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  2. Estrous cycle - Wikipedia

    en.wikipedia.org/wiki/Estrous_cycle

    Female cattle, also referred to as "heifers" in agriculture, will gradually enter standing estrus, or "standing heat," starting at puberty between 9 and 15 months of age. The cow estrous cycle typically lasts 21 days. [5] Standing estrus is a visual cue which signifies sexual receptivity for mounting by male cattle.

  3. Poultry feed - Wikipedia

    en.wikipedia.org/wiki/Poultry_feed

    Chickens feeding on grain. Poultry feed is food for farm poultry, including chickens, ducks, geese and other domestic birds.. Before the twentieth century, poultry were mostly kept on general farms, and foraged for much of their feed, eating insects, grain spilled by cattle and horses, and plants around the farm.

  4. How to Raise Chickens: An Easy-to-Follow Guide for Beginners

    www.aol.com/raise-happy-chickens-172000289.html

    Nesting Box Hens crave privacy and darkness when laying eggs, so plan for at least one nesting box for every four or five hens. A box that measures 14"W-by-14"H x 12"D will give even a big gal ...

  5. List of mammalian gestation durations - Wikipedia

    en.wikipedia.org/wiki/List_of_mammalian...

    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.

  6. Mammalian reproduction - Wikipedia

    en.wikipedia.org/wiki/Mammalian_reproduction

    Gestation, called pregnancy in humans, is the period of time during which the fetus develops, dividing via mitosis inside the female. During this time, the fetus receives all of its nutrition and oxygenated blood from the female, filtered through the placenta , which is attached to the fetus' abdomen via an umbilical cord .

  7. Pregnancy (mammals) - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_(mammals)

    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 ...

  8. Category:Livestock - Wikipedia

    en.wikipedia.org/wiki/Category:Livestock

    The category is for various topics of raising livestock, i.e., domesticated animals, that may be kept or raised in pens, houses, pastures, or farms as part of an agricultural or farming operation, whether for commerce or private use.

  9. Poultry - Wikipedia

    en.wikipedia.org/wiki/Poultry

    Chickens raised intensively for their meat are known as "broilers". Breeds have been developed that can grow to an acceptable carcass size (2 kg or 4 lb 7 oz) in six weeks or less. [ 52 ] Broilers grow so fast, their legs cannot always support their weight and their hearts and respiratory systems may not be able to supply enough oxygen to their ...