CN-121986877-A - Diversified protein feed for dairy cows in perinatal period and preparation method thereof

CN121986877ACN 121986877 ACN121986877 ACN 121986877ACN-121986877-A

Abstract

The invention relates to the technical field of perinatal dairy cow feeds, and particularly provides a diversified protein feed for perinatal dairy cows and a preparation method thereof. The method comprises the steps of sequentially screening, crushing, mixing and tempering raw materials to output pelleting raw materials, respectively obtaining the temperature of a press roller and the temperature of a grain outlet in a ring mold granulator, adjusting the maximum feeding amount of the ring mold granulator based on the temperature difference between the temperature of the press roller and the temperature of the grain outlet, determining the deformation amount of the raw materials for testing according to the temperature difference, estimating the loss amount of extrusion speed based on the deformation amount of the raw materials for testing, obtaining the actual extrusion speed of the grain outlet, and sequentially cooling, drying and packaging feed particles to output diversified protein feed for dairy cows in the perinatal period. The invention improves the forming accuracy of the feed pellets.

Inventors

WANG DIAN
XU YIMING
LIU HONGKAI
WANG CHENGQIANG
LI YINGLI
ZHANG MENGEN
DU HONGSHENG
ZHOU KE
LAN RUBING
MA GUOQIANG
LI GUODONG
XIE FEI

Assignees

内蒙古优然牧业有限责任公司
内蒙古牧泉元兴饲料有限责任公司

Dates

Publication Date: 20260508
Application Date: 20260214

Claims (10)

1. The preparation method of the multi-element protein feed for the dairy cows in perinatal period is characterized by comprising the following steps: sequentially screening, crushing, mixing and tempering the raw materials to output pelletization raw materials; Selecting a test raw material from the granulating raw materials, and placing the test raw material into a ring mold granulator to perform extrusion granulating test on the granulating raw materials; Respectively acquiring the temperature of a compression roller and the temperature of a granule outlet hole in the ring die granulator; Adjusting the maximum feeding amount of the ring die granulator based on the temperature difference value between the temperature of the press roller and the temperature of the granule outlet; Determining deformation of the raw material for testing according to the temperature difference value, and estimating the extrusion speed loss based on the deformation amount of the raw material for testing; obtaining the actual extrusion speed of the particle outlet; Determining a rotation mode of the ring mold according to the speed difference value of the actual extrusion speed and the estimated extrusion speed loss; Acquiring the thickness of the cutter at the moment when the speed difference value triggers the abnormal state; Determining the linear distance between the cutter and the ring mould according to the thickness; Performing actual extrusion pelletization on the pelletization raw materials according to the maximum feeding amount, the rotation mode of the ring die and the linear distance so as to output feed pellets; and (3) cooling, drying and packaging the feed particles in sequence to output the diversified protein feed for the dairy cows in the perinatal period.
2. The method for preparing a multi-component protein feed for perinatal cows of claim 1, wherein the adjusting the maximum feed amount of the ring mold granulator based on the temperature difference between the temperature of the press roll and the temperature of the grain outlet comprises: Calculating the temperature difference according to the temperature of the press roller and the temperature of the granule outlet; comparing the temperature difference with a preset temperature difference If the temperature difference is larger than the preset temperature difference, judging that the deformation risk of the raw materials for testing exceeds an allowable range, and reducing the maximum feeding amount of the annular die granulator; Wherein the maximum feed rate is inversely related to the temperature difference.
3. The method for preparing a multi-component protein feed for perinatal cows of claim 2, wherein the temperature difference is a difference between the temperature of the press roller and the temperature of the grain outlet.
4. The method for preparing a multi-component protein feed for perinatal cows of claim 3, wherein the estimated extrusion speed loss is the product of the deformation of the test material and the extrusion speed conversion coefficient, and the deformation of the test material is the product of the temperature difference and the deformation conversion coefficient.
5. The method of preparing a multi-component protein feed for perinatal cows of claim 4, wherein determining the rotation pattern of the ring mold based on the difference between the actual extrusion speed and the estimated loss of extrusion speed comprises: comparing the speed difference value with a preset speed difference value; if the speed difference value is smaller than or equal to the preset speed difference value, judging that the influence degree of burrs in the particle holes is not in accordance with the requirement, and adjusting the rotation mode from clockwise rotation to anticlockwise rotation; wherein the duration of the counter-clockwise rotation is inversely related to the speed difference.
6. The method for preparing a multi-component protein feed for perinatal cows of claim 5, wherein the speed difference is a difference between the actual extrusion speed and the estimated extrusion speed loss.
7. The method for producing a multi-component protein feed for perinatal cows as claimed in claim 6, wherein the time at which the speed difference reaches the preset speed difference is determined as the abnormal state time.
8. The method for preparing a multi-component protein feed for perinatal cows of claim 7, wherein determining the linear distance between the cutter and the ring mould according to the thickness comprises: comparing the thickness with a preset thickness; If the thickness is larger than the preset thickness, judging that the stress interference degree of the cutter on the granulating raw material does not meet the requirement, and increasing the linear distance between the cutter and the ring die.
9. The method for preparing a multi-component protein feed for perinatal cows of claim 8, wherein the linear distance between the cutter and the annular die is in positive correlation with the thickness.
10. The multi-component protein feed for perinatal cows, which is prepared by the preparation method of the multi-component protein feed for perinatal cows, is characterized by comprising 1-3 parts of virgate wormwood herb, 3-4 parts of cape jasmine, 1-2 parts of viola philippica, 2-3 parts of cowherb seed, 1-3 parts of fructus liquidambaris, 2-4 parts of ligusticum wallichii, 5-10 parts of corn protein powder, 10-15 parts of corn, 20-25 parts of soybean meal, 1-2 parts of magnesium sulfate monohydrate, 1-3 parts of calcium hydrophosphate, 2.0-4.8 parts of rumen bypass choline and 0.2-0.6 part of sodium chloride.

