JPH04320652A - Method for supplying feed - Google Patents

Abstract

PURPOSE:To prevent the diseases and improve the breeding efficiency of a breeding swine by feeding the swine with a feed containing organic acid, etc. CONSTITUTION:A breeding swine is fed with a feed containing an organic acid selected from citric acid, malic acid, fumaric acid, succinic acid, lactic acid and acetic acid and/or a material containing the organic acid. The amount of the organic acid to be supplied to a breeding swine is preferably >=0.01g per day.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of feeding feed to pigs, which improves the growth rate of born piglets and allows them to fatten up in a healthy manner, as well as improving the reproductive efficiency of breeding sows.

0002

[Prior Art] Immediately after weaning, the feed physical properties of newborn piglets change from mainly liquid feed to mainly powdered feed, resulting in a temporary decrease in feed intake and frequent occurrence of diarrhea. This results in developmental stagnation. On the other hand, because breeding sows give birth to around 10 piglets at a time and nurse them, their physical strength is severely exhausted, and the return to heat immediately after weaning is often delayed, which significantly reduces breeding efficiency. This is a big problem for pig farmers. Although it is well known that the healthy rearing of sows leads to the healthy fattening of their piglets, the reality is that there is no surefire way to improve this.

[0003] Research and development on feed for pigs has mainly been carried out targeting post-weaned pigs, and although there is some knowledge regarding the use of acetic acid-containing substances, none of the studies have focused on post-weaned pigs. Therefore, unlike the present invention, the present invention is not intended for breeding sows, and even less for piglets born from breeding sows.

For example, in order to promote the growth of pigs, maintain their health, and prevent diseases by feeding acetic acid-containing substances to pigs, Japanese Patent Publication No. 55-46688 reported that vinegar was used as an acetic acid-containing substance. No. 1, which is characterized by feeding fruit vinegar or vinegar mixed with fruit vinegar in an amount of about 1% or more of the feeding amount in or outside the feed, and JP-A-63
Mixed feed for animals containing vinegar to reduce diarrhea and prevent diseases is known, such as No. 301755.

[0005] However, none of these prior art techniques concern or suggest feed for breeding sows, and furthermore, in the latter, it is essential to use sugars in addition to acetic acid-containing foods. In other words, there is nothing disclosed about the sole use of acetic acid-containing substances, and the final effect on fattening is unclear. I can't do it.

[0006] The present invention not only improves the reproductive efficiency of breeding sows by feeding them the specific feed according to the present invention, but also improves the reproductive efficiency of piglets born from these breeding sows. This relates to a technique for improving the growth rate of pigs, allowing them to grow healthily and increasing shipping efficiency, even though the feed is not fed to them, as described above. This was previously unknown, and even more so, it was possible to increase the shipping efficiency of piglets without feeding them feed.
In other words, the prior art does not even suggest that an effect completely different from the effect on the breeding sow can be exerted on the piglets indirectly via the breeding sow.

In other words, the present invention improves the growth rate and healthy growth of born piglets, and at the same time improves the breeding efficiency of breeding sows.
Organic acids and/or organic acid-containing substances are fed to breeding sows in the form of feed (although the feed is not fed to the piglets born from the feed, the above-mentioned effects on piglets are not achieved). This is a new technology that was previously unknown.

[0008]

[Problem to be solved by the invention] Usually around 8 months old,
Pigs weighing 120 to 130 kg are used as breeding sows, and after insemination and confirmation of conception, give birth to around 10 piglets after a gestation period of about 120 days, and a lactation period of around 20 to 30 days. After weaning, insemination is carried out for the next breeding. However, the delay in return to estrus after weaning, which is thought to be caused by physical exhaustion from gestation, childbirth, and lactation, leads to an extended open gestation period, which is a problem for pig farmers, as it reduces the turnover rate of breeding sows and wastes feed. This was a problem.

On the other hand, normally around 10 piglets are born from a mother sow, and they are raised with mother's milk, and from about the 10th day onwards, piglets for the suckling period are started being fed to compensate for the lack of milk and to get used to powdered feed. After starting, the pigs are weaned around 20 to 30 days and are raised only on suckling piglet feed, but they are not used to powdered feed.
Growth rate decreases due to stagnation of appetite and diarrhea due to indigestion. As a result, the daily weight gain for 10 to 20 days after weaning is lower than that before weaning, and during this period, growth is stagnant compared to before and after weaning, which ultimately leads to an extension of the fattening period, which is of concern to pig farmers. The impact it had on management was enormous.

