Relationships between feed efficiency, scrotal circumference, and semen quality traits in yearling bulls

2012 ◽  
Vol 90 (11) ◽  
pp. 3937-3944 ◽  
Author(s):  
A. N. Hafla ◽  
P. A. Lancaster ◽  
G. E. Carstens ◽  
D. W. Forrest ◽  
J. T. Fox ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Semen Quality ◽  
Quality Traits ◽  
Scrotal Circumference

scholarly journals 96 Estimation of the genetic parameters of beef bull semen attributes

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 26-26
Author(s):  
Madison L Butler ◽  
Jennifer M Bormann ◽  
Robert L Weaber ◽  
David M Grieger ◽  
Megan M Rolf
Keyword(s):  
Fixed Effects ◽  
Semen Quality ◽  
Critical Factor ◽  
Production Costs ◽  
Quality Traits ◽  
Forward Selection ◽  
Bull Semen ◽  
Scrotal Circumference ◽  
Beef Bull ◽  
Heritability Estimates

Abstract Fertility is a critical factor in cattle production because it directly relates to producing offspring to offset production costs. A number of semen attributes are believed to affect fertility and are frequently measured as part of routine breeding soundness exams or semen collection procedures. The objective of this study was to estimate the variance components for different semen quantity and quality traits that may influence fertility using phenotypes collected on 369 Simmental bulls. A total of 7,436 bull collection records including volume and concentration were obtained from two bull studs and evaluated utilizing a linear univariate animal model with repeated records. The five-generation pedigree used in the analysis consisted of 3,336 sires and 7,225 dams. Volume is the total amount of ejaculate and measured as milliliters of total ejaculate. Volume measurements ranged from 0.100 to 41.30 milliliters, with an average of 7.599 milliliters. Concentration is a measurement of millions of spermatozoa per milliliter. Concentration measurements ranged from 10 to 3,651 with an average of 1,053 million spermatozoa per milliliter. Fixed effects were included in the model if the effect was significant (P ≤ 0.05) for either backward or forward selection. Fixed effects included bull owner, collection center, location within center, collection day within year as a Julian day, collection year fit as class variables. Fixed effects fit as covariates included age of bull at collection (linear and quadratic), days since previous collection (linear and quadratic), and scrotal circumference (quadratic). Heritability estimates of volume and concentration were 0.43 ± 0.14 and 0.40 ± 0.15. These moderate heritability estimates indicate genetic improvement can be made in beef bull semen quality traits through selection.

scholarly journals Relationships Among Age, Body Weight, Scrotal Circumference, Semen Quality and Peripheral Testosterone and Estradiol Concentrations in Pubertal and Postpubertal Holstein Bulls

2008 ◽  
Vol 70 (1) ◽  
pp. 119-121 ◽  
Author(s):  
Bhuminand DEVKOTA ◽  
Tsugio KOSEKI ◽  
Motozumi MATSUI ◽  
Motoki SASAKI ◽  
Etsushi KANEKO ◽  
...  
Keyword(s):  
Body Weight ◽  
Semen Quality ◽  
Scrotal Circumference ◽  
Holstein Bulls

scholarly journals Comparative study of semen quality traits between Etawah grade and Senduro bucks

2021 ◽  
Vol 888 (1) ◽  
pp. 012022
Author(s):  
N Isnaini ◽  
A A Hakim ◽  
D Amertaningtyas ◽  
H E Sulistyo ◽  
A Irsyammawati ◽  
...  
Keyword(s):  
Comparative Study ◽  
Artificial Insemination ◽  
Recovery Rate ◽  
Semen Quality ◽  
T Test ◽  
Quality Traits ◽  
Spermatozoa Motility ◽  
Frozen Semen ◽  
Semen Volume

Abstract This study compared the semen quality traits between Etawah grade (EGB) and Senduro bucks (SB) raised in Singosari National Artificial Insemination Center, Indonesia. A total of 96 ejaculated semen were collected from three EGB and three SB with an average age of three years. The ejaculates were evaluated for semen volume (SV), spermatozoa concentration (SC), total spermatozoa (TS), spermatozoa motility (SM), post-thawing spermatozoa motility (PTSM), the recovery rate of spermatozoa motility (RRSM), and frozen semen production (FSP). Data of SV, SM, PTSM, and RRSM were compared using the Mann-Whitney U test. While the data of SC, TS, and FSP were analyzed using an independent t-test. The results showed that SV, SM, PTSM, and RRSM were not significantly differed (P>0.05) between breeds. Whereas, SC, TS, and FSP of EGB were significantly higher (P<0.05) than SB. Therefore, it can be concluded that Etawah grade bucks can produce higher total spermatozoa and as a result higher frozen semen production for artificial insemination as compared to Senduro bucks.

scholarly journals Repeatability and Phenotypic Correlation Among Semen Quality Traits in Holstein Bulls

