Ogawa Natália Nami, Silva Giovanna Lima, Barbon Ana Paula Ayub da Costa, Flaiban Karina Keller Marques da Costa, Silva Caio Abercio da, Rocha Luiene Moura, Bridi Ana Maria
Departament of Animal Science, State University of Londrina (UEL), Rodovia Celso, Garcia Cid PR 445 km 380, Londrina 86057-970, Brazil.
Departament of Preventive Veterinary Medicine, State University of Londrina (UEL), Rodovia Celso, Garcia Cid PR 445 km 380, Londrina 86057-970, Brazil.
Animals (Basel). 2024 Feb 23;14(5):700. doi: 10.3390/ani14050700.
The study aimed to investigate the physiological and meat quality differences between Non-Ambulatory, Non-Injured (NANI), and without apparent abnormalities (non-NANI) pigs in a commercial slaughterhouse setting, focusing on the impact of stress and health conditions on the overall well-being and meat quality of the animals. A total of 241 surgically castrated crossbred male pigs from Southern Brazil were analyzed, with 131 non-NANI pigs and 110 NANI pigs. Infrared orbital temperature, rectal temperature, hematological parameters, and meat quality measurements were collected. Statistical analysis included ANOVA tests and principal component analysis (PCA). NANI pigs exhibited significantly higher infrared orbital temperatures and rectal temperature ( < 0.01). Hematological analysis revealed higher levels of hemoglobin, hematocrit, and red blood cells in NANI pigs ( < 0.05). White blood cell count and lactate dehydrogenase were significantly elevated in NANI pigs ( < 0.01), indicating potential infections or inflammatory responses. Meat quality parameters showed that NANI pigs had lower pH values, higher luminosity, and increased drip loss ( < 0.01), reflecting poorer water retention and potential muscle glycogen depletion. The study highlights the physiological and meat quality differences between NANI and non-NANI pigs, emphasizing the impact of stress, health conditions, and handling procedures on the animals. Blood biomarkers proved valuable in assessing physiological stress, immune response, and potential health issues in pigs, correlating with meat quality abnormalities. Utilizing these biomarkers as predictive tools can enhance animal welfare practices and contribute to improving meat quality in the swine industry.
该研究旨在调查商业屠宰场环境下非行走、未受伤（NANI）猪与无明显异常（非NANI）猪之间的生理和肉质差异，重点关注应激和健康状况对动物整体健康和肉质的影响。对来自巴西南部的241头手术阉割的杂交公猪进行了分析，其中131头为非NANI猪，110头为NANI猪。收集了红外眼眶温度、直肠温度、血液学参数和肉质测量数据。统计分析包括方差分析测试和主成分分析（PCA）。NANI猪的红外眼眶温度和直肠温度显著更高（<0.01）。血液学分析显示，NANI猪的血红蛋白、血细胞比容和红细胞水平更高（<0.05）。NANI猪的白细胞计数和乳酸脱氢酶显著升高（<0.01），表明可能存在感染或炎症反应。肉质参数表明，NANI猪的pH值较低、亮度较高且滴水损失增加（<0.01），反映出保水性较差和潜在的肌肉糖原消耗。该研究突出了NANI猪和非NANI猪之间的生理和肉质差异，强调了应激、健康状况和处理程序对动物的影响。血液生物标志物被证明在评估猪的生理应激、免疫反应和潜在健康问题方面很有价值，与肉质异常相关。将这些生物标志物用作预测工具可以加强动物福利实践，并有助于提高养猪业的肉质。
