Plymouth Rock


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Plymouth Rock

 

a breed of chickens raised for meat and eggs. The Plymouth Rock was developed in the USA in the second half of the 19th century. There are eight varieties, according to the coloration of the plumage. The most widespread are the Barred Plymouth Rock and the White Plymouth Rock. The rooster weighs 3.6–4.3 kg, and the hen 2.7–3.4 kg. Average egg production is 160–170 eggs per year; the eggs weigh 55–60 g each. The Plymouth Rock is found in most countries. In the USSR the meat strains of White Plymouth Rock, of Canadian and Dutch origin, are primarily raised; the hens are crossed with Cornish roosters to produce broilers.

Plymouth Rock

site of Pilgrim landing in Massachusetts (1620). [Am. Hist.: Jameson, 395–396]
See: America
References in periodicals archive ?
The random regression linear intercept model with Unstructured (UN) covariance structure for the random effects matrix (G) and Unstructured Correlations (UNR) for residuals matrix (R) adequately model the egg production curve of Barred Plymouth Rock and White Plymouth Rock hens.
Plymouth Rock, which is headquartered in Boston, Massachusetts, provides private passenger automobile coverages in Massachusetts and New Hampshire.
Regardless of its ancestry, four years later, a Plymouth Rock chicken was on display at a poultry exhibition in Worcester, Mass.
Aos 42 e 56 dias de idade observou-se que o tratamento composto por aves resultantes do cruzamento de machos reprodutores de corte com femeas White Plymouth Rock, diferiu significativamente dos demais tratamentos, apresentando os menores pesos corporais(p < 0,10).
Instead of sorting and filing mail regarding claims, Plymouth Rock scans about 164,000 incoming sheets of paper a month -- almost 2 million pages a year -- with its high speed scanners.
The groups, American Vision and the Plymouth Rock Foundation, are aligned with the so-called "Christian Reconstructionist" movement, whose adherents seek to replace American democracy with a theocracy based on their interpretation of the Old Testament's legal code.
A hundred years later, his son Thomas, then 94, had himself carried to the spot where the first Pilgrims landed in order to point out the Plymouth Rock, now a hallowed memorial, before it was buried under a new wharf.
The series of sensational symbolic demonstrations that marked the American Indian Movement's beginnings -- holding an "anti-birthday" party for the atop Mount Rushmore on the Fourth of July, seizing the Mayflower replica, and painting Plymouth Rock red on Thanksgiving Day -- foreshadowed more serious actions to come.
O programa de melhoramento genetico do Laboratorio de Avicultura da Universidade Federal de Santa Maria produz, desde 1988, poedeiras de ovos marrons das racas Plymouth Rock White (PRW) e Plymouth Rock Barred (PRB).
A self managed investment trust, Central Securities Corporation (NYSE MKT:CET) revealed on Friday that it has signed an agreement to sell up to 35,000 of its 69,660 shares of class A common stock of the Plymouth Rock Company Incorporated for USD92.

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