Magnesium oxysulfate-zinc oxychloride composite cement cattle and sheep lick brick and preparation method thereof

Abstract

The invention discloses a magnesium oxysulfate-zinc oxychloride composite cement lick brick for cattle and sheep and a preparation method of the magnesium oxysulfate-zinc oxychloride composite cement lick brick, and belongs to the technical field of animal feeds. The lick brick further comprises table salt, molasses powder, rapeseed meal, urea, bentonite, monocalcium phosphate, wheat bran, a trace element premix, a suspending agent, an anti-mildew agent, a radix scutellariae extract and mixing water. The water resistance and strength of the magnesium oxysulfate-zinc oxychloride composite cement as a cementing material meet normal use requirements, and meanwhile, substances in the magnesium oxysulfate-zinc oxychloride composite cement can be digested and absorbed by cattle and sheep, so that the utilization effect of the lick brick is remarkably improved, and the ineffectiveness of a traditional binding material is reduced. A pouring method is adopted for preparation, and compared with a large machine and high-strength pressure needed by a pressing method, the production cost is lower, and the manufacturing method is simpler and more convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of animal feeds, and relates to a cement-based cattle and sheep lick block rich in trace elements, in particular to a magnesium sulfate oxychloride-zinc oxychloride composite cement-based cattle and sheep lick block and a preparation method thereof. Background Art

[0002] At present, with the development of China's economy and the increasing living standards of the people, China's animal husbandry is in a crucial stage of transformation and upgrading. Taking pastoral areas as an example, the extensive free-range breeding method where cattle and sheep forage freely during the day and are supplemented with concentrated feed in the pen at night can lead to diseases or stunted growth of cattle and sheep due to lack of substances. With the continuous development of scientific breeding, herdsmen increasingly attach importance to the supplementation of nutrients during the growth process of cattle and sheep. And the cattle and sheep lick block, which is a kind of block feed processed from various nutrients, mineral elements, vitamins, etc. required by ruminants through a scientific and reasonable formula, has become an indispensable part of the growth process of cattle and sheep.

[0003] Currently, in the domestic methods for preparing lick blocks, there are still some that use silicate cement as a binder. For example, Chinese Patent (CN117694260A) discloses a nutritionally balanced composite cattle and sheep lick block and its preparation process. The salt lick block includes the following components: 150 - 200 parts of table salt, 10 - 20 parts of calcium, 10 - 20 parts of phosphorus, 10 - 20 parts of iodine, 10 - 20 parts of copper, 10 - 20 parts of zinc, 10 - 20 parts of manganese, 10 - 20 parts of iron, 10 - 20 parts of selenium, 5 - 15 parts of silicate cement, and 10 - 20 parts of binder. Chinese Patent (CN117016689A) discloses an anti-stress composite nutritional lick block suitable for grazing sheep in Xinjiang and its preparation method, which consists of the following components: 0.5 - 2 parts of the first core material, 15 - 25 parts of the second core material, 22 - 35 parts of table salt, 15 - 20 parts of magnesium sulfate, 7 - 9 parts of molasses, 7 - 12 parts of white cement, 7 - 12 parts of bentonite, 5 - 8 parts of slow-release urea, and 0 - 8 parts of stone powder. In the aforementioned patent applications, the silicate cement used as a binder contains a large amount of clinker minerals such as dicalcium silicate and tricalcium silicate, which hydrate into hydration products with extremely low solubility such as highly alkaline calcium silicate hydrate during the process of making cattle and sheep lick blocks. If cattle and sheep ingest a large amount of this alkaline substance, namely the silicate cement lick block, first, the trace elements and vitamins enveloped by the silicate cement are difficult to dissolve in the bodies of cattle and sheep, which will cause these trace elements or vitamins to be directly excreted without being digested and absorbed, reducing the utilization efficiency of the lick block and also making it difficult to achieve the purpose of supplementing trace elements and vitamins; second, the indigestible silicate cement hydration products may accumulate in the digestive systems of cattle and sheep, thus endangering the health of cattle and sheep. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a magnesium oxysulfate - zinc oxychloride composite cement cattle and sheep lick brick and its preparation method in view of the above - mentioned existing deficiencies.

