Crocodile feed, crocodile feeding method and application

Abstract

The application provides alligator feed, an alligator feeding method and application, and relates to the technical field of alligator breeding. The alligator feed with high meat yield rate comprises fish, fish meal, vitamins, calcium powder, medicinal materials and probiotics; the fish meal comprises fish, shrimps and land animal meat; and the medicinal materials comprise at least one of malt, houttuynia cordata and hawthorn. Through the alligator feeding method, the alligator feed is fed, the meat yield rate, the egg production rate of alligators, and the fertilization rate and the hatching rate of alligator eggs are improved, the alligator feeding system has high economic benefits, and the preparation method of the alligator feed is simple and efficient.

Description

Crocodile feed, crocodile breeding methods and applications Technical Field

[0001] This invention provides crocodile feed, crocodile breeding methods and applications, relating to the field of crocodile farming technology, specifically relating to a crocodile feed with high meat yield, feed for female crocodiles during the breeding season, feed for female crocodiles for at least 1-3 months after laying eggs, feed for male crocodiles for at least 1 month before mating, and crocodile breeding methods and applications. Background Technology

[0002] Crocodiles possess extremely high economic, social, and biological value. Artificial crocodile farming requires meeting their physiological and ecological needs, simulating their natural environment, and constructing breeding and rearing enclosures where they can complete activities such as foraging, growth, mating, egg laying, hatching, and hibernation within a small area. Current crocodile husbandry and artificial breeding practices suffer from poor meat yield, egg production rate, and egg fertilization and hatching rates.

[0003] Chinese patent CN113749043A discloses an integrated ecological crocodile farming system, comprising a crocodile farming area, a forage fish farming area, and a planting area arranged sequentially. The crocodile farming area includes an open-air fishpond, a wintering greenhouse located next to the open-air fishpond, and a feeding area. The open-air fishpond is equipped with a natural spring water supply system. The exterior of the wintering greenhouse is covered with a transparent, heat-insulating, and moisture-retaining plastic film. The feeding area is located adjacent to the forage fish farming area. The forage fish farming area raises mixed fish used to feed the crocodiles. Fish farming; the planting area is used to recycle and reuse the organic fertilizer from the crocodile farming area and the feed fish farming area. Based on the concept of environmentally friendly and ecological farming, it combines ecological farming methods to form an ecological cycle farming system with crocodiles as the main body, forming an ecological cycle farming system circle to ensure the growth environment of crocodiles, thereby ensuring the quality of crocodile meat. The feed used is: 60-80 parts fish meal, 10-20 parts starch, 5-10 parts yam, 5-10 parts Bupleurum, 3-5 parts hawthorn, 3-8 parts protein powder, 2-5 parts vitamin C, and 20-40 parts water. When feeding crocodiles with this feed, the sex of the crocodiles is not distinguished, which leads to a decrease in the egg production rate, fertilization rate and hatching rate of crocodile eggs during reproduction.

[0004] Chinese patent CN107296012A discloses a method for crocodile farming, including: (1) feeding management: selecting different feeding densities and feeds according to different growth stages; (2) light control; (3) hatching management; (4) temperature and humidity control; and (5) environmental hygiene management. This method employs feed management, using appropriate feeds and feeding densities for crocodiles at different growth stages to promote crocodile growth and improve their survival rate; controlling the temperature, humidity, and light in the rearing pond to improve the survival rate and egg production rate; and controlling the temperature and humidity in the hatching room and sterilizing the eggs to improve the hatching rate of crocodile embryos. While this method uses appropriate feeds and feeding densities for crocodiles at different growth stages, it does not adjust the feed according to different sexes, leaving room for improvement in the egg production rate of the crocodiles.

