Fil:Cow female black white.jpg

Størrelse på denne forhåndsvisningen: 800 × 534 piksler. Andre oppløsninger: 320 × 214 piksler | 640 × 427 piksler | 1 024 × 684 piksler | 1 280 × 855 piksler | 2 700 × 1 803 piksler.

Opprinnelig fil ‎(2 700 × 1 803 piksler, filstørrelse: 887 KB, MIME-type: image/jpeg)

Denne filen er fra Wikimedia Commons og kan brukes av andre prosjekter. Informasjonen fra filbeskrivelsessiden vises nedenfor.

Beskrivelse

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

Dato

før september 2002

Kilde

www.ars.usda.gov: Image Number K5176-3

Opphavsperson

Keith Weller/USDA

Tillatelse
(Gjenbruk av denne filen)

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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Denne filen, som opprinnelig ble lastet opp til www.ars.usda.gov: Image Number K5176-3, ble gjennomgått den 6 April 2019 av en administrator eller reviewer Roy17, som bekreftet at den var tilgjengelig der under utstedt lisens på den datoen.

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Filhistorikk

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	Dato/klokkeslett	Dimensjoner	Bruker	Kommentar
nåværende	29. aug. 2023 kl. 05:31	2 700 × 1 803 (887 KB)	ReichLover1997	Reverted to version as of 21:09, 24 May 2006 (UTC)
	1. sep. 2018 kl. 02:42	2 190 × 1 680 (725 KB)	Hohum	Cropped, colour adjust
	24. mai 2006 kl. 23:09	2 700 × 1 803 (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