工业开发条件下乌克兰和红色奶牛新生品种胫骨损伤临床症状的动态变化

S. Sidashova, B. Gutyj, I. Popova, V. Shnaider, V. Zakharin, V. Honcharenko, L. Yevtukh
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引用次数: 0

摘要

本文介绍了对新创建的乌克兰红乳(URD)品种的长子(n = 1113)的5年视觉(点)检查监测数据的分析,以评估在橡胶垫上保持无鞍条件下小腿外侧表面的临床状况。腿皮肤上皮损伤(“感染通道”)的奶牛数量沿时间轴(2018 - 2022)增加,即:从33.88±3.97%增加到55.95±5.94% (P < 0.01)。胫骨关节区明显炎性(脓坏死)现象增加15.05% (P < 0.01),胫骨区各组织严重损伤症状伴跛行征由0.96±0.96%增加至4.11±0.95% (P < 0.05)。头胎婴儿shin病理症状复合物的增加动态与产奶量的增长呈正相关关系(2018年平均305天泌乳产奶量为6999.13 kg, 2020年为8947.25 kg)。然而,即使在2021年产奶量下降到7995.00公斤后,第一胎新生儿的胫骨临床损伤增加的趋势仍然存在。本研究结果分析显示,URD品种幼牛的适应特性有降低的趋势,这可能与新创造品种群体的高度荷斯坦化有关,在此过程中,基因型快速转化的负面微进化后果表现出来,这需要进一步研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamics of clinical symptoms of damage to the shin of newborn Ukraini-an red dairy breed under industrial exploitation conditions
The analysis of the data of the 5-year monitoring of the visual (in points) examination of the firstborns (n = 1113) of the newly created Ukrainian red milk (URD) breed for the assessment of the clinical condition of the lateral surface of the lower leg under the conditions of unharnessed keeping on rubber mats is presented. An increase in the number of cows with damage to the epithelium of the leg skin (“gateway of infection”) along the chronological axis (2018–22), namely: from 33.88 ± 3.97 % to 55.95 ± 5.94 % (P < 0.01). Pronounced inflammatory phenomena (purulent-necrotic) in the area of the tibial joint increased by 15.05 % (P < 0.01), and symptoms of severe damage to all tissues of the tibial area with signs of lameness increased from 0.96 ± 0.96 % to 4.11 ± 0.95 % (P < 0.05). The dynamics of the increase in the symptom complex of shin pathologies in firstborns showed a positive correlative relationship with the growth of milk productivity (in 2018, the average milk yield for 305 days of lactation was 6999.13 kg, and in 2020 – 8947.25 kg). Still, the trend of increasing clinical damage to firstborns' shins remained even after the drop in productivity in 2021 to 7995.00 kilograms of milk. The analysis of the results of the study showed a tendency to decrease the adaptive properties of young cows of the URD breed, which probably can be connected with a high degree of Holsteinization of the population of the newly created breed, during which the negative microevolutionary consequences of the rapid transformation of the genotype were manifested, which require further research.
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