Biosecurity Principles for Reproductive Diseases of Cattle.

This article addresses infectious reproductive diseases in cattle, which can significantly impact production and profit on cattle operations. It highlights vital biosecurity practices aimed at minimizing the introduction of reproductive pathogens into breeding herds, including the importance of maintaining records, implementing a defined breeding season, culling nonproductive animals, quarantining and testing imported livestock, and the use of vaccines to maximize herd immunity. The article focuses on economically important reproductive pathogens of cattle from a biosecurity standpoint, focusing on mitigating the introduction and impact of reproductive diseases in cattle.

Biosecurity for Reproductive Disease Prevention in Sheep and Goats.

Infectious reproductive diseases pose a significant economic threat to sheep and goat operations. Maintaining records, a defined breeding season, and recognizing deviations from normal are crucial to herd health programs. Signs of suboptimal fertility, such as repeat breeding, unexpected open females, and abnormal gestational distributions, warrant further investigation.

Exploratory application of a cannulation model in recently weaned pigs to monitor longitudinal changes in the enteric microbiome across varied porcine reproductive and respiratory syndrome virus (PRRSV) infection statuses.

Introduction: The enteric microbiome and its possible modulation to improve feed conversion or vaccine efficacy is gaining more attention in pigs. Weaning pigs from their dam, along with many routine procedures, is stressful. A better understanding of the impact of this process on the microbiome may be important for improving pig production.

Sinonasal chondrosarcoma in a llama.

A 14-y-old intact female llama () was presented for evaluation of a right maxillary swelling of 3-mo duration. Clinically, the animal had mild nasal discharge, abnormal retropulsion of the right eye, and moderate gingival disease. An incisional biopsy of the maxillary mass revealed pleomorphic and mitotically active neoplastic spindle-to-stellate cells organized in haphazard lacunae embedded in abundant chondroid matrix.

Prognostic indicators of outcome in nonambulatory beef cattle presented to 2 referral hospitals: A retrospective study of 63 cases.

Background: Down cow syndrome is commonly described in dairy cattle. The diagnosis and treatment of nonambulatory cattle is challenging and prognostic indicators of this condition in beef cattle have not been determined.

Objectives: Evaluate records of beef cattle (≥2 years of age) presented to 2 referral hospitals for inability to stand and identify prognostic indicators for survival to discharge.