State and National Standardized Lactation Averages by Breed

AIPL RESEARCH REPORT
K2-02 (2-04)

State and National Standardized Lactation Averages by Breed for Cows Calving in 2002

R.L. Powell and A.H. Sanders
Animal Improvement Programs Laboratory, ARS-USDA, Beltsville, MD 20705-2350
301-504-8334 (voice) ~ 301-504-8092 (fax) ~ inquiry@aipl.arsusda.gov ~ http://aipl.arsusda.gov

Data for 2004 State and national lactation averages report were from calvings in 2002. Yield data used in national genetic evaluations of dairy cattle and in other U.S. Department of Agriculture research originate from herds enrolled in the Dairy Herd Improvement (DHI) program. The test-day data, used by the Animal Improvement Programs Laboratory to determine lactation records, are processed and provided through dairy records processing centers (DRPC). DHI participation and DRPC activity have also been summarized.

Lactation records were calculated using the best prediction method and were standardized for age-parity, calving month, previous days open, and times milked per day. Records in progress and other records shorter than 305 days were extended to 305 days as part of the best prediction process. Component percentages were computed from average standardized yields for milk and components. Protein testing is at or near 100% except in California (89% for Guernseys, 87% for Holsteins, and 90% for Red and Whites).

This is the third report to include actual true protein measurements. National averages for all prior years have been computed to reflect the change from reporting of crude protein to true protein. Data collected prior to May 1, 2000 were adjusted to true protein basis by subtracting 0.19 percent from the crude protein percentage.

Only data used in calculation of national genetic evaluations are included in State and national averages. Thus, records beyond fifth lactation or by cows that lacked a first lactation record or valid sire identification were excluded. For other editing requirements, see complete evaluation documentation.

Numbers of records and averages for yields and component percentages are in Tables 1 through 7 by State for Ayrshires, Brown Swiss, Guernseys, Holsteins, Jerseys, Milking Shorthorns, and Red and Whites. Numbers of records and national averages are in Tables 8A-8F by breed for selected years.

Breed yields are different between this report and the herd-average report because this report uses standardized data, whereas herd averages are based on actual yields. Also, data for many cows that contribute to herd averages for 2003 actually calved in 2003. Finally, records contributing to herd-averages are not restricted to those usable for national genetic evaluations. Relative yields among breeds will differ between the two reports because of breed differences in percentage of usable records and differences in age-parity factors.

Although Ayrshire, Brown Swiss, and Holstein calving records for 2002 increased slightly over 2001 (3%, 1%, and <0.01%, respectively), numbers are still lower than for 2000. Calvings for Guernsey, and Red and White continued to decline, dropping by 5% and 7%, repectively since the previous year. The Jersey breed continued to grow, increasing by a record-setting 6% (6,538) in just one year. Number of Milking Shorthorn records was at a seven year high, increasing by 9% over the previous year.

After increasing by an average of 2% from 2000 calvings to 2001 calvings, milk yield was essentially unchanged between 2001 and 2002 calvings. Only Jerseys increased milk yield by 1% (191 lbs.). Fat yield continued to increase slightly in all breeds, but was less than 1% except for Brown Swiss, Jerseys, and Milking Shorthorns. After dropping slightly from 2000 calvings to 2001 calvings, fat percentage increased slightly in all breeds except Red and White. Protein yield and percentage were essentially unchanged except for a 1% increase in yield for Milking Shorthorns.

Changes in the numbers of records and average yields result from many factors. While factors such as feed availability and other operating costs, milk and beef prices, Government programs, and characteristics of herds entering and leaving eligible testing programs can affect production averages in either direction, genetic change is expected to have a positive effect on yield. The leveling off of average yields may reflect changes in management strategies and increased genetic emphasis on other traits affecting profitability such as health and longevity.

