Publications by authors named "C R Richey"
Differential Age-Based Response Induced by a Commercial Probiotic Supplementation in Pastured Goats.
Probiotics Antimicrob Proteins
August 2024
The potential benefit of probiotics in small ruminant production systems has largely been unexplored. We evaluated the effect of a goat commercial probiotic on health and performance indicators in pastured goats from birth until 10 months. We randomly allocated 26 newborn nursing goat kids to two groups: a control group that received saline and a treatment group that received a commercial probiotic paste orally.
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- The study aimed to identify the presence of Lactococcus petauri, L. garvieae, and L. formosensis in fish and environmental samples near a fish farm outbreak in California during 2020, and compare their virulence in different fish species.
- Researchers isolated Lactococcus spp. using bacterial culture methods and detected their DNA through quantitative PCR in various fish tissues and environmental samples from four lakes.
- Results showed Lactococcus garvieae in Largemouth Bass and indicated that Rainbow Trout infected with L. petauri had high mortality rates, while Largemouth Bass did not show infection symptoms, highlighting the use of qPCR for monitoring and variances in bacterial virulence.
Background: Maternal and fetal concerns have prompted a significant reduction in general anesthesia (GA) use for cesarean delivery (CD). The obstetric comorbidity index (OB-CMI) is a validated, dynamic composite score of comorbidities encountered in an obstetric patient. We sought to estimate the association between OB-CMI and odds of GA vs.
View Article and Find Full Text PDFPiscine lactococcosis is an emergent bacterial disease that is associated with high economic losses in many farmed and wild aquatic species worldwide. Early and accurate detection of the causative agent of piscine lactococcosis is essential for management of the disease in fish farms. In this study, a TaqMan quantitative polymerase chain reaction (qPCR) targeting the 16S-23S rRNA internal transcribed spacer region was developed and validated.
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- * The study identified four genetic groups (GGs) of F. columnare, with GG1 being the most common, found in a majority of the samples, while GG3 was less prevalent.
- * The findings highlight the genetic variability of F. columnare and suggest potential impacts on fish health management, providing a foundation for future research aimed at reducing disease-related losses.