Lamb starter feed formula and ultra-early weaning method

Abstract

The invention discloses a lamb starter feed formula and an ultra-early weaning method, and relates to the technical field of livestock breeding, the lamb starter feed formula is composed of the following components: insect protein, algae protein and matching of conventional nutritional ingredients, the insect protein and the algae protein are introduced, and the matching of the conventional nutritional ingredients is combined, so that the lamb starter feed is obtained. The insect protein is rich in high-quality amino acid and unsaturated fatty acid and is beneficial to construction of lamb body tissues and maintenance of physiological functions, the algae protein is rich in protein, vitamins and mineral substances and provides an important material basis for cell growth and tissue repair of the lambs, and the nutrition structure is optimized, so that the lambs are more healthy and healthy. The growth and development speed of the lambs can be remarkably increased, the physique and immunity of the lambs are enhanced, and the breeding benefits are increased.

Description

Technical Field

[0001] The invention relates to the technical field of animal husbandry, and in particular to a lamb starter feed formula and an ultra-early weaning method. Background Art

[0002] In the field of animal husbandry technology, lamb feeding and management has always been an important link. Among them, the formula of starter feed and the choice of weaning method have a vital impact on the growth and development, health status and breeding benefits of lambs. As the first solid feed that lambs come into contact with, the nutritional composition and proportion of starter feed need to be carefully designed to meet the high nutritional demand of lambs in the early stages of growth and development. At the same time, weaning is an important turning point in the lamb breeding process, and scientific and reasonable methods need to be adopted to ensure that lambs can make a smooth transition and avoid a series of problems caused by weaning stress.

[0003] Traditional lamb starter feed formulas often focus on the combination of conventional nutrients, while ignoring the application of new nutrient sources such as insect protein and algae protein. Although this formula can provide certain nutritional support for lambs, it is insufficient in meeting the lambs' needs for high-quality amino acids and unsaturated fatty acids. In addition, traditional weaning methods often use one-time weaning or sudden weaning, which can easily lead to weaning stress in lambs, loss of appetite, indigestion, and even affect the growth, development and health of lambs in severe cases.

[0004] In summary, the traditional lamb starter feed formula and weaning method have certain limitations in meeting the nutritional needs of lambs and reducing weaning stress. Therefore, it is particularly important to develop a lamb starter feed formula and ultra-early weaning method. Summary of the invention

[0005] The purpose of the present invention is to make up for the shortcomings of the prior art and provide a lamb starter feed formula and an ultra-early weaning method. The method introduces insect protein and algae protein as well as a combination of conventional nutrients, and combines a staged weaning method, aiming to provide lambs with more comprehensive and balanced nutritional support while reducing the impact of weaning stress on lambs.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a lamb starter feed formula and an ultra-early weaning method, comprising the following ingredients: a combination of insect protein, algae protein, and conventional nutritional ingredients;

[0007] The insect protein is black soldier fly larvae protein, wherein the lysine content is 3%-8%, the methionine content is 1%-3%, the black soldier fly larvae protein includes unsaturated fatty acids, wherein the unsaturated fatty acids include linoleic acid content of 8%-15%, linolenic acid content of 6%-12%, trace element iron content of 100-200 mg / kg, and zinc content of 100-150 mg / kg;

[0008] How to add insect protein: In the preparation of starter feed, the proportion of black soldier fly larvae protein added is precisely controlled according to the growth stage and nutritional needs of the lambs;

[0009] The algae protein: Spirulina contains protein, and has a reasonable amino acid composition, rich in various vitamins and minerals, and the active ingredients in Spirulina are polysaccharides and phycocyanin;

[0010] Adding method of spirulina protein: determine the adding ratio of spirulina protein in the starter feed. In the early growth stage of lambs, from birth to 2 weeks, the adding ratio of spirulina protein is 3%-7%. In the middle growth stage of lambs, from 3 weeks to 6 weeks, the adding ratio is 5%-10%. In the late growth stage of lambs, from 7 weeks to 12 weeks, the adding ratio is 8%-12%.

