Semen quality of Merino rams. 1. The effects of fleece length and season on semen quality

1965 ◽  
Vol 5 (18) ◽  
pp. 243
Author(s):  
DG Fowler
Keyword(s):  
Semen Quality ◽  
Control Group ◽  
Monthly Variation ◽  
Summer Period ◽  
High Quality ◽  
Semen Characteristics

One group of 11 medium wool Peppin Merino rams was kept in short wool during summer 1960-61 (treatment). A second group remained unshorn during this period (control). Semen was collected from all rams at 14-day intervals during the summer period, October 1960 until March 1961, and from control rams until 243 March 1962. Both groups of rams had semen of similar and high quality during summer 1960-61. In the control group there was significant monthly variation for all semen characteristics studied but semen quality remained generally high. Significant differences were found between individual rams for all semen characteristics studied, some rams having markedly degenerate semen during the summer periods.

The influence of injectable sodium selenite on semen characteristics and testosterone concentration in Aardi goats

2015 ◽  
Vol 49 (6) ◽  
Author(s):  
A. Hajalshaikh ◽  
M. J. Al-Hassan ◽  
H. E. Mohamed
Keyword(s):  
Body Weight ◽  
Sodium Selenite ◽  
Semen Quality ◽  
Sperm Count ◽  
Plasma Concentrations ◽  
Control Group ◽  
Progressive Motility ◽  
Group I ◽  
Semen Characteristics ◽  
And Control

The objective of this study was to test the effects of sodium selenite (SS) injection on semen characteristics and testosterone plasma concentrations in male Aardi goats. Fifteen animals were assigned into three groups; control (group I, with no supplemental SS); group II; injected intramuscular with 0.1 mg/kg SS body weight; group III injected 0.05 mg/kg SS body weight. Blood samples were collected once weekly (week 0 and four weeks after treatment) in the morning (at 8 am). Semen was collected by electro-ejaculator on a weekly basis post SS supplementation. Sperm count, motility %, progressive motility characteristic; average path velocity (VAP), straight line velocity (VSL), curvilinear velocity (VCL), straightness (STR) and linearity (LIN) were analyzed. Significant differences were found between the two treated-groups and control after week four for motility and progressive motility. After five weeks, significant differences were found between groups, for motility and progressive motility. The live % showed significant differences after five weeks between treated and control groups. After five weeks, significant differences were found between the three groups, for motility and progressive motility. The live % showed significant differences after 5 weeks between different treatments. However, VAP, VSL, VCL, STR, and LIN showed non-significant differences, suggesting that bucks might already have a good motility characteristic. No significant effects of SS supplementation on testosterone plasma levels, and the reported values were 1.28; 1.35, and 1.36 ng/ml for control; group 1, and group 2; respectively. In conclusion, SS improved reproduction in goats <italic>via</italic> the enhancement of semen quality in Aardi goats.

scholarly journals Effect of Selenium and Vitamin E Supplementation on Semen Quality in Dogs with Lowered Fertility

2015 ◽  
Vol 59 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Anna Domosławska ◽  
Sławomir Zduńczyk ◽  
Wojciech Niżański ◽  
Andrzej Jurczak ◽  
Tomasz Janowski
Keyword(s):  
Vitamin E ◽  
Semen Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Control Group ◽  
Organic Selenium ◽  
Healthy Dogs ◽  
Manual Manipulation ◽  
Motility Parameters

Abstract Thirty clinically healthy dogs with poor semen quality were used in the study. Fifteen dogs were supplemented daily with selenium (0.6 mg/kg organic selenium from yeast) and vitamin E (5 mg/kg) per os for 60 d. The control group (15 dogs) was not supplemented. Semen was collected from all dogs by manual manipulation on days 0, 30, 60, and 90. The sperm concentration and motility parameters were evaluated with a Hamilton Thorne sperm analyser, version IVOS 12.3. For the assessment of sperm morphology, Diff-Quik stain was used. The percentage of live and dead spermatozoa was estimated on dried smears stained with eosin-nigrosin. The concentration of spermatozoa, most motility parameters determined (PMOT, VSL, VCL, ALH, BCF, RAPID, MEDIUM, SLOW, and STATIC), and the percentage of spermatozoa morphologically normal and live increased significantly (P < 0.05) after 60 d of supplementation. In the control group, there were no changes in motility parameters while the concentration and total sperm count decreased over the duration of the study. In conclusion, supplementation with selenium and vitamin E for 60 d can improve the quality of semen in dogs with lowered fertility.

