State and National Standardized Lactation Averages by Breed

AIPL RESEARCH REPORT
K2-03 (2-05)

State and National Standardized Lactation Averages by Breed for Cows Calving in 2003

A.H. Sanders and R.L. Powell
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 2005 State and national lactation averages report were from calvings in 2003. 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 for records contributing to genetic evaluations is at or near 100% except in California (89% for Guernseys, and 87% for Holsteins and Red and Whites) and Nevada (91% for Holsteins).

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 2004 actually calved in 2004. 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.

Both Ayrshire and Holstein calvings for 2003 were down from last year's slight increases (3% and 2%, respectively), falling almost to or below numbers from 2001. Calvings for Guernsey, and Red and White continue to decline, dropping by 5% and 10%, repectively since the previous year. After record setting growth last year, the Jersey breed still had a slight increase (0.4%) in calvings in 2003. Number of Milking Shorthorn calvings was at a eight-year high, increasing by 3% over the previous year.

For the second year, milk yield was essentially unchanged. Fat and protein production were also generally unchanged from the previous year. For all breeds, yields were within 1% of last year's values. While feed availability and 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 such as health and longevity. For instance, average somatic cell count during 2004 was below 300,000 cells/ml for the first time in 10 years (Herd somatic cell count report). Interpretation of trends in lactation averages should be made in view of other changes affecting profitability.

DHI Lactation Averages for Ayrshire

Table 1. Ayrshire State and National Standardized Lactation Averages for Cows Calving in 2003 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	3	16,413	3.15	518	3.04	499	100
Arkansas	32	17,932	3.57	640	3.18	570	100
California	47	19,849	3.71	736	3.17	629	100
Colorado	6	19,468	3.37	657	2.94	572	100
Connecticut	109	19,776	4.03	797	3.21	635	100
Delaware	3	15,883	4.28	680	3.32	528	100
Florida	3	16,384	3.36	550	3.01	494	100
Idaho	1	14,818	4.10	607	3.31	491	100
Illinois	223	18,372	3.73	686	3.14	576	100
Indiana	89	16,640	3.76	625	3.18	529	100
Iowa	555	19,629	3.81	747	3.16	620	100
Kansas	82	16,678	3.68	614	3.18	531	100
Kentucky	68	15,129	3.64	551	3.17	479	100
Louisiana	17	15,602	3.44	537	2.88	450	100
Maine	124	17,237	3.80	654	3.02	521	100
Maryland	334	19,619	4.06	797	3.15	618	100
Massachusetts	14	18,327	3.74	685	3.12	573	100
Michigan	45	20,688	3.76	778	3.10	641	100
Minnesota	206	16,523	3.81	630	3.10	511	100
Mississippi	1	20,195	3.39	685	2.88	581	100
Missouri	99	14,928	3.78	565	3.14	468	100
Nebraska	70	16,848	3.84	647	3.13	527	100
New Hampshire	132	19,403	3.79	736	3.12	606	100
New Jersey	8	17,374	4.23	735	3.04	528	100
New Mexico	313	14,800	3.67	543	3.17	469	100
New York	1,173	17,389	3.87	673	3.10	538	100
North Carolina	77	14,202	4.01	569	3.01	428	100
North Dakota	9	18,166	3.82	695	3.15	572	100
Ohio	424	17,783	3.80	675	3.14	559	100
Oklahoma	91	20,459	3.53	722	3.08	630	100
Oregon	45	18,147	3.83	695	3.13	568	100
Pennsylvania	919	17,889	3.85	689	3.13	561	100
Rhode Island	20	14,098	4.01	566	3.10	437	100
South Carolina	8	17,985	3.88	698	3.09	556	100
Tennessee	36	15,224	3.75	571	3.13	476	100
Texas	73	17,626	4.13	728	3.35	591	100
Utah	23	14,360	4.47	642	3.36	483	100
Vermont	414	17,818	3.87	690	3.13	557	100
Virginia	61	14,207	3.66	520	3.14	446	100
Washington	13	18,232	3.80	693	3.20	584	100
West Virginia	55	15,758	3.79	598	3.11	490	100
Wisconsin	531	18,226	3.84	701	3.11	567	100
US	6,556	17,738	3.84	681	3.13	555	100

