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CHEN Hongfei, E-mail: 2023119023@stu.njau.edu.cn
Outline
Timely identification of abnormal conditions in broiler chickens through routine inspections is a crucial means to improve the efficiency of intensive poultry farming management. In intensive poultry farming, computer vision-based inspection technologies outperform traditional manual methods in both accuracy and efficiency, showing significant potential for development. However, in large-scale farms, challenges such as multi-scale targets and occlusion pose considerable difficulties for models. To address these issues, this study proposes an improved object detection method, termed GMA-YOLO11n (GSConv and multi-scale attention YOLO11n), based on the YOLO11n (you only look once) framework. Specifically, a GSConv lightweight convolution module is introduced into the Backbone to reduce computational complexity, and a high-resolution feature layer of 160×160 is added through multi-scale feature fusion to enhance the detection of small-scale and densely distributed targets. In addition, a squeeze-and-excitation (SE) channel attention module is incorporated before multi-scale feature inputs to strengthen the representation of key features. Experimental results demonstrate that the proposed model can effectively perform multi-class detection of daily behaviors, including drinking, feeding, and walking, as well as abnormal states of broiler chickens. The model achieves mean average precision values of 93.87% and 90.45% on Dataset I and Dataset Ⅱ , respectively, both outperforming the baseline model, while maintaining an inference speed that satisfies practical video inspection requirements.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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