 4 (for the first half period, up to the 21st day) were prepared, and each feed was preliminarily bred for 5 birds in each section until the 8th day old, and Eimeria tenella was fed on the 8th day. (Eime
ria tenella) strain was infected at 1 × 10 ⁵ vials, and oocyst excretion was measured for 8 days. Necropsy was performed 8 days later, and cecal mucosal lesions were observed.

As a result, as shown in Table 7, oocyst excretion was remarkably reduced and cecal lesions were hardly observed, indicating that chicken coccidiosis was significantly suppressed.

Claims (1)

(57) [Claims] A chicken feed comprising 0.5 to 20% by weight of a medium-chain fatty acid having 6 to 10 carbon atoms.