[0011] The combination of conventional nutrients: corn is an energy feed, containing starch and carbohydrates. Corn also contains protein, fat, vitamins and mineral nutrients, which cooperate with insect protein and algae protein;

[0012] Soybean meal is a source of protein feed, with a protein content of 40%-50% and a balanced amino acid composition. It is rich in essential amino acids such as lysine and methionine, with a lysine content of 2%-3% and a methionine content of 0.6%-0.9%. Soybean meal also contains calcium, phosphorus minerals and B vitamins, with a calcium content of 250-350mg / kg, a phosphorus content of 600-800mg / kg, a vitamin B1 content of 2-4mg / kg, and a vitamin B2 content of 4-6mg / kg.

[0013] Bran is rich in dietary fiber. It also contains protein, vitamins and mineral nutrients. The protein content is 12%-18%, the vitamin B1 content is 3-5mg / kg, the vitamin B2 content is 2-4mg / kg, the calcium content is 150-250mg / kg, and the phosphorus content is 300-500mg / kg.

[0014] The proportions of conventional nutrients of corn, soybean meal and bran are adjusted according to the growth stage, weight and physiological condition of the lambs. In the early growth stage of lambs, from birth to 2 weeks, the ratios of corn, soybean meal and bran are 45:35:20-55:30:15. In the middle growth stage of lambs, from 3 to 6 weeks, the ratios are 40:40:20-45:35:20. In the late growth stage of lambs, from 7 to 12 weeks, the ratios are 35:45:20-40:40:20. The interaction between different nutrients needs to be considered.

[0015] Furthermore, the addition ratio of black soldier fly larvae protein is precisely controlled according to the growth stage and nutritional needs of the lambs. In the early growth stage of the lambs, from birth to 2 weeks, the addition ratio of black soldier fly larvae protein is 8%-12%, in the middle growth stage of the lambs, from 3 weeks to 6 weeks, the addition ratio is 12%-18%, and in the late growth stage of the lambs, from 7 weeks to 12 weeks, the addition ratio is 15%-25%.

[0016] Furthermore, the algae protein spirulina contains protein with a protein content of 60%-70%, and has a reasonable amino acid composition, is rich in various vitamins, with a vitamin A content of 8000-12000 IU / kg, a total amount of B vitamins of 40-60 mg / kg, a vitamin C content of 150-250 mg / kg, a vitamin E content of 80-120 mg / kg, and rich minerals, with a calcium content of 800-1200 mg / kg, an iron content of 150-250 mg / kg, a zinc content of 120-180 mg / kg, a magnesium content of 600-1000 mg / kg, and an active ingredient polysaccharide content of 300-700 mg / kg and a phycocyanin content of 200-400 mg / kg in the spirulina.

[0017] Furthermore, the conventional nutritional ingredients include 65%-75% starch content in corn, 80%-90% carbohydrate content in corn, 7%-10% protein content in corn, 3%-5% fat content in corn, 1-3mg / kg vitamin B1 content in corn, 2-4mg / kg vitamin B2 content in corn, 8-12mg / kg vitamin E content in corn, 80-120mg / kg calcium content in corn, and 200-300mg / kg phosphorus content in corn.

[0018] Furthermore, the soybean meal is a source of protein feed, wherein the protein content is 40%-50%, and the amino acid composition is balanced, rich in lysine and methionine essential amino acids, the lysine content is 2%-3%, and the methionine content is 0.6%-0.9%. The soybean meal also contains rich calcium, phosphorus minerals and B vitamins, with a calcium content of 250-350 mg / kg, a phosphorus content of 600-800 mg / kg, a vitamin B1 content of 2-4 mg / kg, and a vitamin B2 content of 4-6 mg / kg.

[0019] On the other hand, a lamb ultra-early weaning method is characterized in that the specific steps of the method are: S1, using a staged weaning method:

[0020] S1.1. Start reducing contact time one week before weaning. Separate lambs from ewes for 1-3 hours on the first day, and increase the separation time by 1-2 hours each day. During the separation period, place lambs in special nursery pens and provide some soft bedding and toys to reduce the anxiety of lambs. Closely observe the behavior and health of lambs to ensure that they can adapt to this change.

[0021] S1.2. As the time between lambs and ewes increases, lambs will gradually adapt to the environment without breast milk. In this process, the number of breast milk feedings should be gradually reduced. Three days before weaning, the number of breast milk feedings should be reduced from three times a day to two times a day, and the time for each feeding should be controlled at 10-20 minutes. When it is reduced to one time, the feeding time should be 15-30 minutes. At the same time, the supply of milk replacer should be increased, and the number of milk replacer feedings should be gradually increased from twice a day to four times a day. In the process of reducing breast milk feeding, pay attention to the appetite and digestion of lambs. If lambs have loss of appetite and indigestion, adjust the ratio of breast milk and milk replacer.

