SCROTAL CIRCUMFERENCE, SEMEN CHARACTERISTICS, GROWTH PARAMETERS AND THEIR RELATIONSHIPS IN YOUNG BEEF BULLS

1985 ◽  
Vol 65 (4) ◽  
pp. 789-798 ◽  
Author(s):  
M. MAKARECHIAN ◽  
A. FARID ◽  
R. T. BERG
Keyword(s):  
Semen Quality ◽  
Growth Parameters ◽  
Scrotal Circumference ◽  
Three Samples ◽  
Semen Volume ◽  
Semen Characteristics ◽  
The Mean ◽  
Beef Bulls ◽  
The Relationship ◽  
Daily Gain

The records of sixty-six yearling and 2-yr-old beef bulls selected for breeding in 1980 and 1981 were used to study the relationships between body weight (BW) and gain measurements, scrotal circumference (SC) and semen characteristics in young beef bulls. The bulls belonged to four breed groups; Hereford, Beef Synthetic, Dairy Synthetic and Pee Wee. A week before the start of breeding season, the bulls were weighed and measured for scrotal circumference. A single prebreeding semen sample was collected by electro-ejaculator from each bull in 1980, while three samples (pre-, mid- and postbreeding) were collected by artificial vagina in 1981. The mean SC ranged from 31.3 cm in the Pee Wee to 38.6 cm in the Beef Synthetic, while SC per 100 kg BW was maximum in the Pee Wee (8.36%) and minimum in the Dairy Synthetic group (6.28%, P < 0.05). The relationship between BW and SC was linear within yearling and 2-yr-old bulls. Age did not have any effect on SC over and above BW within each age group. Preweaning daily gain accounted for a higher fraction of variation in SC compared to BW in all the breed groups except Dairy Synthetic. The relationships between BW, SC and feedlot daily gain with semen quality and quantity were positive but generally small (r < 0.30, P > 0.11). Semen volume and sperm motility had lower values and percent secondary abnormalities were higher in prebreeding compared with mid- or postbreeding samples. Repeatability estimates of the semen characteristics were generally low, ranging from 0 to 0.49. Key words: Beef bulls, scrotal circumference, semen characteristics, growth rate

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

Comparison of McCarthy General Cognitive Index and Wisc-R IQ for Educable Mentally Retarded, Learning Disabled, and Normal Children

1980 ◽  
Vol 47 (2) ◽  
pp. 591-596 ◽  
Author(s):  
Jack A. Naglieri
Keyword(s):  
Mentally Retarded ◽  
Learning Disabled ◽  
Full Scale ◽  
Normal Children ◽  
Three Samples ◽  
The Mean ◽  
Educable Mentally Retarded ◽  
The Relationship ◽  
Selection Of

The relationship between the McCarthy General Cognitive Index and the WISC-R Full Scale IQ was examined for 20 educable mentally retarded, 20 learning disabled, and 20 normal children aged 6 to 8½ yr. Selection of children was conducted so that the three groups would be comparable with res pea to age, sex, and race. The mean McCarthy Indexes for the retarded and learning disabled samples were significantly lower than the mean WISC-R Full Scale IQs. When the Index and Full Scale IQ were converted to a common metric and compared, the mean index for the retarded and learning disabled samples remained lower than the Full Scale IQs, although the differences were nonsignificant. The measures correlated significantly for all three samples and ranged from .51 to .82.

Relationships between growth parameters and scrotal circumference in young beef bulls

1984 ◽  
Vol 22 (6) ◽  
pp. 667-674 ◽  
Author(s):  
M. Makarechian ◽  
A. Farid ◽  
R.T. Berg
Keyword(s):  
Growth Parameters ◽  
Scrotal Circumference ◽  
Beef Bulls

EVALUATION OF BULL AND COW FERTILITY AT PASTURE IN SINGLE-SIRE MATING

1985 ◽  
Vol 65 (4) ◽  
pp. 799-809 ◽  
Author(s):  
M. MAKARECHIAN ◽  
A. FARID ◽  
R. T. BERG
Keyword(s):  
Body Weight ◽  
Pregnancy Rate ◽  
Average Daily Gain ◽  
Beef Cows ◽  
Pregnancy Rates ◽  
Low Fertility ◽  
Scrotal Circumference ◽  
Semen Volume ◽  
Calving Season ◽  
Daily Gain

