Publications by authors named "David Edache"
Article Synopsis
- The study explores how maternal energy restriction during different gestational periods affects the ovarian and cardiovascular development of female calves.
- The research involved feeding Holstein-Friesian heifers at different energy levels and measuring the impact on calf growth and ovarian traits, finding impaired ovarian development in restricted groups.
- Interestingly, while maternal energy restriction altered ovarian development, it did not affect the cardiovascular health of the offspring, suggesting specific critical windows for reproductive programming.
Article Synopsis
- The study aimed to evaluate the impact of a direct-fed microbial (DFM) supplement on the presence and levels of E. coli O157:H7 in cattle feces across 20 feedlots in Nebraska, comparing those that used DFM to those that did not.
- A total of 1,320 fecal samples were collected over a 12-week period, revealing a mean within-pen prevalence of E. coli O157:H7 to be 13.5%, with higher prevalence rates noted in no-DFM pens during the peak sampling month.
- Key factors affecting fecal E. coli O157:H7 prevalence included the use of DFM, the month samples were taken, average pen body weight, and
The study was conducted to determine the proportion and concentration of enterohemorrhagic (EHEC) O157 and six non-O157 (O26, O45, O103, O111, O121, and O145) serogroups and identify seasonal and processing plant differences in feces and on hides of cull dairy cattle processed in commercial slaughterhouses in the United States. Approximately 60 rectal and 60 hide-on samples from matched carcasses were collected in each of three processing plants, in two periods; summer of 2017 and spring of 2018. Samples before enrichment were spiral plated to quantify EHEC, and postenriched samples underwent culture methods that included immuno-magnetic separation, plating on selective media, and PCR assays for identification and serogroup confirmation of putative isolates.
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