[0022] S2. Transition using milk replacer:

[0023] S2.1. During the weaning process, provide lambs with high-quality milk replacers. The formula of the milk replacer should match the nutritional needs of the lambs. The vitamin and mineral content should meet the growth needs of the lambs. The protein sources of the milk replacer include dairy products, soy protein, and insect protein. The addition of insect protein and spirulina protein improves the nutritional value of the milk replacer and enhances the immunity and anti-stress ability of the lambs.

[0024] S2.2. The fat sources of milk replacers include vegetable oils and animal fats, which provide sufficient energy. Carbohydrates should be corn and wheat grains, which are easy to digest and absorb. At the same time, appropriate amounts of vitamins and minerals should be added to milk replacers.

[0025] S2.3. During the weaning process, gradually increase the proportion of milk replacer and reduce breast milk intake. Starting from three days before weaning, increase the amount of milk replacer fed every day.

[0026] S2.4. On the first day, increase the amount of milk substitute to 1 / 3-1 / 2 of the original amount, and reduce the number of breastfeeding to two times. On the second day, increase the amount of milk substitute to 2 / 3-3 / 4 of the original amount, and reduce the number of breastfeeding to once. On the third day, stop breastfeeding completely and only provide milk substitute;

[0027] S2.5. When increasing the proportion of milk replacer, pay attention to the lambs' appetite and digestion. If the lambs have loss of appetite and indigestion, adjust the proportion of milk replacer.

[0028] S3, adding insect protein and spirulina protein:

[0029] S3.1. Add insect protein and spirulina protein to milk replacer to improve the nutritional value of milk replacer. Insect protein is rich in high-quality amino acids and unsaturated fatty acids, and spirulina protein is rich in protein, vitamins and minerals. These nutrients play an important role in the growth and development and immunity of lambs. The amount of insect protein added is in the range of 5%-15%, and the amount of spirulina protein added is in the range of 3%-10%. When adding insect protein and spirulina protein, attention should be paid to selecting high-quality raw materials and processing them to improve their palatability and digestibility.

[0030] S3.2. Such milk replacers can better help lambs to smoothly pass the weaning period and reduce the impact of weaning stress on lambs. Weaning stress refers to the physiological and psychological stress caused by environmental changes and dietary changes during the weaning process. Milk replacers with added insect protein and spirulina protein provide richer nutrition, enhance the immunity and anti-stress ability of lambs, and reduce the impact of weaning stress on lambs.

[0031] S3.3. During the weaning process, a comfortable environment and exercise space should be provided to reduce the impact of weaning stress on lambs. Regular health checks should be conducted to closely observe the behavior and health of lambs to identify and deal with problems in a timely manner.

[0032] Furthermore, in S1.1, the lambs are placed in a special nursery pen, the temperature of which is maintained at 20-25° C. and the humidity at 50%-70%.

[0033] Furthermore, in S1.2, when the lamb suffers from indigestion, the proportion of breast milk is increased by 10%-20%, and the proportion of milk replacer is reduced by a corresponding amount.

[0034] Furthermore, when the lambs show loss of appetite, the proportion of milk replacer is reduced by 10%-20% and some easily digestible feed is added in S2.5.

[0035] Furthermore, the S3.3 provides a comfortable environment with a temperature maintained at 20-25°C, a humidity at 50%-70%, and exercise space, with the activity area of ​​each lamb being no less than 1-2 square meters.

[0036] Compared with the prior art, a lamb starter feed formula and ultra-early weaning method have the following beneficial effects:

[0037] 1. The formula of this lamb starter feed provides comprehensive and balanced nutrition for lambs by introducing insect protein and algae protein, and combining them with conventional nutrients. Insect protein is rich in high-quality amino acids and unsaturated fatty acids, which helps to build lamb body tissues and maintain physiological functions. Algae protein is rich in protein, vitamins and minerals, which provides an important material basis for lamb cell growth and tissue repair. The optimization of this nutritional structure can significantly improve the growth and development rate of lambs, enhance their physical fitness and immunity, and thus improve breeding efficiency.

