Hu Yaguan, Wang Kailong, Mi Wenjuan, Yu Yanli
College of Economics and Management, Ningxia University, Yinchuan, 750021, China.
College of Agriculture, Ningxia University, Yinchuan, 750021, China.
BMC Vet Res. 2025 Apr 3;21(1):243. doi: 10.1186/s12917-025-04690-3.
This study was based on a sample of 1,395 pig farmers from the fixed observation points in rural China in 2019. By applying a damage control model with an exponential distribution as the loss function, this study explored the marginal productivity of veterinary drug use among pig farmers in the four major pig - raising regions in China (the key - development region, the moderate - development region, the constrained - development region, and the potential - development region). Additionally, a binary Logit model was utilized to analyze the impacts of various factors on the excessive drug - use behavior of pig farmers in different regions. The estimation results of the damage - control model demonstrated that pig farmers in all four major farming regions had severe problems of excessive drug use. The proportions of excessive drug users in these regions were 47.4%, 66.1%, 67.2%, and 54.2% respectively. The regression results of the binary Logit model indicated that the regulatory and guiding behaviors of the government had a significant influence on the excessive drug - use behavior of pig farmers. However, the impacts differed across different regions. In moderately developed areas, part-time farming significantly inhibits excessive drug use by farmers. In potential development areas, joining agricultural cooperatives has the same effect. In restricted development areas, participating in farming training also has a significant inhibitory effect. Therefore, the government should strongly support the development of farmers' cooperatives and increase the scale and frequency of livestock training. Differentiated policies need to be formulated according to the different resource endowments in various livestock - raising regions.
本研究基于2019年中国农村固定观察点的1395名养猪户样本。通过应用以指数分布为损失函数的损害控制模型，本研究探讨了中国四大养猪地区（重点发展地区、适度发展地区、受限发展地区和潜在发展地区）养猪户兽药使用的边际生产率。此外，利用二元Logit模型分析了各种因素对不同地区养猪户过度用药行为的影响。损害控制模型的估计结果表明，四大养殖地区的养猪户都存在严重的过度用药问题。这些地区过度用药者的比例分别为47.4%、66.1%、67.2%和54.2%。二元Logit模型的回归结果表明，政府的监管和引导行为对养猪户的过度用药行为有显著影响。然而，不同地区的影响有所不同。在适度发达地区，兼业显著抑制了农民的过度用药行为。在潜在发展地区，加入农业合作社有同样的效果。在受限发展地区，参加养殖培训也有显著的抑制作用。因此，政府应大力支持农民合作社的发展，增加畜牧培训的规模和频率。需要根据各养殖地区不同的资源禀赋制定差异化政策。
