Abstract
Forty-eight Holstein cows were used in a randomized block design to evaluate different dry period lengths and prepartum milking frequencies (MF) on subsequent milk production, milk composition, solids-corrected milk production, dry matter intake (DMI), and energy balance. Lactating cows, milked 2 times/d, began a 7-d covariate period 35 d prior to the expected calving date. Cows were milked 0 times/d (0×), 1 time/d (1×), and 4 times/d (4×) for the last 28 d of gestation. If milk production decreased to less than 0.5 kg/milking or 1 kg/d, milking via machine ceased; however, teat stimulation continued 1 or 4 times/ d according to the treatment assignment. All cows were milked 2 times/d postpartum (wk 1 to 10). Prepartum DMI tended to be greater for 1× and 4× compared with Ox. Prepartum, cows milked 1× produced 17% less milk than cows milked 4× (5.9 and 7.1 kg/d, respectively). There were no differences in prepartum and postpartum body condition scores, body weights, and DMI. Postpartum milk production by cows following their third or greater gestation was greater for 0× and 4× compared with 1×. Postpartum milk production by cows following their second gestation was significantly decreased with increased MF (0× vs. 1× and 4×). Regardless of parity, postpartum solids-corrected milk was greater for 0× compared with 1× and 4×. Postpartum fat yield was greater for 0× vs. 4×, with 1× being intermediate. Postpartum protein yield was greater for 0× vs. 4×, whereas 0× tended to have greater protein yield than 1×. Postpartum energy balance was greater for 1× and 4× relative to 0×. Continuous milking (1× and 4×) resulted in a loss of milk production in the subsequent lactation for cows following their second gestation; however, for cows following their third or greater gestation, increasing the MF from 1× to 4× in the last 28 d of gestation alleviated the loss in milk production.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1729-1739 |
| Number of pages | 11 |
| Journal | Journal of Dairy Science |
| Volume | 90 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 1 2007 |
| Externally published | Yes |
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Keywords
- Continuous milking
- Energy balance
- Milking frequency
- Transition period
ASJC Scopus subject areas
- Food Science
- Animal Science and Zoology
- Genetics
Cite this
Effects of increasing milking frequency during the last 28 days of gestation on milk production, dry matter intake, and energy balance in dairy cows. / Rastani, R. R.; Silva Del Rio, Noelia; Gressley, T. F.; Dahl, G. E.; Grummer, R. R.
In: Journal of Dairy Science, Vol. 90, No. 4, 01.01.2007, p. 1729-1739.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of increasing milking frequency during the last 28 days of gestation on milk production, dry matter intake, and energy balance in dairy cows
AU - Rastani, R. R.
AU - Silva Del Rio, Noelia
AU - Gressley, T. F.
AU - Dahl, G. E.
AU - Grummer, R. R.
PY - 2007/1/1
Y1 - 2007/1/1
N2 - Forty-eight Holstein cows were used in a randomized block design to evaluate different dry period lengths and prepartum milking frequencies (MF) on subsequent milk production, milk composition, solids-corrected milk production, dry matter intake (DMI), and energy balance. Lactating cows, milked 2 times/d, began a 7-d covariate period 35 d prior to the expected calving date. Cows were milked 0 times/d (0×), 1 time/d (1×), and 4 times/d (4×) for the last 28 d of gestation. If milk production decreased to less than 0.5 kg/milking or 1 kg/d, milking via machine ceased; however, teat stimulation continued 1 or 4 times/ d according to the treatment assignment. All cows were milked 2 times/d postpartum (wk 1 to 10). Prepartum DMI tended to be greater for 1× and 4× compared with Ox. Prepartum, cows milked 1× produced 17% less milk than cows milked 4× (5.9 and 7.1 kg/d, respectively). There were no differences in prepartum and postpartum body condition scores, body weights, and DMI. Postpartum milk production by cows following their third or greater gestation was greater for 0× and 4× compared with 1×. Postpartum milk production by cows following their second gestation was significantly decreased with increased MF (0× vs. 1× and 4×). Regardless of parity, postpartum solids-corrected milk was greater for 0× compared with 1× and 4×. Postpartum fat yield was greater for 0× vs. 4×, with 1× being intermediate. Postpartum protein yield was greater for 0× vs. 4×, whereas 0× tended to have greater protein yield than 1×. Postpartum energy balance was greater for 1× and 4× relative to 0×. Continuous milking (1× and 4×) resulted in a loss of milk production in the subsequent lactation for cows following their second gestation; however, for cows following their third or greater gestation, increasing the MF from 1× to 4× in the last 28 d of gestation alleviated the loss in milk production.
AB - Forty-eight Holstein cows were used in a randomized block design to evaluate different dry period lengths and prepartum milking frequencies (MF) on subsequent milk production, milk composition, solids-corrected milk production, dry matter intake (DMI), and energy balance. Lactating cows, milked 2 times/d, began a 7-d covariate period 35 d prior to the expected calving date. Cows were milked 0 times/d (0×), 1 time/d (1×), and 4 times/d (4×) for the last 28 d of gestation. If milk production decreased to less than 0.5 kg/milking or 1 kg/d, milking via machine ceased; however, teat stimulation continued 1 or 4 times/ d according to the treatment assignment. All cows were milked 2 times/d postpartum (wk 1 to 10). Prepartum DMI tended to be greater for 1× and 4× compared with Ox. Prepartum, cows milked 1× produced 17% less milk than cows milked 4× (5.9 and 7.1 kg/d, respectively). There were no differences in prepartum and postpartum body condition scores, body weights, and DMI. Postpartum milk production by cows following their third or greater gestation was greater for 0× and 4× compared with 1×. Postpartum milk production by cows following their second gestation was significantly decreased with increased MF (0× vs. 1× and 4×). Regardless of parity, postpartum solids-corrected milk was greater for 0× compared with 1× and 4×. Postpartum fat yield was greater for 0× vs. 4×, with 1× being intermediate. Postpartum protein yield was greater for 0× vs. 4×, whereas 0× tended to have greater protein yield than 1×. Postpartum energy balance was greater for 1× and 4× relative to 0×. Continuous milking (1× and 4×) resulted in a loss of milk production in the subsequent lactation for cows following their second gestation; however, for cows following their third or greater gestation, increasing the MF from 1× to 4× in the last 28 d of gestation alleviated the loss in milk production.
KW - Continuous milking
KW - Energy balance
KW - Milking frequency
KW - Transition period
UR - http://www.scopus.com/inward/record.url?scp=35748972933&partnerID=8YFLogxK
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U2 - 10.3168/jds.2006-475
DO - 10.3168/jds.2006-475
M3 - Article
VL - 90
SP - 1729
EP - 1739
JO - Journal of Dairy Science
JF - Journal of Dairy Science
SN - 0022-0302
IS - 4
ER -