[0038] 2. This ultra-early weaning method adopts a staged weaning approach, which gradually reduces the contact time between lambs and ewes and the number of breastfeeding times, while increasing the supply of milk replacer, so that the lambs can gradually adapt to the environment without breast milk. Insect protein and spirulina protein are added to the milk replacer to improve the nutritional value of the milk replacer and meet the nutritional needs of the lambs during the weaning process. In addition, by providing a comfortable environment and exercise space, as well as regular health checks, the impact of weaning stress on the lambs is further reduced. This method not only helps the lambs to smoothly pass the weaning period, but also improves the survival rate and health level of the lambs, laying a solid foundation for subsequent breeding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 An operation flow chart of an ultra-early weaning method for lambs. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Comparative Example

[0043] Black soldier fly larvae protein is selected as the source of insect protein. In the early growth stage of lambs (from birth to 2 weeks), according to the growth needs of lambs, the addition ratio of black soldier fly larvae protein is precisely controlled to be 10%. At this time, the lysine content of black soldier fly larvae protein is 5%, the methionine content is 2%, the linoleic acid content is 10%, the linolenic acid content is 8%, the trace element iron content is 150 mg / kg, and the zinc content is 120 mg / kg. In the mid-growth stage of lambs (3 to 6 weeks), the addition ratio of black soldier fly larvae protein is 15%, and in the late growth stage of lambs (7 to 12 weeks), the addition ratio is 20%.

[0044] Spirulina is used as the source of algae protein, with a protein content of 65%, a reasonable amino acid composition, and rich in various vitamins, including 10000IU / kg of vitamin A, 50mg / kg of total B vitamins, 200mg / kg of vitamin C, 100mg / kg of vitamin E, and rich in minerals, with a calcium content of 1000mg / kg, an iron content of 200mg / kg, a zinc content of 150mg / kg, and a magnesium content of 800mg / kg. The active ingredient polysaccharide content in spirulina is 500mg / kg, and the phycocyanin content is 300mg / kg. In the early growth stage of lambs, the addition ratio of spirulina protein is 5%, in the middle growth stage of lambs, the addition ratio is 8%, and in the late growth stage of lambs, the addition ratio is 10%.

[0045] Corn as energy feed contains 70% starch, 85% carbohydrate, 8% protein, 4% fat, 2mg / kg vitamin B1, 3mg / kg vitamin B2, 10mg / kg vitamin E, 100mg / kg calcium and 250mg / kg phosphorus.

[0046] Soybean meal: protein content is 45%, lysine content is 2.5%, methionine content is 0.8%, calcium content is 300mg / kg, phosphorus content is 700mg / kg, vitamin B1 content is 3mg / kg, vitamin B2 content is 5mg / kg;

[0047] Bran: protein content is 15%, vitamin B1 content is 4 mg / kg, vitamin B2 content is 3 mg / kg, calcium content is 200 mg / kg, and phosphorus content is 400 mg / kg.

[0048] In the early growth stage of lambs, the ratio of corn, soybean meal and bran is 50:30:20; in the middle growth stage of lambs, the ratio is 42:38:20; and in the late growth stage of lambs, the ratio is 38:42:20.

[0049] Start implementing steps to reduce contact time one week before weaning. Separate the lambs from the ewes for 2 hours on the first day, and increase the separation time by 1.5 hours every day thereafter. During the separation period, place the lambs in a special nursery with the temperature maintained at 22°C and humidity at 60%. Provide some soft bedding and toys, and closely observe the behavior and health of the lambs. As the separation time increases, reduce the number of breast milk feedings from three times a day to two times three days before weaning, with each feeding time controlled at 15 minutes. When it is reduced to one time, the feeding time is 20 minutes. At the same time, increase the supply of milk replacer, and gradually increase the number of milk replacer feedings from twice a day to four times. Pay attention to the lambs' appetite and digestion. If loss of appetite and indigestion occur, adjust the ratio of breast milk to milk replacer.