[0005] In his article "Crocodile Farming and Feed" (Feed Industry, Vol. 19, No. 2, 1998), Guo Shidong disclosed that in the early stages of crocodile farming, fresh fish, coypu, and chicken were the main feed for crocodiles. These items were ground into minced meat and fed to young crocodiles, while later-aged crocodiles were fed whole fish or meat strips. Fish meal, chicken meal, and meat and bone meal were the main protein sources in crocodile formulated feed, and a few crocodile farms also used soybean protein. Chicken oil and fish oil were the main fat sources. Soybean oil, sunflower oil, and other vegetable oils were also used in the formulated feed for young crocodiles. However, the feed was not adjusted according to the sex of the crocodiles, which led to a decrease in egg production. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides crocodile feed, crocodile rearing methods, and applications. By using the crocodile rearing method of this invention and feeding the crocodile feed of this invention, the meat yield, egg production rate, fertilization rate, and hatching rate of crocodile eggs are improved. At the same time, the crocodile rearing system of this invention has high economic benefits, and the preparation method of crocodile feed is simple and efficient.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] In a first aspect, the present invention provides a crocodile feed with a high meat yield, comprising fish, fish meal, vitamins, calcium powder, medicinal materials and probiotics; wherein the fish meal comprises fish, shrimp and terrestrial animal meat; and wherein the medicinal materials comprise at least one of malt, houttuynia cordata and hawthorn.

[0009] Furthermore, the crocodile feed, by weight, comprises 20-80 parts fish, 20-80 parts fishmeal, 3-8 parts vitamins, 5-15 parts calcium powder, 6-16 parts medicinal herbs, and 5-10 parts probiotics.

[0010] Furthermore, the fishmeal comprises fish, shrimp, and terrestrial animal meat in a mass ratio of (4-12):(4-8):(12-20).

[0011] Preferably, the fish meal comprises fish, shrimp and terrestrial animal meat in a mass ratio of (8-12):(6-8):(16-20).

[0012] More preferably, the fishmeal comprises fish, shrimp and terrestrial animal meat in a mass ratio of (8-10):(6-7):(16-18).

[0013] Furthermore, the crocodile includes Siamese crocodiles and saltwater crocodiles; when the crocodile is a Siamese crocodile, the medicinal material is houttuynia cordata and malt; when the crocodile is a saltwater crocodile, the medicinal material is houttuynia cordata and hawthorn.

[0014] Furthermore, when the crocodile is a Siamese crocodile, the crocodile feed includes 60-80 parts fish, 20-40 parts fishmeal, 3-8 parts vitamins, 10-15 parts calcium powder, 3-8 parts houttuynia cordata, 3-8 parts malt, and 5-10 parts probiotics; when the crocodile is a saltwater crocodile, the crocodile feed includes 20-30 parts fish, 40-80 parts fishmeal, 3-8 parts vitamins, 5-10 parts calcium powder, 3-8 parts houttuynia cordata, 3-8 parts hawthorn, and 5-10 parts probiotics.

[0015] Preferably, when the crocodile is a Siamese crocodile, the crocodile feed includes 70-80 parts fish, 30-40 parts fish meal, 3-5 parts vitamins, 12-15 parts calcium powder, 3-5 parts houttuynia cordata, 5-8 parts malt and 6-9 parts probiotics.

[0016] Preferably, when the crocodile is a saltwater crocodile, the crocodile feed includes 25-30 parts fish, 40-60 parts fishmeal, 5-8 parts vitamins, 8-10 parts calcium powder, 5-8 parts houttuynia cordata, 5-8 parts hawthorn and 6-9 parts probiotics.

[0017] Furthermore, the fish species include silver carp, bighead carp, grass carp, blunt snout bream, black carp, mud carp, common carp, crucian carp, eel, and tilapia.

[0018] Furthermore, the terrestrial animal meat includes at least one of chicken, duck, goose, beef, mutton, horse, donkey, and pork.

[0019] Furthermore, the vitamins include vitamin A, vitamin B, vitamin D, and vitamin E; the calcium powder includes at least one of calcium carbonate, calcium lactate, calcium gluconate, calcium citrate, and bone meal.

[0020] Furthermore, the probiotics include Lactobacillus plantarum, Bifidobacterium and Lactobacillus acidophilus in a mass ratio of (1-3):(2-5):(3-7).

[0021] Preferably, the probiotics include Lactobacillus plantarum, Bifidobacterium and Lactobacillus acidophilus in a mass ratio of (1-3):2:(3-5).

[0022] Secondly, the present invention provides a breeding female crocodile feed, comprising the above-mentioned crocodile feed and additive 1; the breeding period is from 2-3 months before the female crocodile mates until the female crocodile lays eggs; the additive 1 comprises animal offal, insect powder, calcium powder and angelica.

