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Guan LZ, Zhao S, Shu G, Jiang QY, Cai GY, Wu ZF, Xi QY, Zhang YL. β-Glucanase specific expression in the intestine of transgenic pigs. Transgenic Res 2019; 28:237-246. [PMID: 30697646 DOI: 10.1007/s11248-019-00112-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 01/22/2019] [Indexed: 11/25/2022]
Abstract
Producing heterologous enzymes in the animal digestive tract to improve feed utilization rate is a new research strategy by transgenic technology. In this study, transgenic pigs specifically expressing β-glucanase gene in the intestine were successfully produced by somatic cell nuclear transfer technology in order to improve digestibility of dietary β-glucan and absorption of nutrients. The β-glucanase activity in the intestinal juice of 4 transgenic pigs was found to be 8.59 ± 2.49 U/mL. The feeding trial results showed that the crude protein digestion of 4 transgenic pigs was significantly increased compared with that of the non-transgenic pigs. In order to investigate the inheritance of the transgene, 7 G1 transgenic pigs were successfully obtained. The β-glucanase activity in the intestinal juice of 7 G1 transgenic pigs was found to be 2.35 ± 0.72 U/mL. The feeding trial results showed the crude protein digestion and crude fat digestion were significantly higher in 7 G1 transgenic pigs than in non-transgenic pigs. Taken together, our study demonstrated that the foreign β-glucanase expressing in the intestine of the transgenic pigs could reduce the anti-nutritional effect of β-glucans in feed. In addition, β-glucanase gene could be inherited to the offsprings and maintain its physiological function. It is a promising approach to improve feed utilization by producing transgenic animals.
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Affiliation(s)
- Li-Zeng Guan
- College of Agriculture and Forestry Science, Linyi University, Shuangling Road, Linyi City, China
| | - Shuai Zhao
- National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, SCAU-Alltech Research Joint Alliance, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, China
| | - Gang Shu
- National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, SCAU-Alltech Research Joint Alliance, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, China
| | - Qing-Yan Jiang
- National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, SCAU-Alltech Research Joint Alliance, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, China
| | - Geng-Yuan Cai
- National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, SCAU-Alltech Research Joint Alliance, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, China
| | - Zhen-Fang Wu
- National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, SCAU-Alltech Research Joint Alliance, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, China
| | - Qian-Yun Xi
- National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, SCAU-Alltech Research Joint Alliance, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, China.
| | - Yong-Liang Zhang
- National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, SCAU-Alltech Research Joint Alliance, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, China.
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