Lichtmannsperger Katharina, Hartsleben Christina, Spöcker Magdalena, Hechenberger Nicole, Tichy Alexander, Wittek Thomas
Department for Farm Animals and Veterinary Public Health, University Clinic for Ruminants, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria.
Animal Health Service Salzburg, Bundesstraße 6, 5071 Wals-Siezenheim, Austria.
Animals (Basel). 2023 May 24;13(11):1740. doi: 10.3390/ani13111740.
The objectives of this study were to evaluate factors associated with colostrum quality and FTPI in calves from dairy farms in Austria and to assess the associations between disease occurrence and FTPI in calves. In total, 250 calves and their colostrum samples originating from 11 dairy farms were included in the study. All calves born between September 2021 and September 2022 were included. Blood samples were collected between the third and the sixth day of age. The farmers were trained in disease detection and recorded any health events within the first three weeks of age daily. Multiparous cows (>3 lactation) and colostrum harvesting within the first 2 hours after parturition were significantly associated with good colostrum quality (>22% Brix). Colostrum quantity (≥2 L) and quality (≥22% Brix) acted as protective factors against FTPI (serum Brix ≥ 8.4%) with odds ratios of OR = 0.41 and OR = 0.26, respectively. Calves facing any health event (diarrhea, navel illness, bovine respiratory disease, abnormal behavior) in the first three weeks of life had a higher probability of FTPI. Calves exhibiting diarrhea in the first 3 weeks of life were associated with having FTPI (OR = 2.69). The results confirm the current recommendations for good colostrum management practices and the impact of FTPI on calf morbidity.
本研究的目的是评估奥地利奶牛场犊牛初乳质量和初乳被动免疫失败（FTPI）的相关因素，并评估犊牛疾病发生与FTPI之间的关联。该研究共纳入了来自11个奶牛场的250头犊牛及其初乳样本。所有在2021年9月至2022年9月之间出生的犊牛均被纳入。在犊牛出生后第三天至第六天采集血样。对养殖户进行了疾病检测培训，并要求他们每天记录犊牛出生后前三周内的任何健康事件。经产母牛（>3胎次）以及分娩后2小时内采集初乳与优质初乳（乳稠度>22°Bx）显著相关。初乳量（≥2升）和质量（≥22°Bx）是预防FTPI（血清乳稠度≥8.4%）的保护因素，其优势比分别为OR = 0.41和OR = 0.26。在出生后前三周内出现任何健康事件（腹泻、脐部疾病、牛呼吸道疾病、行为异常）的犊牛发生FTPI的概率更高。出生后前三周内出现腹泻的犊牛与发生FTPI相关（OR = 2.69）。研究结果证实了当前关于良好初乳管理实践的建议以及FTPI对犊牛发病率的影响。