[0023] Furthermore, the additive 1 includes 5-10 parts animal offal, 5-10 parts insect powder, 5-15 parts calcium powder, and 3-8 parts angelica.

[0024] Thirdly, the present invention provides a feed for female crocodiles 1-3 months after laying eggs, comprising the above-mentioned crocodile feed and additive 2; the additive 2 includes animal offal, insect powder, calcium powder, honeysuckle and vitamins.

[0025] Furthermore, the additive 2 includes 5-10 parts animal offal, 5-10 parts insect powder, 5-15 parts calcium powder, 3-8 parts honeysuckle, and 5-10 parts vitamins.

[0026] Fourthly, the present invention provides a male crocodile feed for one month prior to mating, comprising the aforementioned crocodile feed and additive 3; the additive 3 comprises insect powder and wolfberry.

[0027] Furthermore, the additive 3 includes 5-10 parts insect powder and 3-8 parts goji berries.

[0028] Fifthly, the present invention provides a method for raising female crocodiles, comprising the following steps:

[0029] (1) Feed the female crocodile the above-mentioned breeding season female crocodile feed 2-3 months before mating until the female crocodile lays eggs;

[0030] (2) Feed the female crocodile the above-mentioned female crocodile feed for 1-3 months after laying eggs;

[0031] (3) Feed the crocodile with the above-mentioned feed except for the times described in steps (1) and (2).

[0032] Sixthly, the present invention provides a method for raising male crocodiles, characterized in that, one month before mating, the male crocodiles are fed the aforementioned male crocodile feed for one month before mating; except for one month before mating, they are fed the aforementioned crocodile feed.

[0033] In a seventh aspect, the present invention provides the application of the above-mentioned crocodile feed and / or the above-mentioned female crocodile feed during the breeding season and / or the above-mentioned female crocodile feed 1-3 months after laying eggs and / or the above-mentioned male crocodile feed 1 month before mating in improving the quality of crocodile husbandry.

[0034] Furthermore, the quality of crocodile rearing includes: crocodile meat yield, number of eggs laid, fertilization rate of crocodile eggs, and hatching rate.

[0035] The beneficial effects of this invention are as follows:

[0036] (1) This invention improves the meat yield of crocodiles by adjusting the composition of crocodile feed and adding fish, fish meal, vitamins, calcium powder, medicinal materials and probiotics in different proportions.

[0037] (2) This invention adjusts the feed for different types of crocodiles and for crocodiles of different stages and sexes to improve the meat yield, egg production rate, fertilization rate and hatching rate of crocodile eggs.

[0038] (3) This invention improves the egg production rate of crocodiles in the following year by adding and adjusting the feed of female crocodiles after they lay eggs, and also improves the fertilization rate and hatching rate of crocodile eggs. Detailed Implementation

[0039] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention is further illustrated below with specific embodiments. However, these embodiments are merely preferred embodiments and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the scope of protection of this invention. It is worth noting that the raw materials used in this invention are all common commercially available products, and their sources are not specifically limited. The technical and scientific terms used in the embodiments have the meanings commonly understood by those skilled in the art to which this invention pertains.

[0040] The present invention does not limit the source of the raw materials used. Unless otherwise specified, the raw materials used in the present invention are all commercially available products in this technical field.

[0041] The "range" disclosed in this document takes the form of a lower limit and an upper limit. It can consist of one or more lower limits and one or more upper limits. A given range is defined by selecting a lower limit and an upper limit.

[0042] The lower and upper limits define the boundaries of a particular range. All ranges that can be defined in this way are inclusive and composable, meaning that any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for a specific parameter, it is also expected that ranges of 60-110 and 80-120 are also expected. Furthermore, if the minimum range values ​​are listed as 1 and 2, and if the maximum ranges are listed as 3, 4, and 5, then the following ranges are all expected: 1-2, 1-4, 1-5, 2-3, 2-4, and 2-5.

[0043] In this invention, unless otherwise specified, the numerical range "ab" represents a shortened representation of any combination of real numbers from a to b, where a and b are both real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" have been listed in this document, and "0-5" is simply a shortened representation of these numerical combinations.