scholarly journals Effect of Heat Stress on Buck’s Adaptability and Semen Characteristics

2016 ◽  
Vol 9 (1) ◽  
pp. 151-156 ◽  
Author(s):  
A Rahman ◽  
MM Hossain ◽  
M Khan ◽  
MT Kamal ◽  
MA Hashem
Keyword(s):  
Heat Stress ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Sun Exposure ◽  
Biological Data ◽  
Measured Temperature ◽  
Semen Characteristics ◽  
Humidity Index ◽  
Severe Heat Stress

The experiment was conducted to investigate the effect of heat stress on adaptability and semen quality of buck. Almost similar 10 Black Bengal bucks were selected for the study at Artificial Insemination Centre, Bangladesh Agricultural University, Bangladesh. Prerequisite biological data were collected from each animal before keeping them sun heat and after 1 hour sun exposure. Different semen characteristics of each animal were measured. Temperature humidity index (THI) was 19.95 in the morning which indicate all the animals were in absence of heat stress and THI was 25.54 in the noon which indicate all the animals were in severe heat stress at noon. Buck 1 and buck 5 were more heat resistant (p<0.01), because their thermolysis capacity (TC) values were less than the others. There were no differences in tunica dartos index and semen characteristics among different bucks (p>0.05). Positive correlation between sperm motility and testis length (p<0.05), and negative correlation between sperm concentration and scrotal skin temperature (p<0.05) were found. From the study it can be concluded that all the bucks were in severe heat stress at noon time and TC can be used as an indicator for selection of buck for heat tolerance.J. Environ. Sci. & Natural Resources, 9(1): 151-156 2016

scholarly journals Study on the Application and Efficacy of Responsibility Nursing in Dialysis Care

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Ting Wu ◽  
Meiling Gao ◽  
Jun Shi ◽  
Linfang Xu ◽  
Jing Wang ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Quality Care ◽  
Life Quality ◽  
Depression Scale ◽  
Inflammatory Factors ◽  
Control Group ◽  
High Quality ◽  
Quality Life ◽  
Experimental Group

Providing high-quality care to patients undergoing hemodialysis (HD) is a priority for nurses. The present study was conducted to explore the experiences of the quality of nursing care among patients, nurses, and caregivers in Yanghu Branch of Changzhou Second People’s Hospital, China. A total of 120 hemodialysis patients consecutively admitted to Yanghu Branch of Changzhou Second People’s Hospital were enrolled and divided into two groups according to the nursing method they received: control group (routine nursing) and experimental group (responsibility nursing). The two cohorts were observed and compared for alterations of adverse emotions and inflammatory factors, the incidence of complications, pre-and post-nursing sleep quality, life quality, and patients’ satisfaction with nursing. After nursing, the Self-Rating Anxiety/Depression Scale (SAS/DS) scores were lower in the experimental group (EG) than in the control group (CG) (both P < 0.05 ). Serum IL-6, hs-CRP, and TNF-α were decreased in both groups after nursing and were even lower in EG (both P < 0.05 ). EG had significantly improved sleep quality and life quality than CG, with a higher nursing satisfaction (all P < 0.05 ). This validates that the responsibility nursing for dialysis patients can validly mitigate patients’ negative emotions, improve their quality of life, and ensure high-quality dialysis effect, which is feasible for wide popularization and application in clinics.

scholarly journals A peer evaluation training results in high-quality feedback, as measured over time in nutritional sciences graduate students