[0005] To achieve the above - mentioned technical purpose, the technical solution adopted by the present invention is as follows:

[0006] A magnesium oxysulfate - zinc oxychloride composite cement cattle and sheep lick brick uses magnesium oxysulfate - zinc oxychloride composite cement as a cementing material. The lick brick also includes table salt, molasses powder, rapeseed meal, urea, bentonite, monocalcium phosphate, wheat bran, trace element premix, suspending agent, anti - mildew agent, Scutellaria baicalensis extract, and mixing water.

[0007] Further, the magnesium oxysulfate - zinc oxychloride composite cement cattle and sheep lick brick includes by mass percentage: 10 - 20% of the cementing material magnesium oxysulfate - zinc oxychloride composite cement, 20% of table salt, 6 - 18% of molasses powder, 6 - 18% of rapeseed meal, 6 - 18% of urea, 6 - 18% of bentonite, 6 - 18% of monocalcium phosphate, 2 - 12% of wheat bran, 3 - 9% of trace element premix, 0.1 - 1% of suspending agent, 0.1 - 1% of anti - mildew agent, 0.1 - 1% of Scutellaria baicalensis extract, and 3 - 9% of mixing water.

[0008] Further, the magnesium oxysulfate - zinc oxychloride composite cement is composed of 6 - 12% of magnesium oxide, 1 - 3% of zinc oxide, 2 - 4% of hydrated magnesium sulfate, and 1 - 3% of hydrated zinc chloride by mass fraction.

[0009] Further, the magnesium oxide is made by calcining magnesium - containing ore at 650 - 900 °C for 2 - 6 h, and the content of active magnesium oxide is 50 - 70%; the magnesium - containing ore is a mixture of one or two of magnesium carbonate and basic magnesium carbonate according to a mass fraction of 1:0.2 - 1; the zinc oxide is made by calcining zinc carbonate at 300 - 500 °C for 0.5 - 1 h, and the content of zinc oxide is greater than 85%; the hydrated magnesium sulfate is a mixture of one or more of magnesium sulfate monohydrate, magnesium sulfate pentahydrate, and magnesium sulfate heptahydrate; the hydrated zinc chloride is a mixture of one or two of zinc chloride monohydrate and zinc chloride tetrahydrate.

[0010] Further, the table salt is feed salt, and the content of sodium chloride is greater than 95%; the molasses powder is brown sugar molasses dry powder, and the brown sugar molasses dry powder is a powder product made by drying the molasses produced in the process of sugarcane sugar production.

[0011] The above - mentioned rapeseed meal is a by - product after extracting oil from rapeseed by pressing or leaching; the urea is feed - grade urea, and its nitrogen content is greater than 32%.

[0012] Further, the bentonite is a mixture of one or two of feed - grade sodium - based bentonite and calcium - based bentonite; the monocalcium phosphate is feed - grade monocalcium phosphate, and its calcium content is greater than 18%.

[0013] Furthermore, the suspending agent is one or a mixture of two of hydroxypropyl methylcellulose ether and carboxymethyl cellulose ether; the anti-mildew agent is one or a mixture of two of sodium diacetate and calcium propionate; the Scutellaria baicalensis extract is the active ingredient extracted from the roots of traditional Chinese medicine Scutellaria baicalensis.

[0014] Furthermore, the trace element premix is composed of ferrous sulfate heptahydrate, copper sulfate pentahydrate, basic cobalt carbonate, sodium selenite, manganese sulfate monohydrate, potassium iodide, vitamin A particles, vitamin D particles, and vitamin E micropowder. Each 1000 g of the trace element premix contains the following weights of trace element components: iron 30 - 88 g, copper 6 - 33 g, cobalt 0.3 - 0.7 g, selenium 0.4 - 0.9 g, manganese 22 - 53 g, iodine 0.3 - 1.7 g, vitamin A 2 - 4.4 g, vitamin D 0.36 - 0.78 g, and vitamin E 20 - 60 g.

[0015] A preparation method of a magnesium sulfate - zinc oxychloride composite cement cattle and sheep lick brick

[0016] Step 1: Weigh magnesium sulfate, zinc chloride, the suspending agent, the anti-mildew agent, and water respectively and mix them, and stir evenly to obtain the first mixture.

[0017] Step 2: Weigh magnesium oxide and zinc oxide respectively and add them to the first mixture and mix, and stir evenly to obtain the second mixture.