[0044] In this invention, unless otherwise specified, all embodiments and preferred embodiments mentioned herein can be combined to form new technical solutions.

[0045] In this invention, unless otherwise specified, all technical features and preferred features mentioned herein can be combined to form new technical solutions.

[0046] In this invention, female crocodiles are fed breeding-season female crocodile feed for at least 2-3 months before mating until they lay eggs. This means that the female crocodile can be fed breeding-season female crocodile feed for a longer period of time, but it must not be shorter than the period from at least 2-3 months before mating until the female crocodile lays eggs.

[0047] In this invention, female crocodiles are fed female crocodile feed for at least 1-3 months after laying eggs. This means that female crocodile feed can be fed for at least 1-3 months after laying eggs for a longer period, but not less than 1-3 months after laying eggs.

[0048] In this invention, male crocodiles are fed male crocodile feed for at least one month before mating. This means that the feeding period can be longer than one month before mating.

[0049] The insect powder of this invention was purchased from Shandong Maina New Material Co., Ltd., insect protein powder, item number: MN202406.

[0050] The vitamins used in this invention were purchased from: Huatian Pharmaceutical Co., Ltd., a company specializing in aquatic multivitamins.

[0051] Lactobacillus plantarum was purchased from Xi'an Mixianer Biotechnology Co., Ltd., at 200 billion CFU / g, model M1205.

[0052] Bifidobacterium was purchased from Xi'an Mixianer Biotechnology Co., Ltd., Bifidobacterium animalis, 10 billion CFU / g, model M1115.

[0053] Lactobacillus acidophilus was purchased from Xi'an Mixianer Biotechnology Co., Ltd., 10 billion CFU / g, model M1021.

[0054] Lactobacillus casei was purchased from Xi'an Mixianer Biotechnology Co., Ltd., at a concentration of 10 billion CFU / g, model M1128.

[0055] The fish used in this invention are tilapia, the shrimp are white shrimp, the terrestrial animal meat is chicken, the calcium powder is chicken bone powder, and the animal offal is pig liver.

[0056] I. Examples and Comparative Examples

[0057] The materials used in Examples 1-3 and Comparative Examples 1-5 (non-breeding Siamese crocodile feed) are shown in Table 1.

[0058] Table 1

[0059]

[0060] *: Replace Lactobacillus plantarum with Lactobacillus casei.

[0061] The materials used in Examples 4-6 and Comparative Examples 6-8 (non-breeding saltwater crocodile feed) are shown in Table 2.

[0062] Table 2

[0063]

[0064] Table 3 shows the female supplement 1 during the breeding season, the male supplement 2 during the breeding season, and the female after egg laying for Examples 1-6 and Comparative Examples 1-8.

[0065] Table 3

[0066]

[0067]

[0068] Additives 1, 2, and 3 in Comparative Examples 1-4 are the same as in Example 3; additives 1, 2, and 3 in Comparative Examples 5-6 are the same as in Example 6.

[0069] Comparative Example 7

[0070] Siamese crocodiles were fed the saltwater crocodile feed of Example 6.

[0071] Comparative Example 8

[0072] Saltwater crocodiles were fed with the Siamese crocodile feed from Example 3.

[0073] Comparative Example 9

[0074] The difference from Example 3 is that the female Siamese crocodile feed during the breeding season is the same as the non-breeding Siamese crocodile feed used in Example 3.

[0075] Comparative Example 10

[0076] The difference from Example 6 is that the male saltwater crocodile feed during the breeding season is the same as the saltwater crocodile feed during the non-breeding season in Example 6.

[0077] Comparative Example 11

[0078] The difference from Example 6 is that the female saltwater crocodile was fed the same feed as the non-breeding saltwater crocodile feed in Example 6 after laying eggs.

[0079] Comparative Example 12

[0080] Siamese crocodiles and saltwater crocodiles (regardless of sex or age) were fed with feed according to Chinese patent CN113749043A.

[0081] Comparative Example 13

[0082] Siamese crocodiles and saltwater crocodiles (regardless of sex or age) were fed with feed according to Chinese patent CN107296012A.

