How are cows and birds digestive system different?

Answer 1

In the horse, fermentation of the ingested vegetation is after the small intestine, in the cecum. In the cow, fermentation of the ingested vegetation is before the small intestine, in the rumen.

Answer 2

There are several differences in the digestive system between a bird and a cow, as follows.

Cows do not have a crop and a gizzard, nor do they have two long and functional ceca. Birds do not have a four-chambered stomach, nor is their digestive system so large and expansive as a cow's: not even the largest bird in the world has as large a digestive system as the smallest mature cow does! Birds lack teeth and a strong, rough tongue, thus they need to consume stones to break down the food which they have swallowed whole. The food that they consume is broken down so much and so finely that the feces that come out comes in a form of highly concentrated urea and fecal matter, unlike the cow, which will often have tiny bits of feed particles which can be easily seen in her feces. Birds also don't defecate nearly as much as a cow, or at least in such large piles.

Answer 3

The differences between the reproductive tracts of a cow and horse are only going to be for the cow (mature female bovine) and the female horse (the mare), not between stallions and bulls. Hence, such differences are as follows:

• A mare's vulva has more of a "puckered" look than a cow's, and lacks the clitoral extension with one or two hair follicles extending out like what is commonly found on the vulva of a cow.
• A cow's cervix is longer and much thicker than a mare's, which is more of a ball of tissue connecting the vagina to the uterus.
• A mare's uterus is elongated from the cervix then divides into two uterine horns; the cow's uterus juts into two uterine horns almost immediately from the base of the cervix.
• The uterine horns of a cow are longer than that of a mare.
• Mares lack caruncles in their uteruses, whereas cows do not.

The related links below show diagrams of a cow and mare's reproductive tract. Please visit those links for a more pictoral demonstration of the differences between these two female mammals.