Method for treating discarded chickens

Abstract

To provide a method for treating discarded chickens, capable of safely and properly treating chickens to be discarded by killing treatment or the like (rigor mortis chickens).SOLUTION: A method for treating discarded chickens includes a first arrangement step of arranging highly water absorbing polymer 2 at a bottom of a treatment container 1, and a charging step of charging the discarded chickens 3 into the treatment container 1. The treatment method includes a second arrangement step of further arranging super absorbent polymer 2 on the discarded chickens 3 in the treatment container 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for disposing of chickens that are to be disposed of by culling or the like. [Background technology]

[0002] When highly pathogenic avian influenza (hereafter simply referred to as "avian influenza") breaks out, prefectural governors issue orders to cull chickens at poultry farms. The culled chickens are sterilized with lime, packed into flexible container bags, and buried in the ground.

[0003] When chickens are slaughtered, rigor mortis sets in. When these rigor mortis-stricken chickens are packed into flexible container bags, the rigor mortis-stricken chicken carcasses can break through the bags. While the potential problem of broken flexible container bags (not limited to those caused by rigor mortis-stricken chickens) was recognized, no specific countermeasures had been implemented. However, if a flexible container bag containing chicken carcasses breaks, there is a possibility that the chicken's body fluids will leak from the broken area. The risk of body fluid leakage from the broken area increases particularly when flexible container bags are stacked two high for transport, putting the bag under pressure. Furthermore, because chicken body fluids are infectious organic waste, there are concerns that if chicken body fluids leak into the external environment, they could cause secondary contamination.

[0004] Known methods for treating liquid infectious organic waste such as body fluids include adjusting the moisture content by mixing sawdust or the like with the object to be treated, as described in Patent Document 1. The infectious organic waste treatment method described in Patent Document 1 involves adjusting the moisture content of infectious organic waste mixed with sawdust or the like to 30-60%, mixing it with microorganisms to cause fermentation, and sterilizing the infectious organic waste with the heat of fermentation. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-153843 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the infectious organic waste treatment method in Patent Document 1 is intended for treating blood generated in medical settings (donated blood that cannot be used for medical reasons) and medical waste contaminated with blood, and is not intended for use in non-medical settings such as poultry farms. Furthermore, because the body fluids exuded from chickens slaughtered at poultry farms have different components than human blood, it is unclear whether they can be treated using the infectious organic waste treatment method in Patent Document 1. Even if the sawdust used in the infectious organic waste treatment method in Patent Document 1 were packed into a flexible container bag together with chicken carcasses, sawdust, while absorbent, has poor water retention, so even if it were able to absorb the chicken's body fluids, it would likely release them easily under pressure.

[0007] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a method for disposing of discarded chickens that can safely and appropriately dispose of chickens that have been disposed of due to slaughter or other reasons (chickens that have become rigor mortis). [Means for solving the problem]

[0008] The characteristic configuration of the method for processing discarded chickens according to the present invention to solve the above problems is as follows: a first disposing step of disposing a superabsorbent polymer at the bottom of a treatment container; a step of introducing discarded chickens into the processing container; The purpose is to encompass the above.

[0009] According to the present method for processing discarded chickens, a superabsorbent polymer is placed at the bottom of the processing container. Therefore, if body fluids leak from discarded chickens after they are placed in the processing container, the superabsorbent polymer placed at the bottom of the processing container can absorb the body fluids. Even if the processing container is ruptured due to rigor mortis of the chickens, the superabsorbent polymer can retain the absorbed body fluids of the chickens, preventing leakage of the body fluids outside the processing container. Furthermore, because the superabsorbent polymer has excellent water retention properties, there is no risk of body fluids leaking outside the processing container, even when pressure is applied, such as when two processing containers are stacked and transported.

[0010] In the method for treating discarded chickens according to the present invention, It is preferable to include a second placing step of further placing a highly water-absorbent polymer on the discarded chickens in the processing container.