Description

Diversified protein feed for dairy cows in perinatal period and preparation method thereof Technical Field The invention relates to the technical field of perinatal dairy cow feeds, in particular to a diversified protein feed for perinatal dairy cows and a preparation method thereof. Background In the prior art, a real-time monitoring and feedback mechanism for the breaking proportion of feed particles is lacking, so that the particle strength is inconsistent, the feed particles are easy to break in the transportation or feeding process, and the feed utilization rate and the milk cow intake effect are affected. The traditional preparation method does not monitor the extrusion speed, can not timely develop the problems of particle hole blocking or particle surface scratch, and influences the appearance and quality consistency of particles. The temperature difference between the press roller and the granule outlet is not used for adjusting the feeding amount in real time, and can cause local overheating or uneven cooling to influence the granule curing degree and the stability of nutritional ingredients. The rotation mode of the ring mold is single, and the production efficiency and the particle quality are not affected because of the change of the actual particle outlet state. The Chinese patent publication No. CN101731485A discloses a protein pellet feed production process for cows, which comprises the steps of weighing all the components according to the weight percentage, b, crushing, c, mixing, d, tempering, e, granulating, f, post curing, g, drying, h, granulating into pellet feeds with the particle diameter of below 4mm and the length of 1-2 times of the diameter, wherein the dry matter content is higher than 88%, the crude protein content in the dry matter is higher than 20%, the crude fiber content is lower than 18%, the stability in water of the protein pellets is higher than 5 minutes, and the loss rate is lower than 12%, thus the problems of feed preparation quality degradation caused by the fact that the surface of a compression roller is worn due to long-time operation of the compression roller and the compactness of extruded raw material strips is reduced due to the fact that part of leftover materials or worn particle ends of the granulated raw materials are attached in or near the particle outlet holes are solved. Disclosure of Invention Therefore, the invention provides a diversified protein feed for dairy cows in perinatal period and a preparation method thereof, which are used for solving the problems that in the prior art, abrasion loss occurs on the surface of a compression roller due to long-time operation of the compression roller, and the compactness of extruded raw material strips is reduced due to the fact that leftover materials or abraded particles of partial granulated raw materials are attached in or near a granule outlet. In order to achieve the above purpose, the invention provides a method for preparing a multi-component protein feed for perinatal cows, which comprises the following steps: sequentially screening, crushing, mixing and tempering the raw materials to output pelletization raw materials; Selecting a test raw material from the granulating raw materials, and placing the test raw material into a ring mold granulator to perform extrusion granulating test on the granulating raw materials; Respectively acquiring the temperature of a compression roller and the temperature of a granule outlet hole in the ring die granulator; Adjusting the maximum feeding amount of the ring die granulator based on the temperature difference value between the temperature of the press roller and the temperature of the granule outlet; Determining deformation of the raw material for testing according to the temperature difference value, and estimating the extrusion speed loss based on the deformation amount of the raw material for testing; obtaining the actual extrusion speed of the particle outlet; Determining a rotation mode of the ring mold according to the speed difference value of the actual extrusion speed and the estimated extrusion speed loss; Acquiring the thickness of the cutter at the moment when the speed difference value triggers the abnormal state; Determining the linear distance between the cutter and the ring mould according to the thickness; Performing actual extrusion pelletization on the pelletization raw materials according to the maximum feeding amount, the rotation mode of the ring die and the linear distance so as to output feed pellets; and (3) cooling, drying and packaging the feed particles in sequence to output the diversified protein feed for the dairy cows in the perinatal period. Further, the adjusting the maximum feeding amount of the ring die granulator based on the temperature difference between the temperature of the press roll and the temperature of the granule outlet comprises: Calculating the temperature difference according to the temperature of the press