DHI Lactation Averages for Ayrshire

Table 1. Ayrshire State and National Standardized Lactation Averages for Cows Calving in 2002 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	5	14,800	3.22	477	2.99	443	100
Arkansas	31	18,192	3.66	667	3.11	566	100
California	52	18,706	3.92	734	3.18	594	100
Colorado	6	20,896	3.37	705	2.94	613	100
Connecticut	102	19,095	4.06	775	3.26	623	100
Delaware	1	21,164	4.07	861	3.15	666	100
Florida	9	13,760	3.89	535	3.30	454	100
Georgia	16	17,107	3.51	600	3.16	541	100
Idaho	2	18,644	4.03	751	3.12	582	100
Illinois	239	18,002	3.75	675	3.17	571	100
Indiana	107	17,249	3.85	665	3.18	548	100
Iowa	519	19,771	3.85	761	3.15	623	100
Kansas	84	16,453	3.84	631	3.19	525	100
Kentucky	39	15,575	3.72	580	3.22	501	100
Louisiana	37	14,983	3.69	553	3.08	461	100
Maine	138	18,158	3.70	673	3.04	551	100
Maryland	322	19,909	4.01	798	3.16	630	100
Massachusetts	24	18,318	3.81	698	3.07	562	100
Michigan	39	20,974	3.82	800	3.10	650	100
Minnesota	213	15,747	3.81	600	3.10	488	100
Mississippi	3	19,504	3.27	638	2.97	578	100
Missouri	99	15,613	3.82	597	3.16	493	100
Nebraska	71	16,549	3.81	631	3.15	522	100
New Hampshire	149	18,208	3.83	698	3.11	566	100
New Jersey	15	17,717	4.49	795	3.16	561	100
New Mexico	351	15,032	3.74	562	3.19	480	100
New York	1219	17,907	3.84	688	3.08	551	100
North Carolina	72	14,439	4.03	581	3.01	434	100
North Dakota	10	15,669	4.02	629	3.13	490	100
Ohio	440	17,999	3.84	691	3.14	565	100
Oklahoma	57	20,050	3.61	725	3.08	618	100
Oregon	44	18,688	3.88	726	3.17	593	100
Pennsylvania	934	18,401	3.88	714	3.13	576	100
Rhode Island	20	14,925	3.99	596	3.19	476	100
South Carolina	27	14,675	3.63	533	3.11	456	100
Tennessee	36	15,725	3.80	597	3.14	493	100
Texas	87	20,522	3.95	810	3.22	660	100
Utah	11	14,964	4.38	655	3.32	497	100
Vermont	486	17,865	3.88	693	3.07	549	100
Virginia	84	14,701	3.82	561	3.10	455	100
Washington	18	19,159	3.95	756	3.15	604	100
West Virginia	51	15,063	3.79	572	3.09	466	100
Wisconsin	486	18,084	3.88	703	3.11	562	100
US	6755	17,880	3.85	689	3.12	558	100

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DHI Lactation Averages for Brown Swiss

