Dairy Sheep Symposium - the Department of Animal Sciences ...
Dairy Sheep Symposium - the Department of Animal Sciences ... Dairy Sheep Symposium - the Department of Animal Sciences ...
Table 3. Simulation of parlor throughput, milking efficiency, relative economic returns, and overmilking rate for East Friesian-crossbred dairy ewes in mid- to late-lactation milked in a 1 x 12 Casse system parlor with or without stripping, and by one or two milking technicians. Factor Stripping treatment S S NS NS No. Technicians 1 2 1 2 Parlor entry time 1 , s 45 45 45 45 Milking procedure time 1 , s 344 237 207 186 Parlor exit time 1 , s 30 30 30 30 Parlor time 1 , s 419 312 282 261 Parlor time 1 , min 6.98 5.20 4.70 4.35 Parlor throughput, ewes/hr 103 138 153 166 Milk yield, kg/ewe 0.80 0.80 0.68 0.68 Milking efficiency, kg/hr 82.4 110.4 104.0 112.9 Total receipts 2 , $/hr 108.77 145.73 137.28 149.03 Additional expenses 3 , $/hr - 21.95 18.50 32.31 Relative receipts 4 , $/hr 108.77 123.78 118.78 116.72 Ewes overmilked, no. 11/12 4/12 0/12 0/12 1 For a group of 12 ewes. 2 Receipts from milk sales = $1.32/kg. 3 Additional expenses relative to the S system with one milking technician: Labor costs = $9.00/hr; ewe purchase, management, and feed costs = $0.37 per ewe. 4 Total receipts – additional expenses.
A B milk yield, kg machine milk yield, kg 2.8 2.4 2.0 1.6 1.2 0.8 * 0.4 60 80 100 120 140 160 1.4 1.2 1.0 0.8 0.6 0.4 60 80 100 120 140 160 days in lactation Figure 1. Test-day commercial milk yield (panel A) and morning machine milk yield (the amount of milk obtained without or prior to stripping, panel B), for the two treatment groups: NS ewes ( , n = 24) were not machine stripped from d 80 to the end of lactation; S ewes ( , n = 24) were machine stripped. The dotted line indicates the start of the experiment. * indicates a significant difference among treatments (P < 0.05) * * *
- Page 85 and 86: McHattie I., Fraser C., Thompson J.
- Page 87 and 88: Peart J.N. (1970). The influence of
- Page 89 and 90: Ranieri M.S. (1993). La variazione
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- Page 95 and 96: ing, the cheeses were brined for 18
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Table 3. Simulation <strong>of</strong> parlor throughput, milking efficiency, relative economic returns,<br />
and overmilking rate for East Friesian-crossbred dairy ewes in mid- to late-lactation<br />
milked in a 1 x 12 Casse system parlor with or without stripping, and by one or two<br />
milking technicians.<br />
Factor<br />
Stripping treatment S S NS NS<br />
No. Technicians 1 2 1 2<br />
Parlor entry time 1 , s 45 45 45 45<br />
Milking procedure time 1 , s 344 237 207 186<br />
Parlor exit time 1 , s 30 30 30 30<br />
Parlor time 1 , s 419 312 282 261<br />
Parlor time 1 , min 6.98 5.20 4.70 4.35<br />
Parlor throughput, ewes/hr 103 138 153 166<br />
Milk yield, kg/ewe 0.80 0.80 0.68 0.68<br />
Milking efficiency, kg/hr 82.4 110.4 104.0 112.9<br />
Total receipts 2 , $/hr 108.77 145.73 137.28 149.03<br />
Additional expenses 3 , $/hr - 21.95 18.50 32.31<br />
Relative receipts 4 , $/hr 108.77 123.78 118.78 116.72<br />
Ewes overmilked, no. 11/12 4/12 0/12 0/12<br />
1 For a group <strong>of</strong> 12 ewes.<br />
2 Receipts from milk sales = $1.32/kg.<br />
3 Additional expenses relative to <strong>the</strong> S system with one milking technician: Labor costs =<br />
$9.00/hr; ewe purchase, management, and feed costs = $0.37 per ewe.<br />
4 Total receipts – additional expenses.
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