Results 151 to 160 of about 3,714 (196)

Survival of lambs from maiden ewes may not be improved by pre-lambing exposure to mature lambing ewes

Animal Production Science, 2016
The survival of lambs born to ewes at their first (maiden) lambing is generally lower than for those born to ewes which have previously lambed, and poor maternal behaviour is a contributing factor. This study examined whether pre-lambing exposure of maiden ewes to multiparous lambing ewes would improve the survival of lambs born to maiden ewes ...
S. M. Robertson, M. B. Allworth, M. A. Friend   +2 more
openaire   +1 more source

Effects of rearing triplet lambs on ewe productivity, lamb survival and performance, and future ewe performance.

Journal of animal science, 2019
Public domain – authored by a U.S.
Notter, David R., Mousel, Michelle R., Leeds, Timothy D., Lewis, Gregory S., Taylor, J. Bret   +4 more
openaire   +3 more sources

The Transfer of Antibodies from Ewes to Their Lambs

The Journal of Immunology, 1965
Summary Newborn lambs, unlike rats and mice, absorbed homologous agglutinins to Salmonella pullorum or Brucella abortus equally readily from colostrum. Agglutinins produced shortly after a first injection of B. abortus vaccine into ewes passed in relatively greater quantities into the colostrum than agglutinins of later immunization but ...
openaire   +2 more sources

Effect of ewe ovine lentivirus infection on ewe and lamb productivity

Preventive Veterinary Medicine, 1997
We used a previously described sensitive and specific ovine lentivirus (OLV) recombinant transmembrane (rTM) protein enzyme-linked immunosorbent assay (ELISA) to detect anti-OLV antibodies and define OLV infection in breeding ewes from nine US Meat Animal Research Center (MARC) flocks. We estimated the production impacts of dam rTM ELISA seropositivity
J E, Keen, L L, Hungerford, E T, Littledike, T E, Wittum, J, Kwang   +4 more
openaire   +2 more sources

GRAZING SYSTEMS FOR EWES AND LAMBS

Canadian Journal of Animal Science, 1962
Two experiments were conducted to compare forward creep grazing of lambs with other grazing management systems for ewes and lambs. In the first experiment, forward creep grazing with and without creep feeding of concentrates was compared with rotational grazing, using 7 ewes with single lambs per plot of [Formula: see text] acres.
F. W. Calder, J. W. G. Nicholson, H. M. Cunningham   +2 more
openaire   +1 more source

Reduced survival of lambs from maiden ewes exposed to mature ewes pre-lambing

Small Ruminant Research, 2017
Abstract The suboptimal survival of new-born lambs is a major source of reproductive inefficiency, is often lower in maiden (first-lambing) compared with multiparous ewes, and this may be associated with poor maternal behaviour due to inexperience.
S.M. Robertson, M.B. Allworth, M.A. Friend   +2 more
openaire   +1 more source

Medicating feeds for early lambing ewes

Veterinary Record, 2012
THE antiprotozoal agent decoquinate is added under prescription to feeds for in-lamb ewes for two purposes: in early pregnancy to prevent toxoplasmosis, and in the weeks before and after lambing to prevent coccidiosis in the …
openaire   +2 more sources

Winter feeding of the in-lamb ewe

The Journal of Agricultural Science, 1959
1. Three winter feeding experiments (1954–57) were carried out using small flocks of Border Leicester x Cheviot ewes tupped by a Suffolk ram.2. The feeds used were various combinations of (a) silage, (b) hay, (c) ‘winter grass’, and (d)concentrates. Their value in late pregnancy was compared in terms of performance of the ewe and the birth weight of ...
R. V. Large, F. E. Alder, C. R. W. Spedding   +2 more
openaire   +1 more source

Odour, and the recognition of lambs by Merino ewes

Applied Animal Ethology, 1978
Alexander, G., 1978. Odour, and the recognition of lambs by Merino ewes. Appl. Anim. Ethol., 4: 153–158. Ewes that had been separated from their lambs for several hours were each presented with a choice between three anaesthetized lambs, one of which was the ewe's own.
openaire   +1 more source

PARASITISM IN EWES AND LAMBS IN RELATION TO SEASON OF LAMBING

Australian Veterinary Journal, 1972
W H, Southcott, J M, George, R J, Lewis
openaire   +2 more sources