Table 2. Brown Swiss State and National Standardized Lactation Averages for Cows Calving in 2002 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	30	20,551	3.69	758	3.15	647	100
Arizona	201	23,366	3.87	904	3.16	739	100
Arkansas	130	16,949	3.68	624	3.30	559	100
California	448	22,014	3.89	856	3.35	736	99
Colorado	47	22,147	3.78	838	3.18	703	100
Connecticut	41	18,632	3.93	733	3.26	608	100
Delaware	23	19,816	4.36	864	3.20	634	100
Florida	9	18,725	3.66	685	3.17	593	100
Georgia	65	18,739	3.94	738	3.27	613	100
Idaho	212	21,893	3.93	861	3.37	737	100
Illinois	590	21,631	4.06	878	3.30	714	100
Indiana	427	22,335	4.10	915	3.35	749	100
Iowa	1393	21,835	4.05	885	3.29	718	100
Kansas	237	20,361	3.94	802	3.39	690	100
Kentucky	135	17,860	3.78	674	3.31	592	100
Louisiana	23	15,460	3.49	540	3.16	489	100
Maine	29	16,567	3.82	633	3.31	549	100
Maryland	376	21,456	4.08	876	3.27	702	100
Massachusetts	67	18,825	4.17	785	3.34	628	100
Michigan	294	25,275	3.87	979	3.33	841	100
Minnesota	1188	20,374	4.03	821	3.25	662	100
Mississippi	12	18,555	3.77	700	3.09	574	100
Missouri	407	19,362	3.95	764	3.36	651	100
Montana	52	15,886	4.00	636	3.41	542	100
Nebraska	232	21,909	3.86	846	3.25	712	100
New Hampshire	93	18,479	3.99	738	3.30	610	100
New Jersey	15	19,779	4.14	819	3.30	653	100
New Mexico	25	21,337	3.78	806	3.27	698	100
New York	990	20,188	4.00	808	3.27	660	100
North Carolina	86	18,495	3.97	733	3.23	598	100
North Dakota	63	17,394	3.96	689	3.38	589	100
Ohio	1460	21,099	4.13	870	3.34	705	100
Oklahoma	123	18,370	3.78	695	3.32	610	100
Oregon	222	21,417	4.12	883	3.32	711	100
Pennsylvania	1188	20,814	3.97	827	3.27	680	100
Puerto Rico	151	13,987	3.31	463	3.26	456	100
South Carolina	11	19,998	3.99	797	3.26	653	100
South Dakota	288	19,066	4.11	783	3.40	649	100
Tennessee	263	18,114	4.17	756	3.30	597	100
Texas	561	20,447	4.00	818	3.31	677	100
Utah	86	16,715	4.42	740	3.40	569	100
Vermont	296	20,444	4.22	863	3.25	665	100
Virginia	149	22,451	3.73	838	3.21	720	100
Washington	235	22,004	3.84	845	3.36	739	100
West Virginia	6	17,314	3.80	658	3.27	567	100
Wisconsin	2660	21,433	4.04	865	3.28	703	100
US	15639	20,869	4.01	837	3.30	688	>99

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DHI Lactation Averages for Guernsey

Table 3. Guernsey State and National Standardized Lactation Averages for Cows Calving in 2002 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Arizona	29	16,914	4.12	697	3.07	520	100
Arkansas	52	12,969	4.19	544	3.43	445	100
California	401	17,841	4.31	769	3.40	615	89
Connecticut	44	15,879	4.63	735	3.37	535	100
Georgia	13	14,110	3.65	515	3.31	468	100
Idaho	23	16,526	4.27	706	3.35	554	100
Illinois	212	17,005	4.48	762	3.25	552	100
Indiana	358	16,053	4.40	707	3.34	536	100
Iowa	593	18,055	4.49	811	3.29	594	100
Kansas	45	14,900	4.31	642	3.26	485	100
Kentucky	42	16,151	4.11	664	3.26	527	100
Louisiana	39	14,923	4.08	609	3.10	462	100
Maine	37	15,145	4.42	669	3.34	506	100
Maryland	368	16,451	4.58	754	3.33	548	100
Massachusetts	7	18,328	4.50	825	3.19	585	100
Michigan	59	14,417	4.24	611	3.22	465	100
Minnesota	480	14,471	4.49	650	3.27	473	100
Mississippi	1	16,571	3.53	585	2.89	479	100
Missouri	294	14,541	4.32	628	3.37	490	100
Montana	19	18,634	4.10	765	3.26	607	100
Nebraska	76	18,384	4.39	806	3.27	601	100
New Hampshire	20	18,544	4.28	794	3.25	602	100
New Jersey	2	20,643	5.21	1075	3.15	651	100
New York	570	15,944	4.50	718	3.26	520	100
North Carolina	89	16,628	4.39	730	3.25	540	100
Ohio	346	16,649	4.45	741	3.31	551	100
Oklahoma	63	15,719	4.17	655	3.34	525	100
Oregon	393	18,078	4.39	794	3.25	588	100
Pennsylvania	971	16,341	4.45	726	3.24	529	>99
Rhode Island	1	22,305	4.65	1037	3.50	780	100
South Carolina	94	16,657	4.61	768	3.29	547	100
South Dakota	60	14,943	4.27	638	3.18	475	100
Tennessee	76	16,730	4.15	695	3.26	545	100
Texas	68	14,714	4.26	628	3.19	469	100
Utah	17	19,025	4.32	822	3.40	647	100
Vermont	180	15,349	4.47	686	3.22	494	100
Virginia	135	15,212	4.67	710	3.22	490	100
Washington	131	17,057	4.64	792	3.37	575	100
West Virginia	26	16,573	4.49	743	3.43	569	100
Wisconsin	1859	16,445	4.50	741	3.25	535	100
US	8293	16,398	4.45	730	3.28	538	99

