Wenchang chicken compound feed containing hermetia illucens larva powder and preparation method of Wenchang chicken compound feed
By using black soldier fly larvae powder to replace soybean meal in Wenchang chicken compound feed, and combining the optimized mixing and crushing process, the problem of the immunity and feed resistance of antibiotic-free Wenchang chickens is solved, and efficient feed processing and green and healthy breeding is achieved.
Patent Information
- Application Number
- CN202510451519.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2025-06-27
AI Technical Summary
The prior art is difficult to improve the immunity of Wenchang chickens and the anti-mold ability of feed without the addition of antibiotics, while avoiding the problem of polymerizing the sticky screen in the mixing and crushing of high-greased raw materials.
Black soldier flies larvae powder is used to replace some soybean meal, and combine corn, secondary powder, general bran and dried black soldier flies larvae raw materials for mixing and crushing to prepare a Wenchang chicken compound feed containing black soldier flies larvae powder, and avoid the stickiness of high-greased raw materials through optimized processes.
It effectively improves the anti-mold ability of feed, reduces the residual harm of antibiotics, enhances the immunity of Wenchang chickens, broadens the path of green and healthy breeding, and improves the efficiency of feed processing.
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Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of feeds, and particularly relates to a formulated feed for Wenchang chickens containing black soldier fly larvae powder and a preparation method thereof. Background Art
[0002] Wenchang chickens originated in Hainan and are deeply loved by diners in South China for their delicious meat and juicy cooking. To meet the increasing demand for poultry meat products, the scattered farming mode of farmers has gradually changed to an intensive factory farming mode. Feeding formulated feeds can increase production and speed up growth. The livestock, poultry, and aquatic feed industries are actively searching for and developing protein feed resources that can replace soybean meal for feed use. In addition, to avoid the risk caused by the accumulation of residual antibiotics in poultry meat products to humans, the prohibition of antibiotics in feeds is also a major trend in the domestic breeding industry. However, the lack of antibiotic addition will, to a certain extent, reduce the disease resistance of farmed animals and affect the breeding efficiency.
[0003] Therefore, to maintain the balance between food safety and breeding production capacity, it is urgent to develop a new type of formulated feed for Wenchang chickens with no antibiotic addition and capable of enhancing the body's immunity. Summary of the Invention
[0004] Aiming at the problems existing in the prior art, the present invention provides a formulated feed for Wenchang chickens containing black soldier fly larvae powder and a preparation method thereof, which has the advantages of improving the anti-mildew ability of the feed, reducing the harm of antibiotic residues, enhancing the immunity of the fed chickens, broadening the path of green and healthy breeding in terms of feed quality, and effectively avoiding the situation that high-fat raw materials are prone to polymerization and sticking to the sieve mesh during the mixing and grinding process in the feed preparation process, ensuring a high feed processing rate, and solving the problem in the prior art that it is urgent to develop a new type of formulated feed for Wenchang chickens with no antibiotic addition and capable of enhancing the body's immunity to maintain the balance between food safety and breeding production capacity.
[0005] The present invention is realized as follows: A formulated feed for Wenchang chickens containing black soldier fly larvae powder includes a mixed component material of black soldier fly larvae powder, soybean meal, rice bran meal, soybean oil, stone powder, monocalcium phosphate, DL-methionine, antioxidant, and compound premix; The feed formula consists of the following raw materials in parts by weight: 747 - 923 parts by weight of the mixed component material of black soldier fly larvae powder, 60 - 180 parts by weight of soybean meal, 0 - 20 parts by weight of rice bran meal, 60 - 180 parts by weight of soybean oil, 2 - 8 parts by weight of stone powder, 8 - 12 parts by weight of monocalcium phosphate, 0 - 5 parts by weight of DL-methionine, 0.1 - 0.6 parts by weight of antioxidant, and 1.0 - 2.0 parts by weight of compound premix.
