Avian - Breeding Aves 0.0 / 5 ? OtherAnimal ManagementOtherOther Created by: Becky_BerryCreated on: 09-02-21 10:11 Things to Consider What species? might want to breed for specific reasons Natural Behaviour, Conservation, Specific Traits and Colours, Publicity, Money Zoos need to make money in order to not close down could allow the zoo to get grants from conservation organisations prevention of inbreeding in current stock is there a pont to breeding? inconsiderate breeding can lead to overpopulation and you may have difficulties moving offspring to new collections benefits of breeding money (e.g., conservation grants) more visitors where have the breeding animals come from? must talk to the owner of the studbook for the animal inbred stock (not from a zoo you have given animals to in the past) enclosure design and alterations animal introductions 1 of 12 Parental Care monitor the parents to make sure they are looking after young properly potential problems Abandonment animals may often get bored or distracted from sitting on eggs in captivity Stress - stopping them feeding/protecting/brooding their young Cannibalism - this may be normal behaviour for some species vultures often eat the weaker chicks so there are less chicks to look after young birds - silly mistakes fall out of nests 2 of 12 Behaviours POSITIVE Nest preparation nesting brooding vocalisation singing courtship behaviour copulation rearing young regurgitating food for young NEGATIVES Egg eating eating hatchlings abandonment of eggs partial incubation of eggs reluctance to rear altricial offspring 3 of 12 Light longer days mean more time to forage for food feed quantities increase which provide energy for egg production, mating displays, territorial defence, feeding offs breed in winter so that eggs are laid in spring when food is abundant 4 of 12 Temperature Improve success rate Too hot or too cold could be fatal to parents or eggs Increase in temperature can increase food quantities available decrease in predators 5 of 12 Breeding Seasons what can affect breeding seasons starting? what is species is renowned for breeding all year round? why have a breeding season? 6 of 12 Hormonal Activity What encourages an increase in hormonal activity? extended light hours mate availability enclosure design and enrichment dietary change nesting sites being made available 7 of 12 Hormone Production Seasonal breeding triggered by day length, rainfall and food abundance stimulate hypothalamus to release 3 gonadotropin-releasing hormones follicle-stimulating hormone (FSH) stimulates maturation of the reproductive organs and sperm production in males luteinizing hormones (LH) stimulates ovulation in females and oestrogen, testosterone production in both sexes prolactin induces broody behaviour 8 of 12 What can we provide to encourage breeding? large enclosure suitable diet good photoperiod correct social groupings nest sites and nesting materials 9 of 12 Egg Monitoring heat too high = abnormalities heat too low = weakness, small, deformities incorrect humidity = deformities weight = adults lose 15% over incubation period 10 of 12 What do we monitor after hatching? weight gain socialising with others weaning diet is adapted to suit age feather growth/appearance is normal 11 of 12 Monitoring and Recording One Note Incubation Records Posters/Forms for other staff ARKS/ZIMS Video footage Diary entries 12 of 12
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