Publications by authors named "T P Short"
On 3 large California dairies, 415 lactating cows with nonsevere clinical mastitis (CM) and infected with gram-negative (GN) bacteria were randomly assigned to 1 of 3 treatment groups: nontreated control (CON; 135 cases), 2 d of ceftiofur HCl (SP2; 133 cases), or 5 d of ceftiofur HCl (SP5; 147 cases). Bacteriological cure, clinical cure, mastitis recurrence, culling or death, and overall treatment success differed among treatment groups. Although duration of milk withheld due to mastitis therapy was higher for SP5 (9.
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- Genetic selection for productive longevity (PL) in beef cattle is essential for improving profitability in beef cow-calf operations, and this study aimed to create a model for predicting genetic merit for PL using large datasets.
- The research utilized extensive pedigree and phenotype data, as well as genotypic information, to fit statistical models that consider various systematic and random effects that influence PL.
- Results indicated that while heritability estimates for PL were low, suggesting environmental factors play a significant role, a repeatability model (REP) proved more efficient than a random regression model (RRM) in predicting PL.
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- The Gompertz-Makeham law illustrates a specific mortality pattern where death rates are stable from ages 18 to 30 and increase exponentially thereafter, and its applicability to surgical populations has not been previously analyzed.
- This study investigated a large New Zealand surgical dataset to assess the relationship between age and 1-month postoperative mortality, revealing that the law does indeed apply across various patient groups and conditions.
- Findings indicate that after age 30, there is a notable rise in mortality risk, particularly for high-risk categories, suggesting significant implications for understanding surgical risks and improving surgical risk models.
The objectives of this study were to evaluate mucosal immune responses in peripartum Holstein cows, to assess the impact of intranasal modified live viral (MLV) vaccination on mucosal immunity, and to explore the relationship between genotype and peripartum immune responses. Eighty multiparous Holstein cows were randomized to receive either: 1) intranasal MLV tri-valent viral vaccine 18-24 days prior to expected calving (DC); 2) the same vaccine within twelve hours after parturition (F); 3) vaccine at both time points (DCF), or 4) no vaccine (CON). Nasal secretions and sera were collected from all cattle pre-vaccination and on multiple days before and after calving to determine concentrations of interferon beta (IFN-beta) and IFN-gamma and bovine herpesvirus-1 (BHV-1-) and bovine respiratory syncytial virus (BRSV-) specific IgA in nasal secretions, and BHV-1 and BRSV serum neutralizing (SN) titers.
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