[0006] With this setting, the formulated feed is fed to Wenchang chickens at the age of 30 - 90 days; Hermetia illucens larvae have great potential in replacing soybean meal due to their high nutritional value (36 - 45% crude protein, 32 - 48% crude fat, rich ω-6 polyunsaturated fatty acids, and chitin). At the same time, the lauric acid and antibacterial peptides rich in Hermetia illucens larvae can improve the immunity of Wenchang chickens to a certain extent. The compound feed for Wenchang chickens prepared by replacing part of the soybean meal with Hermetia illucens larvae powder effectively reduces the harm of antibiotic residues and improves the immunity of the fed chickens.
[0007] Preferably in the present invention, the mixed component material of Hermetia illucens larvae powder includes 540 - 560 parts by weight of corn, 70 - 210 parts by weight of dried Hermetia illucens larvae raw material, 100 - 130 parts by weight of wheat middlings, and 23 - 37 parts by weight of rice bran.
[0008] With this setting, it is convenient to prepare the mixed component material of Hermetia illucens larvae powder, facilitating the mixing of low-oil-content corn, wheat middlings, and rice bran with the dried Hermetia illucens larvae raw material, which is beneficial to the crushing and processing of the dried Hermetia illucens larvae raw material.
[0009] Preferably in the present invention, the compound premix includes 0.4 - 0.6 parts by weight of thiamine, 0.9 - 1.1 parts by weight of riboflavin, 4 - 6 parts by weight of vitamin A, 0.9 - 1.1 parts by weight of vitamin D3, 3.5 - 4.5 parts by weight of vitamin E, 0.09 - 0.11 parts by weight of menadione, 0.9 - 1.1 parts by weight of pyridoxine, 0.009 - 0.011 parts by weight of biotin, 0.001 - 0.003 parts by weight of cyanocobalamin, 1.5 - 2.5 parts by weight of calcium pantothenate, 0.09 - 0.11 parts by weight of folic acid, 3.5 - 4.5 parts by weight of nicotinic acid, 14 - 15 parts by weight of vitamin C, 9 - 11 parts by weight of ferrous sulfate, 0.07 - 0.09 parts by weight of potassium iodide, 0.2 - 0.4 parts by weight of copper sulfate, 4.5 - 5.5 parts by weight of zinc sulfate, 1.1 - 1.3 parts by weight of manganese sulfate, 0.2 - 0.4 parts by weight of sodium selenite, 0.01 - 0.03 parts by weight of cobalt sulfate, and 0.35 - 0.40 parts by weight of microcrystalline cellulose.
[0010] With this setting, it is convenient to prepare the compound premix.
[0011] Preferably in the present invention, the dried Hermetia illucens larvae raw material is made by drying Hermetia illucens larvae raised to 13 - 16 days old using a low-temperature drying process at a temperature of 65 - 80°C for 3 - 4 hours.
[0012] A preparation method of a compound feed for Wenchang chickens containing Hermetia illucens larvae powder, applicable to the compound feed for Wenchang chickens containing Hermetia illucens larvae powder, includes the following steps: S1. Put the mixed component material of black soldier fly larvae powder into a mixer for mixing. After mixing, transfer it to a crusher for crushing until it can pass through a 40-mesh sieve. Then place the crushed mixed component material of black soldier fly larvae powder in a dry place at room temperature for standby. S2. Put soybean meal and rice bran meal into a crusher respectively for crushing until both can pass through a 40-mesh sieve. Then put the crushed soybean meal and rice bran meal into a mixer for mixing, and the mixing and stirring time is 5 - 6 min to obtain component A, and place it for standby. S3. Put stone powder, calcium hydrogen phosphate, DL-methionine, antioxidant and compound premix into a mixer for mixing, and mix and stir for 2 - 3 min to obtain component B, and place it for standby. S4. Put component A in step S2 and component B in step S3 into a mixer for mixing, and the mixing and stirring time is 3 - 5 min to obtain component C. S5. Put component C in step S4 and the mixed component material of black soldier fly larvae powder in step S1 into a mixer for mixing, and the mixing and stirring time is 5 - 6 min. Then add soybean oil for mixing, and the mixing and stirring time is 5 - 6 min. Then put it into a feed granulator for extrusion granulation to obtain granular materials. S6. Dry the obtained feed granular materials. The temperature of the dryer is 80 °C and the time is 1 min. After high-temperature drying, enter the cooling chamber for cooling to obtain the finished feed, and the preparation is completed.