2018 ◽  
Vol 42 (4) ◽  
Author(s):  
Argi Argiris ◽  
Siswanto Imam Santoso ◽  
Yon Supri Ondho ◽  
Edy Kurnianto
Keyword(s):  
Artificial Insemination ◽  
Semen Quality ◽  
Intraclass Correlation ◽  
Correlation Method ◽  
Phenotypic Correlation ◽  
Quality Traits ◽  
Frozen Semen ◽  
Holstein Bulls ◽  
Fresh Semen ◽  
Selection Of

The purpose of this research was to analysis the value of repeatability and correlation among the traits affecting the production of frozen semen from Holstein’s bull in Indonesia. Repeatability and correlation were calculated based on the data of frozen semen production of 15.699 records from 44 Holstein bulls at Singosari Artificial Insemination Center (SAIC) and 8.935 records from 39 Holstein bulls at Lembang Artificial Insemination Center (LAIC). Repeatability for volume, motility, fresh semen concentration and frozen semen production was evaluated by intraclass correlation method. The repeatability values of LAIC for volume, motility, fresh semen concentration and frozen semen production were 0.60; 0.54; 0.37 and 0.47. The repeatability values of SAIC for volume, motility, fresh semen concentration and frozen semen production were 0.54; 0.30; 0.43 and 0.29. The linear correlation value between volume, motility and fresh semen concentration with the amount of semen produced per collections were 0.41, 0.36, and 0.58. Concentration was the most factors influencing the number of frozen semen produced. The effectiveness of the selection of Holstein's frozen semen producing could be determined by the value of repeatability and the phenotypic correlation among semen quality traits such as volume, motility, concentration and frozen semen production.

Male traits and herd reproductive capability in tropical beef cattle. 2. Genetic parameters of bull traits

2013 ◽  
Vol 53 (2) ◽  
pp. 101 ◽  
Author(s):  
N. J. Corbet ◽  
B. M. Burns ◽  
D. J. Johnston ◽  
M. L. Wolcott ◽  
D. H. Corbet ◽  
...  
Keyword(s):  
Body Condition ◽  
Semen Quality ◽  
Body Condition Score ◽  
Progressive Motility ◽  
Scrotal Circumference ◽  
Normal Sperm ◽  
Igf I ◽  
Condition Score ◽  
Mass Activity ◽  
Percent Normal

A total of 4063 young bulls of two tropical genotypes (1639 Brahman and 2424 Tropical Composite) raised in northern Australia were evaluated for a comprehensive range of production and reproduction traits up to 24 months of age. Prior to weaning, peripheral blood concentrations of luteinising hormone (LH) and inhibin were measured at 4 months of age. At weaning (6 months) blood insulin-like growth factor-1 (IGF-I) and flight time were recorded. Body composition traits of fat depth and eye-muscle area were determined by ultrasonography at 15 months of age when additional measurements of liveweight, hip height and body condition score were recorded. Bull breeding soundness was evaluated at ~12, 18 and 24 months of age when measurements of scrotal circumference, sheath score, semen mass activity, progressive motility of individual sperm and percent morphologically normal sperm were recorded. Magnitude of heritability and genetic correlations changed across time for some traits. Heritability of LH, inhibin, IGF-I and of 18-month scrotal circumference, mass activity, progressive motility and percent normal sperm was 0.31, 0.74, 0.44, 0.75, 0.24, 0.15 and 0.25, respectively, for Brahmans and 0.48, 0.72, 0.36, 0.43, 0.13, 0.15 and 0.20, respectively, for Tropical Composites. Inhibin and IGF-I had moderate genetic association with percent normal sperm at 24 months in Brahmans but low to negligible associations in Tropical Composites. Body condition score in Brahmans and sperm motility (mass and individual) traits in both genotypes had moderate to strong genetic correlation with percent normal sperm and may prove useful candidates for indirect selection. There is scope to increase scrotal circumference by selection and this will be associated with favourable correlated responses of improved semen quality in both genotypes. The lack of genetic antagonism among bull traits indicates that selection for improved semen quality will not adversely affect other production traits.

Semen Quality Traits of Seven Strain of Chickens Raised in the Humid Tropics

2008 ◽  
Vol 7 (10) ◽  
pp. 949-953 ◽  
Author(s):  
S.O. Peters ◽  
O.D. Shoyebo ◽  
B.M. Ilori ◽  
M.O. Ozoje ◽  
C.O.N. Ikeobi ◽  
...  
Keyword(s):  
Semen Quality ◽  
Humid Tropics ◽  
Quality Traits

scholarly journals Evaluation of sperm motility and velocity of different genetic groups of bucks using Computer-Assisted Sperm Analyzer

2020 ◽  
Vol 48 (2) ◽  
pp. 67-74
Author(s):  
MR Islam ◽  
MKU Talukder ◽  
MS Rahman ◽  
SS Husain
Keyword(s):  
Semen Quality ◽  
Computer Assisted ◽  
Scrotal Circumference ◽  
Future Performance ◽  
Genetic Groups ◽  
Straight Line ◽  
Semen Volume ◽  
Path Distance ◽  
Positive Correlations ◽  
Better Than