 Return to the AIPL Home page

DHI Lactation Averages for Brown Swiss

Table 2. Brown Swiss State and National Standardized Lactation Averages for Cows Calving in 2003 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	5	22,443	3.61	811	3.03	679	100
Arizona	205	21,934	3.96	868	3.24	709	>99
Arkansas	134	17,734	3.67	650	3.31	588	100
California	462	21,296	3.89	829	3.36	714	99
Colorado	36	23,302	4.05	945	3.16	736	100
Connecticut	45	19,341	3.94	763	3.27	632	100
Delaware	25	16,414	4.28	703	3.20	525	100
Florida	12	17,290	4.08	706	3.45	596	100
Georgia	61	18,530	3.89	720	3.26	603	100
Idaho	204	22,556	3.94	888	3.38	762	100
Illinois	557	21,061	4.01	844	3.31	697	100
Indiana	473	22,724	4.07	926	3.33	758	100
Iowa	1,447	21,775	4.04	880	3.31	722	100
Kansas	221	21,555	3.84	829	3.40	734	100
Kentucky	124	19,408	3.63	705	3.26	632	100
Louisiana	33	16,167	3.72	601	3.20	518	100
Maine	35	16,581	3.79	628	3.29	546	100
Maryland	355	20,723	3.98	825	3.28	679	100
Massachusetts	69	19,394	4.13	801	3.36	652	100
Michigan	271	23,949	3.99	956	3.32	795	100
Minnesota	1,243	20,276	4.06	822	3.30	669	100
Mississippi	8	18,286	3.66	670	3.16	579	100
Missouri	401	20,133	3.90	786	3.36	677	100
Montana	21	14,786	3.87	573	3.35	496	100
Nebraska	206	21,379	3.88	829	3.25	694	100
New Hampshire	116	18,409	3.89	717	3.29	605	100
New Jersey	9	18,708	4.25	796	3.30	617	100
New Mexico	17	21,443	3.82	819	3.42	734	100
New York	933	19,820	3.99	790	3.26	646	100
North Carolina	59	21,373	3.95	844	3.20	684	100
North Dakota	71	17,705	3.93	696	3.34	592	100
Ohio	1,444	20,545	4.05	831	3.34	687	100
Oklahoma	112	17,553	3.77	662	3.32	583	100
Oregon	247	21,423	4.10	878	3.32	712	100
Pennsylvania	1,212	20,364	3.95	804	3.27	665	100
Puerto Rico	160	13,987	3.15	440	3.28	458	100
South Carolina	11	19,037	3.83	729	3.23	614	100
South Dakota	226	19,242	4.15	799	3.34	643	100
Tennessee	269	16,947	4.22	716	3.34	566	100
Texas	510	20,325	3.96	806	3.34	680	100
Utah	73	16,581	4.43	735	3.40	564	100
Vermont	327	20,179	4.16	840	3.32	669	100
Virginia	137	22,344	3.68	822	3.24	725	100
Washington	239	21,547	3.81	821	3.37	726	100
West Virginia	8	18,030	3.98	718	3.33	600	100
Wisconsin	2,946	21,459	4.03	864	3.29	706	100
US	15,779	20,715	3.99	827	3.31	685	>99