[0018] Step 3: Weigh molasses powder, rapeseed meal, urea, wheat bran, bentonite, monocalcium phosphate, salt, the slow-release agent, and the trace element premix respectively and mix them together, and stir evenly to obtain the third mixture.

[0019] Step 4: Mix the mixtures obtained in Step 2 and Step 3 together, stir evenly and pour them into a mold to prepare the lick brick. After natural curing for at least 3 days, demold and form to obtain the magnesium sulfate - zinc oxychloride composite cement cattle and sheep lick brick.

[0020] Before use, magnesium oxide, magnesium sulfate, zinc oxide, and zinc chloride are respectively put into a grinding equipment and ground into powders with a fineness of 20 - 100 meshes. Before use, molasses powder, rapeseed meal, urea, wheat bran, bentonite, monocalcium phosphate, salt, and the trace element premix are respectively put into a ball mill in the grinding equipment and ground into a fineness of 20 - 100 meshes, and then mixed evenly according to the proportion to form powders; or put them into the ball mill in the grinding equipment according to the proportion and ground into powders with a fineness of 20 - 100 meshes.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The magnesium oxysulfate-zinc oxychloride composite cement cattle and sheep lick brick of the present invention uses magnesium oxysulfate-zinc oxychloride composite cement prepared by combining magnesium sulfate, zinc chloride, magnesium oxide, and zinc oxide as the bonding material. Utilizing the excellent water solubility of the hydration products of magnesium oxysulfate-zinc oxychloride composite cement, namely basic magnesium sulfate (3Mg(OH)2·MgSO4·8H2O) and basic zinc chloride (4Zn(OH)2·ZnCl2·H2O), it can not only increase the dissolution rate of trace elements, thereby improving the nutrient absorption rate of cattle and sheep; at the same time, the magnesium, zinc, and sulfur elements in the material can all be used as the macro elements required by cattle and sheep in daily life and be fully absorbed by cattle and sheep, making the materials in the lick brick make the best use of everything.

[0023] 2. The present invention reasonably incorporates trace elements to ensure that cattle and sheep can not only intake sufficient nutrient elements but also will not cause trace element poisoning due to excessive licking. The invention is suitable for cattle and sheep of different ages to lick. By controlling the hardness of the lick brick, sheep lick about 30 g per day, and cattle lick about 100 g per day.

[0024] 3. The water solubility of magnesium oxysulfate-zinc oxychloride cement is relatively good, and the lick brick can be quickly decomposed in the bodies of cattle and sheep, thereby releasing trace elements and making it easier for cattle and sheep to absorb. At the same time, magnesium oxysulfate-zinc oxychloride cement is compatible with the bodies of animals such as cattle and sheep and will not cause harm to cattle and sheep.

[0025] 4. The present invention is prepared by the casting method. Compared with the large-scale machines and high-intensity pressure required by the pressing method, its production cost is lower and the production method is simpler.

[0026] 5. The magnesium oxysulfate-zinc oxychloride composite cement cattle and sheep lick brick of the present invention is applicable to all physiological stages of cattle and sheep and achieves the purpose of supplementing nutrient substances, mineral elements, and vitamins for cattle and sheep, thereby preventing cattle and sheep from getting sick and promoting the fattening of cattle and sheep. The test results show that for a magnesium oxysulfate-zinc oxychloride composite cement cattle and sheep lick brick rich in trace elements of the present invention, the fattening effect of cattle and sheep meets the effect requirements. The water resistance and strength of the magnesium oxysulfate-zinc oxychloride composite cement as the cementing material meet the normal use requirements. At the same time, the substances in the magnesium oxysulfate-zinc oxychloride composite cement can also be digested and absorbed by cattle and sheep, significantly improving the utilization effect of the lick brick and reducing the ineffectiveness of traditional bonding materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the preparation flow chart of a magnesium oxysulfate-zinc oxychloride composite cement cattle and sheep lick brick of the present invention.

[0028] Figure 2 It is the element precipitation amount diagram of Example 1.

[0029] Figure 3 It is the element precipitation amount diagram of Example 2.

[0030] Figure 4Element precipitation amount diagram for Example 3.

[0031] Figure 5 Element precipitation amount diagram for Example 4. Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of this application clearer and more understandable, the following describes and explains this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in this application without making creative efforts belong to the scope protected by this application.

