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Tritrichomonas foetus is a species of single-celled flagellated parasites that is known to be a pathogen of the bovine reproductive tract as well as the intestinal tract of cats. In cattle, the organism is transmitted to the female vagina and uterus from the foreskin of the bull where the parasite is known to reside.
In this period, 27 million cattle were driven from Texas to railheads in Kansas, for shipment to stockyards in St. Louis and points east, and direct to Chicago. The long distances covered, the need for periodic rests by riders and animals, and the establishment of railheads led to the development of "cow towns" across the frontier.
A fresh cow is a dairy term for a cow (or a first-calf heifer in few regions) who has recently given birth, or "freshened." The adjective applying to cattle in general is usually bovine. The terms bull, cow and calf are also used by extension to denote the sex or age of other large animals, including whales, hippopotamus, camels, elk and elephants.
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 steer. The Texas Longhorn is an American breed of beef cattle, characterized by its long horns, which can span more than 8 ft (2.4 m) from tip to tip. [4] It derives from cattle brought from the Iberian Peninsula to the Americas by Spanish conquistadors from the time of the Second Voyage of Christopher Columbus until about 1512. [5]
The virus has many other evasion strategies against the host's immune system contributing to the virus being able to maintain lifelong infection in the animal. After primary infection of BoHV-1, the latent infection is quite often found in the trigeminal ganglion of the cow, although on occasion infection can enter the central nervous system. [4]
A 38 mile long island that is from one mile to four and one half miles wide. Jointly owned by the Texas General Land Office and the U.S. Fish and Wildlife Service, cooperatively managed as the Matagorda Island National Wildlife Refuge and State Natural Area, by the Texas Parks and Wildlife.
From 1875 until 1880, the Chisholm Trail, also referred to as the Eastern Trail, became a feeder route into the Western Trail. Western Trail feeder routes extended from Brownsville, Texas, through San Antonio, Bandera, Texas, and the Kerrville area. The Red River was crossed at Doan's Crossing. In 1881, Doan noted that the trail reached its ...