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A plant extract for promoting growth of weaned piglets and its application

A technology for weaning piglets and extracts, applied in the application, animal feed, animal feed and other directions, can solve the problems of inconvenient production and transportation, limited application and promotion, human health and environmental pollution, etc., to promote the growth of piglets and improve intestinal health. , the effect of improving efficiency

Active Publication Date: 2022-04-22
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to dietary antigen allergy, lack of nutrient factors, feeding management and stress factors, piglets often have decreased appetite, slow growth or even stagnation, and low feed utilization rate after weaning.
The digestive function of piglets is incomplete, especially the weaning stress caused by weaning will cause the development of the intestinal tract to be blocked and the villi to shrink, which will lead to obstacles in the absorption of nutrients and greatly reduce the growth performance
With the improvement of intensive farming in recent years, farmers have added a large amount of antibiotics to the feed in order to improve the stress tolerance of piglets and reduce the incidence of disease. Drug resistance reduces the efficacy of drugs. On the other hand, drugs remain in feces and urine, muscles and organs, which has adverse effects on human health and environmental pollution, and seriously threatens the healthy development of the pig industry.
[0004] At present, there are a small number of research reports on the use of Chinese herbal medicines and their compound preparations in feed to improve the growth performance of weaned piglets. This type of product has the advantages of natural, no residue, and safety, but this type of product has serious limitations: most Chinese herbal medicine additives are After crushing and mixing various Chinese herbal medicines, they are directly added to the feed for feeding. However, this type of product has a large amount of addition, many types, and inconvenient production and transportation. Its quality is affected by many factors such as raw material origin and storage conditions, and the effect stability is poor. Greatly limit its commercial application and promotion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Neem leaf extract is prepared by the following method:

[0019] (1) Dry the fresh neem leaves bought in the market, pulverize them, and pass through a 60-mesh sieve to obtain dried neem leaves coarse powder.

[0020] (2) Mix neem leaf coarse powder with 80% methanol solution at a ratio of 1:10 (g / mL) to liquid, extract in an ultrasonic extraction tank for 40 minutes, control the temperature at 45°C, filter under reduced pressure, and the filtrate It was eluted three times with ethyl acetate, and the filtrate was dried in an oven at 85°C.

[0021] (3) After drying, pulverize and pass through a 60-mesh sieve to obtain the neem leaf extract, which is used in the following examples.

Embodiment 2

[0023] The individual effects of neem leaf extract on weaned piglets:

[0024] 1. Experimental animals and experimental design

[0025] In the experiment, 150 "Du×Chang×Da" triple cross weaned piglets with an average body weight of 5±0.5kg (21 days old) were selected and randomly divided into 5 groups, with 5 replicates in each group and 6 pigs in each replicate (male Mother: half and half), including a blank control group and 4 test groups. The diet of the blank control group was the basic diet, and the diets of the other four test groups were added with neem leaf extract 200g / t, 250g / t, 300g / t, and 350g / t on the basis of the diet of the control group, respectively named They are: test group 1, test group 2, test group 3 and test group 4, the test period is 15 days, and the diarrhea, flu and mental status of pigs are observed and recorded every day. During the feeding process, statistics were made on the incidence of pigs in each group. At the end of the feeding experiment...

Embodiment 3

[0046] A feed additive for promoting the growth of weaned piglets, including: 30 parts of neem leaf extract, 22 parts of plantain extract, 20 parts of pulsatilla extract, 18 parts of Houttuynia cordata extract, 5 parts of sour vine fruit extract, Astragalus extract 5 parts, parts by weight.

[0047] The preparation method of the neem leaf extract is:

[0048] (1) Dry the fresh neem leaves bought in the market, pulverize them, and pass through a 60-mesh sieve to obtain dried neem leaves coarse powder.

[0049] (2) Mix neem leaf coarse powder with 80% methanol solution at a ratio of 1:10 (g / mL) to liquid, extract in an ultrasonic extraction tank for 40 minutes, control the temperature at 45°C, filter under reduced pressure, and use Elute with ethyl acetate three times, and dry in an oven at 85°C.

[0050](3) After drying, pulverize and pass through a 60-mesh sieve to obtain the neem leaf extract, which is used in the following examples.

[0051] The feed additive prepared in ...

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Abstract

The invention belongs to the field of feed additives and specifically discloses a plant extract for promoting the growth of weaned piglets and its application. The applicant of the present invention has found that the use of neem leaf extract as a feed additive can improve the growth performance of weaned piglets, and has the ability to improve the intestinal morphology and promote the health of piglet intestinal microecology, greatly promote the growth and development of piglets, and improve the health of piglets. growth performance. Feed additives prepared by compounding neem leaf extract with plantain extract, pulsatilla extract, houttuynia cordata extract, sour vine fruit extract, and astragalus extract, which can make the active ingredients in natural extracts It is enriched and acts on the piglet body with multiple targets, and the additives used are all from natural plants, which is beneficial to reduce the use of antibiotics in the breeding process, no residue, no toxicity, no side effects, promote the growth of piglets and reduce the diarrhea rate of piglets , Improve the efficiency of the pig farm.

Description

technical field [0001] The invention belongs to the field of feed additives, in particular to a plant extract for promoting the growth of weaned piglets and its application. [0002] technical background [0003] Due to dietary antigen allergy, lack of nutrient factors, feeding management and stress factors, piglets often have decreased appetite, slow growth or even stagnation, and low feed utilization rate after a period of time after weaning. The digestive function of piglets is incomplete, especially the weaning stress caused by weaning will cause the development of the intestinal tract to be blocked and the villi to shrink, which will lead to obstacles in the absorption of nutrients and greatly reduce the growth performance. With the improvement of intensive farming in recent years, farmers have added a large amount of antibiotics to the feed in order to improve the stress tolerance of piglets and reduce the incidence of morbidity. Drug resistance reduces the efficacy of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K50/60A23K50/30A23K10/30
Inventor 黄飞若王同心姚卫磊彭鑫阳勾琴丽李圆心
Owner HUAZHONG AGRI UNIV
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