Publications by authors named "Siddartha Torres"

The objective of this experiment was to evaluate the effect on reproductive performance of a targeted reproductive management (TRM) program for first postpartum insemination (AI) that prioritized AI at detected estrus (AIE) by providing different intervals for estrus detection based on records of automated estrus alerts (AEA) during the voluntary waiting period (VWP). A secondary objective was to evaluate the association between occurrence of AEA during the VWP and reproductive performance. Lactating Holstein cows (n = 1,260) fitted with neck behavior monitoring sensors for detection of estrus were randomly assigned to a program that used all-timed AI (TAI) for first service (ALL-TAI; n = 632) or a TRM program that prioritized AIE and used TAI only for cows not detected in estrus (TP-AIE; n = 628).

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Article Synopsis
  • Fluralaner, a newly introduced treatment, was tested on taurine cattle in Brazil to control Rhipicephalus microplus ticks, which are resistant to multiple acaricides.
  • The study involved 30 infested cattle divided into two groups: one treated with fluralaner and the other as a control group receiving palliative treatment.
  • Results showed that fluralaner was highly effective (99.5% efficacy by Day 3 and 100% by Day 7) in reducing tick loads, and treated cattle gained significantly more weight compared to the control group, with no cases of myiasis observed in the treated group.
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Flunixin is a nonsteroidal anti-inflammatory drug (NSAID) that has anti-inflammatory, anti-pyretic, and analgesic effects. Recently, a novel transdermal formulation was developed (Finadyne Transdermal, MSD Animal Health) and is now the first NSAID registered to be administered as a pour-on product in cattle. According to the manufacturer's instructions, the pour-on product should be applied only to dry skin and exposure to rain should be avoided for at least 6 hr after application.

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Bovine respiratory disease (BRD) is the most costly disease affecting the cattle industry. The pathogenesis of BRD is complex and includes contributions from microbial pathogens as well as host, environmental and animal management factors. In this study, we utilized viral metagenomic sequencing to explore the virome of nasal swab samples obtained from feedlot cattle with acute BRD and asymptomatic pen-mates at six and four feedlots in Mexico and the USA, respectively, in April-October 2015.

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Objective: To compare the efficacy of gamithromycin with that of tulathromycin for the treatment of undifferentiated bovine respiratory disease complex (BRDC) in feedlot calves.

Animals: 1,049 weaned crossbred beef calves.

Procedures: At each of 6 feedlots, newly arrived calves with BRDC were administered a single dose of gamithromycin (6.

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Objective: To compare the efficacy of gamithromycin with that of tulathromycin for control of undifferentiated bovine respiratory disease complex (BRDC) in feedlot calves.

Animals: 2,529 weaned crossbred beef calves.

Procedures: At each of 2 feedlots, calves at risk of developing BRDC were administered a single dose of gamithromycin (6.

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