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Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of its parents.
Beefmaster is a breed of beef cattle that was developed in the early 1930s by Tom Lasater (the breed founder), [1] from a systematic crossing of Hereford cows and Shorthorn cows with Brahman bulls. The exact mixture of the foundation cattle is unknown, but is thought to be about 25% Hereford, 25% Milking Shorthorn and 50% Brahman.
The gross value of the Australian cattle and calf production totalled $14.3billion in 2015–16, which is approximately 50% of total value of Australian livestock industries. [6] A regional report on the Northern Australian beef industry indicates that by 1996–97, 10% of the North-West herd were Charbray out of the 23 different bull breeds. [12]
Cattle, sheep, and goats are sometimes dehorned [1] [2] for economic and safety reasons. Disbudding is a different process with similar results; it cauterizes and thus destroys horn buds before they have grown into horns. Disbudding is commonly performed early in an animal's life, as are other procedures such as docking and castration. In some ...
Parasitic bronchitis, also known as hoose, husk, or verminous bronchitis, [1] is a disease of sheep, cattle, goats, [2] and swine caused by the presence of various species of parasite, commonly known as lungworms, [3] in the bronchial tubes or in the lungs. It is marked by cough, dyspnea, anorexia and constipation.
There are various options for controlling ticks of domestic animals, including: topical application of parasiticidal chemicals in dip baths or spray races or pour-on formulations, spraying parasiticides on walls of cattle pens, and rendering the walls of cattle pens smooth with mortar to stop ticks molting there. Selection of cattle for good ...
The beef hormone controversy or beef hormone dispute is a disagreement over the use of growth hormones in beef production. In 1989, the European Communities banned the import of meat that contained artificial beef growth hormones , [ a ] although they were approved for use in the United States.
Sweating sickness is "an acute, febrile, tickborne toxicosis characterized mainly by a profuse, moist eczema and hyperemia of the skin and visible mucous membranes." [1] It affects cattle, mainly calves, [2] mostly in southern and eastern Africa.