Santinello Matteo, Diana Alessia, De Marchi Massimo, Scali Federico, Bertocchi Luigi, Lorenzi Valentina, Alborali Giovanni Loris, Penasa Mauro
Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro, VEN, Italy.
Sector Diagnostic and Animal Health, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna 'Bruno Ubertini' (IZSLER), 25124 Brescia, LOM, Italy.
Animals (Basel). 2022 Jan 4;12(1):116. doi: 10.3390/ani12010116.
Judicious antimicrobial stewardship in livestock industry is needed to reduce the use of antimicrobials (AMU) and the associated risk of antimicrobial resistance. Biosecurity measures are acknowledged for their role against the spread of diseases and the importance in reducing AMU in different species. However, their effectiveness in beef production has been scarcely considered. The aim of this study was to investigate the effect of the quarantine strategy on AMU in beef cattle. A total of 1206 Charolaise animals in five farms were included in the trial. Roughly half of the animals followed the standard procedure of the fattening cycle (no-quarantine; NO-QUA group) and half followed a 30-day period of quarantine (QUA group) since their arrival. Performance and antimicrobial data were recorded and a treatment incidence 100 (TI100it) per animal was calculated. Penicillins was the most used class of antimicrobials. Differences between groups were significant for males only, with NO-QUA group having greater TI100it (3.76 vs. 3.24; < 0.05) and lower body weight at slaughter (713.4 vs. 723.7 kg; < 0.05) than QUA group. Results suggest that quarantine strategy can reduce AMU in males without compromising their performance, whereas further investigation is needed for females.
畜牧业需要明智的抗菌药物管理，以减少抗菌药物的使用（AMU）以及抗菌药物耐药性的相关风险。生物安全措施因其在预防疾病传播方面的作用以及在减少不同物种抗菌药物使用方面的重要性而得到认可。然而，其在肉牛生产中的有效性却很少被考虑。本研究的目的是调查检疫策略对肉牛抗菌药物使用的影响。试验纳入了五个农场的1206头夏洛来牛。自到达农场后，大约一半的牛遵循育肥周期的标准程序（不检疫；无检疫组），另一半则进行30天的检疫（检疫组）。记录性能和抗菌药物数据，并计算每头牛的治疗发病率100（TI100it）。青霉素是使用最多的抗菌药物类别。仅在雄性中，两组之间存在显著差异，无检疫组的TI100it更高（3.76对3.24；<0.05），屠宰时体重更低（713.4对723.7千克；<0.05）。结果表明，检疫策略可以在不影响雄性性能的情况下减少其抗菌药物使用，而雌性则需要进一步研究。