[0011] According to the method for treating cull chickens of this configuration, the superabsorbent polymer is placed at both the bottom and the top of the treatment container, so that the cull chickens are sandwiched between the superabsorbent polymers from above and below inside the treatment container. Therefore, the body fluids exuding from the cull chickens are reliably absorbed and retained by the superabsorbent polymers located above and below, and leakage of the body fluids outside the treatment container can be reliably prevented.

[0012] Another characteristic feature of the method for processing discarded chickens according to the present invention to solve the above problems is: a first disposing step of disposing a superabsorbent polymer at the bottom of a treatment container; a simultaneous introduction step of introducing discarded chickens and a superabsorbent polymer into the processing container at the same time; The purpose is to encompass the above.

[0013] According to the method for treating cull chickens of this configuration, a superabsorbent polymer is placed at the bottom of the treatment container, and when the cull chickens are placed into the treatment container, the cull chickens are placed at the same time as the superabsorbent polymer, so that the superabsorbent polymer adheres evenly to the cull chickens, and if body fluids ooze out from the cull chickens, the body fluids can be reliably absorbed by the superabsorbent polymer attached to the cull chickens and the superabsorbent polymer placed at the bottom of the treatment container. Furthermore, even if the treatment container should break due to rigor mortis of the chickens, the superabsorbent polymer can retain the absorbed chicken body fluids, preventing leakage of the body fluids outside the treatment container.

[0014] In the method for treating discarded chickens according to the present invention, It is preferable to include a second placing step of further placing a highly water-absorbent polymer on the discarded chickens in the processing container.

[0015] According to the method for treating cull chickens of this configuration, the superabsorbent polymer is placed at two locations, the bottom and the top of the treatment container, so that the superabsorbent polymer adheres sufficiently to the cull chickens in the treatment container, and the cull chickens are sandwiched between the superabsorbent polymers from above and below. Therefore, the body fluids exuding from the cull chickens are more reliably absorbed and retained by the superabsorbent polymers attached to the cull chickens and the superabsorbent polymers located above and below, and leakage of the body fluids to the outside of the treatment container can be reliably prevented.

[0016] In the method for treating discarded chickens according to the present invention, It is preferable that the amount of superabsorbent polymer used in each disposing step is set so that the amount of superabsorbent polymer used in the first disposing step is greater than the amount of superabsorbent polymer used in the second disposing step.

[0017] According to the present method for treating discarded chickens, the amount of superabsorbent polymer used in the first arrangement step (i.e., the amount of superabsorbent polymer placed at the bottom) is greater than the amount of superabsorbent polymer used in the second arrangement step (i.e., the amount of superabsorbent polymer placed at the top). Therefore, even if a large amount of body fluids seeps out from the discarded chickens, the body fluids can be reliably absorbed and retained at the bottom of the treatment container.

[0018] In the method for treating discarded chickens according to the present invention, The total amount of the superabsorbent polymer used is preferably 2% by weight or more based on the total weight of the discarded chickens.

[0019] According to the present method for treating cull chickens, by using a total amount of highly absorbent polymer of 2% by weight or more of the total weight of cull chickens, it is possible to reliably absorb and retain body fluids exuded from cull chickens.

[0020] In the method for treating discarded chickens according to the present invention, The water absorption capacity of the highly water-absorbent polymer is preferably 100 to 1000 times its own weight when absorbing pure water.

[0021] According to the method for treating discarded chickens of this configuration, the water absorption capacity of the superabsorbent polymer is 100 to 1000 times its own weight when absorbing pure water, so that the polymer can reliably absorb body fluids exuded from discarded chickens, and even if external moisture enters the treatment container, the polymer does not swell excessively due to absorption of the moisture, thereby preventing damage to the treatment container and making it easy to handle.

[0022] In the method for treating discarded chickens according to the present invention, The discarded chickens are preferably those that have been culled due to an outbreak of avian influenza.

[0023] The method for processing discarded chickens of this configuration can effectively address the problem of body fluids leaking from processing containers, particularly when chickens culled due to an outbreak of avian influenza damage the processing container due to rigor mortis. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1 is an explanatory diagram of a method for treating discarded chickens according to each embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following describes embodiments of the method for treating discarded chickens of the present invention, but the present invention is not limited to these embodiments.