[0013] With this setting, the dried raw material of black soldier fly larvae and low-oil-content feed raw materials (corn, wheat middlings and rice bran) are mixed and crushed simultaneously, which not only solves the problem that the dried raw material of black soldier fly larvae exudes oil and is easy to polymerize and stick to the crusher sieve, ensures a high feed processing rate, but also eliminates the step of pre-defatting the dried raw material of black soldier fly larvae, efficiently utilizes the oil of the dried raw material of black soldier fly larvae for feed, effectively avoids the situation that high-oil raw materials are easy to polymerize and stick to the sieve during the mixing and crushing process, improves the processing efficiency, reduces the loss of feed during the processing process, improves the anti-mildew ability of the feed in terms of feed quality, reduces the harm of antibiotic residues, improves the immunity of the chickens raised, and broadens the road of green and healthy breeding.
[0014] Preferably in the present invention, the crusher used is a hammer mill, and the mixer used is a vertical double - helix mixer.
[0015] With this setting, it is convenient to carry out sufficient crushing and improve the crushing efficiency.
[0016] Preferably in the present invention, the feed granulator used is a ring die granulator, the die holes of the ring die granulator are 3 - 5 mm, and the compression ratio is 1:9.
[0017] With this setting, it is convenient to manufacture feed pellets.
[0018] Preferably in the present invention, the dryer used is a pneumatic steam dryer.
[0019] With this setting, it is convenient to dry the compound feed.
[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The compound feed for Wenchang chickens prepared by using black soldier fly larvae powder to replace part of the soybean meal has improved feed anti-mildew ability, reduced the harm of antibiotic residues, and enhanced the immunity of the chickens raised in terms of feed quality, thus broadening the path of green and healthy breeding. In terms of feed processing, the mixing and pulverizing process of the dried black soldier fly larvae raw materials is optimized, effectively avoiding the situation that high-fat raw materials are prone to polymerization and sticking to the sieve mesh during the mixing and pulverizing process, eliminating the step of pre-defatting the dried black soldier fly larvae raw materials, ensuring a high feed processing rate, efficiently utilizing the oil in the dried black soldier fly larvae raw materials for feed, improving the processing efficiency, and reducing the loss of feed during the processing process. Description of the Drawings
[0021] Figure 1 For the mildew situation of the feed prepared in Example 1 after 3 months; Figure 2 For the mildew situation of the feed prepared in Example 1 after 6 months; Figure 3 For the mildew situation of the feed produced in the comparative example after 3 months; Figure 4 For the mildew situation of the feed produced in the comparative example after 6 months; Detailed Embodiments
[0022] To further understand the content, features and effects of the present invention, the following examples are given and described in detail in conjunction with the drawings.
[0023] The present invention will be described in detail below.
[0024] Example 1 A compound feed for Wenchang chickens containing black soldier fly larvae powder provided by an embodiment of the present invention includes a black soldier fly larvae powder mixed component material, soybean meal, rice bran meal, soybean oil, stone powder, calcium hydrogen phosphate, DL-methionine, antioxidant and compound premix; The feed formula is composed of the following raw materials in parts by weight: 747 parts of black soldier fly larvae powder mixed component material, 180 parts by weight of soybean meal, 20 parts by weight of rice bran meal, 30 parts by weight of soybean oil, 8 parts by weight of stone powder, 10 parts by weight of calcium hydrogen phosphate, 2 parts by weight of DL-methionine, 0.4 part by weight of antioxidant, and 1.3 parts by weight of compound premix.
