Ackermansiella muciniphila microecological preparation and application thereof in laying hens
A technology of mucin and bacterial agents, applied in the biological field, can solve the problems of eggshell quality decline, production performance and egg quality decline, and quantity increase, so as to achieve the effect of improving egg quality and broad market application prospects
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Embodiment 1
[0066] Example 1. Preparation of Akkermansia muciniphila probiotics
[0067] 1. Preparation of live bacteria agent of Akkermansia muciniphila BAA-835
[0068] Under sterile conditions, resuspend the lyophilized powder of Akkermansia muciniphila strain BAA-835 with sterile water, suck the bacterial suspension, and put it into 1-2 Columbia blood plates. 200 μL / piece, after evenly coating, the plate was placed in an anaerobic incubator (Whitley DG250 Anaerobic Workstation, Bailai Puhui (Beijing) Technology Co., Ltd.), cultured at 37°C for 5-7 days, and the anaerobic gas composition was N 2 :CO 2 :H 2 =80:10:10, then single colonies were picked in the modified GAM liquid medium (monthly peptone 15g / L; tryptone peptone 10g / L; soybean peptone 3g / L; yeast extract powder 5g / L; beef powder 2g / L ; Digestive Serum Powder 13.5g / L; Beef Liver Extract Powder 1.2g / L; Glucose 3g / L; Potassium Dihydrogen Phosphate 2.5g / L; Sodium Chloride 3g / L; Soluble Starch 0.3g / L; L-cysteine Amino acid 0....
Embodiment 2
[0076] Example 2. Application of Akkermansia muciniphila BAA-835 live bacteria and inactivated bacteria in relieving fatty liver of laying hens
[0077] 1. Experimental method:
[0078] The model of laying hens selected in this example is: fatty liver model induced by high-energy and low-protein diet (HFD). 80 28-week-old Hailan brown laying hens (Zhuozhou Bo Nong Poultry Co., Ltd.) with similar body weight (2.010±0.10kg) were randomly divided into 4 groups: control group (ND), high-fat model group (HFD) , Akkermansia muciniphila live relief group (HFD_LA) and Akkermansia mucinophila pasteurized relief group (HFD_PA), 20 in each group. The implementation site of this example is the poultry test base of China Agricultural University (Zhuozhou, Hebei), including a pre-feeding period of 1 week and a normal feeding period of 18 weeks. All groups were fed the basal diet during the pre-feeding period.
[0079] Control group (ND): The basal diet was fed during the normal feeding p...
Embodiment 3
[0117] Embodiment 3. Application of Akkermansia mucinophilus BAA-835 freeze-dried powder on aged laying hens
[0118] 1. Experimental Design
[0119] In this example, 200 64-week-old healthy Hailan brown laying hens were selected, and blood was collected from the fin vein after fasting for 8 hours, the serum was separated, and the content of TC and TG in the serum was detected (Beijing Jinhai Keyu Biotechnology Development Co., Ltd.). According to the content of serum TC, TG and egg production rate, 140 chickens were selected and randomly divided into two groups, with 7 replicates in each group, and 10 chickens in each replicate to ensure the initial body weight of the two groups (control group: 2.17± 0.12kg; test group: 2.16±0.12kg), egg production rate (control group: 89.6±5.67%; test group: 89.6±5.48%), serum TC (control group: 3.71±0.42mmol / L; test group: 3.71 ±0.40mmol / L), TG (control group: 8.59±2.80mmol / L; test group: 8.59±2.74mmol / L) levels were consistent. The imple...
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