[0083] Preparation methods of Examples 1-6 and Comparative Examples 1-8:

[0084] S1. Fishmeal: Fish, shrimp, and terrestrial animal meat are cooked, dried, and pulverized.

[0085] S2. Dry and grind houttuynia cordata and malt, mix them evenly with fish meal, vitamins, calcium powder and probiotics, dry them, add fish, and obtain non-breeding Siamese crocodile feed;

[0086] S3. Dry and pulverize houttuynia cordata and hawthorn, mix them evenly with fish meal, vitamins, calcium powder and probiotics, dry them, add fish, and obtain non-breeding season saltwater crocodile feed;

[0087] S4. Adding additive 1 to non-breeding Siamese crocodile feed yields breeding female Siamese crocodile feed; adding additive 3 to non-breeding Siamese crocodile feed yields breeding male Siamese crocodile feed; adding additive 2 to non-breeding Siamese crocodile feed yields post-egg-laying female Siamese crocodile feed; adding additive 1 to non-breeding saltwater crocodile feed yields breeding female saltwater crocodile feed; adding additive 3 to non-breeding saltwater crocodile feed yields breeding male saltwater crocodile feed; adding additive 2 to non-breeding saltwater crocodile feed yields post-egg-laying female saltwater crocodile feed.

[0088] The moisture content after drying is 5 wt%.

[0089] II. Effect Test

[0090] (1) Non-breeding period experiment

[0091] The experimental crocodiles were 8-year-old Siamese and saltwater crocodiles from the same batch. The rearing environment was kept the same (25-32℃, 85% humidity), and they were fed twice a week at 10% of their body weight.

[0092] Siamese crocodiles were randomly divided into 11 groups of 10 crocodiles each (5 females and 5 males). During the non-breeding season, they were fed with the non-breeding season Siamese crocodile diet of Examples 1-3 and Comparative Examples 1-4, 7, 9, 12, and 13.

[0093] Saltwater crocodiles were randomly divided into 10 groups of 10 individuals (5 females and 5 males) and fed with non-breeding Siamese crocodile diets from Examples 4-6 and Comparative Examples 5, 6, 8, 10, 11, 12, and 13 during the non-breeding season.

[0094] The body length and weight of Siamese crocodiles and saltwater crocodiles were measured every 4 months. Meat yield = (weight difference of crocodiles over 4 months) / (food intake of crocodiles over 4 months) × 100%. The experimental results are shown in Table 4.

[0095] Table 4

[0096]

[0097] This application employs a method of feeding different species of crocodiles with different feeds, resulting in a meat yield of 16.9-18.1% for Siamese crocodiles in Examples 1-3 and 16.5-18.2% for crocodiles in Examples 4-5. This method demonstrates high feed conversion rate and good economic benefits.

[0098] Comparative Examples 1 and 4 changed the dosage of the feed formulation, resulting in a decrease in the meat yield of Siamese crocodiles; Comparative Examples 2 and 3 changed the dosage and type of probiotics, resulting in a decrease in the meat yield of Siamese crocodiles; Comparative Example 7 fed Siamese crocodiles with saltwater crocodile feed, resulting in a decrease in the meat yield of Siamese crocodiles; Comparative Examples 12 and 13 used existing crocodile feed technology and fed them regardless of species, resulting in a decrease in the meat yield of Siamese crocodiles.

[0099] Comparative Example 5 changed the amount of fishmeal used; Comparative Example 6 did not use hawthorn, and the meat yield of saltwater crocodiles decreased; Comparative Example 8 fed saltwater crocodiles with Siamese crocodile feed, and the meat yield of saltwater crocodiles decreased; Comparative Examples 12-13 used existing crocodile feed and did not differentiate between species, and the meat yield of saltwater crocodiles decreased.

[0100] (2) Reproduction period experiment

[0101] In April, three months before the Siamese crocodiles reach their breeding season, sexually mature and stable female crocodiles (12 years old) were randomly selected and divided into 6 groups of 10 each. These groups were fed the same breeding-season female Siamese crocodile diet as described in Examples 1-3 and Comparative Examples 9, 12, and 13. Similarly, sexually mature male crocodiles (12 years old) were randomly selected and divided into 6 groups of 10 each. These groups were fed the same breeding-season male Siamese crocodile diet as described in Examples 1-3 and Comparative Examples 9, 12, and 13. All female and male Siamese crocodiles in each group were allowed to breed freely.

