Method for improving production performance and chicken quality of broiler chickens by using microecological preparations for broiler chickens
A micro-ecological preparation and production performance technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve problems such as lack of flavor, rough meat quality, and over-fat broiler carcasses
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Embodiment 1
[0066] Embodiment 1, the preparation of composite bacterial agent for broilers
[0067] This example relates to two kinds of composite bacterial agents for broilers, which are composite bacterial agents A for broilers and composite bacterial agents B for broilers.
[0068] Composite microbial agent A for broilers is to dilute the liquid strains of Bacillus subtilis RJGP16, Saccharomyces cerevisiae CICC1562 and Lactobacillus plantarum CICC22696 to 10 8 After cfu / ml, mix the resulting mixture according to the colony forming unit number ratio of 1:3:1.
[0069] The compound bacterial agent B for broilers is to dilute the liquid strains of Bacillus subtilis RJGP16, Saccharomyces cerevisiae CICC1562 and Lactobacillus plantarum CICC22696 to 10% respectively with sterile water. 8 After cfu / ml, mix the resulting mixture according to the ratio of the number of colony-forming units of 1:1:1.
[0070] Wherein, the liquid strain of Bacillus subtilis RJGP16 is a culture obtained by cultu...
Embodiment 2
[0074] Embodiment 2, the preparation of broiler probiotics
[0075] This example provides two kinds of probiotics for broiler chickens, respectively called probiotics A for broilers and probiotics B for broilers.
[0076] The probiotics A for broilers is a culture obtained by using the fermentation medium A of Example 1 to cultivate the composite microbial agent A for broilers of Example 1. The specific preparation method is as follows: the broiler composite bacterial agent A of embodiment 1 is inserted into the 200L embodiment according to the inoculum amount (the volume of the composite bacterial agent inserted and the volume ratio of the fermentation medium) of 6% (volume ratio). In the 500L fermenter of the fermentation medium A of 1, cultivate for 42 hours at 34°C, with an aeration rate of 600L / h and a stirring speed of 150rpm, collect all the cultured substances (fermentation liquid) in the fermenter, and add The rice husk powder was dried at 50° C. to obtain the probio...
Embodiment 3
[0078] Embodiment 3, improve broiler body weight with the broiler chicken probiotic A of embodiment 2
[0079] 1.1 Test animals
[0080]Select 12,000 1-day-old healthy chicks of Arbor Yijia-Quai large white-feathered broiler chicken with a body weight of 50±5 grams, and randomly divide them into 4 treatment groups, namely the control group, the 0.015% probiotics group, and the 0.025% probiotics group. Ecological preparation group and 0.05% probiotic preparation group. There were 3 replicates per treatment group with 1000 chickens per replicate.
[0081] 1.2 Diet
[0082] Broiler brooding period diets were divided into broiler brooding period common rations, 0.015% broiler probiotics A brooding rations, 0.025% broiler probiotics A brooding rations, 0.05% broiler probiotics A brooding rations. Among them, the common diet for broiler brooding period is shown in Table 1; 0.015% broiler chicken probiotics A brooding period diet is added to the common diet for broiler chicken bro...
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