[0050] Provide high-quality milk replacer with a formula that matches the nutritional needs of lambs. The protein sources of milk replacer include dairy products, soy protein, insect protein (black soldier fly larvae protein added at 10%) and spirulina protein (added at 5%) to improve the nutritional value of milk replacer and enhance the immunity and stress resistance of lambs. The fat sources of milk replacer include vegetable oil and animal fat to provide sufficient energy. Carbohydrates include corn and wheat grains, which are easy to digest and absorb. At the same time, an appropriate amount of vitamins and minerals should be added to the milk replacer. Starting from three days before weaning, increase the amount of milk replacer fed every day. On the first day, increase the amount of milk replacer fed to 1 / 2 of the original amount, and reduce the number of breast milk feedings to two times. On the second day, increase the amount of milk replacer fed to 3 / 4 of the original amount, and reduce the number of breast milk feedings to one time. On the third day, stop feeding breast milk completely and only provide milk replacer. Pay attention to the lamb's appetite and digestion. If there is a problem, adjust the proportion of milk replacer.

[0051] Insect protein and spirulina protein are added to milk replacer. Insect protein is rich in high-quality amino acids and unsaturated fatty acids, and spirulina protein is rich in protein, vitamins and minerals. High-quality raw materials are selected and processed to improve their palatability and digestibility. During the weaning process, a comfortable environment is provided, the temperature is maintained at 22°C, the humidity is 60%, the activity area for each lamb is not less than 1.5 square meters, and there is space for exercise. Regular health checks are carried out, the behavior and health of the lambs are closely observed, and problems are discovered and dealt with in a timely manner.

[0052] Embodiment 1

[0053] According to the above comparative examples 1-3, only the content of insect protein was changed, and black soldier fly larvae protein was selected as the source of insect protein. In the early growth stage of lambs (birth to 2 weeks), the addition ratio of black soldier fly larvae protein was 8%. At this time, the lysine content of black soldier fly larvae protein was 4%, the methionine content was 1.8%, the linoleic acid content was 9%, the linolenic acid content was 7%, the trace element iron content was 140 mg / kg, and the zinc content was 110 mg / kg. In the mid-growth stage of lambs (3 weeks to 6 weeks), the addition ratio of black soldier fly larvae protein was 13%, and in the late growth stage of lambs (7 weeks to 12 weeks), the addition ratio was 18%.

[0054] Effect: Compared with traditional starter feed, the average weight gain of 12-week-old lambs increased by about 12%, and the daily weight gain increased by 0.08-0.12 kg.

[0055] Embodiment 2

[0056] Black soldier fly larvae protein is selected as the source of insect protein. In the early growth stage of lambs (birth to 2 weeks), the addition ratio of black soldier fly larvae protein is 12%. At this time, the lysine content of black soldier fly larvae protein is 6%, the methionine content is 2.2%, the linoleic acid content is 11%, the linolenic acid content is 9%, the trace element iron content is 160 mg / kg, and the zinc content is 130 mg / kg. In the mid-growth stage of lambs (3 weeks to 6 weeks), the addition ratio of black soldier fly larvae protein is 17%, and in the late growth stage of lambs (7 weeks to 12 weeks), the addition ratio is 22%.

[0057] Effect: Compared with traditional starter feed, the average weight gain of 12-week-old lambs increased by about 18%, and the daily weight gain increased by 0.12-0.18 kg.

[0058] Embodiment 3

[0059] Black soldier fly larvae protein is selected as the source of insect protein. In the early growth stage of lambs (from birth to 2 weeks), the addition ratio of black soldier fly larvae protein is 15%. At this time, the lysine content of black soldier fly larvae protein is 7%, the methionine content is 2.5%, the linoleic acid content is 12%, the linolenic acid content is 10%, the trace element iron content is 180 mg / kg, and the zinc content is 140 mg / kg. In the mid-growth stage of lambs (3 to 6 weeks), the addition ratio of black soldier fly larvae protein is 20%, and in the late growth stage of lambs (7 to 12 weeks), the addition ratio is 25%.

[0060] Effect: Compared with traditional starter feed, the average weight gain of 12-week-old lambs increased by about 20%, and the daily weight gain increased by 0.15-0.2 kg.

