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Feed for young tussah and method for preparing the feed

A technology for juvenile silkworm and feed, which is applied to the preservation method of animal feed raw materials, animal feed, animal feed, etc. Good, low morbidity outcomes

Active Publication Date: 2012-09-26
JILIN SERICULTURE SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of artificial mixed feed has defects such as high rate of food refusal, high incidence of disease, underdevelopment of juvenile silkworms, and too many variable factors.

Method used

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  • Feed for young tussah and method for preparing the feed
  • Feed for young tussah and method for preparing the feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The freeze-drying method and application of oak fresh leaves, the steps are as follows:

[0068] 1) After cleaning the fresh oak leaves with pure water, immerse them in an aqueous solution containing 15% (weight ratio) of acorn powder and a temperature of 20°C, and use ultrasonic methods ("BK- 1000B Desktop Ultrasonic Cleaner") dewaxing for 15 minutes;

[0069] 2) Sterilize by immersing in pure water containing ozone for 18 minutes;

[0070] 3) The eutectic point of oak leaf is tested by LYORESIS eutectic point tester, and the obtained data shows that the eutectic temperature F is generally -12°C-15°C below zero;

[0071] 4) The freeze dryer uses the freeze dryer for vaccines in Jilin Biological Products Factory;

[0072] 5) Put the oak leaves in a vacuum freeze dryer for pre-freezing, the pre-freezing temperature is -17°C-25°C, and the cooling rate is 2-6°C / min;

[0073] 6) Vacuum treatment: Make the air pressure in the dryer between 2.0-20Pa, preferably around 10Pa...

Embodiment 2

[0078] Comparative experiment of freeze-dried and fresh leaf substitute feed for tussah silkworm and artificial mixed feed:

[0079] One, the tussah juvenile silkworm substitute feed prepared by the preparation method of the present invention:

[0080] (1) In June 2010, in a pest-free area where silkworms were not released in 2009, 20 kg of fresh leaves of eucalyptus trees were harvested, and after freeze-drying by Jilin Biological Products Factory, 2.5 kg of dry leaves of eucalyptus leaves were obtained, which were stored in a vacuum seal;

[0081] (2) After the egg bath is disinfected, 200 eggs are taken from each moth area and put into egg bags, a total of 20 moth areas;

[0082] (3) In a sterile room, after seeing the silkworms, immerse the freeze-dried oak leaves in pure water at 18°C ​​for 2.5 hours to recover. When the rehydration rate of the leaves reaches more than 80%, take out and drain the surface water, put them into the egg bag and tie the bag tightly. About 10g...

Embodiment 3

[0094] Table 2: Relationship between concentration of aqueous solution of acorn powder after dewaxing treatment of fresh oak leaves and rehydration rate after drying:

[0095]

[0096] Result analysis: Dewaxing and drying experiments were carried out on the fresh leaves of Quercus liaotungensis and Quercus mongolica picked in different periods. The results showed that due to the difference in tree species, leaf quality, and picking time, the thickness and composition of the waxy layer on the leaf surface were different, so the time and water temperature for dewaxing were different. The rehydration effect after dewaxing depends on the coordination and unity of leaf quality, acorn powder concentration, dewaxing treatment water temperature and dewaxing treatment time. Through a large number of experiments, it is concluded that the best conditions for the best dewaxing treatment of fresh oak leaves are: the concentration of acorn powder is 15% by weight, the treatment time is 1...

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Abstract

The invention provides a feed for young tussah and a method for preparing the feed. The preparation method comprises the steps of dewaxing and then freeze-drying oak leaves. The washed oak leaves are dewaxed by an acorn powder, immersed into ozone for disinfection for 10-20 minutes, freeze-dried and put away in aseptic condition for vacuum and sealed preservation, away from light. When recovering, the prepared oak leaves are immersed into 10-18 DEG C purified water for recovery for 2-3 hours and taken out when rehydration rate of the oak leaves arrives above 80%, with surface moisture drainedoff. The invention solves the substituted feed problem for early culture of spring silkworms in China northeast tussah stocking area, and has the advantages of simple operation, good growth and low morbidity of the young silkworms, high feeding rate, low cost, etc.

Description

technical field [0001] The invention belongs to the field of tussah silkworm breeding. Specifically, the invention relates to a preparation method of tussah juvenile silkworm feed, tussah juvenile silkworm feed prepared by the method, and a recovery method of the feed. Background technique [0002] Liaoning Province, Jilin Province and Heilongjiang Province are the largest tussah silkworm breeding areas in China, and the total output accounts for more than 75% of the national output. Due to the limitation of climatic conditions and the need for breeding in spring, it is particularly important for spring silkworms to be stocked early. The use of artificial feed or substitute feed to feed the first-year-old tussah silkworm is of great significance for solving the frost damage in early spring in northern China and the low-temperature frost damage in autumn silkworm. [0003] In recent years, various research units have carried out a lot of research work on the artificial diet ...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/14A23K3/02
Inventor 李金志刘志文
Owner JILIN SERICULTURE SCI RES INST
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