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asc 340 exam 1 questions & answers 2024/2025

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asc 340 exam 1 questions & answers 2024/2025 hatchery - ANSWERSbuilding that is used to incubate and hatch egg laying species incubate - ANSWERSto provide heat, ventilation, humidity, and turning of fertile eggs to develop an embryo incubator (setter) - ANSWERSmechanical device that is u...

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  • September 7, 2024
  • 20
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Asc 340
  • Asc 340
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asc 340 exam 1 questions & answers
2024/2025

hatchery - ANSWERSbuilding that is used to incubate and hatch egg laying species



incubate - ANSWERSto provide heat, ventilation, humidity, and turning of fertile eggs to develop an
embryo



incubator (setter) - ANSWERSmechanical device that is used to incubate eggs



hatcher - ANSWERSmechanical device where eggs are placed during the last three days of incubation to
hatch



hatching egg - ANSWERSavian egg that is produced to create a new individual



fertile egg - ANSWERSavian egg that contains a developing embryo



infertile egg - ANSWERSavian egg that contains only a female gamete



set - ANSWERSplacing eggs in an incubator or group of eggs placed in an incubator at the same time



pipping - ANSWERSact of the chick penetrating the shell membranes and shell with its beak



(# of fertile eggs / # of eggs set) x 100 - ANSWERSpercent fertile equation



(# of eggs hatched / # of eggs set) x 100 - ANSWERSpercent hatch equation



(# of eggs hatched / # fertile eggs) x 100 - ANSWERSpercent hatch of fertile equation

,1. dirty

2. cracked

3. small

4. very large or double yolk

5. poor shells

6. grossly misshapen - ANSWERSqualities of eggs unsuitable for hatching (6)



1. storage prolongs incubation time

2. hatchability depressed by prolonged stage

3. body weights can be depressed - ANSWERSeffects of storing eggs (3)



carbon dioxide, water - ANSWERS_____ and ______ diffuses out of egg through pores during storage;
concentration declines rapidly during the first 12 hours after the egg is laid

-contributes to loss in hatchability and chick quality



1. temperature

2. humidity

3. ventilation

4. turning - ANSWERSincubator must provide (4)



single stage incubator - ANSWERSall eggs in incubator are set at the same time

-best biosecurity but least energy efficient



1. same embryonic stage

2. allows adjustments

3. improved biosecurity

4. flexibility in egg # - ANSWERSadvantages of single stage incubator (4)

, requires more management - ANSWERSdisadvantage of single stage incubator



multi stage incubator - ANSWERSeggs set at different times in incubator



1. can have six different embryonic ages

2. more energy efficient

3. simple to control/less management - ANSWERSmulti stage incubator advantages (3)



1. cannot create optimum condition

2. adjustments at fixed point - ANSWERSmulti stage incubator disadvantages (2)



1. temperature

2. age

3. size - ANSWERSfactors that affect total incubation time (3)



mouth - ANSWERSbeak, no teeth

-contains salivary glands with enzymes

-cleft palate



amylase - ANSWERSchickens and turkeys do not contain salivary ______ but sparrows do



esophagus - ANSWERStube that connects the mouth to the rest of the digestive tract



crop - ANSWERSlocated in the neck

-used to store food

-secretion of mucus that lubricates dry feed

-mixes feed with water



proventriculus - ANSWERStrue stomach

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