[0026] The present inventors have investigated various methods for treating chicken body fluids, and have noted that superabsorbent polymers (SAPs), which are used to treat muddy water in civil engineering works, can absorb water of various properties. They suspected that such superabsorbent polymers might be capable of absorbing and retaining chicken body fluids. As will be explained in detail in the Examples below, they actually used superabsorbent polymers to conduct absorption and retention tests (leakage tests) of simulated body fluids simulating chicken body fluids, and confirmed that superabsorbent polymers have the ability to absorb and retain chicken body fluids. The present inventors have discovered that chickens can be safely and appropriately disposed of by utilizing the properties of these superabsorbent polymers, and have thus completed the present invention. Specifically, the method for disposing of discarded chickens of the present invention involves treating chickens that are to be disposed of with a superabsorbent polymer, and is particularly intended for disposing of chickens that have been culled due to an outbreak of avian influenza.

[0027] <Highly absorbent polymer> Examples of the highly water-absorbent polymer used in the present invention include polyacrylic acid polymers, polymethacrylic acid polymers, polyvinyl acetate polymers, polyvinyl alcohol polymers, carboxymethyl cellulose polymers, etc. Among these, a preferred highly water-absorbent polymer is sodium polyacrylate, which is a typical polyacrylic acid polymer.

[0028] The water absorption capacity of the superabsorbent polymer is preferably 100 to 1,000 times, and more preferably 200 to 600 times, its own weight when absorbing pure water. If the water absorption capacity of the superabsorbent polymer is equal to or greater than the lower limit of the above range, it can reliably absorb body fluids exuded from cull chickens. Furthermore, if the water absorption capacity of the superabsorbent polymer is equal to or less than the upper limit of the above range, for example, when a flexible container bag filled with cull chickens and the superabsorbent polymer is buried in the ground, even if external moisture such as rainwater penetrates into the flexible container bag, the superabsorbent polymer will not swell excessively due to water absorption, thereby preventing damage to the flexible container bag and making it easier to handle.

[0029] The molecular weight of the superabsorbent polymer is 3.0 x 10 as the weight average molecular weight (Mw). 4 ~1.0×10 6 If the molecular weight of the superabsorbent polymer is within the above range, it can reliably absorb the body fluids exuded from culled chickens without excessive swelling due to absorption, making it easy to handle. The weight average molecular weight (Mw) of the superabsorbent polymer can be determined in polystyrene equivalent terms by measurement using gel permeation chromatography (GPC).

[0030] The total amount of superabsorbent polymer used is preferably 2% by weight or more, more preferably 3% by weight or more, based on the total weight of cull chickens. If the total amount of superabsorbent polymer used is 2% by weight or more based on the total weight of cull chickens, body fluids exuded from the cull chickens can be reliably absorbed and retained.

[0031] <How to dispose of discarded chickens> The basic principle of the method for treating cull chickens of the present invention is that a highly absorbent polymer that has been brought into contact with cull chickens in a treatment container absorbs and retains body fluids exuded from the cull chickens. A typical treatment container is a flexible container bag (hereinafter referred to as a "flexible container bag"). A typical cylindrical flexible container bag has a diameter of 1100 mm, a height of 1100 mm, and a capacity of 1000 L.

[0032] Hereinafter, embodiments of the method for treating discarded chickens of the present invention will be described with reference to the drawings. Figure 1 is an explanatory diagram of the method for treating discarded chickens according to each embodiment.

[0033] First Embodiment Fig. 1(a) is an explanatory diagram of a method for treating cull chickens according to a first embodiment. In the first embodiment, first, a superabsorbent polymer 2 is placed at the bottom (lower part) of a flexible container bag 1, which is a treatment container (first placing step). The first placing step is performed by pouring the superabsorbent polymer 2 into the flexible container bag 1. Next, cull chickens 3 are poured into the flexible container bag 1 (putting step). The putting step is performed until the cull chickens 3 reach 50 to 90% of the capacity of the flexible container bag 2, and the putting operation of the cull chickens 3 may be performed all at once or in several steps.