 Return to the AIPL Home page

DHI Lactation Averages for Guernsey

Table 3. Guernsey State and National Standardized Lactation Averages for Cows Calving in 2003 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	1	19,860	3.62	719	3.21	638	100
Arizona	23	18,193	3.96	720	3.12	568	100
Arkansas	45	13,857	4.44	615	3.37	467	100
California	414	18,011	4.31	777	3.37	616	89
Colorado	2	16,453	4.40	725	3.17	522	100
Connecticut	49	16,434	4.48	737	3.32	546	100
Delaware	2	17,651	4.24	749	3.14	554	100
Florida	37	15,852	4.37	693	3.21	508	100
Georgia	10	15,086	3.36	507	3.23	488	100
Idaho	19	16,341	4.31	705	3.37	550	100
Illinois	188	17,430	4.48	781	3.23	563	100
Indiana	328	16,573	4.41	731	3.32	550	100
Iowa	547	17,873	4.47	799	3.27	585	100
Kansas	55	16,037	4.45	714	3.40	545	100
Kentucky	32	16,579	4.00	663	3.22	534	100
Louisiana	47	15,008	4.48	672	3.29	494	100
Maine	30	15,359	4.67	718	3.38	519	100
Maryland	353	16,215	4.67	758	3.34	542	100
Massachusetts	4	15,998	4.24	679	3.26	521	100
Michigan	24	16,651	4.17	695	3.21	534	100
Minnesota	400	14,890	4.42	658	3.26	486	100
Missouri	329	14,965	4.37	654	3.38	506	100
Montana	1	17,878	4.31	771	3.26	583	100
Nebraska	74	18,503	4.40	815	3.22	597	100
New Hampshire	21	16,890	4.49	758	3.32	561	100
New Jersey	2	20,157	4.92	992	3.25	656	100
New York	545	15,780	4.49	709	3.26	515	100
North Carolina	74	16,155	4.35	702	3.25	525	100
Ohio	329	16,489	4.41	728	3.30	543	100
Oklahoma	77	15,644	4.01	628	3.25	509	100
Oregon	365	17,954	4.42	794	3.27	586	100
Pennsylvania	895	15,970	4.41	704	3.25	518	100
South Carolina	43	15,486	4.41	682	3.26	504	100
South Dakota	59	14,127	4.25	600	3.22	456	100
Tennessee	82	17,361	4.30	747	3.24	563	100
Texas	72	16,042	4.20	674	3.22	517	100
Utah	11	17,774	4.31	767	3.50	623	100
Vermont	154	15,822	4.41	698	3.26	516	100
Virginia	123	15,075	4.57	689	3.25	490	100
Washington	142	16,767	4.51	756	3.36	563	100
West Virginia	28	15,158	4.51	683	3.47	526	100
Wisconsin	1,844	16,689	4.48	747	3.28	548	>99
US	7,880	16,469	4.44	731	3.29	541	99