0010

[Means for solving the problem] Pig farming has a relatively short fattening period, so the above-mentioned decrease in the turnover rate of breeding sows and pig pens, and deterioration of the breeding condition at the start of fattening are caused by In many cases, it is not possible to catch up, resulting in a huge loss for pig farmers.

[0011] As a result of intensive studies from various aspects on improving the breeding turnover rate of breeding sows, improving the growth rate of piglets, and preventing growth stagnation, we found that when acetic acid was fed to breeding sows, Not only was a significant improvement in physical strength recovered after giving birth to piglets and a reduction in the number of days required for the next return to estrus, confirming a significant increase in reproductive efficiency, but it was also truly astonishing that acetic acid was fed to the pigs. Piglets born from a mother pig are
It was also confirmed that even though no special treatment such as acetic acid feeding was applied, the growth rate improved, healthy fattening was achieved, and the shipping time was significantly shortened.

The present invention has finally been completed by discovering these extremely useful new findings, and as a result of further investigation, it was also confirmed that these remarkable effects are observed not only in acetic acid but also in organic acids in general. In particular, the present invention relates to a method for feeding feed to pigs, the basic gist of which is feeding an organic acid and/or a substance containing an organic acid to a breeding sow.

The present invention will be explained in detail below.

[0014] The organic acid used in the present invention may be any organic acid that can be eaten by animals, and examples include citric acid, malic acid, fumaric acid, succinic acid, lactic acid, and acetic acid. These may be synthetic organic acids or fermented organic acids, or those that contain these organic acids, such as those that have been mixed and adsorbed with feed etc., or those that have been mixed with alkali metals or alkaline earth metals. Organic acid salts in bound form can also be used as organic acid containing substances.

[0015] The brewed vinegar as an acetic acid-containing substance is a brewed vinegar obtained by alcohol-fermenting the juice of apples, grapes, tangerines, etc., or by adding alcohol to the fruit juice of apples, grapes, tangerines, etc., and subjecting it to acetic acid fermentation. In addition to fruit vinegar, rice vinegar and other grain vinegars are widely used. These vinegars are particularly preferred because they have a unique aroma of raw materials and can contribute to improving the palatability of pigs. In addition, these brewed vinegars can be adsorbed with cyclodextrin, sodium acetate, dextrin, etc., or mixed with bran, rice grains, vinegar lees, sake lees, etc.
An adsorbed powder type product can also be used as the acetic acid-containing material referred to herein.

In the present invention, in the case of not only acetic acid but also other fermented organic acids, the fermented mash itself, its filtrate, residue, or a concentrate thereof can be used without isolating the organic acid from the fermented mash after the completion of fermentation. It is also possible to use a dried product or a diluted product as the organic acid-containing material.

[0017] Furthermore, the present invention has an organic acid as a main active ingredient, and this may be added to drinking water and/or feed as it is and allowed to be freely ingested. The amount fed should be 0.01 g or more per pig per day, and it is desirable to increase the amount as appropriate depending on the situation of the sow.

[0018] Regarding the feeding period, it is preferable to feed the pig continuously during breeding after it has been confirmed that the pig will be kept as a breeding sow, and in particular, from one month or more before giving birth to the next feeding. The best time is until the onset of heat.

The present invention will be specifically explained below using experimental examples.

[0020]

[Experimental Example 1] A test was conducted using a breeding sow that had given birth for the first time. Various organic acids were diluted in drinking water and given at 1 g/day/head. The feeding of organic acids was continued after conception was confirmed until the next conception was confirmed. Each test was repeated twice to obtain the results shown in Table 1 below.

[0021]

[Table 1]

As is clear from the above results, by feeding various organic acids to breeding sows, the piglets grow smoothly, and the growth rate and weight gain after weaning are lower than those without additives. It was confirmed that this method not only significantly improved compared to the conventional method, but also made it possible to shorten the final shipping time, bringing great benefits to pig farmers. Furthermore, the number of days required for breeding sows to return to estrus was shortened, and breeding efficiency was improved, making it possible to further improve management efficiency.

[0023]

[Experimental Example 2] A test was conducted using a second breeding sow. Acetic acid was continuously fed after the second pregnancy was confirmed until the next third pregnancy was confirmed by mixing it with the feed. Each test was repeated three times, and the results shown in Table 2 below were obtained.