[0102] In May, three months before the saltwater crocodiles reach their breeding season, sexually mature and stable female crocodiles (12 years old) were randomly selected and divided into 6 groups of 10 each. Each group was fed the same breeding season female saltwater crocodile diet as described in Examples 4-6 and Comparative Examples 10, 12, and 13. Similarly, sexually mature male crocodiles (12 years old) were randomly selected and divided into 6 groups of 10 each. Each group was fed the same breeding season male saltwater crocodile diet as described in Examples 4-6 and Comparative Examples 10, 12, and 13. Crocodiles fed the same diet were considered as one group, and the females and males within each group were allowed to breed freely.

[0103] The number of eggs laid and the fertilization rate of Siamese crocodiles and saltwater crocodiles were counted, and the crocodile eggs were incubated.

[0104] Observe whether a white line appears on the waist of the crocodile egg after it is laid. The presence of a white line indicates successful fertilization. The white line gradually widens after two to three days. On the third day, select strong crocodile eggs (white line 0.5-0.8mm) for incubation and calculate the hatching rate.

[0105] Hatching rate = (number of crocodile eggs that hatched successfully) / (number of strong crocodile eggs) × 100.

[0106] Fertilization rate = (Number of crocodile eggs with white lines) / (Total number of crocodile eggs) × 100.

[0107] The experimental results are shown in Table 5.

[0108] Table 5

[0109]

[0110]

[0111] This invention feeds Siamese crocodiles and saltwater crocodiles during their breeding season with a specific breeding season feed of this invention. Examples 1-3: 10 female Siamese crocodiles per group, with 502-553 eggs laid, 455-552 of which are strong, fertilization rate 91.6-97.0%, and hatching rate 92.1-99.6%; Examples 4-5: 10 female saltwater crocodiles per group, with 807-885 eggs laid, 749-847 of which are strong, fertilization rate 93.6-96.0%, and hatching rate 98.1-99.2%.

[0112] The Siamese crocodile control group 9, fed with non-breeding Siamese crocodile feed during the breeding season, showed a decrease in the number of eggs laid, the number of strong eggs, the fertilization rate, and the hatching rate. The saltwater crocodile control group 10, fed with non-breeding saltwater crocodile feed during the breeding season, also showed a decrease in the number of eggs laid, the number of strong eggs, the fertilization rate, and the hatching rate. The Siamese crocodile and saltwater crocodile control groups 12-13, fed with existing technology feed during the breeding season, also showed a decrease in the number of eggs laid, the number of strong eggs, the fertilization rate, and the hatching rate.

[0113] (4) 5-year long-term experiment

[0114] Seven-year-old female and male saltwater crocodiles from the same batch were selected and fed the diet described in Example 6 according to time and sex during both the non-breeding and breeding seasons. After egg laying, the female crocodiles were randomly divided into two groups of 10 each, fed the post-egg-laying saltwater crocodile diet of Example 6 and the control diet of Example 11, respectively, for two months. Then, during both the non-breeding and breeding seasons, both groups continued to be fed the diet described in Example 6 according to time and sex until the next egg laying. This feeding cycle was repeated for five years, and the number of eggs laid, fertilization rate, and hatching rate were recorded each year. The experimental results are shown in Table 6.

[0115] Table 6

[0116]

[0117]

[0118] This invention provides a method for feeding saltwater crocodiles with a specific post-spawning saltwater crocodile feed after they have laid eggs, which helps them recover. For crocodiles that are still growing, this method not only helps them recover but also helps them mature quickly and reach their peak egg-laying period, thus improving economic benefits. In contrast, saltwater crocodiles that are not fed with the specific post-spawning saltwater crocodile feed reach their peak egg-laying period more slowly.

