Results 21 to 30 of about 31,212 (238)

Effects of Age at First Joining and Ewe Genotype on the Performance of Two-Tooth Ewes and That of Their Progeny to Slaughter

Animals, 2022
The effects of first-joining age (7 or 19 months) and genotype on ewe performance when joined to lamb at 2 years, and the performance of their progeny, were evaluated using 424 ewes, representing 3 genotypes: Belclare (Bel), Suffolk × Belclare (Suf × Bel)
Timothy W. J. Keady, James P. Hanrahan
doaj   +1 more source

A Survey of Farm Management Practices Relating to the Risk Factors, Prevalence, and Causes of Lamb Mortality in Ireland

Animals, 2021
Lamb mortality is a key factor influencing ewe productivity and profitability. The current study investigated risk factors associated with and management practices implemented on sheep farms to reduce lamb mortality.
Dwayne Shiels, Jason Loughrey, Cathy M. Dwyer, Kevin Hanrahan, John F. Mee, Timothy W. J. Keady   +5 more
doaj   +1 more source

Pasture Feeding in Late Pregnancy Does Not Improve the Performance of Twin-bearing Ewes and Their Lambs [PDF]

Asian-Australasian Journal of Animal Sciences, 2015
The present study evaluated the effect of controlled ryegrass-white clover herbage availability from day 128 until day 142 of pregnancy in comparison to unrestricted availability, on the performance of twin-bearing ewes of varying body condition score ...
R. A. Corner-Thomas, P. J. Back, P. R. Kenyon, R. E. Hickson, A. L. Ridler, K. J. Stafford, S. T. Morris   +6 more
doaj   +1 more source

A NOTE ON MORTALITY OF SOCORRO ISLAND MERINO LAMBS

Tropical and Subtropical Agroecosystems, 2022
Background. The Socorro Island Merino sheep constitutes a unique population in the world whose number is reduced to less than a hundred individuals, thus facing an imminent risk of extinction. Objective.
Rafael Julio Macedo Barragán, Galilea Elizabeth Regla Maldonado, Victalina Arredondo Ruiz, Paola Estefanía Castillo Zamora, Luis Jorge García Márquez   +4 more
doaj   +1 more source

Effects of breed and age on the performance of crossbred hill ewes sourced from Scottish Blackface dams

Animal, 2011
The aim of this study was to evaluate the effects of age and breed on the reproductive performance and lamb output of crossbred hill ewes relative to purebred Scottish Blackface (BF).
R.W. Annett, A.F. Carson, L.E.R. Dawson, D. Irwin, D.J. Kilpatrick   +4 more
doaj   +1 more source

Ewe-lamb bonding behaviours at birth are affected by maternal undernutrition in pregnancy [PDF]

, 2003
Maternal undernutrition in pregnancy results in low birth-weights and impaired postnatal survival in sheep. Largely anecdotal evidence suggests that the expression of appropriate maternal and neonate behaviours may also be disrupted by undernutrition. In
Alistair B. Lawrence, Cathy M. Dwyer, Cloete, Mellor, Mitch Lewis, Moore, O'Connor, Putu, Reynolds, Robinson, Shillito, Stephen C. Bishop, Waterhouse   +12 more
core   +2 more sources

Effects of sire breed on ewe dystocia, lamb survival and weaned lamb output in hill sheep systems

Animal, 2010
A study was carried out on six hill farms, located in the main hill regions of Northern Ireland, over three breeding seasons to investigate the effect of sire breed on ewe dystocia, lamb survival and weaned lamb output.
M.H.M. Speijers, A.F. Carson, L.E.R. Dawson, D. Irwin, A.W. Gordon   +4 more
doaj   +1 more source

A within farm clinical trial to compare two treatments (parenteral antibacterials and hoof trimming) for sheep lame with footrot [PDF]

, 2010
From observational studies, farmers who use parenteral antibacterials to promptly treat all sheep with footrot (FR) or interdigital dermatitis (ID) have a prevalence of lameness of
Abecia, Binns, Christley, Depiazzi, E.M. King, Egerton, Everett-Hincks, Fitzpatrick, Forcada, G.J. Wassink, Goddard, Goldstein, Green, Green, Grogono-Thomas, J.C. Brown, Kaler, Kaler, Kaler, Kaler, L.E. Green, L.J. Moore, Marshall, Mellor, MLC, Moore, Nieuwhof, Nieuwhof, O’Doherty, R. Grogono-Thomas, Rasbash, Rhind, Schwartzkoff, Sterk, Stewart, Wassink, Wassink, Williams, Winter   +38 more
core   +2 more sources

Effects of melatonin implants in ewe lambs [PDF]

Reproduction, 1984
Sixteen pinealectomized and 19 unoperated ewes were exposed to constant light for about 4 weeks before and 4 weeks after lambing. Five ewe lambs born to pinealectomized ewes were implanted s.c. with melatonin sachets and 6 ewe lambs implanted with empty sachets. The 6 ewe lambs born to unoperated dams received empty implants.
D J, Kennaway, T A, Gilmore
openaire   +2 more sources

The effect of late pregnancy supplementation of ewes with vitamin E on lamb vigour

Animal, 2009
The experiment measured lamb responses to supplementation of the pregnant ewe diet with vitamin E above requirement. Crossbred ewes were mated with either Suffolk or Texel rams. Twin-bearing ewes were randomly allocated (approximately 21 months of age at
J.A. Rooke, S. Matheson, S. Ison, M. Jack, C.J. Ashworth, C.M. Dwyer   +5 more
doaj   +1 more source