[0033] The magnesium sulfate - zinc chloride oxychloride composite cement cattle and sheep lick block of the present invention includes table salt, molasses powder, rapeseed meal, urea, bentonite, monocalcium phosphate, magnesium sulfate, zinc chloride, zinc oxide, magnesium oxide, wheat bran, trace element premix, suspending agent, anti - mildew agent, Scutellaria baicalensis extract, and mixing water; the mass ratio of each formula component is: table salt 20%, molasses powder 6 - 18%, rapeseed meal 6 - 18%, urea 6 - 18%, bentonite 6 - 18%, monocalcium phosphate 6 - 18%, magnesium sulfate - zinc chloride oxychloride composite cement 10 - 20%, wheat bran 2 - 12%, trace element premix 3 - 9%, suspending agent 0.1 - 1%, anti - mildew agent 0.1 - 1%, Scutellaria baicalensis extract 0.1 - 1%, and mixing water 3 - 9%.

[0034] The bonding material is magnesium sulfate - zinc chloride oxychloride composite cement, which specifically includes magnesium oxide, zinc oxide, hydrated magnesium sulfate, and hydrated zinc chloride.

[0035] The hydrated magnesium sulfate is one or more of magnesium sulfate monohydrate, magnesium sulfate pentahydrate, and magnesium sulfate heptahydrate.

[0036] The hydrated magnesium sulfate is magnesium sulfate monohydrate.

[0037] The hydrated zinc chloride is one or both of zinc chloride monohydrate and zinc chloride tetrahydrate.

[0038] The hydrated zinc chloride is zinc chloride monohydrate.

[0039] The mass components of the magnesium sulfate - zinc chloride oxychloride composite cement are 6 - 12%: 1 - 3%: 2 - 6%: 1 - 3% for magnesium oxide, zinc oxide, magnesium sulfate heptahydrate, and zinc chloride monohydrate.

[0040] The magnesium oxide is made by calcining magnesium - containing ore at 650 - 900 °C for 2 - 6 h, and the mineral phases of its product include magnesium oxide, silicon dioxide, aluminum oxide, iron oxide, calcium oxide, etc. Among them, the zinc oxide content is greater than 90%, and the active magnesium oxide content is 50 - 70%.

[0041] The content of active magnesium oxide is 60 - 70%, preferably 67%.

[0042] Zinc oxide is prepared by calcining zinc carbonate powder at 300 - 500 °C for 0.5 - 1 h. The mineral phases of its product include zinc oxide, lead oxide, magnesium oxide, iron oxide, copper oxide, etc. Among them, the content of zinc oxide is greater than 99%.

[0043] Magnesium sulfate monohydrate is obtained by pulverizing magnesium sulfate heptahydrate and then dehydrating and drying it at a temperature above 200 °C for 0.5 h. The mineral phases of its product include magnesium sulfate monohydrate, sodium sulfate, magnesium carbonate, etc. Among them, the content of magnesium sulfate monohydrate is greater than 98%.

[0044] Zinc chloride monohydrate is prepared by reacting zinc oxide powder with water and hydrochloric acid, controlling the reaction temperature at 60 - 80 °C, concentrating the obtained zinc chloride solution, and cooling and crystallizing. The mineral phases of its product include zinc chloride monohydrate, iron sulfate, zinc sulfate, etc. Among them, the content of zinc chloride monohydrate is greater than 99%.

[0045] The suspending agent is one or both of hydroxypropyl methylcellulose ether and carboxymethylcellulose ether.

[0046] The suspending agent is hydroxypropyl methylcellulose ether.

[0047] The anti - mildew agent is one or both of sodium diacetate and calcium propionate.

[0048] The anti - mildew agent is calcium propionate.

[0049] The trace element premix is composed of ferrous sulfate heptahydrate, copper sulfate pentahydrate, basic cobalt carbonate, sodium selenite, manganese sulfate monohydrate, potassium iodide, vitamin A particles, vitamin D particles, and vitamin E micropowder.

[0050] For the magnesium oxysulfate - zinc oxychloride composite cement cattle and sheep lick brick, each 1000 g of the trace element premix contains the following weights of trace element components: among them, iron 30 - 88 g, copper 6 - 33 g, cobalt 0.3 - 0.7 g, selenium 0.4 - 0.9 g, manganese 22 - 53 g, iodine 0.3 - 1.7 g, vitamin A 2 - 4.4 g, vitamin D 0.36 - 0.78 g, vitamin E 20 - 60 g.