 Return to the AIPL Home page

DHI Lactation Averages for Holstein

Table 4. Holstein State and National Standardized Lactation Averages for Cows Calving in 2003 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	1,314	21,400	3.30	706	2.95	631	100
Arizona	17,531	23,682	3.51	831	2.99	707	100
Arkansas	1,635	21,091	3.47	733	3.02	636	100
California	340723	25,928	3.59	931	3.05	791	87
Colorado	11,345	25,482	3.55	906	3.07	783	>99
Connecticut	6,805	24,933	3.53	879	3.01	750	100
Delaware	2,502	23,060	3.72	857	3.03	698	100
Florida	6,465	22,730	3.62	823	3.01	685	100
Georgia	8,893	22,249	3.54	788	2.95	657	>99
Idaho	31,661	26,183	3.56	931	3.05	798	100
Illinois	24,851	24,258	3.65	886	3.01	730	100
Indiana	15,806	24,169	3.71	897	3.00	726	>99
Iowa	42,951	24,844	3.65	908	3.01	749	>99
Kansas	12,044	23,723	3.65	865	3.03	720	100
Kentucky	6,554	22,402	3.55	796	3.01	675	100
Louisiana	2,927	20,584	3.41	701	2.99	615	100
Maine	6,026	24,512	3.65	895	3.00	735	100
Maryland	20,599	23,116	3.77	871	3.02	697	>99
Massachusetts	5,121	25,050	3.67	919	3.01	754	>99
Michigan	55,307	26,278	3.75	984	2.98	784	>99
Minnesota	116471	24,293	3.71	902	3.00	728	>99
Mississippi	3,499	22,897	3.59	822	2.95	676	100
Missouri	11,162	21,865	3.61	788	3.05	667	>99
Montana	3,220	26,066	3.52	916	2.95	769	100
Nebraska	9,691	24,241	3.68	893	3.04	736	>99
Nevada	3,499	25,495	3.58	913	3.05	774	91
New Hampshire	5,851	26,233	3.63	951	3.01	790	100
New Jersey	3,880	24,165	3.85	930	3.00	725	100
New Mexico	12,168	25,278	3.46	874	3.02	762	100
New York	158454	24,372	3.66	893	2.98	727	>99
North Carolina	12,323	23,690	3.59	851	2.97	703	100
North Dakota	2,544	23,624	3.72	880	2.99	705	100
Ohio	42,541	23,861	3.70	882	3.02	721	100
Oklahoma	3,772	22,624	3.35	759	3.01	682	100
Oregon	17,536	26,001	3.71	964	3.04	790	>99
Pennsylvania	162868	23,992	3.65	875	2.99	718	>99
Puerto Rico	3,202	14,757	2.98	440	2.99	442	100
Rhode Island	153	23,339	3.58	835	3.06	714	100
South Carolina	5,451	22,599	3.56	806	2.98	673	100
South Dakota	7,346	23,946	3.73	894	3.01	720	>99
Tennessee	8,228	22,662	3.58	812	2.95	669	>99
Texas	23,609	24,014	3.65	877	3.03	728	100
Utah	12,796	25,836	3.54	916	3.01	777	100
Vermont	25,077	24,680	3.69	911	3.01	743	100
Virginia	33,915	23,519	3.58	841	2.97	698	100
Washington	31,778	26,223	3.65	956	3.03	794	100
West Virginia	3,053	22,402	3.65	817	3.01	674	100
Wisconsin	219212	25,624	3.71	949	2.99	766	>99
Wyoming	19	16,271	4.11	668	3.23	526	100
US	1.56E6	24,876	3.65	907	3.01	748	97