[0034] According to the first embodiment, the superabsorbent polymer 2 is disposed at the bottom of the flexible container bag 1, and therefore, if body fluids seep out from the discarded chickens 3 after the step of placing discarded chickens 3 into the flexible container bag 1 is carried out, the superabsorbent polymer 2 disposed at the bottom of the flexible container bag 1 can absorb the body fluids. Even if the flexible container bag 1 is ruptured due to rigor mortis of the chickens, the superabsorbent polymer 2 can retain the absorbed chicken body fluids as they are, and therefore, leakage of the body fluids to the outside of the flexible container bag 1 can be prevented. Furthermore, because the superabsorbent polymer 2 has excellent water retention properties, there is no risk of body fluids leaking out of the flexible container bag 1 even when pressure is applied, such as when the flexible container bags 1 are transported in two layers.

[0035] Second Embodiment 1(b) is an explanatory diagram of a method for treating cull chickens according to a second embodiment. In the second embodiment, in addition to the first placing step and the charging step described in the first embodiment, a superabsorbent polymer 2 is further placed on (the upper part of) the cull chickens in the flexible container bag 1 (a second placing step). The second placing step is preferably performed by evenly scattering the superabsorbent polymer 2 on top of the cull chickens 3.

[0036] According to the second embodiment, the superabsorbent polymer 2 is disposed at two locations, the bottom and the top of the flexible container bag 1, so that the cull chickens 3 are sandwiched from above and below by the superabsorbent polymer 2 inside the flexible container bag 1. Therefore, the body fluids exuding from the cull chickens 3 are reliably absorbed and retained by the superabsorbent polymers 2 positioned above and below, and leakage of the body fluids to the outside of the flexible container bag 1 can be reliably prevented.

[0037] In the second embodiment, it is preferable to set the amount of superabsorbent polymer 2 used in each arranging step so that the amount of superabsorbent polymer 2 used in the first arranging step (i.e., the amount of superabsorbent polymer 2 placed at the bottom) is greater than the amount of superabsorbent polymer 2 used in the second arranging step (i.e., the amount of superabsorbent polymer 2 placed at the top). By setting the amount of superabsorbent polymer 2 used in this way, even if a large amount of body fluids oozes from the discarded chickens 3, the body fluids can be reliably absorbed and retained at the bottom of the flexible container bag 1.

[0038] Third Embodiment FIG. 1(c) is an explanatory diagram of a method for treating cull chickens according to a third embodiment. In the third embodiment, first, superabsorbent polymer 2 is placed at the bottom (lower part) of flexible container bag 1 (first placing step). The first placing step is performed by pouring superabsorbent polymer 2 into flexible container bag 1. Next, cull chickens 3 and superabsorbent polymer 2 are simultaneously poured into flexible container bag 1 (simultaneous pouring step). Here, "concurrently" pouring does not necessarily mean pouring cull chickens 3 and superabsorbent polymer 2 into flexible container bag 1 at exactly the same time. For example, cull chickens 3 and superabsorbent polymer 2 may be poured alternately into flexible container bag 1, or cull chickens 3 coated with superabsorbent polymer 2 are poured into flexible container bag 1. This can also be considered simultaneous pouring as long as cull chickens 3 and superabsorbent polymer 2 are poured into flexible container bag 1 throughout the simultaneous pouring step. The simultaneous charging step is carried out until the discarded chickens 3 reach 50 to 90% of the capacity of the flexible container bag 1, and the charging operation of the discarded chickens 3 may be carried out all at once or in several batches.

[0039] According to the third embodiment, the superabsorbent polymer 2 is placed at the bottom of the flexible container bag 1, and further, when the cull chickens 3 are placed into the flexible container bag 1, the cull chickens 3 are placed at the same time as the superabsorbent polymer 2, so that the superabsorbent polymer 2 adheres evenly to the entire surface of the cull chickens 3, and if body fluids seep out from the cull chickens 3, the body fluids can be reliably absorbed by the superabsorbent polymer 2 attached to the cull chickens 3 and the superabsorbent polymer 2 placed at the bottom of the flexible container bag 1. Furthermore, even if the flexible container bag 1 should rupture due to rigor mortis of the chickens, the superabsorbent polymer 2 can retain the absorbed chicken body fluids, preventing leakage of the body fluids to the outside of the flexible container bag 1.

