basic animal digestive system, reproduction, gestation, domestication

Cattle

Genus and species= Bos Taurus (european) / Bos Indicus (closer to equator)

Digestive system = ruminants

Reproduction= polyestrus

Gestation= 283 days

Domestication = for farming

Pigs

Genus and species= sus scrofus domesticus

Digestive system = monogastrics

Reproduction= polyestrus , lactational anestrus ( do NOT cycle when lactating )

Gestation= 3 months 3 weeks 3 days

Domestication = for food

Sheep

Genus and species= ovis aries

Digestive system = ruminant

Reproduction= seasonal polyestrus short day ( in the fall )

Gestation= 5 months

Domestication = for food

Goats

Genus and species= capra hircus

Digestive system = ruminant

Reproduction= polyestrus short day

Gestation= 5 months

Domestication=for food

Horses

Genus and species= equus caballus

Digestive system = monogastric hind gut fermenter

Reproduction= seasonal long day

Gestation= 11 months

Domestication = war, transport

Chickens

Genus and species= gallus domesticus

Digestive system = monogastric

Reproduction= oviparous ( egg laying )

Incubation = 21 days

Domestication = for food

Turkeys

Genus and species= leagris gallapavo

Digestive system = monogastrics

Reproduction= oviparous ( egg laying )

Incubation= 28 days

Domestication = for food

ruminant

• 4 compartment stomach

• Regurgitates undigested food from the rumen and masticates it when at rest

• true stomach = abomasum

• sheep, goats, cattle

monogastric

-stomach w single chamber

-pigs, chicken, turkey

hind gut fermenter

-Microbial fermentation occurs in the cecum and large intestine

-rabbit and horses

polyestrus

having two plus estrus cycles per breeding season

estrus

the period where the female is receptive to the male

short day breeders

seasonal breeding

give birth in fall when days are shorter, less light

long day breeders

seasonal breeding

give birth in the spring when days are longer, more light

gestation

The period of development of the young in the womb