 Return to the AIPL Home page

DHI Lactation Averages for Jersey

Table 5. Jersey State and National Standardized Lactation Averages for Cows Calving in 2003 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	1,631	16,335	4.51	736	3.62	591	100
Arizona	4,895	17,684	4.67	826	3.44	608	>99
Arkansas	445	15,642	4.32	676	3.65	572	100
California	33,781	18,751	4.61	864	3.59	674	99
Colorado	189	19,662	4.60	904	3.48	684	100
Connecticut	394	17,289	4.60	796	3.54	611	100
Delaware	67	15,527	4.67	725	3.47	539	100
Florida	214	15,132	4.48	678	3.42	518	100
Georgia	718	15,268	4.34	662	3.44	525	100
Idaho	3,106	17,925	4.62	828	3.65	655	100
Illinois	1,073	16,059	4.63	744	3.54	569	100
Indiana	993	17,092	4.58	783	3.52	602	100
Iowa	3,058	17,882	4.65	831	3.55	635	100
Kansas	949	16,336	4.50	735	3.54	578	100
Kentucky	983	14,878	4.34	646	3.55	528	100
Louisiana	247	15,645	3.70	579	3.45	540	100
Maine	641	16,589	4.78	793	3.58	594	100
Maryland	963	16,817	4.63	778	3.57	601	100
Massachusetts	714	17,126	4.66	798	3.54	606	100
Michigan	1,314	16,172	4.73	764	3.57	577	100
Minnesota	2,132	16,352	4.70	768	3.56	583	100
Mississippi	543	16,607	4.44	737	3.51	582	100
Missouri	1,337	15,726	4.48	705	3.58	564	100
Montana	5	17,620	4.42	778	3.47	611	100
Nebraska	346	18,475	4.41	815	3.56	658	100
Nevada	355	17,739	4.85	861	3.50	620	100
New Hampshire	547	17,894	4.64	831	3.64	651	100
New Jersey	72	15,696	5.15	808	3.51	551	100
New Mexico	605	17,410	4.64	807	3.61	628	100
New York	5,611	17,331	4.60	797	3.51	608	100
North Carolina	2,069	18,813	4.37	821	3.48	655	100
North Dakota	41	15,526	4.44	690	3.58	556	100
Ohio	6,579	17,300	4.74	820	3.60	623	100
Oklahoma	403	16,199	4.28	693	3.55	576	100
Oregon	7,190	18,640	4.65	867	3.55	661	>99
Pennsylvania	6,962	16,363	4.65	760	3.51	575	100
Puerto Rico	133	12,891	3.44	443	3.60	465	100
Rhode Island	5	19,077	4.15	791	3.47	663	100
South Carolina	2,236	18,014	4.44	800	3.46	623	100
South Dakota	338	18,498	4.91	908	3.44	637	100
Tennessee	2,071	16,758	4.60	771	3.50	586	100
Texas	5,888	15,864	4.50	713	3.58	568	100
Utah	1,067	17,681	4.48	792	3.62	640	100
Vermont	2,803	16,114	4.73	762	3.57	575	100
Virginia	1,129	16,911	4.56	771	3.56	601	100
Washington	2,256	17,825	4.52	805	3.61	644	100
West Virginia	303	17,669	4.56	805	3.68	650	100
Wisconsin	6,550	17,486	4.73	826	3.58	626	100
US	115951	17,612	4.61	812	3.56	627	>99

 Return to the AIPL Home page

DHI Lactation Averages for Milking Shorthorn

Table 6. Milking Shorthorn State and National Standardized Lactation Averages for Cows Calving in 2003 With
Records Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Alabama	1	12,866	3.33	429	3.37	434	100
Arizona	243	13,176	3.50	461	3.00	395	100
Arkansas	33	17,287	3.53	610	3.22	556	100
California	152	19,069	3.55	678	3.05	582	99
Colorado	2	21,489	2.87	617	2.91	626	100
Connecticut	7	16,822	3.46	581	2.94	494	100
Idaho	98	22,371	3.25	727	3.09	692	100
Illinois	36	18,600	3.33	619	3.12	580	100
Indiana	18	16,441	3.83	630	3.16	519	100
Iowa	141	16,208	3.61	584	3.03	490	100
Kansas	42	19,835	3.55	704	3.14	623	100
Maine	32	15,734	3.45	543	2.99	470	100
Maryland	24	14,594	3.71	542	3.20	467	100
Massachusetts	6	17,540	3.43	601	2.95	518	100
Michigan	4	17,877	3.87	691	3.12	557	100
Minnesota	490	17,928	3.67	658	3.10	556	100
Missouri	87	15,550	3.62	562	3.20	497	100
Nebraska	21	16,198	3.61	585	3.24	525	100
New Hampshire	70	18,657	3.49	651	2.98	556	100
New York	79	17,386	3.56	618	3.03	528	100
North Carolina	7	17,746	4.02	714	3.27	580	100
North Dakota	10	17,630	4.00	706	3.18	561	100
Ohio	62	14,972	3.34	500	3.09	463	100
Oklahoma	214	16,495	3.43	566	3.08	508	100
Oregon	68	17,607	3.53	621	3.04	535	100
Pennsylvania	77	17,447	3.65	637	3.05	532	100
South Dakota	21	13,474	3.68	496	3.21	433	100
Texas	100	19,298	3.59	692	3.18	615	100
Utah	40	14,774	3.69	544	3.26	482	100
Vermont	67	15,750	3.64	573	3.02	475	100
Virginia	17	17,260	3.45	595	3.08	532	100
Washington	125	20,670	3.50	724	3.07	634	100
Wisconsin	225	18,569	3.72	690	3.04	565	100
US	2,619	17,381	3.57	620	3.08	535	>99

 Return to the AIPL Home page

DHI Lactation Averages for Red & White

Table 7. Red & White State and National Standardized Lactation Averages for Cows Calving in 2003 With Records
Used in National Genetic Evaluations.

