Vaginoscopy allows for diagnostic evaluation and treatment of the vaginal vault. A laparoscopic surgical port device and rigid telescope were utilized for serial vaginoscopy in 8 healthy anesthetized ewes. Vaginoscopy examinations were performed in each ewe at days 1, 14, and 28. This technique was well-tolerated and facilitated carbon dioxide vaginal inflation, complete vaginal examination, id...

the aim of this survey was to evaluate the frequency of pregnant ewes slaughtered in khorram abadabattoir and estimation of their gestational age. over a period of five months in fall and winter, a totalnumber of 3046 uterine tracts were collected. pregnancy was detected in 56.50% of ewes, 52.36% and 4.13% of which carried singleton and twins, respectively. the highest frequency of pregnancy wa...

the aim of this study was identification of important factors and their effects on mortality of lori-bakhtiari lambs from birth to weaning. the data set used for statistical analysis were collected from 4991 lambs born between 1370 and 1384 in flock at lori-bakhtiari sheep breeding station. data was modeled using logistic regression. mortality variable as dependent and ewe weight at mating, ewe...

Large offspring syndrome (LOS) may be initiated in ovine embryos after exposure to in vitro conditions. The objective of this study was to compare various parameters of the gravid uterus on day 140 after fertilization: (i) in ewes (n=4) bred naturally, and in ewes (n=18) after transfer of embryos produced in vitro, and (ii) in single, twin and triplet pregnancies after transfer of in vitro prod...

this experiment was carried out to compare the effects of treated and untreated wheat straw with pleurotus florida on ewe feed intake, nutrient digestibility, and ewe body condition score (bcs) after parturition. thirty kermani ewes with an average weight of 48 ± 3.05 kg and about four years old were used in this experiment. synchronization of estrus in sheep has been achieved with the use of i...

Effects of breed and sward surface height on ewe liveweight and body condition changes and on lamb liveweight gains during grazing in the spring and autumn were studied. The output per hectare in each season was also calculated. A total of 112 Gallega ewes (35Æ6 kg live weight) and 204 Latxa ewes (47Æ5 kg live weight) with their lambs were used during the spring (March–June) to study the effect...

Reproductive performance and body weights of four and five-year old crossbred ewes representing five combinations of Finnsheep (F), Dorset (D) and Rambouillet (R) breeding were evaluated when lambing in the summer Oune-July, 1976). The five breed combinations represented were 1f2D, 1f2R; %D, %R; %F, 1f2D, %R; %F, %D, 1f2Rand %F, 3f4R. Breeding effectiveness of purebred and crossbred rams of Ham...

Sheep production industries face the challenge of increasing farm and profit while reducing environmental impacts. Genetic selection using multi-trait breeding indices can be used to improve flock productivity, profitability, greenhouse gas (GHG) emissions intensities (kg CO2-eq /kg product), however validation improved performance animals ranked higher on at a level is required. Phenotypic dat...

In practical production, almost all rams and about 50% of ewes are used to fatten. Researchers have proved that ewe ovariectomy could improve the productivity significantly, but the specific molecular mechanism is still unknown. In this study, five independent cDNA libraries (three and two from ovariectomized and normal ewe longissimus dorsi samples, respectively) were constructed to thoroughly...