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Crop Biotech Update

Transgenic Pigs Expressing β-xylanase Show Improved Nutrient Utilization

January 30, 2019

Scientists from South China Agricultural University and Longyan University in China developed transgenic pigs with better nutrient utilization. The results are published in Transgenic Research.

Xylan is an anti-nutritional factor present in pig's feed. To improve the digestibility of xylan and the absorption of nutrients, transgenic pigs expressing β-xylanase gene (xynB) from Aspergillus Niger CGMCC1067 in the parotid gland were developed.

Results showed that in the four live transgenic founders, β-xylanase activities in the saliva were improved. Compared with non-transgenic pigs, the content of crude protein (CP) in feces was significantly reduced and the digestibility of gross energy and CP in F1 transgenic pigs was increased. These findings show that transgenic pigs producing β-xylanase from parotid gland can reduce the anti-nutritional effect in animal diet and improve the utilization of nutrients.

Read the research article for more details.