CN109043156B

CN109043156B - Application of dogwood kernels in improving milk production performance of milk goats

Info

Publication number: CN109043156B
Application number: CN201810831437.8A
Authority: CN
Inventors: 李君�; 权凯; 王景伟; 王笑笑; 哈斯通拉嘎; 邓红雨; 赵金艳; 魏红芳
Original assignee: Henan University of Animal Husbandry and Economy
Current assignee: Henan University of Animal Husbandry and Economy
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2021-07-16
Anticipated expiration: 2038-07-26
Also published as: CN109043156A

Abstract

The invention discloses application of dogwood kernels in improving milk production performance of milk goats, wherein the milk production performance comprises milk production and milk components. The invention discovers the beneficial influence of the dogwood fruit kernel on the milk production performance of the milk goats for the first time, and the dogwood fruit kernel is applied to the daily feed for the goats, so that the milk yield of the milk goats can be effectively improved, and the composition proportion of short-medium chain fatty acids and polyunsaturated fatty acids in the goat milk is improved. The method solves the problem of waste of the dogwood byproduct, improves the milk production performance of the milk goat, improves the milk quality and improves the economic benefit of the milk goat breeding. The invention expands the utilization path of the dogwood kernels in the animal husbandry, achieves the win-win prospect of organically combining and combining the planting industry and the animal husbandry, and has good social and economic values.

Description

Application of dogwood kernels in improving milk production performance of milk goats

Technical Field

The invention relates to a new application of dogwood kernels, in particular to an application of dogwood kernels in improving the milk production performance of milk goats.

Background

Cornus officinalis is one of rare medicinal materials with long application history, and has important medicinal values of resisting bacteria, reducing blood sugar, reducing blood fat, enhancing immunity, resisting oxidation and the like. The dogwood kernel accounts for one third of the weight of the fruit, and contains various nutritional ingredients: 4.61% of protein, 8.56% of fat, 20.33% of sugar, 2.23% of ash, 51.62% of crude fiber and 21 mineral elements. However, only pulp of dogwood is used as a medicine at present, and the stone is almost directly discarded, which is a very large waste.

Compared with cow milk, goat milk not only has higher digestibility than cow milk, but also contains more abundant nutrients, and has high contents of protein, vitamins, minerals and total fat, and abundant beneficial fatty acid species (such as short-chain and medium-chain fatty acids, unsaturated fatty acids, conjugate acids, etc.). The protein digestibility reaches about 98 percent, is a best beverage for nutrition and health care, and has good prevention effect on human gastrointestinal diseases and the like. The goat milk has unique flavor, no allergen and complete nutrient components. Goat milk is becoming a new pet in the dairy market, and along with the expansion of the market, the living substances of people need to be more and more abundant, and the selection of milk is more and more benefited and refined. In order to develop functional health-care goat milk and reduce the waste of agricultural byproducts, the invention tries to add dogwood kernels into the daily ration of the dairy goat so as to combine the advantages of the dogwood kernels and the dairy goat and hopefully influence the properties such as milk yield, milk ingredients and the like.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the application of dogwood kernels in improving the milk production performance of milk goats.

In order to achieve the purpose, the invention adopts the technical scheme that:

application of dogwood kernels in improving milk production performance of milk goats is provided.

Milk production properties include milk production and milk content.

The milk component comprises fatty acid C4:0, C6:0, C8:0, C10:0, C11:0, C14:0, C16:0, and C18:3n 6.

Application of dogwood kernels in preparation of feed additives for milk goats is provided.

The specific method comprises the steps of crushing dogwood kernels and adding the crushed dogwood kernels into daily feed for sheep.

The weight ratio of the dogwood kernels to the daily feed for sheep is 1: 100-150.

A feed additive for improving milk production performance of milk goats is dogwood kernel.

Application of dogwood kernels in preparation of milk goat complete feed.

The specific method comprises pulverizing Corni fructus kernel, and adding into sheep daily feed.

A complete feed for improving milk production performance of milk goats comprises dogwood kernels and daily sheep feed in a weight ratio of 1: 100-150.

The invention has the beneficial effects that:

the invention discovers the beneficial influence of the dogwood fruit kernel on the milk production performance of the milk goats for the first time, and the dogwood fruit kernel is applied to the daily feed for the goats, so that the milk yield of the milk goats can be effectively improved, and the composition proportion of short-medium chain fatty acids and polyunsaturated fatty acids in the goat milk is improved. The method solves the problem of waste of the dogwood byproduct, improves the milk production performance of the milk goat, improves the milk quality and improves the economic benefit of the milk goat breeding. The invention expands the utilization path of the dogwood kernels in the animal husbandry, achieves the win-win prospect of organically combining and combining the planting industry and the animal husbandry, and has good social and economic values.