[0051] The preparation method of the cattle and sheep lick brick provided by the present invention, such as Figure 1As shown in the figure, it specifically includes the following steps: grinding and weighing all raw materials; mixing magnesium sulfate, zinc chloride, suspending agent, anti-mildew agent and water, and stirring evenly to obtain the first mixture; adding magnesium oxide and zinc oxide to the first mixture and mixing, and stirring evenly to obtain the second mixture; mixing molasses powder, rapeseed meal, urea, wheat bran, bentonite, calcium dihydrogen phosphate, salt, slow-release agent, Scutellaria baicalensis extract and premix together, and stirring evenly to obtain the third mixture; mixing the mixtures obtained in step two and step three together, stirring evenly and then pouring into a mold to prepare a lick brick; according to actual needs, different molds can be used to make lick bricks in the shapes of cylinders, cuboids or other shapes respectively; after natural curing for at least 3 days, the lick brick is demolded and formed.

[0052] The following takes specific examples to explain the technical content of the present invention:

[0053] Example 1

[0054] This example provides a sulfur-oxygen magnesium-zinc-chloride composite cement cattle and sheep lick brick rich in trace elements. Taking 100 kg of lick brick raw materials as an example, its formula consists of the following weights:

[0055] Salt 20 kg, molasses powder 10 kg, rapeseed meal 8 kg, urea 12 kg, bentonite 9 kg, calcium dihydrogen phosphate 10.5 kg, magnesium oxide 8 kg, zinc oxide 1.5 kg, magnesium sulfate 2.7 kg, zinc chloride 1 kg, wheat bran 4.8 kg, trace element premix 6 kg, Scutellaria baicalensis extract 0.2 kg, suspending agent 0.5 kg, anti-mildew agent 0.3 kg, mixing water 5.5 kg. Among them, every 1000 g of trace element premix contains the following weights of trace element components: iron 59 g, copper 19.5 g, cobalt 0.5 g, selenium 0.65 g, manganese 37.5 g, iodine 1 g, vitamin A 3.2 g, vitamin D 0.57 g, vitamin E 40 g.

[0056] The preparation method is as follows: grinding the weighed salt, molasses powder, urea, bentonite, calcium dihydrogen phosphate, magnesium sulfate, magnesium oxide, zinc chloride, zinc oxide, wheat bran in a grinding equipment to 20-100 mesh; dissolving the weighed zinc chloride, magnesium sulfate and suspending agent, anti-mildew agent in water, and stirring fully in a blender for ten minutes; adding the weighed zinc oxide and magnesium oxide to the aforementioned mixture and stirring fully for ten minutes; adding the weighed salt, molasses powder, rapeseed meal, urea, bentonite, calcium dihydrogen phosphate, wheat bran, Scutellaria baicalensis extract, trace element premix after fully mixing them into the aforementioned mixture and stirring fully for ten minutes; finally, loading the mixture of the above lick brick into a mold and waiting for the lick brick to form naturally.

[0057] Example 2

[0058] This embodiment provides a sulfur-oxygen magnesium-zinc-chloride composite cement cattle and sheep lick brick rich in trace elements. Taking 100 kg of lick brick raw materials as an example, the formula consists of the following raw materials by weight:

[0059] Table salt 20 kg, molasses powder 10 kg, rapeseed meal 8 kg, urea 12 kg, bentonite 9 kg, calcium dihydrogen phosphate 13.7 kg, magnesium oxide 6 kg, zinc oxide 1 kg, magnesium sulfate 2 kg, zinc chloride 1 kg, wheat bran 4.8 kg, trace element premix 6 kg, Scutellaria baicalensis extract 0.2 kg, suspending agent 0.5 kg, anti-mildew agent 0.3 kg, mixing water 5.5 kg; among them, every 1000 g of trace element premix contains the following trace element components by weight: iron 30 g, copper 6 g, cobalt 0.3 g, selenium 0.4 g, manganese 22 g, iodine 0.3 g, vitamin A 2 g, vitamin D 0.36 g, vitamin E 20 g. Every 1000 g of trace element premix contains the following element components by weight.