[0040] Fourth Embodiment 1(d) is an explanatory diagram of a method for treating cull chickens according to a fourth embodiment. In the fourth embodiment, in addition to the first placing step and simultaneous charging step described in the third embodiment, a superabsorbent polymer 2 is further placed on (the upper part of) the cull chickens 3 in the flexible container bag 1 (a second placing step). The second placing step is preferably performed by evenly scattering the superabsorbent polymer 2 on the cull chickens 3.

[0041] According to the fourth embodiment, the superabsorbent polymer 2 is disposed in two locations, at the bottom and top of the flexible container bag 1, so that the superabsorbent polymer 2 is sufficiently attached to the cull chickens 3 inside the flexible container bag 1, and the cull chickens 3 are sandwiched from above and below by the superabsorbent polymer 2. Therefore, the body fluids exuding from the cull chickens 3 are more reliably absorbed and retained by the superabsorbent polymer 2 attached to the entire cull chickens 3 and the superabsorbent polymers 2 positioned above and below, and leakage of the body fluids to the outside of the flexible container bag 1 can be reliably prevented.

[0042] In the fourth embodiment, it is preferable to set the amount of superabsorbent polymer 2 used in each arranging step so that the amount of superabsorbent polymer 2 used in the first arranging step (i.e., the amount of superabsorbent polymer 2 placed at the bottom) is greater than the amount of superabsorbent polymer 2 used in the second arranging step (i.e., the amount of superabsorbent polymer 2 placed at the top). By setting the amount of superabsorbent polymer 2 used in this way, even if a large amount of body fluid oozes from the discarded chickens 3, the body fluid can be reliably absorbed and retained at the bottom of the flexible container bag 1. [Example]

[0043] In order to confirm the effectiveness of the method for treating discarded chickens of the present invention, a chicken body fluid absorption confirmation test and a chicken body fluid leakage prevention confirmation test were carried out. Each test is described below.

[0044] [Chicken body fluid absorption confirmation test] This test was conducted to confirm the extent to which the superabsorbent polymer used in the method for treating discarded chickens of the present invention can absorb chicken body fluids. However, obtaining body fluids from discarded chickens is difficult and poses safety and hygiene problems. On the other hand, killing live chickens to collect body fluids may be ethically problematic from the perspective of animal welfare. Therefore, as a last resort, the inventors decided to prepare simulated chicken body fluids and use them in the test.

[0045] <Preparation of simulated body fluid> The moisture content of chickens is estimated to be 65-75% by weight, in line with that of common birds. Furthermore, the amount of blood in chickens is estimated to be 10% by weight of body weight, equivalent to that of terrestrial mammals. Based on these estimates, the weight of a chicken's body fluids was assumed to be a maximum of 70% by weight of the chicken's body weight. Furthermore, the composition of chicken body fluids was assumed to be 15% by weight of blood and 85% by weight of other body components. The simulated chicken body fluid was prepared using the following procedure. (1) Physiological saline is prepared as a component equivalent to blood (salt concentration: 0.9% by weight). (2) To prepare the non-blood equivalent, put edible chicken liver into a food processor and grind it for one minute to form a paste. (3) Physiological saline and chicken liver paste were mixed in a weight ratio of 15:85 to prepare a blood simulant.

[0046] <Absorption test of simulated body fluid> A highly absorbent polymer (trade name "SAP High Spec" manufactured by Technica Godo Co., Ltd.) containing polyacrylic acid polymer as an absorbent was added to the simulated body fluid at 1 wt%, 2 wt%, and 3 wt%. Absorption of the simulated body fluid was determined based on the fluidity of the simulated body fluid when unstirred and when stirred. That is, absorption of the simulated body fluid was determined when the simulated body fluid lost its fluidity. For comparison, commercially available sawdust (trade name "Mini Animan Comfortable Fluffy Bed" manufactured by Doggyman Hayashi Co., Ltd.) was added to the simulated body fluid at 1 wt%, 2 wt%, and 3 wt%, and absorption of the simulated body fluid was determined in the same manner as in the examples.

