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	1970	1980	1990	1995	1996	1997	1998	1999	2000
Ayrshire	12,729	13,465	11,576	9,526	8,824	8,176	7,617	7,399	7,035
Brown Swiss	13,764	17,236	17,717	17,721	16,977	16,245	15,499	15,677	15,704
Guernsey	56,828	38,364	25,805	15,420	13,454	11,944	10,796	10,273	9,406
Holstein	588,748	1,109,758	1,720,127	1,769,002	1,722,958	1,701,669	1,641,948	1,668,927	1,624,058
Jersey	51,410	63,305	99,416	105,672	102,559	100,213	99,853	104,460	106,837
Milking Shorthorn	1,561	2,320	2,684	2,662	2,483	2,445	2,326	2,436	2,407
Red and White	.	900	5,588	6,281	5,673	5,242	4,595	4,297	3,927

 

 

	Table 8B. Milk (lbs)
	Calving Year
Breed	1970	1980	1990	1995	1996	1997	1998	1999	2000
Ayrshire	11,971	13,144	14,799	15,684	15,647	16,611	16,932	17,424	17,389
Brown Swiss	12,866	14,172	16,250	17,493	17,818	18,782	19,386	20,148	20,300
Guernsey	10,426	11,666	13,297	14,051	14,177	15,132	15,546	15,963	16,043
Holstein	15,281	17,566	20,178	21,618	21,926	23,143	23,675	24,380	24,517
Jersey	9,618	11,437	13,407	14,842	15,097	15,838	16,294	16,940	17,038
Milking Shorthorn	10,391	11,560	14,011	15,341	15,464	16,007	16,109	16,704	16,548
Red and White	.	16,470	18,832	20,161	20,310	21,423	22,019	22,732	22,845

 

 

	Table 8C. Fat (%)
	Calving Year
Breed	1970	1980	1990	1995	1996	1997	1998	1999	2000
Ayrshire	3.93	3.88	3.85	3.86	3.86	3.86	3.86	3.87	3.86
Brown Swiss	4.08	4.06	3.98	4.01	4.01	4.01	3.98	4.01	4.01
Guernsey	4.68	4.60	4.49	4.49	4.48	4.47	4.44	4.47	4.46
Holstein	3.66	3.61	3.61	3.64	3.63	3.62	3.63	3.65	3.64
Jersey	5.06	4.84	4.73	4.64	4.64	4.64	4.62	4.61	4.60
Milking Shorthorn	3.70	3.69	3.58	3.58	3.58	3.59	3.55	3.57	3.59
Red and White	.	3.62	3.67	3.68	3.69	3.66	3.64	3.64	3.66

 

 

	Table 8D. Fat (lbs)
	Calving Year
Breed	1970	1980	1990	1995	1996	1997	1998	1999	2000
Ayrshire	470	510	570	605	605	642	653	674	671
Brown Swiss	525	576	646	701	715	752	771	807	814
Guernsey	488	536	598	630	635	676	690	713	716
Holstein	559	633	729	786	798	838	859	890	893
Jersey	487	553	634	689	700	734	753	781	784
Milking Shorthorn	384	426	502	549	554	574	572	596	595
Red and White	.	596	692	742	750	785	801	828	837

 

 

	Table 8E. Protein (%)
	Calving Year
Breed	1970	1980	1990	1995	1996	1997	1998	1999	2000
Ayrshire	.	.	3.16	3.13	3.13	3.12	3.11	3.13	3.13
Brown Swiss	.	.	3.33	3.32	3.32	3.32	3.30	3.31	3.31
Guernsey	.	.	3.30	3.27	3.29	3.30	3.29	3.31	3.31
Holstein	.	.	2.94	2.94	2.94	2.96	2.96	2.99	3.00
Jersey	.	.	3.60	3.56	3.56	3.55	3.55	3.57	3.58
Milking Shorthorn	.	.	3.09	3.07	3.06	3.07	3.06	3.09	3.10
Red and White	.	.	2.95	2.94	2.95	2.97	2.96	2.97	2.98

 

 

	Table 8F. Protein (lbs)
	Calving Year
Breed	1970	1980	1990	1995	1996	1997	1998	1999	2000
Ayrshire	.	.	468	491	490	518	527	545	545
Brown Swiss	.	.	541	581	592	623	639	667	672
Guernsey	.	.	439	460	466	499	511	528	531
Holstein	.	.	592	636	646	683	701	727	733
Jersey	.	.	482	529	537	562	579	605	610
Milking Shorthorn	.	.	433	471	474	492	493	516	512
Red and White	.	.	555	594	599	637	650	675	680