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

Table 2 Effect of pulsator ratio (60:40 and 67:33) and pulsation pattern (alternate = 2 × 2, simultaneous = 4 × 1) with WB and NB clusters on teat tissue changes (mm), mean milk yield (kg) and mean milking time (seconds) with mid-level milking - Experiment 2

Pulsator ratio	60:40	60:40	60:40	60:40	67:33	67:33	67:33	67:33
Pulsation pattern	2 × 2	4 × 1	2 × 2	4 × 1	2 × 2	4 × 1	2 × 2	4 × 1
Cluster type	WB	WB	NB	NB	WB	WB	NB	NB	s.e.d
Canal length	2.98	3.16	2.72	2.47	2.39	2.69	2.80	3.14	0.41
Teat diameter	1.47	1.76	- 0.36	- 0.09	1.10	1.04	0.40	0.04	0.38
Cistern diameter	- 7.96	- 7.38	- 7.99	- 7.44	- 7.96	- 9.17	- 6.99	- 8.12	0.68
Wall thickness	3.56	3.30	2.90	2.50	3.40	4.40	2.60	2.90	0.26
Teat length	10.37	10.44	10.53	9.22	9.60	11.00	9.60	8.50	1.50
Milk yield	16.93	17.02	16.45	15.36	17.62	17.26	16.35	16.39	0.42
Mean milking time	495	488	650	629	484	468	581	572	25.8

ISSN: 2046-0481