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A freemartin or free-martin (sometimes martin heifer) is an infertile cow with masculinized behavior and non-functioning ovaries. [1] Phenotypically, the animal appears female, but various aspects of female reproductive development are altered due to acquisition of anti-Müllerian hormone from the male twin . [ 2 ]
A dominant partner can also be cattle. In that case, they are instead referred to as a bull or HuBull [4] [2] and often incorporate breeding fetish components in HuCow scenes. [3] [4] In the gay community, both milking the nipples and milking the penis of its semen are popular fantasies. [3]
Dairy cattle are polyestrous, meaning they cycle continuously throughout the year. They tend to be on a 21 day estrus cycle. However for management purposes, some operations use synthetic hormones to synchronize their cows or heifers to have them breed and calve at the ideal times. These hormones are short term and only used when necessary.
Often, mentions of dams imply cows which will be kept in the herd for repeated breeding (as opposed to heifers or cows to be sold off sooner). A young female before she has had a calf of her own [2] and who is under three years of age is called a heifer (/ ˈ h ɛ f ər / HEF-ər). [3]
The Brahman is an American breed of zebuine-taurine hybrid beef cattle. It was bred in the United States from 1885 using cattle originating in India, imported at various times from the United Kingdom, India, and Brazil. These were mainly Gir, Guzerá and Nelore stock, with some Indu-Brasil, Krishna Valley and Ongole. The Brahman has a high ...
The cows were sick with bird flu, a virus that has spread among cattle in at least 14 states and has rapidly taken hold in California’s Central Valley, home to the nation’s largest dairy ...
Bulling is a behaviour seen in cattle (and other mammals) when one mounts another, usually when one or the other is a female in oestrus (on heat); [1] "bulling" is commonly used as a term for a female in oestrus. Female cattle in oestrus may mount any adult cattle, especially a bull (fertile male) if one is present, but they will also mount ...
Sheep have a breeding season (tupping) in the autumn, though some can breed year-round. [1] As a result of the influence of humans on sheep breeding, ewes often produce multiple lambs. This increase in lamb births, both in number and birth weight, may cause problems with delivery and lamb survival, requiring the intervention of shepherds. [2]