Dairy Sheep Symposium - the Department of Animal Sciences ...
Dairy Sheep Symposium - the Department of Animal Sciences ... Dairy Sheep Symposium - the Department of Animal Sciences ...
dimanche soir sur les brebis de race Préalpes du Sud. Ann. Zootech. 23:435-444. Labussière, J. 1988. Review of the physiological and anatomical factors influencing the milking ability of ewes and the organization of milking. Livest. Prod. Sci. 18:253-274. Labussière, J. 1993. Physiologie de l’éjection du lait: conséquences sur la traite. Pages 259-294 in Biologie de la Lactation. INRA, Service de Publications, Versailles, France. Li, P., P.S. Rudland, D.G. Fernig, L.M.B. Finch, and C.J. Wilde. 1999. Modulation of mammary development and programmed cell death by the frequency of milk removal in lactating goats. J. Physiol. (Lond.). 519:885-900. Marnet, P.G., and B.C. McKusick. 2001. Regulation of milk ejection and milkability in small ruminants. Livest. Prod. Sci. 70:125-133. McKusick, B.C., Y.M. Berger, P.G. Marnet, and D.L. Thomas. 2001. Effect of two weaning systems on milk composition, storage, and ejection in dairy ewes. J. Dairy Sci. 79(Suppl. 1):234 (abstract). Morag, M. 1968. The effect of varying the daily milking frequency on the milk yield of the ewe and evidence on the nature of the inhibition of milk ejection by half-udder milking. Ann. Zootech. 17:351-369. Peaker, M. 1980. The effect of raised intramammary pressure on mammary function in the oat in relation to the cessation of lactation. J. Physiol. (Lond.). 301:415-428. Rémond, B., J.B. Coulon, M. Nicloux, and D. Levieux. 1999. Effect of temporary once-daily milking in early lactation on milk production and nutritional status of dairy cows. Ann. Zootech. 48:341-352. SAS User’s Guide: Statistics, Version 8 Edition. 1999. SAS Inst., Inc., Cary, NC. Thomas, D.L., Y. M. Berger, and B.C. McKusick. 2000. East Friesian germplasm: effects on milk production, lamb growth, and lamb survival. Proc. Am. Soc. Anim. Sci., 1999. Online. Available: http://www.asas.org/jas/symposia/proceedings/0908.pdf. Walsh, J.P. 1976. Bovine milk secretion following the omission of milkings immediately post partum and during mid-lactation. Irish J. Agric. Res. 15:91-106. Wilde, C.J., and C.H. Knight. 1990. Milk yield and mammary function in goats during and after once-daily milking. J. Dairy Res. 57 :441-447. Wilde, C.J., C.V.P. Addey, L.M. Boddy, and M. Peaker. 1995. Autocrine regulation of milk secretion by a protein in milk. Biochem. J. 305:51-
Table 1. Least squares means ± SEM for milk production and composition traits of an individual ewe in the two treatment groups during the experiment (d 90 to the end of lactation). Treatment 1 Trait 12H 16H Total number of milkings 180 135 Lactation length, d 179.3 ± 1.2 177.5 ± 1.1 Morning milk production, kg 0.65 ± 0.03 b 0.83 ± 0.03 a Parlor time 2 , min 12.7 ± 0.4 12.4 ± 0.4 Adj. 24-h milk production, kg 1.34 ± 0.06 1.35 ± 0.06 Total milk production, kg 119.1 ± 5.3 118.0 ± 5.2 Avg. milk fat, % 5.48 ± 0.16 5.51 ± 0.15 Total milk fat yield, kg 6.3 ± 0.3 6.2 ± 0.3 Avg. milk protein, % 4.74 ± 0.08 4.82 ± 0.08 Total milk protein yield, kg 5.5 ± 0.2 5.5 ± 0.2 Somatic cell count, log units 4.69 ± 0.04 4.64 ± 0.04 a,b Means within a row with different subscripts differ (P < 0.05). 1 During the experiment, 12H ewes (n = 24) were milked twice daily (0600 and 1800) and 16H ewes (n = 24) were milked every 16 h (0600, 2200, and 1400). 2 Time for parlor entry, machine milking, and parlor exit for a treatment group of 24 ewes during a morning milking.