[0047] The results of the simulated body fluid absorption test are shown in Table 1 below.

[0048] [Table 1]

[0049] When a superabsorbent polymer was used as the absorbent, the simulated body fluid exhibited fluidity both when unstirred and when stirred when the amount of superabsorbent polymer added to the simulated body fluid was 1% by weight, but no fluidity was observed when the amount of superabsorbent polymer added was 2% or 3% by weight. When sawdust was used as the absorbent, the simulated body fluid exhibited fluidity both when unstirred and when stirred when the amount of sawdust added was 1% by weight, but no fluidity was observed when the amount of sawdust added was 2% or 3% by weight. These results indicate that the superabsorbent polymer exhibited absorbency for simulated body fluids equal to or greater than that of sawdust, which is known to have excellent absorbency. It was also found that the amount of superabsorbent polymer added to the simulated body fluid should preferably be 2% by weight or more.

[0050] [Chicken body fluid leakage prevention confirmation test] This test was conducted assuming that cull chickens were housed in a flexible container bag as a processing container, and was intended to confirm whether the cull chicken processing method of the present invention would be able to prevent leakage of body fluids exuded from cull chickens if the flexible container bag were torn by a chicken in rigor mortis. In this test, due to the difficulty in obtaining cull chickens and their body fluids, as well as ethical issues, a simulated model simulating a chicken in rigor mortis was used in addition to the simulated body fluid used in the chicken body fluid absorption confirmation test described above.

[0051] <Preparing a pseudo-model> A chicken's body has internal organs inside the skeleton, muscles outside the skeleton, and feathers covering the surface. Chicken body fluids are primarily contained in the internal organs and muscles. Therefore, unlike a water-soaked sponge, chicken body fluids are not easily released by pressure from one direction. Furthermore, once a chicken's body fluids seep out of the chicken's body, they are retained to some extent by the feathers on its surface. The inventors searched for a structure similar to the chicken's body and discovered that a paint roller can effectively replicate the chicken's body. A paint roller has bristles radially arranged on its cylindrical surface. The roller has a moderate rigidity similar to that of a chicken in rigor mortis. Furthermore, when a paint roller is immersed in water, the bristles on the roller's surface retain moisture. Furthermore, the moisture retained in the bristles on the roller's surface is not completely released by pressure from one direction. In this way, the painting roller is suitable as a model that simulates the state of rigor mortis of a discarded chicken and the state of chicken body fluids oozing out.

[0052] <Leakage test of simulated body fluids> When a typical flexible container bag is filled to the brim with discarded chicken, its weight is approximately 1,000 kg. When two flexible container bags are stacked, a load of approximately 2,000 kg is applied to the entire bottom of the lower flexible container bag. This is 0.19 kg / cm 2 Therefore, assuming these actual conditions, a leakage test of simulated body fluid was carried out using the following procedure. (1) A commercially available painting roller (product name "Melon (registered trademark)", size 4 inches (approximately 100 mm), bristle length 20 mm, weight approximately 20 g, manufactured by PIA Corporation) was soaked with 45 g of simulated body fluid to create a simulated model of a discarded chicken (simulated body fluid content: approximately 70% by weight). (2) Four discarded chicken imitation models were placed in each of two perforated polyethylene drainage bags (250 x 175 x 120 mm, 0.036 mm thick, manufactured by Konan Shoji Co., Ltd.) (total of eight bags, simulated body fluid weight: 360 g), and absorbent materials (superabsorbent polymer, sawdust) were added. The absorbent materials were placed in the designated locations (bottom of the bag, top and bottom of the bag, and the entire bag). The amount of each absorbent material added was 2% by weight of the discarded chicken imitation models. (3) Place the two draining garbage bags (see (2) above) into the sandbags. (4) Place absorbent paper on a flat surface and place a 78.5cm2 2 The tube is placed in place, and the sandbag (3) is placed inside the tube, and a 15.1 kg weight is placed (pressure: 0.19 kg / cm 2 ). (5) After 30 seconds, remove the weight and measure the weight (leakage) of the simulated body fluid absorbed by the absorbent paper. The percentage of the simulated body fluid that leaked out relative to the 360g weight of simulated body fluid contained in the simulated discarded chicken model is taken as the leakage rate (%). In addition, as a control, the leakage rate (%) of the simulated body fluid is determined in the same manner for a test specimen to which no absorbent was added.