Detailed Description

The following examples further illustrate the embodiments of the present invention in detail.

1 materials and methods

1.1 design of the experiment

In the test, 50 healthy Henan milk goats with the same fetal number, the same weight (48.26 +/-1.74 kg) and similar body conditions in the prophase of lactation (the number of lactation days: 20 +/-7 days) are selected, and the body health of the goat in the test is good without any diseases. Dividing 50 test sheep into 2 groups, each group comprises 25 test sheep, and the number of fetuses, age, lactation days, lactation performance and the like of the two test sheep groups are similar. The test was carried out in a certain sheep farm in Xixia county, south Yang.

The daily feed for the experimental animals consists of corn silage, peanut seedlings, sweet potato seedlings and concentrate supplement, and the composition of the daily feed is shown in table 1. The control group is fed with daily ration according to feeding standard, and the experimental group is prepared by adding 1kg of Corni fructus kernel powder into per 100kg of daily ration, and mixing well.

Before the test, the test sheep were subjected to epidemic prevention, anthelmintic, cleaning and disinfection in the test pen, and then 2 groups of test sheep were respectively fed in 2 independent pens. The animals were fed twice daily. All sheep had free water and were free to move. The test period was 45 days.

TABLE 1 daily ration composition

1.2 index determination

(1) Milk yield

Milking was performed 2 times a day, morning and evening, and milk production data was recorded after each milking.

(2) Milk component

Milk samples were collected at the end of the experimental period, and 20mL milk samples were collected in the morning and evening of each sheep to prepare mixed samples for determination of fatty acid composition in milk.

The method for extracting fatty acid from goat milk comprises the following steps: putting the collected milk sample into a water bath kettle at the temperature of 30 ℃ for incubation for 20 minutes, then centrifuging at 17800g for 30 minutes at the temperature of 20 ℃, transferring the upper-layer fat into a 2mL centrifuge tube after centrifugation, and centrifuging at 19300g for 20 minutes; taking a 10mL glass tube to absorb 80 μ L of upper-layer oily liquid in the centrifuge tube, adding 5mL of n-hexane, shaking up and mixing; then 0.2mL of methyl esterification reagent (11.2 g of KOH dissolved in 100mL of methanol) is added into the mixture, and the mixture is sealed, vortexed and shaken for 1 minute and then is kept stand for 30 minutes at room temperature; then 0.5g of anhydrous sodium sulfate is added, and 350g of the mixture is centrifuged for 3 minutes; aspirate 1mL of supernatant into a 2mL chromatographic vial for gas chromatography determination. Determining fatty acid components by gas chromatography, and calculating the contents of various fatty acids in the goat milk by an area normalization method.

1.3 data processing

The experimental data are expressed as mean ± standard deviation, and the significance of the difference is analyzed by t-test comparing the mean of two samples by SPSS software. P <0.05 indicates significant difference, and P <0.01 indicates very significant difference.

2 results of the experiment

2.1 milk production of milk goats

The results are shown in table 2, and the average milk yield of the test group is significantly higher than that of the control group (P <0.05), which is improved by about 10%. Test results show that the milk yield of the milk goat can be obviously improved by adding the dogwood kernels into the daily ration, and the economic benefit of the milk goat is improved.

TABLE 2 milk production of test milk goats

Note: the shoulder marks of the same row indicate that the difference is significant by different lower case letters (P <0.05), the different upper case letters indicate that the difference is significant (P <0.01), and the non-marked letters indicate that the difference is not significant (P > 0.05). The following table is the same.

2.2 fatty acid composition in milk

The results are shown in Table 3, compared with the control group, the goat milk in the test group has obviously improved contents of C4:0, C6:0, C8:0, C10:0, C11:0, C14:0, C16:0 and C18:3n6 (P <0.05), the C15:1 (P <0.05) and no obvious change of contents of other fatty acids (P > 0.05). The result shows that the addition of the dogwood into the ration has the effect of improving the fatty acid composition of the goat milk, and the composition of the fatty acid easy to digest and absorb and the content of the beneficial fatty acid of the goat milk are improved.

TABLE 3 influence of the addition of cornel kernels to the fatty acids of goat milk on the daily ration

The foregoing description is only a preferred embodiment of the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The application of dogwood kernel in improving the milk production performance of milk goats comprises milk production amount and milk components, wherein the milk components comprise fatty acid C4:0, C6:0, C8:0, C10:0, C11:0, C14:0, C16:0 and C18:3n6,

crushing dogwood kernels, and adding the crushed dogwood kernels into the daily feed for sheep, wherein the weight ratio of the dogwood kernels to the daily feed for sheep is 1: 100-150.