— The Openherd Team

AVC Livestock Appraisals

Who says you can't buy love?

Lisa Shimeld and Brad Johnson
OFredericksburg, TX 78624

Vertical versus Horizontal Transmission of Infectious Diseases

1. Vertical transmission (AKA mother-to-child transmission or perinatal transmission)

Transmission of an infection from the parental generation to their offspring. This can occur in utero or immediately after birth (ingestion of breast milk or direct contact during or after birth).


Syphilis –Bacterial disease (STI) that can be transmitted across the placental barrier to the fetus during primary or secondary stages of the disease.

BVDV – Viral disease of significant economic... Full article >

Alpaca Husbandry - Ear Ticks

Control of ear ticks in alpacas

Alpaca Husbandry: Ear Ticks

Lisa Shimeld – Alpacas del Valle Cereza

Ear ticks are relatively common in alpacas and the consequences of these infections are potentially serious. Ticks are divided into two groups: hard-bodied and soft-bodied. They are classified in the phylum Arthropoda and class Arachnida which also includes scorpions, spiders and mites. There are over 800 species of ticks of which about 100 are economically significant. Members of class Arachnida have bodies comprised of t... Full article >