Predicting individual dry matter intake in Holstein × Gyr cows using behavior-monitoring sensor, phenotypic, and weather data with supervised machine learning [0.03%]
基于监督机器学习使用行为监测传感器、表型和天气数据预测荷斯坦× Gir奶牛的个体干物质摄入量
Camila S da Silva,Tadeu E da Silva,Anna L L Sguizatto et al.
Camila S da Silva et al.
Accurate estimation of DMI is essential for optimizing nutrition, efficiency, and economic performance in modern dairy herds. However, most existing equations to estimate DMI are designed for herd-level predictions in purebred Holstein cows...
Development of a health subindex for genetic selection of bulls and cows in Canadian dairy operations [0.03%]
加拿大乳牛场公牛和母牛遗传选育的健康子指数的研发
Douglas W Bjelland,John J Crowley,Caeli M Richardson et al.
Douglas W Bjelland et al.
This study presents the development of an updated health subindex (HSI) for genetic selection in Canadian Holstein dairy cattle, aimed at enhancing the genetic progress for health-related traits. The HSI was independently designed as part o...
Impact of timing of a second colostrum feeding on serum immunoglobulin G dynamics in calves during the first week of life [0.03%]
第二次喂初乳时间对犊牛生后第一周免疫球蛋白G动态的影响
Maximilian A E von Riedheim,Hannes Erkinger,Josef J Gross
Maximilian A E von Riedheim
This study evaluated whether a high-IgG colostrum replacer administered at 24 h postpartum (p.p.) influences IgG absorption in neonatal calves. Twelve Holstein and crossbred calves were assigned to 2 groups: CCT (n = 6) received 2.5 L of co...
Computational and modeling approaches for US threshold genetic evaluations of calving ease [0.03%]
美国难产性状遗传评定的计算和模型方法学研究
J M Tabet,M Bermann,D Lourenco et al.
J M Tabet et al.
The US dairy calving ease (CE) genetic evaluation is based on a threshold sire-maternal grandsire (SMGS) model and includes 2 genetic components: one reflecting the sire's direct genetic effect on calving, and the other capturing the matern...
L T Casarotto,F X Amaro,J M Lance et al.
L T Casarotto et al.
When trying to achieve optimum production, lactating, and dry dairy cows must be provided with relief from heat stress. The most practical and common methods to alleviate the negative effects of heat and humidity on lactating and dry dairy ...
Comparing production metrics and financial efficiency in production-limited dairy herds [0.03%]
生产限制型乳畜场的生产指标与经济效益的比较分析
C R Church,L Hayes,M W Overton et al.
C R Church et al.
This retrospective observational study examined the relationships between production metrics and financial efficiency on dairy farms operating within a production-limited system in Canada. In such a system, production quotas serve as the pr...
Potential roles of colostrum microbiota in shaping calf gut microbiota and colostrum metabolites [0.03%]
初乳微生物对塑造犊牛肠道微生物群及初乳代谢物的潜在作用
Jalyn Hawkins,Shelby Carpenter,Himani Joshi et al.
Jalyn Hawkins et al.
Colostrum provides vital nutrients and antibodies that are crucial for calf health and survival. It also contains microbes that may be vertically transmitted to calves and influence early gut microbiota development. These microbes in colost...
Heart rate and heart rate variability of dairy cows with or without local anesthesia [0.03%]
局部麻醉对 dairy cows心率和心率变异性的影响
Zs Bohák,H Kiszlinger Nagyné,F Hoffmann et al.
Zs Bohák et al.
Heart rate variability analysis provides valuable insights into autonomic nervous system function but remains minimally explored in veterinary anesthesiology, particularly regarding its relationship with low-dose caudal epidural anesthesia ...
Characterization of extracellular vesicles at parturition in dairy cows with late-gestation heat stress [0.03%]
围产期热应激对奶牛外泌 vesicles 的影响研究
L T Casarotto,H N Jones,L Galio et al.
L T Casarotto et al.
Extracellular vesicles (EV) are recognized as important mediators of cell-cell communication, capable of transferring various cargo between cells. Thus, EV are potential biomarkers of health status in heat-stressed cows. We hypothesized tha...
Fiona Louise Guinan,Robert H Fourdraine,Francisco Peñagaricano et al.
Fiona Louise Guinan et al.
The ability of an animal to be minimally affected by or bounce back rapidly from a disturbance is known as resilience. With increasing variability in climate conditions, along with skilled labor shortages and disease outbreaks, the value of...