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DHI Lactation Averages for Holstein

Table 4. Holstein State and National Standardized Lactation Averages for Cows Calving in 2002 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	1515	20,979	3.31	694	2.95	618	100
Arizona	19877	24,074	3.53	850	2.98	716	>99
Arkansas	1725	20,348	3.47	706	3.01	613	100
California	335893	26,309	3.57	940	3.03	799	87
Colorado	11624	26,429	3.50	926	3.03	801	>99
Connecticut	6881	25,192	3.55	893	2.99	753	100
Delaware	2605	23,941	3.75	899	3.00	719	100
Florida	6358	22,939	3.61	827	3.00	689	100
Georgia	9450	22,507	3.53	794	2.96	665	100
Idaho	30343	26,474	3.52	931	3.03	803	>99
Illinois	24917	24,183	3.67	888	3.00	727	100
Indiana	17561	23,605	3.70	874	3.01	710	100
Iowa	41686	24,653	3.64	898	3.00	741	>99
Kansas	13381	23,989	3.65	875	3.02	725	>99
Kentucky	7421	21,963	3.55	780	3.01	661	100
Louisiana	3373	20,209	3.38	683	2.95	596	>99
Maine	6657	24,800	3.65	905	2.99	742	100
Maryland	22097	23,627	3.79	896	3.00	709	100
Massachusetts	5749	25,178	3.70	932	2.98	751	100
Michigan	56999	25,993	3.76	978	2.98	775	>99
Minnesota	122982	24,009	3.70	889	2.99	717	>99
Mississippi	3703	23,200	3.61	838	2.92	677	100
Missouri	12110	21,598	3.61	780	3.06	661	100
Montana	3308	26,517	3.49	926	2.96	785	100
Nebraska	10785	24,186	3.69	892	3.04	734	>99
Nevada	3546	25,738	3.47	894	3.02	778	98
New Hampshire	6164	26,527	3.67	973	2.99	794	100
New Jersey	4328	24,472	3.91	956	2.98	730	100
New Mexico	12370	25,412	3.50	889	3.01	765	>99
New York	160225	24,576	3.68	903	2.97	729	>99
North Carolina	12858	24,246	3.63	879	2.97	720	100
North Dakota	2759	23,094	3.68	851	2.99	691	100
Ohio	43160	24,233	3.74	906	3.02	733	>99
Oklahoma	3920	22,819	3.32	758	3.02	688	100
Oregon	17749	26,618	3.69	981	3.02	804	100
Pennsylvania	169742	24,397	3.67	897	2.98	727	>99
Puerto Rico	3207	15,221	2.86	436	2.98	453	100
Rhode Island	138	24,492	3.57	874	3.03	741	100
South Carolina	5720	23,176	3.65	846	2.96	686	100
South Dakota	7432	23,987	3.76	902	3.00	720	100
Tennessee	8929	22,367	3.55	795	2.94	658	100
Texas	25251	23,678	3.64	861	3.05	723	>99
Utah	13225	26,066	3.52	916	3.01	783	>99
Vermont	25073	24,772	3.68	911	2.95	732	100
Virginia	36242	23,754	3.63	863	2.97	706	100
Washington	33009	26,732	3.65	975	3.02	806	100
West Virginia	3558	22,969	3.60	826	3.02	693	100
Wisconsin	212162	25,464	3.69	940	2.98	760	>99
Wyoming	15	17,308	3.64	630	2.99	517	100
US	1589782	24,996	3.65	911	3.00	749	97

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DHI Lactation Averages for Jersey