Pregnancy rates and calving dates of beef cows in 27 single-sire breeding herds mated to yearling or 2-yr old bulls were used in this study. The breed groups of bulls were Hereford and Beef Synthetic and cow herds were Hereford, Hereford cross and Beef Synthetic, respectively. A week before the start of the breeding season the bulls were scored for libido, their scrotal circumferences were measured and semen samples were collected. Semen volume, sperm motility and percent normal cells were evaluated. The average bull to cow ratio was 1:20. Pregnancy rate increased as age and body weight of cows increased, but it was independent of the previous calving date. Calving date was not related to body weight or age of cow, but it was influenced by the previous calving date. Each day delay in calving after the first 5 wk of calving season resulted in a 0.7-day delay in the date of calving during the next calving season. The Beef Synthetic-sired herds had higher pregnancy rates (P < 0.05) than the Hereford-sired herds, but the average calving dates of the two groups were similar. Cows mated to 2-yr-old bulls had 5% higher (P = 0.12) pregnancy rate than those mated to yearling bulls. Five of the herds showed low fertility and late calving, probably due to low fertility of the bulls. Yearling weight and feedlot average daily gain were positively (P < 0.05) related to bull fertility. The number of services performed by a bull during a 10 min libido test and total libido score were also found to be useful in assessing bull fertility, but scrotal circumference or semen traits were not related to fertility of bulls when used in single-sire mating at pasture. Key words: Beef cattle, bull fertility, single-sire mating

scholarly journals Influence of age on the spermiogramic parameters of native sheep

1970 ◽  
Vol 7 (2) ◽  
pp. 301-304 ◽  
Author(s):  
MR Hassan ◽  
S Pervage ◽  
M Ershaduzzaman ◽  
MAI Talukder
Keyword(s):  
Semen Quality ◽  
Age Groups ◽  
Sperm Concentration ◽  
Live Weight ◽  
Scrotal Circumference ◽  
Semen Volume ◽  
Native Sheep

The study was conducted to evaluate the qualities of ram semen in different age groups (one to four years) were evaluated. The parameters included testes length (cm), testes breadth (cm), scrotal circumference (cm), live weight (kg), semen volume (ml), PH, sperm concentration (x109), motility (%), percentage of live, dead and normal, abnormal spermatozoa of native sheep. The average semen volume (ml) found to be 0.60, 0.91, 0.85 and 0.87; sperm concentration (109/ml) 1.03, 3.27, 4.45 and 4.17 and finally motility (%) were found to be 68.07, 75.03, 75.01 and 76.25 respectively for the 1st, 2nd, 3rd and 4th year age of native ram. The effects of age on all parameters (testes length, semen volume, semen pH, sperm concentration, motility, viability, normal spermatozoa) were significant except testes breadth and scrotal circumference. The value of all of these parameters increased linearly up to three years with the increase of age except PH. The result of the present study indicated that scrotal diameter, serving capacity; normal and live spermatozoa were comparatively better during the 3rd year than the 1st and 2nd year of age while the values were almost similar at 3rd and 4th year of age. With the increasing of age, the semen quality improved and stabilized up to at the age of 3 years. Keywords: Native sheep; Spermiogramic parameter; Age DOI: 10.3329/jbau.v7i2.4738 J. Bangladesh Agril. Univ. 7(2): 301-304, 2009

scholarly journals Raw Semen Characteristics of Three Different Indonesian Local Roosters

2016 ◽  
Vol 18 (3) ◽  
pp. 165
Author(s):  
Emilia Kamung Hambu ◽  
Raden Iis Arifiantini ◽  
Bambang Purwantara ◽  
Sri Darwati
Keyword(s):  
Sperm Motility ◽  
Semen Quality ◽  
Mass Movement ◽  
Sperm Concentration ◽  
Semen Volume ◽  
Sperm Abnormality ◽  
Microscopic Evaluation ◽  
Semen Characteristics ◽  
Live Sperm ◽  
Better Than

Indonesia has agreat variety of roosters, either indigenous type as well as exotic and cross breed. The purpose of this experiment was to study the characteristics of semen from three types of Indonesian local roosters such as Merawang, Kampung and crosses Sentul Kampung with Kedu (SK Kedu). A total of 15 roosters consist of  Merawang roosters,  Kampung, and SK Kedu roosters were 5 each. The semen was collected 3 times a week by dorso-abdominal and cloaca massage method. The parameters evaluation was macroscopic characteristics consist of volume, color, consistency, and pH. Microscopic evaluation of semen such as a mass movement, sperm motility, live sperm, sperm abnormality and sperm concentration. Results of this experiment showed that semen volume of  Merawang  (0.40±0.26 mL) was higher (p<0.05) compare to Kampung (0.24±0.12 mL) or  SK Kedu (0.16±0.10 mL) but no difference on semen color, consistency and semen pH. There were no difference in the mass movement, sperm motility and live sperm as well as on sperm abnormality among three types of roosters.  Sperm  concentration of Merawang (4490 million mL-1) was significantly higher than Kampung (3245 million mL-1) and the SK Kedu roosters (3751 million mL-1). Its was conclude that Merawang roosters had good semen quality better than Kampung and SK Kedu roosters

scholarly journals INCLUSION OF PROPOLIS IN RABBIT DIETS AND SEMEN CHARACTERISTICS

2015 ◽  
Vol 17 (4) ◽  
Author(s):  
Gentil Vanini de Moraes ◽  
Marcela Mataveli ◽  
Lucimar Pontara Peres de Moura ◽  
Cláudio Scapinello ◽  
Freddy Mora ◽  
...  
Keyword(s):  
Linear Models ◽  
Semen Quality ◽  
White Male ◽  
The Other ◽  
Small Reduction ◽  
Semen Volume ◽  
Semen Characteristics ◽  
Negative Effect ◽  
Different Levels ◽  
Artificial Vagina

