Results 1 to 10 of about 3,714 (196)

Breeding Ewe Lambs: An Australasian Perspective

open access: yesAnimals, 2022
A number of potential advantages have been identified for breeding ewe lambs at 7 to 9 months of age, including increased lifetime productivity and profitability.
René Corner-Thomas   +2 more
exaly   +5 more sources

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

open access: yesAnimal, 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.
L E R Dawson, L E R Dawson, A F Carson
exaly   +3 more sources

Udder skin temperature is related to the ewes’ and lambs’ behaviors at birth in autumn lambing ewes

open access: yesFrontiers in Ethology
The survival of lambs depends on various factors, including the behavioral traits of both mother and newborn lambs at birth, as well as the ewe’s colostrum production and quality.
Rodolfo Ungerfeld   +3 more
doaj   +2 more sources

Abortion and Lamb Mortality between Pregnancy Scanning and Lamb Marking for Maiden Ewes in Southern Australia

open access: yesAnimals, 2021
The contribution of abortions to the overall mortality of lambs born to maiden (primiparous) ewes in Australia remains unclear. This cohort study aimed to quantify abortion and lamb mortality for ewe lambs and maiden Merino two-tooth ewes. Lamb mortality
Thomas Clune   +11 more
doaj   +1 more source

Factors Associated with Mortality of Lambs Born to Ewe Hoggets

open access: yesAnimals, 2022
The reproductive performance of ewe hoggets is poorer than that of mature-age ewes due to production of fewer lambs with poorer survival. Scant data are available on the risk factors for, and causes of, the mortality for lambs born to ewe hoggets, the ...
Anne L. Ridler   +5 more
doaj   +1 more source

Effect of Breeding Heavier Romney Ewe Lambs at Seven Months of Age on Lamb Production and Efficiency over Their First Three Breeding Seasons

open access: yesAnimals, 2021
This experiment examined the effect of breeding heavier ewe lambs on lamb production and their efficiency over their first three breeding seasons. Two groups of ewe lambs were bred at seven months of age at an average pre-breeding live weight of either ...
Emmanuelle Haslin   +6 more
doaj   +1 more source

Effects of joining at 7 months, and ewe genotype, on the performance of ewes to 19 months of age and that of their progeny to slaughter

open access: yesAnimal, 2021
Two ways of reducing the cost of replacements are increasing litter size and number of litters produced; thus, the total weight of lamb carcass output per ewe lifetime. The effects of ewe genotype on the performance of ewes lambing at 1 year and of their
T.W.J. Keady, J.P. Hanrahan
doaj   +1 more source

Dosing ewes at lambing time [PDF]

open access: yesVeterinary Record, 2016
WITH lambing now under way in many regions of the UK, farmers' minds should already be focusing on worm control in both their ewes and lambs for the forthcoming grazing season. This letter serves as a reminder to vets and advisers who should already have established farm health plans for the coming year and have discussed a worm control plan with their
Taylor, Mike   +3 more
openaire   +3 more sources

The Effect of Age of Dam and Birth Rank on the Reproductive Performance of Ewes as One- and Two-Year-Olds

open access: yesAnimals, 2021
Currently, 30–43% of New Zealand sheep farmers breed their ewe lambs, but few retain the offspring as replacements for their flock. No difference in lamb production as a yearling among singletons and twins born to ewe lambs and twins born to mature ewes ...
Emma Pettigrew   +6 more
doaj   +1 more source

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