Table 5. Jersey State and National Standardized Lactation Averages for Cows Calving in 2002 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	1535	16,089	4.53	729	3.59	578	100
Arizona	5610	17,683	4.60	813	3.43	607	100
Arkansas	669	15,802	4.58	724	3.68	582	100
California	32131	18,865	4.62	871	3.60	679	99
Colorado	160	19,404	4.50	874	3.45	668	100
Connecticut	418	17,390	4.64	807	3.52	611	100
Delaware	36	16,816	4.63	779	3.49	586	100
Florida	225	14,776	4.42	653	3.40	503	>99
Georgia	807	15,629	4.41	689	3.45	540	100
Idaho	2906	18,026	4.53	816	3.60	649	100
Illinois	1022	16,445	4.66	767	3.54	582	100
Indiana	988	16,914	4.57	773	3.52	596	100
Iowa	2834	17,654	4.64	820	3.51	619	100
Kansas	880	16,414	4.52	743	3.56	585	100
Kentucky	1209	15,162	4.38	664	3.56	540	100
Louisiana	301	14,876	3.96	589	3.48	518	100
Maine	700	16,399	4.69	769	3.53	579	100
Maryland	1024	17,133	4.60	787	3.56	609	100
Massachusetts	734	17,135	4.72	808	3.52	604	100
Michigan	1468	16,213	4.70	762	3.55	576	100
Minnesota	1990	16,214	4.67	757	3.55	575	>99
Mississippi	496	17,196	4.34	746	3.49	599	100
Missouri	1524	15,314	4.45	682	3.58	549	100
Montana	4	16,793	4.42	743	3.70	622	100
Nebraska	307	18,190	4.39	799	3.59	653	100
Nevada	356	18,199	4.47	814	3.51	639	100
New Hampshire	663	18,267	4.57	834	3.58	654	100
New Jersey	105	15,569	5.04	785	3.54	551	100
New Mexico	280	19,905	4.52	900	3.60	716	100
New York	5753	17,525	4.59	805	3.51	616	>99
North Carolina	1940	19,481	4.29	835	3.45	672	100
North Dakota	45	14,936	4.53	676	3.57	534	100
Ohio	6845	17,543	4.76	836	3.58	628	100
Oklahoma	432	15,858	4.40	698	3.58	567	100
Oregon	7425	19,061	4.62	881	3.56	679	100
Pennsylvania	7376	16,553	4.66	771	3.50	580	100
Puerto Rico	150	12,055	3.96	477	3.58	431	100
South Carolina	2158	17,827	4.55	812	3.47	618	100
South Dakota	314	18,270	4.99	911	3.46	632	100
Tennessee	2148	16,415	4.60	755	3.50	575	100
Texas	6254	15,614	4.49	700	3.58	559	100
Utah	944	17,503	4.48	784	3.61	633	100
Vermont	2880	16,349	4.68	766	3.50	573	100
Virginia	1120	17,040	4.64	790	3.55	605	100
Washington	2118	17,966	4.56	819	3.62	650	100
West Virginia	305	17,951	4.38	785	3.59	644	100
Wisconsin	5883	17,489	4.72	826	3.57	625	100
US	115472	17,663	4.61	814	3.55	628	>99

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DHI Lactation Averages for Milking Shorthorn

Table 6. Milking Shorthorn State and National Standardized Lactation Averages for Cows Calving in 2002 With
Records Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	2	13,788	3.45	476	3.15	434	100
Arizona	219	13,673	3.52	481	2.99	409	100
Arkansas	28	16,460	3.64	598	3.14	517	100
California	150	18,452	3.40	628	3.04	559	99
Colorado	4	22,954	3.62	832	3.05	701	100
Connecticut	3	17,908	3.59	642	2.97	531	100
Idaho	68	24,477	3.20	782	3.11	761	100
Illinois	23	17,608	3.35	590	3.16	557	100
Indiana	37	14,377	3.66	526	3.23	464	100
Iowa	147	15,697	3.57	560	3.04	477	100
Kansas	43	17,603	3.70	652	3.21	566	100
Maine	24	16,629	3.57	593	3.01	500	100
Maryland	18	14,548	3.75	545	3.14	457	100
Massachusetts	7	18,252	3.71	678	2.90	530	100
Michigan	3	19,463	3.62	704	3.10	603	100
Minnesota	490	17,228	3.67	633	3.07	530	100
Missouri	89	17,244	3.74	645	3.24	559	100
Nebraska	11	17,380	3.76	654	3.20	557	100
New Hampshire	72	19,208	3.45	662	3.04	584	100
New York	84	16,619	3.53	586	3.02	502	100
North Carolina	8	16,139	3.78	609	3.15	509	100
North Dakota	13	15,677	3.85	604	3.14	493	100
Ohio	90	14,008	3.42	479	3.04	426	100
Oklahoma	204	16,194	3.36	544	3.11	503	100
Oregon	50	18,035	3.79	684	3.17	571	100
Pennsylvania	85	17,776	3.78	671	3.05	542	100
South Dakota	63	15,979	3.72	595	3.18	509	100
Texas	65	19,459	3.54	689	3.19	620	100
Utah	42	15,658	3.63	568	3.23	506	100
Vermont	47	16,420	3.59	589	3.01	494	100
Virginia	12	20,137	3.36	677	3.06	616	100
Washington	97	20,334	3.58	727	3.07	623	100
Wisconsin	236	18,489	3.73	690	3.05	563	100
US	2534	17,144	3.58	614	3.08	528	>99