[0119] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A crocodile feed with high meat yield, characterized in that, Composed of fish, fishmeal, vitamins, calcium powder, medicinal herbs, and probiotics; the fishmeal is composed of fish, shrimp, and terrestrial animal meat in a mass ratio of (4-12):(4-8):(12-20); the crocodiles include Siamese crocodiles and saltwater crocodiles; when the crocodile is a Siamese crocodile, the medicinal herbs are houttuynia cordata and malt; when the crocodile is a saltwater crocodile, the medicinal herbs are houttuynia cordata and hawthorn; when the crocodile is a Siamese crocodile, the crocodile feed consists of 60-80 parts fish, 20-40 parts fishmeal, 3-8 parts vitamins, and 1 part probiotics. The feed consists of 0-15 parts calcium powder, 3-8 parts houttuynia cordata, 3-8 parts malt, and 5-10 parts probiotics. When the crocodile is a saltwater crocodile, the crocodile feed consists of 20-30 parts fish, 40-80 parts fish meal, 3-8 parts vitamins, 5-10 parts calcium powder, 3-8 parts houttuynia cordata, 3-8 parts hawthorn, and 5-10 parts probiotics. The probiotics include Lactobacillus plantarum, Bifidobacterium, and Lactobacillus acidophilus in a mass ratio of (1-3):2:(3-5) or 3:5:7 or 2:3:

4.

2. The crocodile feed according to claim 1, characterized in that, The fish species include silver carp, bighead carp, grass carp, blunt snout bream, black carp, mud carp, common carp, crucian carp, eel, and tilapia; and / or the terrestrial animal meat includes at least one of chicken, duck, goose, beef, mutton, horse meat, donkey meat, and pork; and / or the vitamins include vitamin A, vitamin B, vitamin D, and vitamin E; the calcium powder includes at least one of calcium carbonate, calcium lactate, calcium gluconate, calcium citrate, and bone meal.

3. A type of feed for female crocodiles during their breeding season, characterized in that, The feed consists of the crocodile feed and additive 1 as described in any one of claims 1-2; the breeding period is from at least 2 months before the female crocodile mates until the female crocodile lays eggs; the additive 1 consists of animal offal, insect powder, calcium powder and angelica.

4. The breeding season female crocodile feed according to claim 3, characterized in that, Additive 1 consists of 5-10 parts animal offal, 5-10 parts insect powder, 5-15 parts calcium powder, and 3-8 parts angelica.

5. A feed for female crocodiles that is at least one month post-laying, characterized in that, It consists of the crocodile feed according to any one of claims 1-2 and additive 2; said additive 2 consists of animal offal, insect powder, calcium powder, honeysuckle and vitamins.

6. The female crocodile feed according to claim 5, for at least one month after egg laying, is characterized in that... Additive 2 consists of 5-10 parts animal offal, 5-10 parts insect powder, 5-15 parts calcium powder, 3-8 parts honeysuckle, and 5-10 parts vitamins.

7. A feed for male crocodiles, administered at least one month prior to mating, characterized in that... It consists of the crocodile feed according to any one of claims 1-2 and additive 3; said additive 3 consists of insect powder and wolfberry.

8. The male crocodile feed according to claim 7, for at least one month prior to mating, is characterized in that... Additive 3 consists of 5-10 parts insect powder and 3-8 parts wolfberry.

9. A method for raising female crocodiles, characterized in that, Includes the following steps: (1) For at least two months before mating and until the female crocodile lays eggs, feed the female crocodile with the breeding season feed as described in any one of claims 3-4; (2) For at least one month after the female crocodile lays eggs, feed the female crocodile with the breeding season feed as described in any one of claims 5-6; (3) Except for the time periods described in steps (1) and (2), feed the crocodile with the crocodile feed as described in any one of claims 1-2.

10. A method for raising male crocodiles, characterized in that, Male crocodiles are fed the male crocodile feed described in any one of claims 7-8 for at least one month before mating; except for the period of at least one month before mating, they are fed the crocodile feed described in any one of claims 1-2.

11. The use of the crocodile feed according to any one of claims 1-2 and / or the female crocodile feed during the breeding season according to any one of claims 3-4 and / or the female crocodile feed for at least one month after laying eggs according to any one of claims 5-6 and / or the male crocodile feed for at least one month before mating according to any one of claims 7-8 in improving the quality of crocodile husbandry.

12. The application according to claim 11, characterized in that, The quality of crocodile rearing includes: crocodile meat yield, number of eggs laid, fertilization rate of crocodile eggs, and hatching rate.

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