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Showing 1 to 20 of 46 for “"boars"”.
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Arachidonate 15-lipoxygenase and ubiquitin as potential fertility markers in boars
… (n=116) were collected from 18 Large White boars for eight months (April, August-February). Ejaculates were analyzed and the percentage of proximal CDs (PCD), distal CDs (DCD), distal midpiece reflex CDs (DMR) and other spermatozoa abnormalities (ABN). Further ejaculate analysis was …
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Growth Performance, Carcass Traits, and Reproductive Characteristics in Boars Fed Diets Supplemented With an Organic Source of Selenium
… to assess growth and reproductive performance of boars fed a diet supplemented with organic selenium (Se). Crossbred boars received one of three treatments: I. basal diet with no supplemental Se, II. basal diet supplemented with 0.3 ppm organic Se (Sel-Plex), and, III. basal diet supplemented with …
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Immunological castration of boars temporarily reduces testosterone concentration, testis size and function, without long term effects on libido and sperm quality
… (Improvest) on reproductive characteristics in boars. Seventy-two boars were used in a randomized design with three treatments: single injection (SI) or double injection (DI) of Improvest, and intact controls (no Improvest; CNT) (n = 24/group). At wk 10, 15, 20, 25, and 40, blood was collected …
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Enhancing Boar Reproductive Performance for Purposes of Artificial Insemination
… expedited the training of sexually inexperienced boars for semen collection and increased spermatozoal output, and 2) determine the effects of dietary L-carnitine supplementation on boar libido, semen quality, sperm production, and maintenance of sperm motility during liquid storage. Experiment 1 …
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Effect of restricted growth rate and elevated levels of minerals and vitamins on feet and leg characteristics, soundness scores and metacarpal and metatarsal characteristics of growing boars
… and metatarsal characteristics of growing boars was studied. Boars assigned to the dietary treatments at 5 wk of age were serially necropsied beginning at 120 d of age. Foot and leg characterization was carried out at four periods (35, 122, 209 and 290 d of age) and at necropsy. Bone …
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Effects of restricted growth rate, elevated vitamin and mineral levels and aging on bone growth, histological integrity and biochemical composition of articular cartilage in boars
… composition of articular cartilage from growing boars was examined. Growth of the radius and tibia was characterized by radiography at eight equal time points from 110 to 330 d of age. Although ad libitum-fed boars had larger bones in most cases, calculation of weight corrected differences …
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ΣΥΜΒΟΛΗ ΣΤΗΝ ΚΑΤΑΡΤΙΣΗ ΤΟΥ ΒΕΛΤΙΣΤΟΥ ΣΧΕΔΙΟΥ ΕΠΙΛΟΓΗΣ ΤΩΝ ΧΟΙΡΩΝ ΣΤΗΝ ΕΛΛΑΔΑ
… IN STATION FOR THE SELECTION OF NUCLEUS BOARS AND SOWS, - CULLING OF BOARS AND SOWS AFTER SIX MONTHS AND 1-2 LITTERS REPRODUCTIVE LIFE, RESPECTIVELY.RATIO OF BOARS TO SOWS 1:250 OR 1:30 WITH OR WITHOUT ARTIFICIAL INSEMINATION. INSEMINATION.