[0025] Using the above - mentioned scheme, black soldier fly larvae have great potential in replacing soybean meal due to their high nutritional value (36 - 45% crude protein, 32 - 48% crude fat, rich ω - 6 polyunsaturated fatty acids and chitin). At the same time, the lauric acid and antibacterial peptides rich in black soldier fly larvae can improve the immunity of Wenchang chickens to a certain extent. The compound feed for Wenchang chickens prepared by replacing part of the soybean meal with black soldier fly larvae powder effectively reduces the harm of antibiotic residues and improves the immunity of the fed chickens.
[0026] Specifically, the mixed component material of black soldier fly larvae powder includes 540 parts by weight of corn, 70 parts by weight of dry raw materials of black soldier fly larvae, 100 parts by weight of wheat middlings, and 37 parts by weight of rice bran.
[0027] Using the above - mentioned scheme, it is convenient to prepare the mixed component material of black soldier fly larvae powder, which is convenient for mixing low - oil - content corn, wheat middlings, rice bran with the dry raw materials of black soldier fly larvae, and is beneficial to the crushing process of the dry raw materials of black soldier fly larvae.
[0028] Specifically, the compound premix includes 0.5 part by weight of thiamine, 1 part by weight of riboflavin, 5 parts by weight of vitamin A, 1 part by weight of vitamin D3, 4 parts by weight of vitamin E, 0.1 part by weight of menadione, 1 part by weight of pyridoxine, 0.01 part by weight of biotin, 0.002 part by weight of cyanocobalamin, 2 parts by weight of calcium pantothenate, 0.1 part by weight of folic acid, 4 parts by weight of nicotinic acid, 14.38 parts by weight of vitamin C, 10 parts by weight of ferrous sulfate, 0.08 part by weight of potassium iodide, 0.3 part by weight of copper sulfate, 5 parts by weight of zinc sulfate, 1.2 parts by weight of manganese sulfate, 0.3 part by weight of sodium selenite, 0.02 part by weight of cobalt sulfate, and 0.388 part by weight of microcrystalline cellulose.
[0029] Using the above - mentioned scheme, it is convenient to prepare the compound premix.
[0030] Specifically, the dry raw materials of black soldier fly larvae are made by drying black soldier fly larvae raised to 13 - 16 days old using a low - temperature drying process at a temperature of 65 - 80 °C for 3 - 4 h.
[0031] A preparation method of a compound feed for Wenchang chickens containing black soldier fly larvae powder, applicable to the compound feed for Wenchang chickens containing black soldier fly larvae powder, includes the following steps: S1. Put the mixed component material of black soldier fly larvae powder into a mixer for mixing. After mixing, transfer it to a crusher for crushing until it can pass through a 40 - mesh sieve, and then place the crushed mixed component material of black soldier fly larvae powder in a dry place at room temperature for standby; S2. Put soybean meal and rice bran meal into a crusher for crushing until they can both pass through a 40 - mesh sieve, and put the crushed soybean meal and rice bran meal into a mixer for mixing. The mixing and stirring time is 5 - 6 min to obtain component A, and place it for standby; S3. Put stone powder, dicalcium phosphate, DL-methionine, antioxidant and compound premix into a mixer for mixing, and mix and stir for 2 - 3 min to obtain Component B, and set it aside for later use; S4. Put Component A in Step S2 and Component B in Step S3 into a mixer for mixing, and the mixing and stirring time is 3 - 5 min to obtain Component C; S5. Put Component C in Step S4 and the mixed component material of black soldier fly larvae powder in Step S1 into a mixer for mixing, and the mixing and stirring time is 5 - 6 min. Then add soybean oil for mixing, and the mixing and stirring time is 5 - 6 min. Then put it into a feed granulator for extrusion granulation to obtain granular materials; S6. Dry the obtained feed granular materials. The temperature of the dryer is 80 °C and the time is 1 min. After high-temperature drying, enter the cooling chamber for cooling to obtain the finished feed, and the preparation is completed.