[0053] The results of the simulated body fluid leakage test are shown in Table 2 below.

[0054] [Table 2]

[0055] The control (Test No. 6) with no absorbent added had a simulated body fluid leakage rate of 39.7%, while Tests Nos. 1 to 3, in which a water-absorbent polymer was added as an absorbent, had a low leakage rate. In particular, when the absorbent was placed in the lower part of the bag (Test No. 1) and the entire bag (Test No. 3), leakage of the simulated body fluid was completely suppressed (leakage rate of 0%). As such, absorbent polymers are excellent in both absorbing and retaining simulated body fluids, making them suitable for use in chicken waste disposal.

[0056] In contrast, in Tests 4 and 5, in which sawdust was added as an absorbent, leakage of simulated body fluid was observed, and the effect was not as good as that of absorbent polymers. In other words, although sawdust has the ability to absorb simulated body fluid, it was unable to retain the absorbed simulated body fluid when subjected to pressure and released it. Based on these results, it can be said that it is difficult to use sawdust for chicken waste disposal.

[0057] From the above results of the simulated body fluid absorption test and the simulated body fluid leakage test, it was confirmed that if the method for disposing of discarded chickens of the present invention is carried out, even if the flexible container bag is ruptured by rigor mortis of the chicken, it is possible to prevent leakage of body fluids outside the flexible container bag, and that even if pressure is applied, such as when the flexible container bags are stacked two high for transportation, there is no risk of body fluids leaking outside the flexible container bag. [Industrial Applicability]

[0058] The method for disposing of discarded chickens of the present invention is used to dispose of chickens that have been culled due to an outbreak of avian influenza, but it can also be used to dispose of chickens that have been culled for other reasons. [Explanation of symbols]

[0059] 1 Flexible container bag (treatment container) 2. Superabsorbent polymer 3. Discarded chickens

Claims

1. a first disposing step of disposing a superabsorbent polymer at the bottom of a treatment container; a step of introducing discarded chickens into the processing container; A method for disposing of discarded chickens comprising the steps of:

2. 2. The method for treating discarded chickens according to claim 1, further comprising a second placing step of placing a highly water-absorbent polymer on the discarded chickens in the treatment container.

3. a first disposing step of disposing a superabsorbent polymer at the bottom of a treatment container; a simultaneous introduction step of introducing discarded chickens and a superabsorbent polymer into the processing container at the same time; A method for disposing of discarded chickens comprising the steps of:

4. 4. The method for treating discarded chickens according to claim 3, further comprising a second placing step of placing a highly water-absorbent polymer on the discarded chickens in the treatment container.

5. 5. The method for treating discarded chickens according to claim 2 or 4, wherein the amount of superabsorbent polymer used in each placement step is set so that the amount of superabsorbent polymer used in the first placement step is greater than the amount of superabsorbent polymer used in the second placement step.

6. The method for treating discarded chickens according to any one of claims 1 to 4, wherein the total amount of the highly absorbent polymer used is 2% by weight or more based on the total weight of the discarded chickens.

7. 5. The method for treating discarded chickens according to claim 1, wherein the water absorption capacity of the highly water-absorbent polymer is 100 to 1000 times its own weight when absorbing pure water.

8. 5. The method for treating discarded chickens according to claim 1, wherein the discarded chickens are those that have been culled due to an outbreak of avian influenza.

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