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Correlative Analysis of Sperm Morphology, Seminiferous Epithelial Area and Testis Weight in the Boar
… month intervals, testes and epididymides of 300 boars were collected at an abattoir. Sperm samples from both right and left cauda epididymis of each boar were collected from which two groups were identified using the criterion in the frequency of sperm abnormalities. Group A (Normal) had a …
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Method development and proteomic profiling of boar seminal plasma using mass spectrometry-based workflows
… semen lack precision, and the use of low fertile boars in breeding systems is prominent. Using mass spectrometry in fertility studies has gained momentum in the race for new markers of fertility and semen cryopreservation. Therefore, the aim of this study was to develop and optimise a mass …
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A chromosomal analysis of 25-day pig embryos
… Yorkshire gilts were mated to purebred Hampshire boars to produce 25-day embryos for chromosomal analysis. Blood samples were drawn from five of these gilts and one of the boars for leucocyte cultures and a comparison was made between karyotypes prepared from the dam with those prepared from her …
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Effect of Feed Additives and Toxic Elements on Swine Growth Performance, Nutrient Digestibility, Immune Function and Reproductive Performance
… pigs (Exp 1), growing gilts (Exp 2) and growing boars (Exp 3) were randomly allotted to dietary treatments. Treatments for Exp 1 during phase 1&2 were: (1) Positive Control (PC), formulated to meet NRC (2012) nutrient requirements; (2) Negative control (NC), fish meal was reduced to achieve …
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Effect of vaccination against porcine circovirus type 2 (PCV2) on ejaculate characteristics and the shedding of virus in boar semen
… antibody titers in serum of PCV2-positive boars viremia and viral shedding in semen. Semen and blood samples were collected weekly from week 0 to week 8. After collections at week 0, boars were vaccinated with a commercial vaccine against PCV2 (n = 5) (Suvaxyn PCV2 One dose; Fort Dodge …
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A Study of Effects of Blood Types, Sires, Litter Size and Other Factors on Sex Ratios in Pigs
… for high whole-body potassium per unit weight of boars on sex ratios were all considered. A total of 1,328 litters of pigs over seven generations in five breed classes (Duroc, Duroc selected, Yorkshire, Yorkshire selected and Duroc x Yorkshire crossbred selected classes) were studied.
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Genetic parameters and genomic analysis of semen quality and fertility traits in pigs
… the genetic progress. Currently, young boars are selected for AI based on their breeding values for production traits and selecting boars for semen traits, such as volume, concentration, motility and morphology, and for low variation in semen quality and production is still not a common …
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Evolutionary analysis of Suidae TLR signaling pathway
… level. The European Sus scrofa (wild boars and domestic pigs) diverged from their Asian counterparts over 1million years ago. Distinct pathogen mediated selective pressures might have acted on these geographically separated groups leading to signatures of adaptation in host genes. To …
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Surveillance in contemporary swine herds - the case of porcine reproductive and respiratory syndrome virus (PRRSV)
… The study was done in three trials with 24 boars used in each trial. Boars were intramuscularly (IM) inoculated with a commercial modified live virus (MLV) vaccine (Trial 1), a Type 1 PRRSV field isolate (Trial 2), or a PRRSV Type 2 field isolate (Trial 3). Oral fluid samples were collected …
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In vitro maturation and fertilization of porcine oocytes and evaluation of male fertility
… the difference of sperm fertility from different boars. In the study of in vitro oocyte maturation, the oocyte maturation process was divided into the stages of germinal vesicle (GV I, GV II, GV III, and GV IV), metaphase I (EPromet I, LPromet I, and Met I), anaphase I (EAna I, MAna I, and LAna …
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EPIDEMIOLOGY AND DISTRIBUTION OF PARASITES OF ANIMAL - SPECIFIC AND ZOONOTIC IMPORTANCE IN PIG FARMS IN NORTHERN ITALY.
… matrices. 3. To investigate the role of wild boars as reservoirs of parasites for domestic pigs In collaboration with the Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna, Cremona section, fecal samples from 191 wild boars hunted in northern Italy were collected and …
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Factors affecting post-thaw quality of cryopreserved boar sperm and its effect on gilt fertility
… Ejaculates (n = 15) used were obtained from 13 boars and frozen from March 2010 to March 2011. Samples were frozen in 0.5 mL straws at a concentration of 1.4 x 109 sperm/mL. To test for the effects of thawing temperature and duration of thawing, sub-samples from individual straws from each …
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Effects of feeding ractopamine (Paylean®) to immunologically castrated (Improvest®) pigs on growth performance, carcass yields, and further processing characteristics
… delaying castration until later in production. Boars are the most efficient of all sexes of swine mainly due to increased testosterone levels and the effects they have on appetite and lean accretion. However, as boars age and reach market weights, the meat from these pigs often has an unpleasant …
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