	Records	Milk	Fat		Protein
State	(no.)	(lb)	(%)	(lb)	(%)	(lb)	Reporting
Arkansas	3	17,897	3.43	614	2.93	524	100
California	246	21,680	3.62	786	3.05	652	87
Colorado	14	23,929	3.38	809	2.74	655	100
Connecticut	3	26,695	3.04	812	2.82	754	100
Georgia	2	19,552	3.59	701	3.03	592	100
Idaho	25	25,013	3.38	846	3.10	774	100
Illinois	98	22,560	3.71	838	2.98	673	100
Indiana	8	24,200	4.27	1034	2.95	715	100
Iowa	37	25,630	3.64	933	2.97	761	100
Kansas	14	20,499	3.49	716	3.14	643	100
Kentucky	17	20,287	3.73	756	3.04	617	100
Maine	3	20,792	3.17	659	2.64	549	100
Maryland	17	21,244	4.02	854	2.89	615	100
Massachusetts	3	20,607	3.57	735	2.97	613	100
Michigan	367	24,022	3.78	908	3.04	730	100
Minnesota	400	23,117	3.68	851	2.95	682	100
Mississippi	1	13,750	3.99	549	2.81	386	100
Missouri	2	16,987	3.51	596	3.03	516	100
Nebraska	2	18,379	3.61	664	3.34	614	100
New Hampshire	5	27,973	3.54	991	2.95	825	100
New York	363	22,195	3.64	808	2.94	652	100
North Carolina	5	20,036	4.02	806	3.05	611	100
North Dakota	5	24,296	3.39	824	2.98	725	100
Ohio	42	20,155	3.60	725	3.04	613	100
Oklahoma	2	17,335	4.10	711	3.24	561	100
Oregon	14	21,311	3.73	794	2.98	635	100
Pennsylvania	304	22,653	3.67	832	3.00	680	100
Puerto Rico	64	14,457	3.16	457	2.99	432	100
South Carolina	100	25,589	3.46	885	3.01	770	100
Texas	3	21,620	3.84	831	3.12	674	100
Utah	1	15,284	4.53	692	3.68	563	100
Vermont	16	20,726	3.72	770	2.96	614	100
Virginia	170	23,189	3.56	825	2.98	691	100
Washington	4	26,386	3.62	955	2.99	789	100
Wisconsin	642	23,883	3.63	868	2.92	697	100
US	3,002	22,933	3.65	837	2.97	682	99

 Return to the AIPL Home page

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	2003
Ayrshire	13,465	11,576	9,526	8,824	8,176	7,617	7,399	7,035	6,552	6,755	6,556
Brown Swiss	17,236	17,717	17,721	16,977	16,245	15,499	15,677	15,704	15,473	15,639	15,779
Guernsey	38,364	25,805	15,420	13,454	11,944	10,796	10,273	9,406	8,690	8,293	7,880
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	1,564,378
Jersey	63,305	99,416	105,672	102,559	100,213	99,853	104,460	106,837	108,934	115,472	115,951
Milking Shorthorn	2,320	2,684	2,662	2,483	2,445	2,326	2,436	2,407	2,323	2,534	2,619
Red and White	900	5,588	6,281	5,673	5,242	4,595	4,297	3,927	3,578	3,334	3,002