[0032] Adopting the above scheme, by mixing and simultaneously pulverizing the dry raw material of black soldier fly larvae with low oil content feed raw materials (corn, wheat middlings and rice bran), it not only solves the problem that the exuded oil of the dry raw material of black soldier fly larvae is easy to polymerize and stick to the sieve mesh of the pulverizer, ensures a high feed processing rate, but also eliminates the step of pre-defatting the dry raw material of black soldier fly larvae, and efficiently utilizes the oil of the dry raw material of black soldier fly larvae for feed; Effectively avoids the situation that high oil content raw materials are easy to polymerize and stick to the sieve mesh during the mixing and pulverizing process, improves the processing efficiency, reduces the loss of feed during the processing process, improves the anti-mildew ability of feed in terms of feed quality, reduces the harm of antibiotic residues, improves the immunity of the raised chickens, and broadens the road of green and healthy breeding.
[0033] Specifically, the pulverizer used is a hammer mill, and the mixer used is a vertical double - helix mixer.
[0034] Adopting the above scheme is convenient for sufficient pulverization and improves the pulverization efficiency.
[0035] Specifically, the feed granulator used is a ring die granulator, and the die holes of the ring die granulator are 3 - 5 mm and the compression ratio is 1:9.
[0036] Adopting the above scheme is convenient for manufacturing feed pellets.
[0037] Specifically, the dryer used is a pneumatic steam dryer.
[0038] Adopting the above scheme is convenient for drying the formulated feed.
[0039] Example 2 A formulated feed for Wenchang chickens containing black soldier fly larvae powder provided by an embodiment of the present invention comprises a mixed component material of black soldier fly larvae powder, soybean meal, rice bran meal, soybean oil, stone powder, calcium hydrogen phosphate, DL-methionine, an antioxidant, and a compound premix; The feed formula is composed of the following raw materials in parts by weight: 835 parts by weight of the mixed component material of black soldier fly larvae powder, 120 parts by weight of soybean meal, 10 parts by weight of rice bran meal, 15 parts by weight of soybean oil, 5 parts by weight of stone powder, 10 parts by weight of calcium hydrogen phosphate, 2 parts by weight of DL-methionine, 0.4 part by weight of the antioxidant, and 1.3 parts by weight of the compound premix.
[0040] Specifically, the mixed component material of black soldier fly larvae powder comprises 550 parts by weight of corn, 140 parts by weight of dried black soldier fly larvae raw materials, 120 parts by weight of wheat middlings, and 25 parts by weight of rice bran.
[0041] Specifically, the compound premix comprises 0.5 part by weight of thiamine, 1 part by weight of riboflavin, 5 parts by weight of vitamin A, 1 part by weight of vitamin D3, 4 parts by weight of vitamin E, 0.1 part by weight of menadione, 1 part by weight of pyridoxine, 0.01 part by weight of biotin, 0.002 part by weight of cyanocobalamin, 2 parts by weight of calcium pantothenate, 0.1 part by weight of folic acid, 4 parts by weight of nicotinic acid, 14.38 parts by weight of vitamin C, 10 parts by weight of ferrous sulfate, 0.08 part by weight of potassium iodide, 0.3 part by weight of copper sulfate, 5 parts by weight of zinc sulfate, 1.2 parts by weight of manganese sulfate, 0.3 part by weight of sodium selenite, 0.02 part by weight of cobalt sulfate; 0.388 part by weight of microcrystalline cellulose.
[0042] Specifically, the dried black soldier fly larvae raw materials are made by drying black soldier fly larvae raised to 13 - 16 days old using a low-temperature drying process at a temperature of 65 - 80 °C for 3 - 4 h.