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DHI Lactation Averages for Red & White

Table 7. Red & White State and National Standardized Lactation Averages for Cows Calving in 2002 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Arkansas	5	20,746	3.12	648	2.87	595	100
California	274	21,713	3.66	794	3.02	644	90
Colorado	17	24,683	3.25	803	2.81	695	100
Connecticut	5	26,881	3.21	864	2.82	758	100
Florida	1	19,518	3.56	695	2.96	578	100
Georgia	1	25,427	3.45	878	2.75	699	100
Idaho	28	26,735	3.42	915	3.09	826	100
Illinois	105	22,947	3.61	828	2.97	681	100
Indiana	11	23,767	3.73	886	2.97	705	100
Iowa	42	24,606	3.65	897	2.97	731	100
Kansas	5	21,912	3.32	728	2.86	627	100
Kentucky	40	19,767	3.73	738	3.00	594	100
Maine	4	24,303	3.18	772	2.62	637	100
Maryland	33	21,901	4.00	876	2.88	631	100
Massachusetts	5	20,872	3.68	769	3.01	627	100
Michigan	392	24,394	3.71	906	3.02	736	100
Minnesota	425	23,133	3.69	854	2.94	679	100
Mississippi	1	12,360	3.73	461	2.88	356	100
Missouri	2	14,623	3.30	482	2.98	436	100
Nebraska	1	25,412	3.71	943	3.23	821	100
New Hampshire	1	29,162	3.62	1055	2.90	847	100
New Jersey	3	24,096	3.60	869	2.91	701	100
New York	387	22,077	3.69	815	2.95	651	100
North Carolina	12	20,569	3.79	780	3.03	623	100
North Dakota	7	23,646	3.45	815	2.99	706	100
Ohio	46	18,982	3.60	684	2.98	566	100
Oklahoma	4	17,887	3.73	667	3.14	562	100
Oregon	25	23,408	3.52	825	3.02	707	100
Pennsylvania	333	23,946	3.66	876	2.96	710	100
Puerto Rico	58	15,184	2.88	438	2.94	447	100
South Carolina	107	25,245	3.44	867	3.03	765	100
Texas	2	20,864	3.92	819	3.17	661	100
Utah	1	17,146	4.12	707	3.68	631	100
Vermont	13	19,413	3.77	731	2.88	559	100
Virginia	243	23,855	3.63	866	2.96	706	100
Washington	6	26,032	3.43	893	2.93	763	100
Wisconsin	689	23,548	3.67	863	2.93	691	100
US	3334	23,102	3.65	843	2.96	684	99

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DHI Lactation Averages Over Time

Tables 8A-8F. Summary of National Standardized Lactation Averages

for Cows With Records Used in National Genetic Evaluations.

