Microbiological feed additive for adjusting energy metabolism impairment of flocks and herds during perinatal period

A technology of microbial feed and energy metabolism, applied in the field of feed additive production, can solve the problems of large selenium, low utilization rate and high bioavailability, and achieve the effects of improving production performance, increasing appetite and high potency

Active Publication Date: 2010-03-03
NANJING AGRICULTURAL UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of supplementing selenium is mainly to add inorganic selenium in the feed, but a large number of studies have shown that the utilization rate of inorganic selenium such as sodium selenite is low, and the selenium excreted by animals has a greater risk of soil and environmental pollution. Doubts about using inorganic selenium; while organic selenium has low toxicity, high absorption rate and high bioavailability, and basically does not pollute the environment within the range of the amount required for animal growth and development.

Method used

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  • Microbiological feed additive for adjusting energy metabolism impairment of flocks and herds during perinatal period

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Effect test

Embodiment 1

[0031] (1) Strains

[0032] Candida krusei (Candida krusei): purchased from China Industrial Microorganism Culture Collection and Management Center, the strain code is CICC1722.

[0033] Candida utilis (Candida utilis): purchased from the Microbial Culture Collection Center of the Institute of Microbiology, Chinese Academy of Sciences, with the strain code AS2.1180.

[0034] Streptococcus Thermophilus: purchased from the Microbial Culture Collection Center of the Institute of Microbiology, Chinese Academy of Sciences, with the strain code AS1.2471.

[0035] (2) Activation of strains and acquisition of seed solution

[0036] Slope activation medium mass ratio: Candida krusei activation medium (CM0357): 40g glucose, 2g urea, 4g yeast extract, 20g agar, 1000ml water, pH4.5, sterilized by high-pressure steam at 115°C for 15min, for later use ; Candida utilis, Streptococcus thermophilus activation medium (YPD): 20g glucose, 5g yeast extract, 10g peptone, 20g agar, 1000ml water, p...

Embodiment 2

[0049] (1) Strains

[0050] Candida krusei (Candida krusei): purchased from China Industrial Microorganism Culture Collection and Management Center, the strain code is CICC1722.

[0051] Candida utilis (Candida utilis): purchased from the Microbial Culture Collection Center of the Institute of Microbiology, Chinese Academy of Sciences, with the strain code AS2.1180.

[0052] Streptococcus Thermophilus: purchased from the Microbial Culture Collection Center of the Institute of Microbiology, Chinese Academy of Sciences, with the strain code AS1.2471.

[0053] (2) Activation of strains and acquisition of seed solution

[0054] Slope activation medium mass ratio: Candida krusei activation medium (CM0357): 40g glucose, 2g urea, 4g yeast extract, 20g agar, 1000ml water, pH4.5, sterilized by high-pressure steam at 115°C for 15min, for later use ; Candida utilis, Streptococcus thermophilus activation medium (YPD): 20g glucose, 5g yeast extract, 10g peptone, 20g agar, 1000ml water, p...

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Abstract

The invention relates to microbiological feed additive for adjusting energy metabolism impairment of flocks and herds during perinatal period, which belongs to the production field of feed additives.A preparation method of the microbiological feed additive comprises the following steps: adding inorganic selenium source into a microbial inoculum culture medium to ensure that the concentration of selenium in the culture medium is 2 to 10 mg/kg; inoculating Candida krusei, Candida valida and Streptococcus thermophilus seed liquor in the culture medium according to the ratio of 13:1:2; mixing theculture solution with the a proper amount of corn flour, and drying at 35 to 40 DEG C to obtain the feed additive. The invention adopts the principle that probiotics can convert sugar into glycerin and convert inorganic selenium into organic selenium to produce the complex probiotic product which is rich in glycerin and organic selenium, can exert the efficacies of glycerin, organic selenium andprobiotics simultaneously, can supply energy to ruminant, regulate and control the energy metabolism, adjust intestinal flora, resist pathogenic microorganism, increase appetite, enhance body immunityand disease resistance, improve the production performance, and is a safe and novel feed additive with has high value and no residual.

Description

technical field [0001] The invention relates to a microbial feed additive for regulating perinatal energy metabolism disorders of cattle and sheep, belonging to the field of feed additive production. Background technique [0002] The perinatal period of cattle and sheep refers to the late pregnancy (2 to 3 weeks before delivery) to the early lactation period (2 to 3 weeks after delivery). Since most of the sugar in ruminant diets forms volatile fatty acids during rumen fermentation, only a small amount of glucose is absorbed in the digestive tract, and the perinatal female animals undergo a series of severe physiological changes such as pregnancy and childbirth, which can easily lead to energy uptake. Insufficient income and increased consumption lead to a decrease in blood sugar concentration, which leads to energy metabolism disorders. For example, milk fever, ketosis and fatty liver occur in dairy cows, and pregnancy toxemia and ketosis occur in dairy sheep. Taking dair...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/16A23K1/18A23K10/16
Inventor 黄克和赵春燕张克春冉林武朱永兴李灵恩潘翠玲
Owner NANJING AGRICULTURAL UNIVERSITY
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