[0043] The preparation method is the same as that in Example 1.
[0044] Example 3 A formulated feed for Wenchang chickens containing black soldier fly larvae powder provided by an embodiment of the present invention comprises a mixed component material of black soldier fly larvae powder, soybean meal, rice bran meal, soybean oil, stone powder, calcium hydrogen phosphate, DL-methionine, an antioxidant, and a compound premix; The feed formula is composed of the following raw materials in parts by weight: 923 parts by weight of the mixed component material of black soldier fly larvae powder, 60 parts by weight of soybean meal, 0 parts by weight of rice bran meal, 0 parts by weight of soybean oil, 2 parts by weight of stone powder, 10 parts by weight of calcium hydrogen phosphate, 2 parts by weight of DL-methionine, 0.4 part by weight of the antioxidant, and 1.3 parts by weight of the compound premix.
[0045] Specifically, the black soldier fly larva powder mixed component material includes 550 parts by weight of corn, 140 parts by weight of dried black soldier fly larva raw material, 120 parts by weight of wheat middlings, and 25 parts by weight of rice bran.
[0046] Specifically, the compound premix includes 0.5 part by weight of thiamine, 1 part by weight of riboflavin, 5 parts by weight of vitamin A, 1 part by weight of vitamin D3, 4 parts by weight of vitamin E, 0.1 part by weight of menadione, 1 part by weight of pyridoxine, 0.01 part by weight of biotin, 0.002 part by weight of cyanocobalamin, 2 parts by weight of calcium pantothenate, 0.1 part by weight of folic acid, 4 parts by weight of nicotinic acid, 14.38 parts by weight of vitamin C, 10 parts by weight of ferrous sulfate, 0.08 part by weight of potassium iodide, 0.3 part by weight of copper sulfate, 5 parts by weight of zinc sulfate, 1.2 parts by weight of manganese sulfate, 0.3 part by weight of sodium selenite, 0.02 part by weight of cobalt sulfate; 0.388 part by weight of microcrystalline cellulose.
[0047] Specifically, the dried black soldier fly larva raw material is made by drying black soldier fly larvae raised to 13 - 16 days old using a low - temperature drying process at a temperature of 65 - 80°C for 3 - 4 hours.
[0048] The preparation method is the same as that in Example 1.
[0049] The formulated feed of Example 1 was compared with the existing common feed containing 20 - 30% soybean meal and no black soldier fly larva powder. The existing common feed on the market without black soldier fly larva powder was used as the control group. After the feed preparation or production was completed, they were uniformly placed in a ventilated, cool room at a room temperature of about 22 - 28°C and a humidity of about 60 - 70%. The mildew situation of the feed was observed 3 months and 6 months after the feed preparation or production was completed, and the anti - mildew ability of the feed was analyzed. It was found that a few mold clusters appeared in the feed of Example 1 6 months after preparation, and there was no obvious peculiar smell; in the control group feed, feed particles were oxidized and moldy 6 months after production, and there was an obvious musty smell. Based on the above data, it shows that the formulated feed containing black soldier fly larva powder has better anti - mildew ability than the common formulated feed without black soldier fly larva powder.
[0050] Table 1 Feed mildew situation Test Example 2: The formulated feeds prepared in Examples 1-3 were compared with the existing ordinary feeds containing 20-30% soybean meal and no black soldier fly larvae powder. The ordinary feeds on the existing market without black soldier fly larvae powder were used as the control group. Feeding experiments were carried out on Wenchang chickens aged 30-90 days. 600 Wenchang chickens with healthy bodies and uniform physique were randomly and evenly assigned to 4 groups, with 5 breeding enclosures set in each group, and 30 chickens were placed in each enclosure. The floor area of each enclosure was 2m * 3m * 2m. The experiment lasted for 60 days. Full feeding was carried out at 8:00 and 15:00 every day. Samples were taken for the detection of growth performance and serum biochemical indexes to analyze the feeding effects of the formulated feeds for Wenchang chickens prepared in Examples 1-3. The specific data are shown in Table 2 and Table 3.