	Table 8A. Number of Records
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002
Ayrshire	13,465	11,576	9,526	8,824	8,176	7,617	7,399	7,035	6,552	6,755
Brown Swiss	17,236	17,717	17,721	16,977	16,245	15,499	15,677	15,704	15,473	15,639
Guernsey	38,364	25,805	15,420	13,454	11,944	10,796	10,273	9,406	8,690	8,293
Holstein	1,109,758	1,720,127	1,769,002	1,722,958	1,701,669	1,641,948	1,668,927	1,624,058	1,588,990	1,589,782
Jersey	63,305	99,416	105,672	102,559	100,213	99,853	104,460	106,837	108,934	115,472
Milking Shorthorn	2,320	2,684	2,662	2,483	2,445	2,326	2,436	2,407	2,323	2,534
Red and White	900	5,588	6,281	5,673	5,242	4,595	4,297	3,927	3,578	3,334

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	Table 8B. Milk (lbs)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002
Ayrshire	13,144	14,799	15,684	15,647	16,611	16,932	17,424	17,389	17,878	17,880
Brown Swiss	14,172	16,250	17,493	17,818	18,782	19,386	20,148	20,300	20,694	20,869
Guernsey	11,666	13,297	14,051	14,177	15,132	15,546	15,963	16,043	16,410	16,398
Holstein	17,566	20,178	21,618	21,926	23,143	23,675	24,380	24,517	24,889	24,996
Jersey	11,437	13,407	14,842	15,097	15,838	16,294	16,940	17,038	17,472	17,663
Milking Shorthorn	11,560	14,011	15,341	15,464	16,007	16,109	16,704	16,548	17,008	17,144
Red and White	16,470	18,832	20,161	20,310	21,423	22,019	22,732	22,845	22,981	23,102

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	Table 8C. Fat (%)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002
Ayrshire	3.88	3.85	3.86	3.86	3.86	3.86	3.87	3.86	3.84	3.85
Brown Swiss	4.06	3.98	4.01	4.01	4.01	3.98	4.01	4.01	4.00	4.01
Guernsey	4.60	4.49	4.49	4.48	4.47	4.44	4.47	4.46	4.44	4.45
Holstein	3.61	3.61	3.64	3.63	3.62	3.63	3.65	3.64	3.63	3.65
Jersey	4.84	4.73	4.64	4.64	4.64	4.62	4.61	4.60	4.59	4.61
Milking Shorthorn	3.69	3.58	3.58	3.58	3.59	3.55	3.57	3.59	3.57	3.58
Red and White	3.62	3.67	3.68	3.69	3.66	3.64	3.64	3.66	3.65	3.65

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	Table 8D. Fat (lbs)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002
Ayrshire	510	570	605	605	642	653	674	671	687	689
Brown Swiss	576	646	701	715	752	771	807	814	827	837
Guernsey	536	598	630	635	676	690	713	716	728	730
Holstein	633	729	786	798	838	859	890	893	904	911
Jersey	553	634	689	700	734	753	781	784	802	814
Milking Shorthorn	426	502	549	554	574	572	596	595	608	614
Red and White	596	692	742	750	785	801	828	837	839	843

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	Table 8E. Protein (%)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002
Ayrshire	.	3.16	3.13	3.13	3.12	3.11	3.13	3.13	3.12	3.12
Brown Swiss	.	3.33	3.32	3.32	3.32	3.30	3.31	3.31	3.30	3.30
Guernsey	.	3.30	3.27	3.29	3.30	3.29	3.31	3.31	3.29	3.28
Holstein	.	2.94	2.94	2.94	2.96	2.96	2.99	3.00	3.00	3.00
Jersey	.	3.60	3.56	3.56	3.55	3.55	3.57	3.58	3.57	3.55
Milking Shorthorn	.	3.09	3.07	3.06	3.07	3.06	3.09	3.10	3.07	3.08
Red and White	.	2.95	2.94	2.95	2.97	2.96	2.97	2.98	2.97	2.96

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	Table 8F. Protein (lbs)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002
Ayrshire	.	468	491	490	518	527	545	545	558	558
Brown Swiss	.	541	581	592	623	639	667	672	683	688
Guernsey	.	439	460	466	499	511	528	531	540	538
Holstein	.	592	636	646	683	701	727	733	745	749
Jersey	.	482	529	537	562	579	605	610	625	628
Milking Shorthorn	.	433	471	474	492	493	516	512	522	528
Red and White	.	555	594	599	637	650	675	680	683	684

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