2020 ◽  
Vol 44 (2) ◽  
pp. 203-209
Author(s):  
Olivia S. Anderson ◽  
Noura El Habbal ◽  
Dave Bridges
Keyword(s):  
Intervention Group ◽  
Control Group ◽  
Peer Evaluation ◽  
High Quality ◽  
Professional Skills ◽  
Peer Evaluations ◽  
Quality Feedback ◽  
Evaluation Training ◽  
Nutritional Sciences

Peer evaluation skills are not typically taught to students, yet they are expected to provide high-quality feedback to their peers. Gameful learning, a pedagogy supporting student-driven learning, can further reinforce the development of peer evaluation skills, if students are motivated to improve upon them. To better understand the effects of a peer evaluation training on the quality of student-generated peer evaluations, we scored peer evaluations from two cohorts taking a graduate-level nutritional sciences class using gameful learning pedagogy. The intervention group completed a peer evaluation training before engaging in peer reviews, while the control group did not. The training included two readings, a video, and reflection questions. The peer evaluations submitted by both the intervention and control groups were assessed on a validated rubric. The peer evaluation training had a positive effect on the quality of the submitted peer evaluations. The intervention group had a 10.8% higher score on its first submitted peer evaluation compared with controls ( P = 0.003). The intervention group improved the quality of its future submissions by a further 8.9%, whereas the controls did not continue to improve substantially ( P < 0.001). Overall, peer review training enhanced the quality of peer evaluations and allowed students to develop professional skills that they can utilize in any biomedical profession. Our results highlight the importance of peer evaluation training in combination with repeated practice and student-driven learning brought forth by gameful learning pedagogy in improving the quality of evaluations and developing professional skills.

Protective effect of natural antioxidant Opuntia ficus-indica on ram semen quality stored at 5 °C for 72

2021 ◽  
Author(s):  
Larbi ALLAI ◽  
Xavier Druart ◽  
Pinar Terzioğlue ◽  
Noureddine Louanjli ◽  
Boubker Nasser ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Artificial Insemination ◽  
Semen Quality ◽  
Skim Milk ◽  
Butylated Hydroxytoluene ◽  
Emission Spectrometry ◽  
Control Group ◽  
Opuntia Ficus Indica ◽  
Analytical Instruments

Abstract Background Recently, researchers have focused on the use of natural antioxidants to improve semen quality as a key element for successful artificial insemination. In this context the first aim of this study was to determine the antioxidant activity and composition (minerals, vitamins, and sugars) of Opuntia ficus-indica cladode ethanolic extract (ETHEX). A further purpose of the study was to investigate the effect of ETHEX supplementation on the quality of liquid ram semen extended with skim milk (SM) at 5°C. The antioxidant activity of ETHEX was studied using DPPH• assay. The mineral composition and the sugar and vitamin contents of ETHEX were determined using an inductively coupled plasma optical emission spectrometry (ICP-OES), and HPLC-DAD-RID analytical instruments. As a second part, semen was collected from five Boujaâd rams with an artificial vagina. The ejaculates with more than 70 % motility were pooled, extended with skim milk (SM) extender without (control) or supplemented with 1–8 % of ETHEX (37°C; 0.8 × 109 sperm/mL). Sperm quality parameters were assessed at 8, 24, 48 and 72 h. Results The results showed that ETHEX had a higher antioxidant activity compared to those of ascorbic acid and butylated hydroxytoluene (BHT). Furthermore, ETHEX contains a considerable amount of minerals, vitamins, and sugars. The inclusion of 1 or 2 % ETHEX in SM increased the sperm motility, viability, membrane integrity and decreased the abnormality, spontaneous and catalyzed lipids peroxidation (P < 0.05) up to 72 h. In addition, semen diluted with 1 and 2 % ETHEX decreased the level of DNA fragmentation compared to the control group (P < 0.05). Conclusions In conclusion the ETHEX could be recommended to improve the quality of liquid ram spermatozoa. However, its effects on sperm physiology and artificial insemination should be further studied.

