Effect of dietary substitution of corn with Flammulina velutipes residue on growth performance, serum biochemical indicators, slaughter performance and cecal microbiota in geese

Abstract

The experiment sought to determine the effects of substituting Flammulina velutipes residue (FVR) for corn on growth performance, serum biochemical parameters, slaughter performance and caecum microbiota of geese. One hundred and ninety-two 35old Hordobagy geese were used in this experiment, and they were divided into four groups and fed with various diets for 28 d. The geese in the control group were fed with a basal diet. The other groups substituted 12%, 24% and 32% FVR for corn in their diets, respectively. There was no significant difference in the feed/gain ratio between the addition of 12% and 24% FVR to the diet, however, these additions considerably raised final body weight, average daily feed intake, and average daily growth (p < 0.05). When 24% FVR was substituted for corn in the diet, the levels of albumin (ALB) and high-density lipoprotein cholesterol (HDL-C) dramatically rose (p < 0.05). The examination of caecal microbiota revealed that the substitution of FVR for corn greatly increased both the variety and quantity of the caecal microbiota as well as the amount of bacteria that produce short-chain fatty acids (SCFAs). In conclusion, FVR has the potential to be an effective corn replacement with a 24% acceptable substitution level.

HIGHLIGHTS

• Partial replacement of corn with Flammulina velutipes residue (FVR) can increase the average daily feed intake and final body weight of geese.

• Partial replacement of corn with 24% FVR can increase the levels of albumin (ALB) and high-density lipoprotein cholesterol (HDL-C) in goose serum.

• Partial replacement of corn with 24% FVR increases the abundance of short-chain fatty acid (SCFA) producing bacteria in the goose caecum.

Keywords:

• Flammulina velutipes residue
• growth performance
• serum protein
• lipid
• caecal microbiome

Disclosure statement

The authors declare no conflict of interest.

Author contributions

Conceptualisation, Huiying Wang and Daqian He. Data Collection, Xianze Wang, Yi Liu, Yunzhou Yang, Cui Wang and Shaoming Gong, writing – original draft preparation, G.L.; writing – review and editing, H.W. All authors have read and agreed to the published version of the manuscript.

Data availability statement

The data that support the findings of this study are available on request from the corresponding author, Daqian-He. RNA sequencing data has been uploaded to National Centre for Biotechnology Information with the accession number PRJNA935670.

Additional information

Funding

This research was funded by the Climbing Plan of Shanghai Academy of Agricultural Sciences (PG21171), SAAS Program for Excellent Research Team (2022-021) and China Agriculture Research System of MOF and MARA (CARS-42-35).