FOR THE BREEEDING SEASON
By Dr Colin Walker BSc, BVSc, MRCVS,
MACVSc (Avian health)
Roundworm & Hairworm
Preferred products are Moxidectin: 2mg/ml, 5ml/1L for 24 hours
Ivomec: many strengths, ensure dose delivers 10mg of active constituent
to each litre of water eg Ivomec 0.8g/1L =13mls/1L
Moxidectin is more effective against hairworm. Ensure loft is particularly
thoroughly cleaned after treatment to minimise chance of re-infection.
These medications also kill any external parasites that feed off
body fluids. They therefore kill all mites including airsac mites.
Dip or spray all birds in a synthetic pyrethroid eg Permethrin.
Preferred products contain praziquantel as the active ingredient
eg Prazivet 5ml/1L or 1/4ml to each bird. Remember tapeworms
are carried by insects. Cleaning and spraying with an insecticide
eg Permethrin onto the scraped surfaces and into the nooks and
crannies will decrease the chance or re-infection.
It is a good idea to spray the nest boxes with Permethrin prior
to pairing to decrease later problems with red mite, mosquitoes
and pigeon flies.Coccidia
If coccidia has been a loft problem the birds can be treated with
Baycox 1ml/2L for 48 hours.
There is no benefit in treating for canker prior to breeding unless
more than 10% of youngsters had canker in the previous breeding
season, or there have been significant numbers of new breeding
birds introduced shortly prior to pairing. Best time to treat
if needed is not prior to pairing but prior to hatching. Preferred
product is Turbosole 3g(1teaspoon)/2L for 3-5days. Emtril is
not appropriate to use during breeding as it interferes with
sperm production in the cocks leading to clear eggs and the increased
water intake of feeding birds can lead to toxic levels of the
drug being ingested.
Chlamydia in the breeding season causes late and irregular laying,
dead in-shell embryos and weak youngsters that die soon after
hatching. If these problems were experienced during the previous
breeding season and were diagnosed as being due to chlamydia
the birds can be treated prior to pairing with doxycycline for
7-20 days. Preferred product is Doxyvet 3g(1teaspoon)/2L. Please
note that most dead-in-shell youngsters are due to either poor
incubation by the parents or problems with temperature and humidity
within the nest box.
Do note 1. The ongoing need for provision of palatable calcium
supplements both before and during breeding .
2. Regular probiotics eg Probac 1tsp/4L, 1 or 2 days per week will
decrease bowel disease and lead to more robust young being weaned.