The influence of isolation from females and mating frequency on the sexual behaviour and semen quality of young post-pubertal boars

1983 ◽  
Vol 37 (1) ◽  
pp. 49-52 ◽  
Author(s):  
P. H. Hemsworth ◽  
C. G. Winfield ◽  
C. Hansen ◽  
A. W. Makin
Keyword(s):  
Sexual Behaviour ◽  
High Frequency ◽  
Semen Quality ◽  
Mating Frequency ◽  
Semen Characteristics ◽  
Mating Tests

ABSTRACTThree treatments were imposed on three groups of four boars from 26 to 40 weeks of age: a mating frequency of six copulations per week, housed near sexually receptive gilts (M + ♂); not mated, housed near sexually receptive gilts (NM + ♂); and not mated, isolated from female pigs (NM – ♂ ). The M + ♂ boars had similar semen characteristics from 49 to 57 weeks of age to the NM + ♂ and NM – ♂ boars. However, the M + ♂ boars achieved a significantly greater number of copulations (P < 0·05) and spent significantly longer ejaculating (P < 0·05) during the mating tests conducted from 49 to 57 weeks and from 66 to 70 weeks of age than the NM – ♂ boars. It is concluded that isolating young post-pubertal boars from female pigs will reduce their subsequent copulatory performance. Further, mating at a high frequency from 26 to 40 weeks of age does not appear to seriously affect subsequent semen quality.

scholarly journals BEAF QUALITY OF PURE-BRED AND CROSS-BRED BEEF CATTLE OF SIBERIA

2019 ◽  
Vol 48 (5) ◽  
pp. 45-51 ◽  
Author(s):  
B. O. Inerbaev ◽  
N. V. Borisov
Keyword(s):  
Meat Quality ◽  
Biochemical Composition ◽  
Relative Mass ◽  
Control Group ◽  
General View ◽  
Housing Conditions ◽  
High Quality ◽  
Slaughter Weight ◽  
Positive Effect

The paper presents requirements to high-quality beef in terms of its general view, biochemical composition, taste and nutritional properties. The parameters which determine the taste, aroma, juiciness, tenderness of meat, as well as the strength and richness of the broth are given. Quality of beef obtained from animals of different beef breeds and their hybrids was assessed. Meat quality of the Hereford breed is higher than that of other most common breeds by the main parameters. The effect of the cow class on the meatproductivity of the young Hereford bulls was experimentally established. They were superior to animals of the control group in pre-slaughter weight by 25 kg (6.4%), slaughter weight - by 15.4 kg (7.5%), relative mass of flesh - by 7.8 kg, half-carcass weight - by 8.1 kg (7.6%). At the age of 20 months Hereford x Simmental steers of the 1st generation and heifers of the 3rd generation were characterized by high quality meat. Depending on housing conditions (with an area of 3.5 m 2 per head), the Kazakh-white-headed x Simmental steers of the 1st generation were in the lead in terms of meat quality. When fattened at the site, the Kazakh-white-headed x young Simmental bulls and heifers of the 1st generation were superior. The positive effect of semen production of Australian stud bulls on meat marbling of Siberian analogues (6 points) was experimentally proven. A new accelerated method of taking a sample of meat for research is described. In this method probes are taken from four easily accessible large muscles: m. supraspinatus, longissimus dorsi, m. iliopsoas (fillet), m. semimembranosus. Their biochemical composition is determined, after which the quality composition of carcass flesh is defined by a special formula with allowance for correction factors.

scholarly journals Effect of adding Manganese chloride and Co-enzymes (α-lipoic acid and Q10) on post-cryopreservation semen quality characteristics of Holstein bulls

2018 ◽  
Vol 41 (2) ◽  
pp. 86-93
Author(s):  
Eidan S. M.
Keyword(s):  
Lipoic Acid ◽  
Semen Quality ◽  
Manganese Chloride ◽  
Control Group ◽  
Control Groups ◽  
Holstein Bulls ◽  
Animal Resource ◽  
Fresh Semen ◽  
Artificial Vagina