[0061] Embodiment 4

[0062] According to the above comparative examples 4-6, only the content of spirulina protein is changed. Spirulina is used as the source of algae protein, the spirulina protein content is 65%, the amino acid composition is reasonable, and it is rich in various vitamins, wherein the vitamin A content is 10000IU / kg, the total amount of B vitamins is 50mg / kg, the vitamin C content is 200mg / kg, the vitamin E content is 100mg / kg, and the mineral content is rich, the calcium content is 1000mg / kg, the iron content is 200mg / kg, the zinc content is 150mg / kg, and the magnesium content is 800mg / kg. The active ingredient polysaccharide content in spirulina is 500mg / kg, and the phycocyanin content is 300mg / kg. In the early growth stage of lambs, the spirulina protein addition ratio is 4%, in the middle growth stage of lambs, the addition ratio is 7%, and in the late growth stage of lambs, the addition ratio is 9%.

[0063] Effect: Compared with traditional starter feed, the average weight gain of 12-week-old lambs increased by about 12%, and the daily weight gain increased by 0.08-0.12 kg.

[0064] Embodiment 5

[0065] Spirulina is used as the source of algae protein, with a protein content of 65%, a reasonable amino acid composition, and rich in various vitamins, including 10000IU / kg of vitamin A, 50mg / kg of total B vitamins, 200mg / kg of vitamin C, 100mg / kg of vitamin E, and rich in minerals, with a calcium content of 1000mg / kg, an iron content of 200mg / kg, a zinc content of 150mg / kg, and a magnesium content of 800mg / kg. The active ingredient polysaccharide content in spirulina is 500mg / kg, and the phycocyanin content is 300mg / kg. In the early growth stage of lambs, the addition ratio of spirulina protein is 6%, in the middle growth stage of lambs, the addition ratio is 9%, and in the late growth stage of lambs, the addition ratio is 11%.

[0066] Effect: Compared with traditional starter feed, the average weight gain of 12-week-old lambs increased by about 18%, and the daily weight gain increased by 0.12-0.16 kg.

[0067] Embodiment 6

[0068] Spirulina is used as the source of algae protein, with a protein content of 65%, a reasonable amino acid composition, and rich in various vitamins, including 10000IU / kg of vitamin A, 50mg / kg of total B vitamins, 200mg / kg of vitamin C, 100mg / kg of vitamin E, and rich in minerals, with a calcium content of 1000mg / kg, an iron content of 200mg / kg, a zinc content of 150mg / kg, and a magnesium content of 800mg / kg. The active ingredient polysaccharide content in spirulina is 500mg / kg, and the phycocyanin content is 300mg / kg. In the early growth stage of lambs, the addition ratio of spirulina protein is 7%, in the middle growth stage of lambs, the addition ratio is 10%, and in the late growth stage of lambs, the addition ratio is 13%.

[0069] Effect: Compared with traditional starter feed, the average weight gain of 12-week-old lambs increased by about 22%, and the daily weight gain increased by 0.15-0.18 kg.

[0070] The specific contents are shown in the following table:

[0071]

[0072] As described in the above table, different lamb feed embodiments are mainly introduced. Examples 1 to 3 use black soldier fly larvae protein as the insect protein source, and set different addition ratios at different growth stages of lambs. As the addition ratio increases, the average weight gain and daily weight gain of 12-week-old lambs also increase accordingly. Examples 4 to 6 use spirulina as the algae protein source, and also set different addition ratios at different growth stages of lambs. As the addition ratio of spirulina protein increases, the average weight gain and daily weight gain of 12-week-old lambs also increase.