 Return to the AIPL Home page

	Table 8B. Milk (lbs)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002	2003
Ayrshire	13,144	14,799	15,684	15,647	16,611	16,932	17,424	17,389	17,878	17,880	17,738
Brown Swiss	14,172	16,250	17,493	17,818	18,782	19,386	20,148	20,300	20,694	20,869	20,715
Guernsey	11,666	13,297	14,051	14,177	15,132	15,546	15,963	16,043	16,410	16,398	16,469
Holstein	17,566	20,178	21,618	21,926	23,143	23,675	24,380	24,517	24,889	24,996	24,876
Jersey	11,437	13,407	14,842	15,097	15,838	16,294	16,940	17,038	17,472	17,663	17,612
Milking Shorthorn	11,560	14,011	15,341	15,464	16,007	16,109	16,704	16,548	17,008	17,144	17,381
Red and White	16,470	18,832	20,161	20,310	21,423	22,019	22,732	22,845	22,981	23,102	22,933

 Return to the AIPL Home page

	Table 8C. Fat (%)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002	2003
Ayrshire	3.88	3.85	3.86	3.86	3.86	3.86	3.87	3.86	3.84	3.85	3.84
Brown Swiss	4.06	3.98	4.01	4.01	4.01	3.98	4.01	4.01	4.00	4.01	3.99
Guernsey	4.60	4.49	4.49	4.48	4.47	4.44	4.47	4.46	4.44	4.45	4.44
Holstein	3.61	3.61	3.64	3.63	3.62	3.63	3.65	3.64	3.63	3.65	3.65
Jersey	4.84	4.73	4.64	4.64	4.64	4.62	4.61	4.60	4.59	4.61	4.61
Milking Shorthorn	3.69	3.58	3.58	3.58	3.59	3.55	3.57	3.59	3.57	3.58	3.57
Red and White	3.62	3.67	3.68	3.69	3.66	3.64	3.64	3.66	3.65	3.65	3.65

 Return to the AIPL Home page

	Table 8D. Fat (lbs)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002	2003
Ayrshire	510	570	605	605	642	653	674	671	687	689	681
Brown Swiss	576	646	701	715	752	771	807	814	827	837	827
Guernsey	536	598	630	635	676	690	713	716	728	730	731
Holstein	633	729	786	798	838	859	890	893	904	911	907
Jersey	553	634	689	700	734	753	781	784	802	814	812
Milking Shorthorn	426	502	549	554	574	572	596	595	608	614	620
Red and White	596	692	742	750	785	801	828	837	839	843	837

 Return to the AIPL Home page

	Table 8E. Protein (%)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002	2003
Ayrshire	.	3.16	3.13	3.13	3.12	3.11	3.13	3.13	3.12	3.12	3.13
Brown Swiss	.	3.33	3.32	3.32	3.32	3.30	3.31	3.31	3.30	3.30	3.31
Guernsey	.	3.30	3.27	3.29	3.30	3.29	3.31	3.31	3.29	3.28	3.29
Holstein	.	2.94	2.94	2.94	2.96	2.96	2.99	3.00	3.00	3.00	3.01
Jersey	.	3.60	3.56	3.56	3.55	3.55	3.57	3.58	3.57	3.55	3.56
Milking Shorthorn	.	3.09	3.07	3.06	3.07	3.06	3.09	3.10	3.07	3.08	3.08
Red and White	.	2.95	2.94	2.95	2.97	2.96	2.97	2.98	2.97	2.96	2.97

 Return to the AIPL Home page

	Table 8F. Protein (lbs)
	Calving Year
Breed	1980	1990	1995	1996	1997	1998	1999	2000	2001	2002	2003
Ayrshire	.	468	491	490	518	527	545	545	558	558	555
Brown Swiss	.	541	581	592	623	639	667	672	683	688	685
Guernsey	.	439	460	466	499	511	528	531	540	538	541
Holstein	.	592	636	646	683	701	727	733	745	749	748
Jersey	.	482	529	537	562	579	605	610	625	628	627
Milking Shorthorn	.	433	471	474	492	493	516	512	522	528	535
Red and White	.	555	594	599	637	650	675	680	683	684	682

 Return to the AIPL Home page