organic farming and alternative treatments for parasites Flashcards
animal classifications of parasite resistance
-susceptible
-resilient
-resistant
animal susceptible
-most affected by parasites
-high parasite load
-high FAMACHA score
animal resilient
-carriers of parasites, but arent affected
-medium-high parasite load
-medium-low FAMACHA score
animal resistant
-immune to parasites
-low parasite load
-medium-low FAMACHA score
parasite classifications
-susceptible
-semi-resistant
-resistant
types of chemical dewormers
-benzimidazoles
-macrocylic lactones (macrolides)
-nicotinic agonists
benzimidazoles sub classes
-fenbendazole
-albendazole
-oxfendazole
macrocylic lactones sub classes
-avermectins
-milbemycins
nicotinic agonists sub classes
-levamisole
-morantel tartrate
-pyrantel
zolvix
-99.99% effective at first but now resistance
-class: amino-acetonitrile derivatives (ADD)
how to avoid resistance in the herd
-selective deworming
-limit rotating dewormers
-give proper dosage of dewormer
selective deworming
-use FAMACHA, BCS, fecal egg count to determine who is most susceptible
- 20-30% of the herd carries 70-80% of the worms
limiting rotating dewormers
-causes resistance quicker to more classes
giving proper dosage of dewormer
-underdosing can lead to resistant parasites reproducing
-calculate dosage based on weight of individual animal or heaviest animal in the herd
-use oral dewormer instead of placing it in feed or water source
pasture management purpose
to maintain healthy herds, prevent overgrazing, allows for flourishing fields, maximized forage production so its less costly, and increases parasite load.
pasture management goals
-give cleanest pasture to most vulnerable animals
-polutry can be used to pick apart feces which its a great source of organic matter and fertilizer
-co-grazing animals benefits pasture
-goats are browsers
how long can pastures be left alone before rotating
65 days
how long should pasture grass be before rotating
most parasites are found in the first two inches
-grass should be cut at 3 inches
alternative treatments definition
-any substance used to control parasites which are not pharmaceuticals or commercially available drugs
why use natural dewormers
-cost
-availability
-sustainability
types of ORGANIC dewormers
-tannins (birds foot, serica lespedeza, sainfoin)
-pumpkin seed
-cranberry
-garlic
-nematophagous fungi
types of NATURAL dewormers
-copper
-diatomaceous earth
what are tannins
a group of polypheolic compunds found in a variety of legume and tree species
-high in protein affinity
-bitter taste
-proven to lower parasite load
what does the concentration and type of tannin depend on
-plant species
-maturation level of plant
-fresh vs. dried forage