     This study was undertaken to explore the adding effect of manganese chloride (MnCl2), co-enzyme Q10 (Co-Q10) as well as α-lipoic acid to Tris extender on Freeze ability of Holstein bulls’ semen. This study was carried out at the department of artificial insemination at the Directorate of Animal Resource, Ministry of Agriculture in Abu-Ghraib, Baghdad for the duration from October\ 2013 to Jun\ 2014, including three experiments. Seven Holstein bulls of 3.5-4 years old were used in this study. Semen was collected via artificial vagina by one ejaculate/ bull/ week. The assessments were conducted for fresh semen, which was later pooled, equally divided for various treatments within each experiment, using Tris extender. In the first experiment, pooled semen was divided into three groups. First group was diluted with Tris only. Manganese chloride was added to Tris extender (0.7 mM) in the 2nd group while in 3rd group (0.9 mM) of the Manganese chloride was used. In the second experiment, semen was divided equally into three groups. The first group was considered as a control group diluted with Tris only. Co-enzyme Q10 was added to 2nd (0.2 mM) and 3rd groups (0.5 mM) treatments respectively. In the third experiment, semen was divided into three groups. The first group was diluted with Tris only (control group). While the 2nd and 3rd groups were added 0.5 and 1.0 mM α-lipoic acid respectively. The effect of these additions on Holstein bulls semen quality was studied during different periods (48 hours, one, two and three months post cryopreservation) for three experiments. The results revealed that the addition two levels of the MnCl2 (2nd and 3rd, experiment 1), Co- Q10  (2nd and 3rd, experiment 2) and α- lipoic acid (2nd and 3rd experiment 3) led to significant increases freezability as compared with control groups during all the experiment periods. In conclusion, the addition of MnCl2, Co-Q10 and α-lipoic acid led to improved post-cryopreservation semen quality of Holstein bulls. This will in turn enhance fertility rate of artificially-inseminated cows and owners economic income consequently.

scholarly journals The Effect of the Separation of Spermatozoa X and Y Using Swim up Method on the Quality of Etawah Crossbreed Goats Spermatozoa

2014 ◽  
Vol 10 (2) ◽  
Author(s):  
Eskayanti Pasaribu ◽  
Dasrul Dasrul ◽  
Ginta Riady
Keyword(s):  
Semen Quality ◽  
Control Group ◽  
Spermatozoa Motility ◽  
Treatment Groups ◽  
Multiple Test ◽  
Group 3 ◽  
The Mean ◽  
Group 2 ◽  
Method Group

This research aimed to determine the effect of spermatozoa X and Y separation using swim-up method on the quality of etawah crossbreed goat’s spermatozoa. This research used 6 male etawah crossbreed goats aged between 18-24 months, which were collected the semen once a week using electroejaculator. Immediately after semen collection, the quality of semen was examined, and then grouped into three treatment groups. Group 1 was control group (P0) refers to the semen was not separated by swim-up method. Group 2 (P1) was the semen separated by the swim-up method for 5 minutes. Group 3 (P2) was the semen separated by swim-up method for 10 minutes. Each treatment was repeated six times. Parameters for semen quality examined were the percentage of spermatozoa motility, live spermatozoa, and abnormal spermatozoa. Data were analyzed by analysis of variance (ANOVA) one way pattern, followed by Duncan's multiple test. The results showed that the mean ± SD percentage of sperm motility on each treatment groups (P0; P1; P2) was 81.33±3.44, 89.67±3.21, and 90.00±3.10 %, respectively. The percentage of live spermatozoa on each group was 86.50 ± 2.07, 92.33 ± 2.08, and 91.83 ± 1.72%, respectively. The percentage of abnormal spermatozoa on each group was 13.00±2.53, 7.33±2.52, and 7.67±2.16%, respectively. Results of this research showed that the percentages of motility, live spermatozoa, and abnormal spermatozoa after separation by swim-up method were significantly different (P0.05) compared to without separation. It can be concluded that the separation of spermatozoa using swim-up method can improve significantly (P0.05) the percentage of live and motility of spermatozoa and decrease the percentage of abnormal spermatozoa of etawah crossbreed goats.Key words: Etawah crossbreed, spermatozoa quality, swim-up method

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