Irish Veterinary Journal

Table 1a Effect of cluster type and plant vacuum level (kPa) on mean teat-tissue changes (mm) directly after milking and 15 minutes later - Experiment 1

From: Effect of liner design, pulsator setting, and vacuum level on bovine teat tissue changes and milking characteristics as measured by ultrasonography

	Cluster type			Plant vacuum level
	WB	NB	s.e.d	40	44	50	s.e.d
Canal length	3.50	3.38	0.24	3.31	3.59	3.42	0.29
Canal length (15 min)	3.61^a	2.95^c	0.26	3.07	3.57	3.20	0.32
Teat diameter	0.46^a	1.00^b	0.27	0.73	1.11	0.35	0.33
Teat diameter (15 min)	0.45^a	0.98^b	0.18	0.60^a	1.10^b	0.37^a	0.22
Cistern diameter	7.37^a	8.20^c	0.30	-7.67	-7.94	-7.74	0.37
Cistern diameter (15 min)	7.95^a	6.73^d	0.23	-7.25	-7.41	-7.36	0.28
Wall thickness	3.82^a	2.81^d	0.19	3.14	3.62	3.18	0.24
Wall thickness (15 min)	3.50^a	2.68^d	0.14	2.69	3.34	3.06	0.17
Teat length	11.07^a	7.68^c	1.06	10.19	8.17	9.77	1.30
Teat length (15 min)	2.03^a	4.53^c	0.82	3.71	2.67	3.46	1.01
Mean milk yield (kg)	17.66	17.83	0.36	17.66	17.60	17.98	0.44

s.e.d.: standard error difference
Values with different superscripts, within rows, for cluster type and plant vacuum differ significantly, ^ab P < 0.05,^ac P < 0.01,^ad P < 0.001.

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ISSN: 2046-0481

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