[0073] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A lamb starter feed formula, characterized in that: It is composed of the following ingredients: insect protein, algae protein, and a combination of conventional nutrients; The insect protein is black soldier fly larvae protein, wherein the lysine content is 3%-8%, the methionine content is 1%-3%, the black soldier fly larvae protein includes unsaturated fatty acids, wherein the unsaturated fatty acids include linoleic acid content of 8%-15%, linolenic acid content of 6%-12%, trace element iron content of 100-200 mg / kg, and zinc content of 100-150 mg / kg; How to add insect protein: In the preparation of starter feed, the proportion of black soldier fly larvae protein added is precisely controlled according to the growth stage and nutritional needs of the lambs; The algae protein: Spirulina contains protein, and has a reasonable amino acid composition, rich in various vitamins and minerals, and the active ingredients in Spirulina are polysaccharides and phycocyanin; Adding method of spirulina protein: determine the adding ratio of spirulina protein in the starter feed. In the early growth stage of lambs, from birth to 2 weeks, the adding ratio of spirulina protein is 3%-7%. In the middle growth stage of lambs, from 3 weeks to 6 weeks, the adding ratio is 5%-10%. In the late growth stage of lambs, from 7 weeks to 12 weeks, the adding ratio is 8%-12%. The combination of conventional nutrients: corn is an energy feed, containing starch and carbohydrates. Corn also contains protein, fat, vitamins and mineral nutrients, which cooperate with insect protein and algae protein; Soybean meal is a source of protein feed, with a protein content of 40%-50% and a balanced amino acid composition. It is rich in essential amino acids such as lysine and methionine, with a lysine content of 2%-3% and a methionine content of 0.6%-0.9%. Soybean meal also contains calcium, phosphorus minerals and B vitamins, with a calcium content of 250-350mg / kg, a phosphorus content of 600-800mg / kg, a vitamin B1 content of 2-4mg / kg, and a vitamin B2 content of 4-6mg / kg. Bran is rich in dietary fiber. It also contains protein, vitamins and mineral nutrients. The protein content is 12%-18%, the vitamin B1 content is 3-5mg / kg, the vitamin B2 content is 2-4mg / kg, the calcium content is 150-250mg / kg, and the phosphorus content is 300-500mg / kg. The proportions of conventional nutrients of corn, soybean meal and bran are adjusted according to the growth stage, weight and physiological condition of the lambs. In the early growth stage of lambs, from birth to 2 weeks, the ratios of corn, soybean meal and bran are 45:35:20-55:30:

15. In the middle growth stage of lambs, from 3 to 6 weeks, the ratios are 40:40:20-45:35:

20. In the late growth stage of lambs, from 7 to 12 weeks, the ratios are 35:45:20-40:40:

20. The interaction between different nutrients needs to be considered.

2. The lamb starter feed formula according to claim 1, characterized in that: The addition ratio of black soldier fly larvae protein is precisely controlled according to the growth stage and nutritional needs of the lambs. In the early growth stage of the lambs, from birth to 2 weeks, the addition ratio of black soldier fly larvae protein is 8%-12%, in the middle growth stage of the lambs, from 3 weeks to 6 weeks, the addition ratio is 12%-18%, and in the late growth stage of the lambs, from 7 weeks to 12 weeks, the addition ratio is 15%-25%.

3. The lamb starter feed formula according to claim 1, characterized in that: The algae protein spirulina contains protein with a protein content of 60%-70%, and has a reasonable amino acid composition, is rich in multiple vitamins, with a vitamin A content of 8000-12000 IU / kg, a total amount of B vitamins of 40-60 mg / kg, a vitamin C content of 150-250 mg / kg, a vitamin E content of 80-120 mg / kg, and rich minerals, with a calcium content of 800-1200 mg / kg, an iron content of 150-250 mg / kg, a zinc content of 120-180 mg / kg, and a magnesium content of 600-1000 mg / kg. The active ingredient polysaccharide content in the spirulina is 300-700 mg / kg, and the phycocyanin content is 200-400 mg / kg.

4. The lamb starter feed formula according to claim 1, characterized in that: The conventional nutritional ingredients include 65%-75% starch content in corn, 80%-90% carbohydrate content in corn, 7%-10% protein content in corn, 3%-5% fat content in corn, 1-3mg / kg vitamin B1 content in corn, 2-4mg / kg vitamin B2 content in corn, 8-12mg / kg vitamin E content in corn, 80-120mg / kg calcium content in corn, and 200-300mg / kg phosphorus content in corn.

5. The lamb starter feed formula according to claim 1, characterized in that: The soybean meal is a protein feed source, wherein the protein content is 40%-50%, and the amino acid composition is balanced, and it is rich in lysine and methionine essential amino acids, with the lysine content being 2%-3% and the methionine content being 0.6%-0.9%. The soybean meal also contains rich calcium, phosphorus minerals and vitamin B nutrients, with the calcium content being 250-350 mg / kg, the phosphorus content being 600-800 mg / kg, the vitamin B1 content being 2-4 mg / kg, and the vitamin B2 content being 4-6 mg / kg.

6. A method for ultra-early weaning of lambs, characterized in that: The specific steps of this method are: S1. Use a phased weaning approach: S1.

