Monitoring of libido and semen quality parameters in melatonin-treated French alpine bucks during the non-breeding season

2017 ◽  
Vol 52 (6) ◽  
pp. 953-961 ◽  
Author(s):  
S Vince ◽  
H Valpotić ◽  
V Berta ◽  
S Milinković-Tur ◽  
M Samardžija ◽  
...  
Keyword(s):  
Breeding Season ◽  
Semen Quality ◽  
Quality Parameters

scholarly journals Seasonal variations in quantitative and qualitative sperm characteristics in fertile and subfertile stallions

2020 ◽  
Vol 63 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Yara Suliman ◽  
Frank Becker ◽  
Armin Tuchscherer ◽  
Klaus Wimmers
Keyword(s):  
Breeding Season ◽  
Seasonal Variations ◽  
Semen Quality ◽  
Semen Analysis ◽  
Sperm Concentration ◽  
Quality Parameters ◽  
Computer Assisted ◽  
Normal Sperm ◽  
Straight Line ◽  
Significant Seasonal Variation

Abstract. Horses are seasonal breeders with a natural breeding season beginning in spring and extending through midsummer. In this study, quantitative and qualitative parameters of chilled stallion semen were compared between fertile and subfertile stallions and between the breeding and the non-breeding season. Semen quality parameters compared included ejaculate volume, sperm concentration, total sperm number, sperm morphology, and computer-assisted semen analysis (CASA)-derived sperm movement characteristics obtained from two groups of warmblood stallions (n=8; four fertile stallions and four subfertile stallions), which differ in the seasonal pregnancy rate 80 %–90 % (fertile) vs. 40 %–60 % (subfertile). A total of 64 ejaculates were collected from the stallions (n=8; four in the breeding season and four in the non-breeding season of each stallion). No significant differences in the semen quality parameters between the fertile and the subfertile stallions in the non-breeding season were observed. However, in the breeding season the proportion of morphologically normal sperm, total motility, progressive motility, average path velocity (VAP), and curvilinear velocity (VCL) were significantly higher in the fertile group (P<0.05) when compared with the subfertile group. In addition, a significant seasonal variation in the proportion of morphological normal sperm was found in the fertile group between the breeding and the non-breeding season (P<0.05). Moreover, significant seasonal variations (P<0.05) in CASA parameters of mean VAP, straight line velocity (VSL), and beat-cross frequency (BCF) were observed in the fertile and the subfertile stallions, which tended to be lower in the non-breeding season. In conclusion, differences between the fertile and the subfertile stallions were observed only in the breeding season, and a few of CASA-derived parameters seemed to be significantly lower during the non-breeding season in both the fertile and the subfertile stallions.

Semen quality parameters as fertility predictors of water buffalo bull spermatozoa during low-breeding season

2016 ◽  
Vol 86 (6) ◽  
pp. 1516-1522 ◽  
Author(s):  
Hussain Ahmed ◽  
S. Murtaza Hassan Andrabi ◽  
Sarwat Jahan
Keyword(s):  
Breeding Season ◽  
Water Buffalo ◽  
Semen Quality ◽  
Quality Parameters

A diagnostic method for gander selection in Zi geese (Anser cygnoides L.) and Rhin geese (Anser anser L.) using massage reaction and semen quality

2014 ◽  
Vol 54 (5) ◽  
pp. 569
Author(s):  
S. J. Liu ◽  
J. L. Li ◽  
H. Li
Keyword(s):  
Breeding Season ◽  
Semen Quality ◽  
Quality Parameters ◽  
Anser Anser ◽  
Laboratory Assessment ◽  
Semen Collection ◽  
Semen Volume ◽  
Natural Breeding ◽  
Egg Fertility ◽  
Selection Of

The objective of this study was to score reactions to artificial semen collection procedures and to develop an efficient method for gander selection in two original geese breeds. One-hundred and three Zi geese and 110 Rhin geese were used. Gander reaction scores to massage and semen quality parameters were investigated in 10 Zi and 10 Rhin ganders during a complete reproductive season. The relationships between average gander massage reaction score and semen quality were evaluated. After natural mating, egg fertility comparison between Zi ganders selected by massage reaction scores and those not subjected to selection were investigated. Ganders exhibited large variations in artificial semen collection and semen characteristics between breeds. Only 30.1% (31/103) of Zi geese and 46.3% (51/110) of Rhin geese had stable positive massage reactions with semen ejaculation (P < 0.05). Average massage reaction score, ejaculate volume, spermatozoa concentration, sperm motility and semen quality factor for single ejaculate were significantly higher in Zi than in Rhin geese. There was a high correlation between average massage reaction score and semen volume, being 0.87 for Zi geese (P < 0.05) and 0.82 for Rhin (P < 0.05), and this correlation enabled pre-selection of ganders at the beginning of the breeding season. Reproductive efficiency could be improved with massage-selected ganders in natural breeding flocks. Examination of gander massage reaction scores combined with laboratory assessment of semen quality early in the breeding season is a feasible method for predicting fertilising capability of ganders.