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dimanche soir sur les brebis de race Préalpes du Sud. Ann. Zootech. 23:435-444.<br />
Labussière, J. 1988. Review <strong>of</strong> <strong>the</strong> physiological and anatomical factors influencing <strong>the</strong> milking<br />
ability <strong>of</strong> ewes and <strong>the</strong> organization <strong>of</strong> milking. Livest. Prod. Sci. 18:253-274.<br />
Labussière, J. 1993. Physiologie de l’éjection du lait: conséquences sur la traite. Pages 259-294<br />
in Biologie de la Lactation. INRA, Service de Publications, Versailles, France.<br />
Li, P., P.S. Rudland, D.G. Fernig, L.M.B. Finch, and C.J. Wilde. 1999. Modulation <strong>of</strong> mammary<br />
development and programmed cell death by <strong>the</strong> frequency <strong>of</strong> milk removal in lactating goats. J.<br />
Physiol. (Lond.). 519:885-900.<br />
Marnet, P.G., and B.C. McKusick. 2001. Regulation <strong>of</strong> milk ejection and milkability in small<br />
ruminants. Livest. Prod. Sci. 70:125-133.<br />
McKusick, B.C., Y.M. Berger, P.G. Marnet, and D.L. Thomas. 2001. Effect <strong>of</strong> two weaning<br />
systems on milk composition, storage, and ejection in dairy ewes. J. <strong>Dairy</strong> Sci. 79(Suppl.<br />
1):234 (abstract).<br />
Morag, M. 1968. The effect <strong>of</strong> varying <strong>the</strong> daily milking frequency on <strong>the</strong> milk yield <strong>of</strong> <strong>the</strong> ewe<br />
and evidence on <strong>the</strong> nature <strong>of</strong> <strong>the</strong> inhibition <strong>of</strong> milk ejection by half-udder milking. Ann.<br />
Zootech. 17:351-369.<br />
Peaker, M. 1980. The effect <strong>of</strong> raised intramammary pressure on mammary function in <strong>the</strong> oat in<br />
relation to <strong>the</strong> cessation <strong>of</strong> lactation. J. Physiol. (Lond.). 301:415-428.<br />
Rémond, B., J.B. Coulon, M. Nicloux, and D. Levieux. 1999. Effect <strong>of</strong> temporary once-daily<br />
milking in early lactation on milk production and nutritional status <strong>of</strong> dairy cows. Ann.<br />
Zootech. 48:341-352.<br />
SAS User’s Guide: Statistics, Version 8 Edition. 1999. SAS Inst., Inc., Cary, NC.<br />
Thomas, D.L., Y. M. Berger, and B.C. McKusick. 2000. East Friesian germplasm: effects on milk<br />
production, lamb growth, and lamb survival. Proc. Am. Soc. Anim. Sci., 1999. Online. Available:<br />
http://www.asas.org/jas/symposia/proceedings/0908.pdf.<br />
Walsh, J.P. 1976. Bovine milk secretion following <strong>the</strong> omission <strong>of</strong> milkings immediately post<br />
partum and during mid-lactation. Irish J. Agric. Res. 15:91-106.<br />
Wilde, C.J., and C.H. Knight. 1990. Milk yield and mammary function in goats during and after<br />
once-daily milking. J. <strong>Dairy</strong> Res. 57 :441-447.<br />
Wilde, C.J., C.V.P. Addey, L.M. Boddy, and M. Peaker. 1995. Autocrine regulation <strong>of</strong> milk<br />
secretion by a protein in milk. Biochem. J. 305:51-
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