[0060] The preparation method is the same as that of Example 1.

[0061] Example 3

[0062] This embodiment provides a sulfur-oxygen magnesium-zinc-chloride composite cement cattle and sheep lick brick rich in trace elements. Taking 100 kg of lick brick raw materials as an example, the formula consists of the following raw materials by weight:

[0063] Table salt 20 kg, molasses powder 10 kg, rapeseed meal 7 kg, urea 10.7 kg, bentonite 8 kg, calcium dihydrogen phosphate 9 kg, magnesium oxide 10 kg, zinc oxide 2 kg, magnesium sulfate 4 kg, zinc chloride 2 kg, wheat bran 4.8 kg, trace element premix 6 kg, Scutellaria baicalensis extract 0.2 kg, suspending agent 0.5 kg, anti-mildew agent 0.3 kg, mixing water 5.5 kg; among them, every 1000 g of trace element premix contains the following trace element components by weight: iron 88 g, copper 33 g, cobalt 0.7 g, selenium 0.9 g, manganese 53 g, iodine 1.7 g, vitamin A 4.4 g, vitamin D 0.78 g, vitamin E 60 g.

[0064] The preparation method is the same as that of Example 1.

[0065] Example 4

[0066] This embodiment provides a sulfur-oxygen magnesium-zinc-chloride composite cement cattle and sheep lick brick rich in trace elements. Taking 100 kg of lick brick raw materials as an example, the formula consists of the following raw materials by weight:

[0067] 20 kg of table salt, 10 kg of molasses powder, 8 kg of rapeseed meal, 12 kg of urea, 8.6 kg of bentonite, 9.3 kg of monocalcium phosphate, 8.8 kg of magnesium oxide, 2 kg of zinc oxide, 3 kg of magnesium sulfate, 1 kg of zinc chloride, 4.8 kg of wheat bran, 6 kg of trace element premix, 0.2 kg of Scutellaria baicalensis extract, 0.5 kg of suspending agent, 0.3 kg of anti-mildew agent, 5.5 kg of mixing water; among them, every 1000 g of trace element premix contains the following trace element components by weight: 48 g of iron, 23 g of copper, 0.6 g of cobalt, 0.7 g of selenium, 41 g of manganese, 1.2 g of iodine, 3.5 g of vitamin A, 0.6 g of vitamin D, 50 g of vitamin E.

[0068] The preparation method is the same as that of Example 1.

[0069] Test and measurement method:

[0070] A controlled experiment was carried out in a certain city. 50 healthy lactating sheep with a body weight of about 40 kg were selected and randomly divided into two groups. The experimental group of the first group was grazing + concentrate + the lick brick of Example 1, the experimental group of the second group was grazing + concentrate + the lick brick of Example 2, the experimental group of the third group was grazing + concentrate + the lick brick of Example 3, the experimental group of the fourth group was grazing + concentrate + the lick brick of Example 4, and the control group of the fifth group was grazing + concentrate; that is, except for whether to supplement the lick brick, the other rations of the experimental group and the control group were the same. The lick brick was hung in the sheep house for the sheep to lick freely, and the daily lick amount of the lick brick and the change in body weight gain in 60 days were recorded.

[0071] 1. Test on the lickability of the lick brick: Immerse the finished lick brick completely in water for 24 hours, and test the insertion depth (mm) of the iron wire.

[0072] 2. Test on the strength of the lick brick: Use a universal testing machine to test the compressive strength (kg / cm 2 ) of the lick brick.

[0073] 3. Daily lick amount of the lick brick: Record the ratio (g) of the reduction in the mass of the lick brick to the number of licking sheep every morning.

[0074] 4. Element elution amount of the lick brick: According to the mineral composition of sheep saliva measured by McDougall in 1948. That is, add 98 g of sodium bicarbonate, 93 g of disodium hydrogen phosphate dodecahydrate, 4.7 g of sodium chloride, 5.7 g of potassium chloride, 0.4 g of calcium chloride, 0.6 g of magnesium chloride, and 5 g of carboxymethyl cellulose to every 10 liters of distilled water; finally, adjust the pH of the simulated solution to be between 7.8 - 8.4 with sodium hydroxide and dilute hydrochloric acid. For the test, a 1.75 kg cube lick brick with a side length of 10 cm was selected and completely sealed in 5 L of the simulated solution. Quantitative solutions were extracted with a pipette on the 1st, 3rd, 7th, 14th, and 28th days, and the element elution amount was measured with a plasma spectrometer. The element elution amounts of each example are asFigures 2 - 5 as shown