Quality of ram spermatozoa separated with modified swim up method

2018 ◽  
Vol 33 (2) ◽  
pp. 62-70 ◽  
Author(s):  
A Hossain ◽  
MM Islam ◽  
F Naznin ◽  
RN Ferdousi ◽  
FY Bari ◽  
...  
Keyword(s):  
Semen Quality ◽  
Membrane Integrity ◽  
Quality Parameters ◽  
Fluid Medium ◽  
Normal Morphology ◽  
The Mean ◽  
Mass Activity ◽  
Fresh Semen ◽  
Artificial Vagina

Semen was collected from four rams, using artificial vagina and viability%, motility% and plasma membrane integrity% were measured. Fresh ejaculates (n = 32) were separated by modified swim-up separation using modified human tubal fluid medium. Four fractions of supernatant were collected at 15-minute intervals. The mean volume, mass activity, concentration, motility%, viability%, normal morphology and membrane integrity% (HOST +ve) of fresh semen were 1.0 ± 0.14, 4.1 ± 0.1 × 109 spermatozoa/ml, 85.0 ± 1.3, 89.4 ± 1.0, 85.5 ± 0.7, 84.7 ± 0.5 respectively. There was no significant (P>0.05) difference in fresh semen quality parameters between rams. The motility%, viability% and HOST +ve % of first, second, third and fourth fractions were 53.4 ± 0.5, 68.2 ± 0.3, 74.8 ± 0.3 and 65.5 ± 0.4; 55.5 ± 0.4, 66.2 ± 0.4, 74.5 ± 0.3 and 73.6 ± 0.3 and 66.7 ± 0.5, 66.8 ± 0.5, 65.2 ± 0.4 and 74.7 ± 0.5 respectively. The motility%, viability% and membrane integrity% of separated semen samples differed significantly (P<0.05) between four fractions. The mean motility% and viability% were significantly higher (P<0.05) in third fraction (74.8 ± 0.3%), whereas the mean HOST +ve% was significantly higher (P<0.05) in fourth fraction (74.7 ± 0.5). All quality parameters of separated spermatozoa were significantly (P<0.05) lower than that of fresh semen. The pregnancy rates were higher with fresh semen (71%) in comparison to that of separated sample (57%).Bangl. vet. 2016. Vol. 33, No. 2, 62-70

scholarly journals Semen Quality Parameters Among U.S. Veterans of Operation Enduring Freedom, Operation Iraqi Freedom, and Operation New Dawn

2017 ◽  
Vol 182 (5) ◽  
pp. e1775-e1781
Author(s):  
Luke A. Lindaman ◽  
J. Richard Pilsner ◽  
Aimee R. Kroll-Desrosiers ◽  
Sally Haskell ◽  
Cynthia A. Brandt ◽  
...  
Keyword(s):  
Semen Quality ◽  
Operation Iraqi Freedom ◽  
Quality Parameters ◽  
Operation Enduring Freedom ◽  
Iraqi Freedom

Effect of FMD vaccination on semen quality parameters in Karan Fries and Murrah buffalo bulls

2010 ◽  
Vol 42 (7) ◽  
pp. 1363-1366 ◽  
Author(s):  
Mukesh Bhakat ◽  
Tushar K. Mohanty ◽  
Ashok K. Gupta ◽  
Virendra S. Raina ◽  
Biswajit Brahma ◽  
...  
Keyword(s):  
Semen Quality ◽  
Quality Parameters ◽  
Murrah Buffalo ◽  
Karan Fries

scholarly journals Influence of Non-Genetic Factors on Semen Quality Parameters in Crossbred Jersey (Bos taurus x Bos indicus) Bulls

2018 ◽  
Vol 7 (04) ◽  
pp. 2994-3004
Author(s):  
Alagappan Gopinathan ◽  
Salem Nagalingam Sivaselvam ◽  
Sarojini Kanniappan Karthickeyan ◽  
Ragothaman Venkataramanan
Keyword(s):  
Genetic Factors ◽  
Bos Taurus ◽  
Semen Quality ◽  
Bos Indicus ◽  
Quality Parameters

scholarly journals Evaluating bull fertility based on non-return method

2012 ◽  
Vol 66 (1-2) ◽  
pp. 27-40
Author(s):  
Igor Prka ◽  
Dragan Vukovic ◽  
Stevan Perkovic
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Quality Parameters ◽  
Semen Parameters ◽  
Service Period ◽  
Microscopic Evaluation ◽  
Live Sperm ◽  
Return Method ◽  
The Impact ◽  
First Time

In order to evaluate the results of reproductive cows and heifers, different parameters of fertility are used, such as the service period, insemination index, intercalving time and others, and of the breeding bulls the values obtained through non-return. An ejaculate is taken up for further processing by veterinary centres only provided it meets the prescribed quality parameters. Rating semen parameters includes a macroscopic (volume, colour, consistency, smell and pH) and a microscopic evaluation (mobility, density, percentage of live sperm and abnormal and damaged sperm). In addition to sperm quality and the fertility of the female animal, the results of the non-return method are also influenced by a number of exogenous causes (season, age, race, insemination techniques) that have no small impact on the end result of insemination - pregnancy. In order to obtain more objective results of the fertility of bulls the following tasks were undertaken, namely: 1. to calculate with the non-return method the fertility of bulls in over 10,000 cows inseminated for the first time during a period of 6 years; and 2. to analyze the impact of semen quality, season, age of cow and bull, and the bull breed on the results of fertility.

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