الإثنين 23 سبتمبر 2024

Ways to Think Like a Parasite

موقع أيام نيوز

deworming horses is not working so what should you do?
Work with your veterinarian to develop a program that works for your farm at the same time reducing reliance on deworming products that can lead to resistant parasites. To develop an effective program it is necessary to understand the parasites that you want to control in other words it is necessary to think like a parasite
1. If you are a parasite... Your number one goal is to produce thousands of eggs. Relatively speaking very few parasites are actually in the horse. The vast majority of worms are on the pastures. The goal of a deworming program should not be to just kill parasites in the horse. The major goal should be to reduce shedding of eggs on pastures where they can contaminate many horses. It is especially important to prevent shedding of eggs on pastures in early spring to reduce the potential for seasonlong increases in parasite concentrations.
مع وصول أونصة الذهب إلى مستويات قياسية تجاوزت 2500 دولار، يجد المواطن المصري نفسه مضطراً لموازنة استثماراته بين الذهب واحتياجاته الأخرى، خاصة مع ارتفاع أسعار السيارات مثل تويوتا، هيونداي، وبي إم دبليو، مما يزيد من التحديات المالية التي يواجهها.
2. If you are a parasite... You will be found in greatest numbers in horses that have poor immunity to you. Most horses have some level of immunity to small strongyles and shed very few eggs. It is estimated that 20 to 30 percent of the horses on farms produce 80 percent of the eggs. It is important to conduct fecal egg counts to determine which horses carry large parasite burdens and develop a management plan that prevents them from shedding eggs on pastures.
3. If you are a parasite... You will have developed strategies to survive adverse conditions in the environment. Warm wet conditions are necessary for the development of larvae that can infect horses. Hot dry conditions were previously thought to be the enemy of parasites. However research conducted by Dr. Michael Sukhdeo of Rutgers University has shown that small strongyles can actually survive very hot dry conditions by dehydrating. In this state the worms are brittle use very little energy and can survive long periods in the pasture. They cannot infect a horse in the dehydrated stage but will rehydrate when rain returns. When a drought is broken large numbers of infectious stage parasites may become viable in pastures. Dragging pastures in summer will just serve to spread these dehydrated parasites. Parasites can survive in the infectious stage at temperatures of seven to thirty degrees Celsius. Eggs can hatch and develop into infectious stage larvae in three to five days at temperatures