[0051] Table 2 Growth performance of Wenchang chickens fed with feeds of each group Note: Different letters in the superscript of the data indicate significant differences between groups (P < 0.05), and the same letters or no marks indicate no significant differences between groups (P ≥ 0.05).
[0052] As can be seen from Table 2, the weight gain rate of Wenchang chickens fed with the feed of Example 2 was significantly higher than that of Wenchang chickens fed with the control group feed (P < 0.05), while the feed-to-meat ratio and mortality rate of Wenchang chickens fed with the feeds of the 3 examples were significantly lower than those of Wenchang chickens fed with the control group feed (P < 0.05). This indicates that replacing soybean meal in feed with black soldier fly larvae powder will not reduce the growth rate of Wenchang chickens; the lower feed-to-meat ratio indicates that when feeding Wenchang chickens to the same meat yield rate, the feeds consumed by the 3 examples are significantly less than those consumed by the control group, which indicates that the feed prepared by this invention can reduce the breeding cost; moreover, the feeds of the 3 examples can improve the immunity of Wenchang chickens.
[0053] Table 3 Serum biochemical indexes of Wenchang chickens fed with feeds of each group The albumin content in chicken serum is one of the evaluation indexes of the body's immunity. As can be seen from Table 3, the serum albumin levels of Wenchang chickens fed with the feeds of Example 2 and Example 3 were significantly higher than those of Wenchang chickens fed with the control group feed (P < 0.05), indicating that the feed of Example 2 can improve the body's immunity of Wenchang chickens; the alanine aminotransferase level in the serum of the chickens in Example 1 was significantly lower than that of the chickens in the control group (P < 0.05), indicating that the liver of the chickens fed with the control group feed was more severely damaged by oxidative stress than that of the chickens in Example 1; the high-density lipoprotein in the serum of the chickens in the 3 examples was significantly higher than that of the chickens in the control group (P < 0.05), indicating that replacing soybean meal in feed with black soldier fly larvae powder has a lower potential risk of causing hyperlipidemia in Wenchang chickens.
[0054] Based on the growth performance and serum biochemical indexes of Wenchang chickens fed in the three examples, the weight gain rate of Wenchang chickens fed with the compound feed prepared in the present invention can reach that of chickens fed with ordinary feed containing 24% soybean meal. The lower feed-to-meat ratio indicates a significant effect on saving feed costs. In addition, the lower mortality and culling rate and serum biochemical indexes also indicate that replacing soybean meal in feed with black soldier fly larvae powder has a good promoting effect on the green and healthy breeding of Wenchang chickens and has very good production guiding value.
[0055] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.
[0056] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A compound feed for Wenchang chicken containing black soldier fly larvae powder, characterized in that: It includes black soldier fly larvae powder mixed component feed, soybean meal, rice bran meal, soybean oil, stone powder, calcium hydrogen phosphate, DL-methionine, antioxidant and composite premix; The feed formula is composed of the following raw materials in parts by weight: 747-923 parts by weight of black soldier fly larvae powder mixed component material, 60-180 parts by weight of soybean meal, 0-20 parts by weight of rice bran meal, 60-180 parts by weight of soybean oil, 2-8 parts by weight of stone powder, 8-12 parts by weight of calcium hydrogen phosphate, 0-5 parts by weight of DL-methionine, 0.1-0.6 parts by weight of antioxidant, and 1.0-2.0 parts by weight of composite premix.
2. The compound feed for Wenchang chicken containing black soldier fly larvae powder as claimed in claim 1, characterized in that: The black soldier fly larvae powder mixed component materials include 540-560 parts by weight of corn, 70-210 parts by weight of black soldier fly larvae dry raw materials, 100-130 parts by weight of inferior flour, and 23-37 parts by weight of bran.
