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This is a collection of lists of mammal gestation period estimated by experts in their fields. The mammals included are only viviparous (marsupials and placentals) as some mammals, which are monotremes (including platypuses and echidnas) lay their eggs. A marsupial has a short gestation period, typically shorter than placental.
Smaller species normally have a shorter gestation period than larger animals. [2] For example, a cat's gestation normally takes 58–65 days while an elephant's takes nearly 2 years (21 months). [3] However, growth does not necessarily determine the length of gestation for all species, especially for those with a breeding season. Species that ...
The Romagnola is a breed of cattle from the Emilia-Romagna region of Northern Italy.It belongs to the Podolic group of grey cattle. Romagnola cattle were used principally as draught beasts in the past; since the mechanisation of agriculture in the middle of the twentieth century they have been bred primarily for beef production.
Good nutrition is vital to ewes during the last 6 weeks of pregnancy in order to prevent pregnancy toxemia, especially in twin bearing ewes. Overfeeding, however, may result in overly large single lambs and dystocia. Shearing ewes before lambing reduces the number of ewes that are cast (i.e., unable to rise unassisted), and the number of lambs ...
Exports of cattle and semen were for a while an important economic resource for the island, and in the early 20th century, a large number of Guernsey cattle were exported to the United States. [5] The Guernsey breed is on the watch list maintained by the American Livestock Breeds Conservancy, with fewer than 2,500 annual registrations in the U ...
The gestation period averages 285 days, but varies depending on the age and nutrition of the mother. The sex of the calf may also affect the carrying time, as male calves are carried for a longer period than females. Location, breed, body weight, and season affect the overall health of the animal and in return may also affect the gestation period.
Cow in California. The Corriente is an American breed of small cattle, used principally for rodeo events. It derives from Criollo Mexicano stock, which in turn descends from Iberian cattle brought to the Americas by the Conquistadors, and introduced in the sixteenth and seventeenth centuries to various parts of what is now Mexico.
The Braunvieh is a traditional breed of triple-purpose cattle from the Alpine region, particularly Switzerland; at was reared as a draft beast, for its milk and for its meat. The Braunvieh was first imported to the United States in 1869, when seven cows and a bull were shipped to one Henry M. Clark in Belmont, Massachusetts . [ 5 ]