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5 Cards in this Set
- Front
- Back
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5 charateristics that alter birds nutrition...
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*Rapid growth
*Feathering *Oviparity (eggs) *Flying |
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Nutritional requirements...
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*Amino acids-defficiency in one =non utilisation of others. Lack of= less growth etc
*Minerals-Defficienies=lack of performance -thin eggshells,bone-Ca -Phosphorus 30% is bioavailable -Magnese-bones (perosis) |
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Digestive tract..
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*modified for flight
-lack teeth,light bodied *no teeth for grinding *crop-storage and slow enzamatic digestion *protrenviculus-glandular stomach *gizzard-muscular stomach,stones in it help to grind *pancreas releases enzymes *small and large intestine *cloaca +vent (exit) |
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Digestion...
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*highly developed salivary glands
*crop,proventriculus (HCL+pepsinogen),gizzard (trituration) *crop-smaller in omnivores *gizzard-larger+muscular in herbivores.smaller in any others. *generally short midgut,paired caeca, straight colon. |
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Hawks...
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*backward papillae for gulping
*muscular oesophagus *elastic crop *enzamatic proventriculus-harde so stones dont destroy lining *gizzard-thin walled, koilllin + valve * * |