3. The compound feed for Wenchang chicken containing black soldier fly larvae powder according to claim 1, characterized in that: The composite premix comprises 0.4-0.6 parts by weight of thiamine, 0.9-1.1 parts by weight of riboflavin, 4-6 parts by weight of vitamin A, 0.9-1.1 parts by weight of vitamin D3, 3.5-4.5 parts by weight of vitamin E, 0.09-0.11 parts by weight of menadione, 0.9-1.1 parts by weight of pyridoxine, 0.009-0.011 parts by weight of biotin, 0.001-0.003 parts by weight of cyanocobalamin, 1.5-2.5 parts by weight of calcium pantothenate, 0.09-0.11 parts by weight of folic acid, 3.5-4.5 parts by weight of niacin, and 0.05-0.10 parts by weight of vitamin C. 14-15 weight parts, 9-11 weight parts of iron sulfate, 0.07-0.09 weight parts of potassium iodide, 0.2-0.4 weight parts of copper sulfate, 4.5-5.5 weight parts of zinc sulfate, 1.1-1.3 weight parts of manganese sulfate, 0.2-0.4 weight parts of sodium selenite, 0.01-0.03 weight parts of cobalt sulfate, and 0.35-0.40 weight parts of microcrystalline cellulose.
4. The compound feed for Wenchang chicken containing black soldier fly larvae powder as claimed in claim 2, characterized in that: The black soldier fly larvae dry raw material is prepared by drying the black soldier fly larvae raised to 13-16 days old by a low-temperature drying process at a temperature of 65-80° C. for 3-4 hours.
5. A method for preparing a Wenchang chicken compound feed containing black soldier fly larvae powder, characterized in that: The Wenchang chicken compound feed containing black soldier fly larvae powder according to any one of claims 1 to 4 comprises the following steps: S1, putting the black soldier fly larvae powder mixed component material into a mixer for mixing, transferring it into a grinder for crushing after the mixing is completed, until it can pass through a 40-mesh sieve, and then placing the crushed black soldier fly larvae powder mixed component material in a dry place at room temperature for standby use; S2, the soybean meal and the rice bran meal are respectively put into a pulverizer for pulverization, until both can pass through a 40-mesh sieve, and then the pulverized soybean meal and the rice bran meal are put into a mixer for mixing, and the mixing and stirring time is 5-6min to obtain component A, which is placed for standby use; S3, putting stone powder, calcium hydrogen phosphate, DL-methionine, antioxidant and composite premix into a mixer for mixing, and mixing and stirring for 2-3 minutes to obtain component B, which is set aside for later use; S4, putting component A in step S2 and component B in step S3 into a mixer for mixing, the mixing time is 3-5 minutes, and component C is obtained; S5, putting component C in step S4 and the black soldier fly larvae powder mixed component material in step S1 into a mixer for mixing, the mixing and stirring time is 5-6 minutes, then adding soybean oil for mixing, the mixing and stirring time is 5-6 minutes, and then putting into a feed granulator for extrusion granulation to obtain a granular material; S6. Dry the obtained feed pellets at a temperature of 80°C for 1 minute in a dryer. After high-temperature drying, place the pellets in a cooling chamber for cooling to obtain a finished feed. The preparation is complete.
6. The method for preparing a Wenchang chicken compound feed containing black soldier fly larvae powder as claimed in claim 5, characterized in that: The pulverizer is a hammer pulverizer, and the mixer is a vertical double-screw mixer.
7. The method for preparing a compound feed for Wenchang chicken containing black soldier fly larvae powder according to claim 5, characterized in that: The feed pelletizer adopts a ring die pelletizer, the die hole of the ring die pelletizer is 3-5mm, and the compression ratio is 1:
9.
8. The method for preparing a Wenchang chicken compound feed containing black soldier fly larvae powder as claimed in claim 5, characterized in that: The dryer used is an air flow steam dryer.