[0075] Table 1, Performance Comparison of Lick Bricks

[0076]

[0077] As can be seen from Table 1, the daily licking amount of sheep is controlled by salt content and lick brick strength. The daily licking amount of Example 1 is about 30 g, indicating that it meets the design requirements of the lick brick of the present invention. At the same time, its strength of about 58 kg / cm 2 can also meet the quality requirements during transportation and use.

[0078] Table 2, Influence of Supplementary Feeding Lick Bricks on Sheep Body Weight

[0079]

[0080] As can be seen from Table 2, by comparing the experimental results of Experimental Groups 1, 3, and 4 with those of the control group, the daily weight gains of sheep in Examples 1, 3, and 4 are all higher than those of the control group. By controlling the daily licking amount of sheep to 30 g, the daily weight gain of 124.25 ± 15.22 g in Example 1 is greater than that of 109.55 ± 20.32 g in Example 3 and 117.82 ± 8.55 g in Example 4 respectively, indicating that the lick brick of the present invention can meet the purpose of fattening and weight gain of sheep.

[0081] Table 3, Analysis of Element Precipitation Amount of Supplementary Feeding Lick Bricks

[0082]

[0083]

[0084] As can be seen from Table 3, as the soaking time increases from 1 day to 28 days, the precipitation amounts of copper, iron, cobalt, manganese, selenium, and iodine gradually increase, indicating that the trace elements in the lick brick of the present invention can be slowly released, avoiding sheep and cattle poisoning caused by excessive and rapid element intake while ensuring that sheep and cattle ingest sufficient elements.

[0085] The above data show that a kind of magnesium sulfate - zinc chloride composite cement cattle and sheep lick brick rich in trace elements of the present invention can achieve the purpose of fattening sheep. The magnesium sulfate - zinc chloride composite cement as a cementing material also conforms to the green and healthy breeding method. At the same time, the manufacturing method of the present invention that can be formed without pressing has a relatively low price while meeting the corresponding use requirements.

[0086] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments. Any changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and shall be included in the protection scope of the present invention.

Claims

1. A magnesium oxysulfide-zinc oxychloride composite cement cattle and sheep lick brick, characterized in that, Using magnesium oxysulfate-zinc oxychloride composite cement as the cementitious material, the lick brick further includes table salt, molasses powder, rapeseed meal, urea, bentonite, calcium dihydrogen phosphate, wheat bran, trace element premix, suspending agent, anti-mildew agent, Scutellaria baicalensis extract, and mixing water.

2. A magnesium oxysulfide-zinc oxychloride composite cement cattle and sheep lick brick according to claim 1, characterized in that, By mass percentage, it includes: 10-20% of magnesium oxysulfate-zinc oxychloride composite cement as the cementitious material, 20% of table salt, 6-18% of molasses powder, 6-18% of rapeseed meal, 6-18% of urea, 6-18% of bentonite, 6-18% of calcium dihydrogen phosphate, 2-12% of wheat bran, 3-9% of trace element premix, 0.1-1% of suspending agent, 0.1-1% of anti-mildew agent, 0.1-1% of Scutellaria baicalensis extract, and 3-9% of mixing water.

3. A magnesium sulfate - zinc oxychloride composite cement cattle and sheep lick brick according to claim 2, characterized in that ,, The magnesium oxysulfate-zinc oxychloride composite cement is composed of 6-12% by mass fraction of magnesium oxide, 1-3% of zinc oxide, 2-4% of hydrated magnesium sulfate, and 1-3% of hydrated zinc chloride. The magnesium oxysulfate-zinc oxychloride composite cement is composed of 6-12% by mass fraction of magnesium oxide, 1-3% of zinc oxide, 2-4% of hydrated magnesium sulfate, and 1-3% of hydrated zinc chloride. The magnesium oxide is made by calcining magnesium-containing ore at 650-900°C for 2-6 hours, and the content of active magnesium oxide is 50-70%; the magnesium-containing ore is a mixture of one or two of magnesium carbonate and basic magnesium carbonate according to a mass ratio of 1:0.2-1; the zinc oxide is made by calcining zinc carbonate at 300-500°C for 0.5-1 hour, and the content of zinc oxide is greater than 85%; the hydrated magnesium sulfate is a mixture of one or more of magnesium sulfate monohydrate, magnesium sulfate pentahydrate, and magnesium sulfate heptahydrate; the hydrated zinc chloride is a mixture of one or two of zinc chloride monohydrate and zinc chloride tetrahydrate.

