Results 31 to 40 of about 796 (161)

Identification of homozygous haplotypes carrying putative recessive lethal mutations that compromise fertility traits in French Lacaune dairy sheep

open access: yesGenetics Selection Evolution, 2021
Background Homozygous recessive deleterious mutations can cause embryo/fetal or neonatal lethality, or genetic defects that affect female fertility and animal welfare.
Maxime Ben Braiek   +4 more
doaj   +1 more source

Racial susceptibility of sheep to gastrointestinal helminths
Suscetibilidade racial de ovinos a helmintos gastrintestinais

open access: yesSemina: Ciências Agrárias, 2011
The objective was to compare the susceptibility of sheep breeds Lacaune, Bergamacia, Santa Ines and animals without defined breed (AWDB) kept confined to gastrointestinal helminths. The design used was a randomized block design being considered treatment
Adivaldo Henrique da Fonseca   +1 more
doaj   +1 more source

Opportunities and limits of commercial farm data to study the genetic determinism of feed efficiency throughout lactation in dairy sheep

open access: yesAnimal, 2023
The collective economic and environmental interest of the whole dairy sheep sector is to reduce feed costs and the negative impact of milk production on the environment.
C. Machefert   +8 more
doaj   +1 more source

Evaluating Selection Strategies Based on Inbreeding Load via Simulation

open access: yesJournal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Inbreeding load is the fraction of the mutation load that is due to recessive action of mutations. This load is only expressed in individual's inbred offspring. As such, inbreeding load contributes to genetic heterogeneity among individuals and can thus be used as a criterion of selection.
Simona Antonios   +5 more
wiley   +1 more source

Effects of Nano Zinc Oxide Supplementation on Oxidative Stress and Selected Metabolic Parameters During the Transition Period in Lacaune Ewes

open access: yesVeterinary Medicine and Science, Volume 12, Issue 5, September 2026.
Nano zinc oxide supplementation did not significantly affect TOS, TAS or OSI in transition period Lacaune ewes. However, treatment related responses were observed for BHBA, phosphorus and total cholesterol, suggesting limited metabolic effects that require cautious interpretation.
Gaye Bulut   +2 more
wiley   +1 more source

Melatonin and Lactation in Ruminants Dairy Animals: A Systematic Review and Meta‐Analysis of Preclinical Studies

open access: yesHealth Science Reports, Volume 9, Issue 8, August 2026.
ABSTRACT Background and Aims Melatonin is present in breast milk with a diurnal pattern, potentially supporting early circadian rhythm development. This systematic review and meta‐analysis aimed to evaluate the effects of exogenous melatonin supplementation, compared with no treatment or placebo, on milk yield, milk composition, somatic cell count ...
Reza Sattarpour   +4 more
wiley   +1 more source

A validation study of loci associated with mastitis resistance in two French dairy sheep breeds

open access: yesGenetics Selection Evolution, 2019
Background The identification of loci associated with resistance to mastitis or of the causative mutations may be helpful in breeding programs for dairy sheep as it is for cattle worldwide.
Claire Oget   +8 more
doaj   +1 more source

Causes of Lamb Mortality in the Lacaune Sheep Breed in Iran

open access: yesJournal of Medical Bacteriology, 2023
Background: Neonatal mortality is a significant multifactorial problem that affects flock productivity. Different infectious and non-infectious factors have been attributed to lamb losses. The objective of the present study was to identify the major causes of neonatal mortality.
Hossein Esmaeili   +2 more
openaire   +1 more source

Reference Intervals for Schirmer Tear Test and Intraocular Pressure in Healthy Hamdani Crossbred Sheep

open access: yesVeterinary Medicine and Science, Volume 12, Issue 4, July 2026.
This study establishes reference intervals for Schirmer tear test (STT) and intraocular pressure (IOP) in healthy Hamdani crossbred sheep. STT values were lower and IOP values higher than previously reported, highlighting the importance of breed‐specific reference ranges in clinical ophthalmic evaluation.
Kadir Sulu   +5 more
wiley   +1 more source

Reference values for serum amyloid A, haptoglobin, lysozyme, zinc and iron in healthy lactating Lacaune sheep

open access: yesActa Veterinaria Scandinavica, 2018
Acute-phase proteins and trace elements are considered biomarkers of the immune response to infection, inflammation, trauma and other pathological conditions, as well as indicators of the health status and productivity of farm animals. Given the scarcity
Arianna Miglio   +5 more
doaj   +1 more source

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