Semen quality assessment is a prime prerequisite for any breeding programme. Computer-Assisted Sperm Analyzer (CASA) can measure the semen quality very accurately and sharply. The research was conducted at American Dairy Limited (ADL) at Vangnahati, Sreepur, Gazipur. A total of 120 ejaculates were collected from three genetic groups of bucks namely Black Bengal (BB), Boer and Jamunapari (JP) with a view to characterize and compare the semen motility and velocity parameters using Computer- Assisted Sperm Analyser. Significantly (p<0.05) higher ejaculate volume was found in Boer buck (1.73±0.16 ml) with the lower in BB buck (0.98±0.14), respectively. But significantly (p<0.05) higher total, forward progressive and fast motility was found in BB (55.47±3.17, 47.23±2.74 and 37.62±2.40%) and lower in JP (40.67±3.37, 30.97±2.91 and 21.81±2.55%), respectively. Significantly (p<0.01) fastest straight line and average path distance was observed in Boer bucks (12.29±1.63 and 15.89±1.95 μm) than Black Bengal and Jamunapari bucks (4.38±1.19 and 7.26±1.57; and 3.14±1.27 and 8.42±1.95 μm), respectively. The distance curved line (DCL) and distance straight line (DSL) was significantly (p<0.05) higher in Boer (29.13±4.87, 12.29±1.63 and 15.89±1.95 _m/sec) and lower in BB (22.07±4.36 and 7.26±1.57 _m/sec), respectively. In case of curvilinear velocity, straight line velocity and average path velocity value was significantly (p<0.01) higher in Boer (127.08±13.88, 50.01±7.68 and 68.13±7.25 _m/sec) with lower in JP (62.01±12.77, 15.75±7.35 and 22.39±9.42) where as linearity and straightness was higher in Boer and lower in BB (p>0.05), respectively. The scrotal circumference had positive correlations with semen volume and curvilinear velocity for all the genotypes. It was concluded that semen of Boer bucks found consistently better than other two genetic groups of bucks. Further, competitive studies with large sample may be performed to evaluate the breed specific differences in available goat breeds. I think this study also disclosed the some rare parameters of semen quality by using Computer-Assisted Sperm Analyzer which was impossible in manually. These results of the present study could be an authentic guideline in future performance tests of different genetic groups of bucks. Bang. J. Anim. Sci. 2019. 48 (2): 67-74

Heterosis, direct and maternal genetic effects on semen quality traits of rabbits

2006 ◽  
Vol 100 (2-3) ◽  
pp. 111-120 ◽  
Author(s):  
M. García-Tomás ◽  
J. Sánchez ◽  
O. Rafel ◽  
J. Ramon ◽  
M. Piles
Keyword(s):  
Semen Quality ◽  
Genetic Effects ◽  
Quality Traits

261 HIGH NUTRITION DURING EARLY LIFE IMPROVES REPRODUCTIVE POTENTIAL OF HOLSTEIN BULLS

2015 ◽  
Vol 27 (1) ◽  
pp. 220
Author(s):  
A. Dance ◽  
J. Thundathil ◽  
R. Wilde ◽  
P. Blondin ◽  
J. Kastelic
Keyword(s):  
Early Life ◽  
Semen Quality ◽  
Reproductive Potential ◽  
National Research Council ◽  
Developmental Competence ◽  
Scrotal Circumference ◽  
Bull Calves ◽  
Fertilizing Ability ◽  
Holstein Bulls ◽  
Dairy Bull

The objective was to determine effects of early-life nutrition on reproductive potential of Holstein bulls. Twenty-six bull calves were randomly allotted to 3 groups and fed ~70, 100, or 130% of National Research Council recommendations for both energy and protein from 2 to 31 wk; thereafter, all were fed a 100% diet (adequate vitamins and minerals were constantly available) until slaughter (72 wk). Growth rate, scrotal circumference, and paired testis volume were determined every 4 wk during the differential feeding period. Once scrotal circumference reached 26 cm, semen collection was attempted (to confirm puberty). Post-pubertal semen quality was monitored; once bulls were producing 70% morphologically normal sperm, semen was cryopreserved (programmable freezer). These semen samples (3 bulls per group and 3 ejaculates per bull) were used in an IVF system to determine the fertilizing ability of sperm and developmental competence of resulting embryos. In the low-, medium-, and high-nutrition groups, respectively, bulls were 369.3 ± 14.1, 327.4 ± 9.5, and 324.3 ± 11.7 days at puberty; their paired testes weights were 561.6 ± 23.1, 611.1 ± 59.1, and 727 ± 33.0 g; cleavage rates were 68.0 ± 8.7, 77.1 ± 3.5, and 68.7 ± 4.5%; and blastocyst rates were 31.5 ± 5.6, 41.4 ± 4.9, and 33.7 ± 4.6% (no significant differences among the 3 nutrition groups for rates of cleavage or blastocyst formation). We concluded that early-life supplementation of energy and protein hastened puberty (P < 0.05) and increased testicular size (P < 0.05), without compromising sperm fertilizing ability. Therefore, feeding dairy bull calves a high plane of nutrition early in life is recommended as a management strategy to improve their reproductive potential.

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