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Imachen:Cow female black white.jpg

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Descripción
English: Holstein-Friesian milk cow

Because much of the cost of a cow is the feed and labor needed to maintain her, fewer but higher yielding cows mean lower priced milk. Dairy herd improvement ultimately benefits consumers.

That's why it's just as important to keep complete and accurate records as it is to keep the cows contented. The National Cooperative Dairy Herd Improvement Program has been tracking Bossy's milk yields since 1905.

Over the years, this program has made enormous contributions to dairy cattle breeding. ARS scientists receive the lactation records of all herds enrolled in the program and use the figures to rank the bulls that sire the nation's dairy cows and to rank the cows themselves.

The results of years and years of scientific dairying? Milk production has been trending upward for more than 25 years in the United States-from about 117,000 million pounds in 1970 to more than 150,000 million pounds in 1994-even though the number of milk cows has been reduced.
Nederlands: Een koe
Calendata antes de setiembre de 2002
date QS:P,+2002-09-00T00:00:00Z/7,P1326,+2002-09-00T00:00:00Z/10
Fuent www.ars.usda.gov: Image Number K5176-3
Autor Keith Weller/USDA
Permiso
(Reutilización d'iste fichero)
Public domain This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.

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Este archivo, el cual fue publicado originalmente en www.ars.usda.gov: Image Number K5176-3, fue revisado el 6 April 2019 por el revisor Roy17, quien confirmó que en esa fecha estaba disponible bajo la licencia indicada.
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Black White cow in green grass field in farm (livestock)

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representa a espanyol

prado espanyol

Holstein espanyol

tipo de archivo espanyol

image/jpeg

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actual03:31 29 ago 2023Miniatura d'a versión de 03:31 29 ago 20232700 × 1803 (887 kB)ReichLover1997Reverted to version as of 21:09, 24 May 2006 (UTC)
00:42 1 set 2018Miniatura d'a versión de 00:42 1 set 20182190 × 1680 (725 kB)HohumCropped, colour adjust
21:09 24 may 2006Miniatura d'a versión de 21:09 24 may 20062700 × 1803 (887 kB)Siebrand{{Information| |Description= {{nl|Een koe}} {{en|Because much of the cost of a cow is the feed and labor needed to maintain her, fewer but higher yielding cows mean lower priced milk. Dairy herd improvement ultimately benefits consumers. That's why it's j

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