4. A magnesium oxysulfide-zinc oxychloride composite cement cattle and sheep lick brick according to claim 1, characterized in that, The table salt is feed salt, and the content of sodium chloride is greater than 95%; the molasses powder is brown sugar molasses dry powder, and the brown sugar molasses dry powder is a powder product made by drying the molasses produced in the process of sugarcane sugar production.

5. A magnesium oxysulfide-zinc oxychloride composite cement cattle and sheep lick brick according to claim 1, characterized in that, The rapeseed meal is a by-product after extracting oil from rapeseeds by pressing or leaching; the urea is feed-grade urea, and its nitrogen content is greater than 32%.

6. A magnesium oxysulfide-zinc oxychloride composite cement cattle and sheep lick brick according to claim 1, characterized in that, The bentonite is a mixture of one or two of feed-grade sodium-based bentonite and calcium-based bentonite; the calcium dihydrogen phosphate is feed-grade calcium dihydrogen phosphate, and its calcium content is greater than 18%.

7. A magnesium oxysulfide-zinc oxychloride composite cement cattle and sheep lick brick according to claim 1, characterized in that, The suspending agent is one or a mixture of two of hydroxypropyl methylcellulose ether or carboxymethyl cellulose ether; the anti-mildew agent is one or a mixture of two of sodium diacetate and calcium propionate; the Scutellaria baicalensis extract is the active ingredient extracted from the roots of the traditional Chinese medicine Scutellaria baicalensis.

8. A magnesium sulfate - zinc oxychloride composite cement cattle and sheep lick brick according to claim 1, characterized in that, The trace element premix is composed of ferrous sulfate heptahydrate, copper sulfate pentahydrate, basic cobalt carbonate, sodium selenite, manganese sulfate monohydrate, potassium iodide, vitamin A particles, vitamin D particles, and vitamin E micropowder. Each 1000g of the trace element premix contains the following weights of trace element components: among them, iron 30-88g, copper 6-33g, cobalt 0.3-0.7g, selenium 0.4-0.9g, manganese 22-53g, iodine 0.3-1.7g, vitamin A 2-4.4g, vitamin D 0.36-0.78g, vitamin E 20-60g.

9. A preparation method of a magnesium sulfate oxychloride-zinc chloride oxychloride composite cement cattle and sheep lick brick according to any one of claims 1-8, characterized in that Step 1: Weigh magnesium sulfate, zinc chloride, suspending agent, anti-mildew agent and water respectively, mix them and stir evenly to obtain the first mixture; Step 2: Weigh magnesium oxide and zinc oxide respectively, add them to the first mixture and mix them evenly to obtain the second mixture; Step 3: Weigh molasses powder, rapeseed meal, urea, wheat bran, bentonite, monocalcium phosphate, salt, slow-release agent and trace element premix respectively, mix them together and stir evenly to obtain the third mixture; Step 4: Mix the mixtures obtained in Step 2 and Step 3 together, stir evenly, pour them into a mold to prepare a lick brick, and after natural curing for at least 3 days, demold and form to obtain the magnesium sulfate oxychloride-zinc chloride oxychloride composite cement cattle and sheep lick brick.

10. The preparation method of a magnesium sulfate oxychloride-zinc oxychloride composite cement cattle and sheep lick brick according to claim 9, characterized in that, Before use, magnesium oxide, magnesium sulfate, zinc oxide and zinc chloride are respectively loaded into a grinding equipment for grinding into powders with a fineness of 20-100 meshes. Before use, molasses powder, rapeseed meal, urea, wheat bran, bentonite, monocalcium phosphate, salt and trace element premix are respectively loaded into a ball mill for ball milling into powders with a fineness of 20-100 meshes, and then mixed evenly in proportion to form powders; or loaded into a ball mill together in proportion for ball milling into powders with a fineness of 20-100 meshes.

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