The effect of twice daily 3-nitroxypropanol supplementation on enteric methane emissions in grazing dairy cows.

Although 3-nitroxypropanol (3-NOP) has been proven to reduce enteric methane (CH) by ∼30% in indoor systems of dairying when the additive is mixed throughout a TMR, very limited research has been done to date in grazing systems in which the most convenient method of additive supplementation is at milking twice daily. To investigate the effect of twice daily 3-NOP supplementation on enteric CH emissions, a 12-wk study was undertaken in which treatment cows (n = 26) were supplemented with 3-NOP (80 mg/kg DMI) twice daily at morning and evening milking, and control cows (n = 26) received no additive supplementation. Enteric CH, hydrogen (H) and carbon dioxide (CO) were measured using GreenFeed units, and milk production, BW, BCS, and DMI were monitored to determine the effect of 3-NOP supplementation on productivity.

Estimating habitual iodine intake and prevalence of inadequacy from spot urine in cross-sectional studies: a modeling analysis to determine the required sample size.

Background: The habitual/usual iodine intake and the prevalence of iodine inadequacy may be estimated from spot urinary iodine concentrations in cross-sectional studies by collecting a repeat spot urine in a subgroup of the study population and accounting for within-person variability in iodine intake. However, guidance on the required overall sample size (N) and the replicate rate (n) is lacking.

Objectives: To determine the sample size (N) and replicate rate (n) needed to estimate the prevalence of iodine inadequacy in cross-sectional studies.

Identifying patients at high risk for multidrug-resistant organisms after hospitalization abroad.

Objectives: We quantified the percentage of multidrug-resistant organism (MDRO) carriers among repatriated patients. We identified factors associated with MDRO carriage, and we evaluated the yield of MDRO detection per screened body site.

Design: Retrospective cohort study.

Longitudinal increase in the detection rate of Mycobacterium chimaera in heater-cooler device-derived water samples.

Background: Colonization with Mycobacterium chimaera and other non-tuberculous mycobacteria (NTM) has been reported for heater-cooler devices (HCDs) produced by several manufacturers. Up until now, exclusively LivaNova (London, UK) HCDs have been associated with M. chimaera infections after cardiac surgery.

[Special weight percentile curves for twins].

Based on the birthweights of our data collection on 562 twins between 1970 and 1984 at the Universitäts-Frauenklinik Basle, we have worked out a special percentile curve for twins. Presented are the 10, 50 and 90-percentile curve for boys and girls. The data were calculated with 95% confidence-limits and the curves were equalized by computer.