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Effects of early intervention of Clostridium butyricum on intestinal flora and short chain fatty acids in broilers

Effects of early intervention of Clostridium butyricum on intestinal flora and short chain fatty acids in broilers

This experiment was conducted to study the effects of early intervention of Clostridium butyricum (Clostridium butyricum) on intestinal short-chain fatty acids (SFAs) and flora structure of Enterotoxigenic Escherichia coli (ETEC) in broilers. 200 1-day-old ROSS broilers were selected and divided into two groups, 100 in each group. Three days before the experiment, one group was fed with 1mL of Clostridium butyricum with a concentration of 109 CFU/mL every day, and the other group was fed with 1mL of normal saline. At 7 days of age, broilers fed with saline were divided into control group (Control) and E. coli group (EC). Broilers fed with Clostridium butyricum were divided into Clostridium butyricum group (CB) and Clostridium butyricum E. coli group (CB EC). From the age of 7 days to the end of the experiment, EC group and CB EC group were fed with 1mL(108 CFU/mL) enterotoxigenic E. coli solution for challenge, while Control group and CB group were fed with 1mL normal saline. Slaughter sampling at 3d and 7d after ETEC challenge. The results showed that: ① In the caecum of broilers, at the age of 10 days, compared with the Control group, the acetic acid content in CB group was significantly increased (P<0.01), and the acetic acid content in EC group was significantly decreased (P<0.05). The content of butyric acid in CB group and CB EC group is relatively similar, and is significantly higher than that in Control group and EC group (P<0.01). At 14 days of age, compared with Control group, the contents of acetic acid, propionic acid, butyric acid and isobutyric acid in CB group were significantly increased (P<0.05), while those in EC group were significantly decreased (P<0.05). ②At the age of 10 days, in the CB group, the relative abundance of rumen cocci was the highest, which was significantly higher than that of the other experimental groups (P<0.05). It can be seen that the early intervention of Clostridium butyricum in broilers can promote the production of intestinal short-chain fatty acids and improve the structure of cecal flora to a certain extent. The full text has been published in the 11th issue of Feed Industry in 2021.

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One article to take you to quickly understand the poultry heat stress!

One article to take you to quickly understand the poultry heat stress!

Heat stress is the sum of non-specific responses of humans or animals to stimuli that exceed their own thermoregulatory capacity. The chicken is a warm-blooded animal with its own isothermal zone. The comfort zone of laying hens is 13 ℃ ~ 27 ℃, and the ambient temperature of maximum feed efficiency is 24 ℃ ~ 27 ℃. The maximum growth rate of broilers is 10 ℃ ~ 22 ℃, and the best feed efficiency is 27 ℃.

29

2022

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07

How should egg prices go when laying hens store PK feed costs?

How should egg prices go when laying hens store PK feed costs?

In the first half of this year, the average monthly price of eggs in the main producing areas generally showed an "N"-shaped trend and was at a historically high level. Throughout the first half of this year, the increase in egg prices was mainly driven by the strong supply side, and during this period, the price was affected by the superimposed demand. Seasonal decline in February and June.

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2022

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07

2022 white feather chicken industry chain research: the first half of the first suppression and then rise, climbing to witness the scenery.

2022 white feather chicken industry chain research: the first half of the first suppression and then rise, climbing to witness the scenery.

White feather chicken is the most important chicken consumption species in China, and its breeding efficiency is high. The breeds of broilers in China include: white feather chicken, yellow feather chicken, eliminated layer chicken and soil miscellaneous chicken. At present, the main broiler varieties in China are white feather chickens, the current ancestral white feather chickens in China are mainly divided into 5 varieties, Kebao 308 accounted for the largest proportion. According to data from the Poultry Industry Branch of the China Animal Husbandry Association, the current white feather chickens in China mainly include AA, Ross 308, Cobb (Cobb), Hubbard (Hubbard) and Shengze 901. The main breeding areas are concentrated in Shandong and Liaoning. Determined by factors such as the proximity of the breeding area to the feed raw material production area, the large-scale farms, the climatic conditions and geographical environment suitable for breeding, the breeding of white feather chicken commercial broilers is mainly concentrated in Shandong, Hebei, Jiangsu, Liaoning, Henan, Fujian and other places, the main large-scale breeding area of white feather chicken is also the main production area of related food processing enterprises.

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2022

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06

Recent domestic feed raw material price trend analysis

Recent domestic feed raw material price trend analysis

Corn prices continue to adjust. At present, the rhythm of grain sales in the main producing areas is gradually stable, traders hoarding grain cost is high on the price reduction is more resistant, processing enterprises procurement mentality is loose, market purchases and sales tend to be stable. In June, corn stocks in major domestic producing areas will continue to decline, and the main grain sources will be further transferred to traders' warehouses. Demand-side farming market consumption will grow further, traders bullish sentiment is still strong, the willingness to stand price is still strong. According to analysis: in June, the corn market will continue to be in a state of overall balance between supply and demand, and the demand for guaranteed supply will continue to grow slowly. The supply and demand market still lacks the power to promote the sharp and rapid rise of the market. It is predicted that most of the time in June, corn prices will continue to rise slowly, and the possibility of short-term correction in local markets still exists. The probability of monthly average prices in major producing areas continuing to rise slightly from the previous month is still higher.

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