1. Start reducing contact time one week before weaning. Separate lambs from ewes for 1-3 hours on the first day, and increase the separation time by 1-2 hours every day. During the separation period, place lambs in special nursery pens, provide some soft bedding and toys to reduce the anxiety of lambs, and closely observe the behavior and health of lambs. S1.

2. As the time between lambs and ewes increases, lambs will gradually adapt to the environment without breast milk. In this process, the number of breast milk feedings should be gradually reduced. Three days before weaning, the number of breast milk feedings should be reduced from three times a day to two times a day, and the time for each feeding should be controlled at 10-20 minutes. When it is reduced to one time, the feeding time should be 15-30 minutes. At the same time, the supply of milk replacer should be increased, and the number of milk replacer feedings should be gradually increased from twice a day to four times a day. In the process of reducing breast milk feeding, pay attention to the appetite and digestion of lambs. If lambs have loss of appetite and indigestion, adjust the ratio of breast milk and milk replacer. S2. Transition using milk replacer: S2.

1. During the weaning process, provide lambs with high-quality milk replacers. The formula of the milk replacer should match the nutritional needs of the lambs. The vitamin and mineral content should meet the growth needs of the lambs. The protein sources of the milk replacer include dairy products, soy protein, and insect protein. The addition of insect protein and spirulina protein improves the nutritional value of the milk replacer and enhances the immunity and anti-stress ability of the lambs. S2.

2. The fat sources of milk replacers include vegetable oils and animal fats, which provide sufficient energy. Carbohydrates should be corn and wheat grains, which are easy to digest and absorb. At the same time, appropriate amounts of vitamins and minerals should be added to milk replacers. S2.

3. During the weaning process, gradually increase the proportion of milk replacer and reduce breast milk intake. Starting from three days before weaning, increase the amount of milk replacer fed every day. S2.

4. On the first day, increase the amount of milk substitute to 1 / 3-1 / 2 of the original amount, and reduce the number of breastfeeding to two times. On the second day, increase the amount of milk substitute to 2 / 3-3 / 4 of the original amount, and reduce the number of breastfeeding to once. On the third day, stop breastfeeding completely and only provide milk substitute; S2.

5. When increasing the proportion of milk replacer, pay attention to the lambs' appetite and digestion. If the lambs have loss of appetite and indigestion, adjust the proportion of milk replacer; S3, adding insect protein and spirulina protein: S3.

1. Add insect protein and spirulina protein to milk replacer to improve the nutritional value of milk replacer. Insect protein is rich in high-quality amino acids and unsaturated fatty acids, and spirulina protein is rich in protein, vitamins and minerals. These nutrients play an important role in the growth and development and immunity of lambs. The amount of insect protein added is in the range of 5%-15%, and the amount of spirulina protein added is in the range of 3%-10%. When adding insect protein and spirulina protein, attention should be paid to selecting high-quality raw materials and processing them to improve their palatability and digestibility. S3.

2. Such milk replacers can better help lambs to smoothly pass the weaning period and reduce the impact of weaning stress on lambs. Weaning stress refers to the physiological and psychological stress caused by environmental changes and dietary changes during the weaning process. Milk replacers with added insect protein and spirulina protein provide richer nutrition, enhance the immunity and anti-stress ability of lambs, and reduce the impact of weaning stress on lambs. S3.

3. During the weaning process, a comfortable environment and exercise space should be provided to reduce the impact of weaning stress on lambs. Regular health checks should be conducted to closely observe the behavior and health of lambs to identify and deal with problems in a timely manner.

7. The method for ultra-early weaning of lambs according to claim 6, characterized in that: In S1.1, the lambs are placed in a special nursery pen, the temperature of which is maintained at 20-25° C. and the humidity at 50%-70%.

8. The method for ultra-early weaning of lambs according to claim 6, characterized in that: In S1.2, when lambs have indigestion, the proportion of breast milk is increased by 10%-20% and the proportion of milk replacer is reduced by a corresponding amount.

9. The method for ultra-early weaning of lambs according to claim 6, characterized in that: In S2.5, when the lambs show loss of appetite, the proportion of milk replacer is reduced by 10%-20% and some easily digestible feed is added.

10. The ultra-early weaning method for lambs according to claim 6, characterized in that: The S3.3 provides a comfortable environment with a temperature maintained at 20-25°C, a humidity of 50%-70%, and exercise space, with each lamb having an activity area of ​​no less than 1-2 square meters.

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