[0024]

[Table 2]

As is clear from the above results, by feeding 0.01 g/day or more of acetic acid as an organic acid to breeding sows, the piglets grow smoothly and the growth rate and post-weaning Not only was the weight gain significantly improved, but it was also possible to shorten the final shipping period. Furthermore, the number of days required for breeding sows to return to estrus was shortened, and breeding efficiency was clearly improved.

[0026]

[Experimental Example 3] A test was conducted using a second breeding sow. Citric acid was applied to breeding sows by spraying 1 g/head on their feed. At this time, a feeding test was conducted by changing the starting time of feeding as follows (salary continued until the next conception was confirmed). Each test was repeated three times and the results shown in Table 3 below were obtained.

[0027]

[Table 3]

As is clear from the above results, feeding of organic acids can be started at any time after conception is confirmed, which improves the growth rate and post-weaning weight gain of the born piglets, and lowers the final shipping weight. A significant reduction in the number of days required for delivery was also observed. The number of days required for the next estrus to return is definitely shortened,
This suggests that it is also very effective in maintaining the health of breeding sows.

The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to these Examples in any way.

[0030]

[Example 1] Three breeding sows in their third parturition were given commercially available rice vinegar (acetic acid concentration 4.5%) from the time of confirmation of conception until the time of weaning of the piglets.
W/V)) was mixed with the feed and fed at 100 ml/day/head. As a result, the average daily weight gain (kg/day/head) of piglets from weaning to day 60 was 0.3.
The weight was 75, far exceeding the average daily weight gain (kg/day/head) of 0.251 before weaning, and the weight reached 105 kg in 159 days, allowing it to be shipped. In addition, the growth rate was 100%, and the average number of days for the breeding sows to return to estrus was 7 days.

On the other hand, when breeding sows with the same number of births are not fed commercially available rice vinegar, the average daily weight gain (kg/day/head) of the piglets from weaning to day 60 is 0.3
00, and the average daily weight gain before weaning (kg/day・
(head) 0.260 was lower than when commercially available rice vinegar was fed, and growth stagnation occurred, so it took 185 days for the dog to reach 105 kg. Furthermore, the breeding rate was only 85%, and the average number of days the cows returned to estrus was 11 days.

[0032]

[Example 2] Citric acid (for food additives) was sprinkled on the feed of four breeding sows in their second birth from two months before giving birth until the piglets were weaned at a rate of 10 g/day per head. I paid.

As a result, the average daily weight gain (kg/day/head) from weaning to the 35th day of piglets that gave birth to an average of 12 piglets was the same as the average daily weight gain (kg/day/head) before weaning.・
The result was 0.305, which is 1.39 times that of the head). The average number of cows at weaning was 11.5, the growth rate was 95.8%, and the animals finally reached a weight of 105 kg in 169 days, allowing them to be shipped. In addition, the average number of days for the breeding sows to return to estrus was 6.5 days.

[0034]

[Example 3] Two first-born breeding sows were given 3 g/day of fumaric acid diluted in their drinking water from one week before giving birth until the piglets were weaned. As a result, the average daily weight gain (kg/day/head) of the born piglets from weaning to the 60th day was 0.332, and the average daily weight gain (kg/day/head) before weaning was 0.332. )0.235, growth stagnation immediately after weaning was prevented. The growth rate at this time was 95%, and we were able to achieve shipment in 163 days. This breeding sow was in good health, and the next insemination was completed promptly after weaning.

On the other hand, when fumaric acid was not fed, the results in each plot were significantly lower than those in the fed plots, especially the return to estrus was delayed, the next insemination was completed, and conception was confirmed only 2 months after weaning. This happened after the above had passed.

[0036]

[Effects of the Invention] According to the present invention, breeding sows can be used easily and efficiently, and at the same time, significant effects can be seen in the rearing of piglets, so a significant increase in income can be expected for pig farmers. .

Claims (4)

[Claims] 1. A method for feeding feed to pigs, which comprises feeding an organic acid and/or an organic acid-containing substance to a breeding sow. 2. A pig characterized by feeding an organic acid and/or an organic acid-containing substance to a breeding mother pig, thereby improving the growth rate of the piglets born therefrom and/or fattening them in a healthy manner. feeding method. 3. The method for feeding feed to pigs according to claim 1 or 2, characterized in that the amount of organic acid fed per breeding mother pig per day is 0.01 g or more. 4. The method for feeding pigs according to any one of claims 1 to 3, wherein the organic acid is citric acid, malic acid, fumaric acid, succinic acid, lactic acid and/or acetic acid. Feed feeding method.