This experiment was carried out with the objective of evaluating different levels of powder propolis in rabbit diets and their effect on semen characteristics. A total of 36 New Zealand White male rabbits were used, randomly distributed into six groups, corresponding to six propolis levels (0, 0.25, 0.50, 0.75, 1.0 and 1.25 g propolis/kg of ration). Semen was collected twice a week, using an artificial vagina. Semen volume, progressive spermatic motility, spermatic vigor, spermatic concentration and spermatic morphology were analyzed. General linear models were used for statistical analysis. The inclusion of powder propolis in the diet increased normal spermatozoa percentage and reduced spermatozoa abnormalities. The powder propolis did not affect the progressive spermatic motility, spermatic vigor or spermatic concentration. The values were considered normal for rabbits. However, a small reduction in semen volume was observed, without any negative effect on the other semen characteristics evaluated. Thus, it is possible to observe better semen quality with the inclusion of 1.25 g powder propolis/kg in the diet for reproducer rabbits.

Fertility aspects in yearling beef bulls grazing endophyte-infected tall fescue pastures

2005 ◽  
Vol 17 (4) ◽  
pp. 479 ◽  
Author(s):  
G. M. Schuenemann ◽  
J. L. Edwards ◽  
F. M. Hopkins ◽  
N. R. Rohrbach ◽  
H. S. Adair ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Tall Fescue ◽  
Sperm Morphology ◽  
Semen Quality ◽  
Developmental Competence ◽  
Scrotal Circumference ◽  
Normal Sperm ◽  
Endocrine Profiles ◽  
Beef Bulls

During a 2-year study, yearling beef bulls were used to determine the effects of grazing on endophyte-infected tall fescue on endocrine profiles, semen quality and fertilisation potential. Bulls were allotted to graze tall fescue pastures infected with Neotyphodium coenophialum (E+; n = 20 per year) or Jesup/MaxQTM (Pennington Seed, Atlanta, GA, USA; NTE; n = 10 per year). Bulls were grouped by scrotal circumference (SC), bodyweight (BW), breed composites and age to graze tall fescue pastures from mid-November until the end of June (within each year). Blood samples, BW, SC and rectal temperatures (RT) were collected every 14 days. Semen was collected from bulls every 60 days by electroejaculation and evaluated for motility and morphology. The developmental competence of oocytes fertilised in vitro with semen from respective treatments was determined. Bulls grazing E+ pastures had decreased BW gain (P < 0.01), increased overall RT (P < 0.01) and decreased prolactin (P < 0.01) compared with animals grazing NTE pastures. Neither percentage of normal sperm morphology nor motility differed between bulls grazed on the two pasture types. Semen from E+ bulls demonstrated decreased cleavage rates (P = 0.02) compared with semen from NTE bulls. However, development of cleaved embryos to the eight-cell and blastocyst stages did not differ between the two groups. In conclusion, semen from bulls grazing E+ tall fescue resulted in decreased cleavage rates in vitro, which may lower reproductive performance owing to reduced fertilisation ability.

116. EFFECTS OF SUPPLEMENTAL VITAMIN ON THE SEMEN CHARACTERISTICS OF MARKHOZ GOATS DURING NON-BREEDING SEASON

2009 ◽  
Vol 21 (9) ◽  
pp. 35
Author(s):  
A. Towhidi ◽  
A. Farshad ◽  
M. Dolatpanah ◽  
R. Salehi
Keyword(s):  
Vitamin E ◽  
Breeding Season ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Progressive Motility ◽  
Semen Volume ◽  
Semen Characteristics ◽  
Supplemental Vitamin ◽  
Diet Control ◽  
Live Sperm

The aim of the study was to investigate the effect of dietary supplementation of vitamin E on the semen characteristics of the Markhoz goats. Eighth bucks were randomly allocated into two groups, and received two different diets: unsupplemented diet (control) and supplemented diet with vitamin E (0.30 g/Kg DM). All experimental diets were formulated according to AFRC 1998. Semen was collected at 14-days intervals from June 17, 2006 to September 2, 2006 (non-breeding season) using artificial vagina. Semen characteristics were evaluated including semen volume, sperm concentration, live sperm percentage, percentage of motility and progressive motility. This characteristics were evaluated at two weeks intervals the trial. The total number of spermatozoa per ejaculation was calculated by multiplication of the semen volume with sperm concentration. Sperm motility was also analyzed by placing a sample on pre-warmed (37 º C) microscope slide covered with a cover slip, and examined under a high power microscope at a magnification × 200. Data was analyzed using proc MIXED in SAS program. Significant effect (P≤0.05) of the week (sampling time) was observed for all the parameters except for semen volume. Vitamin E supplementation significantly improved (P≤0.05) total number (Control: 263.7 ×107±17.506 vs. Vit E: 320.95 ×107±17.506) and sperm concentration (Control: 301.79 ×107±13.657 vs. Vit E: 386.57 ×107± 13.657), motility (Control: 77.27% ±0.89 vs. Vit E: 82.6% ±0.89) and progressive motility (Control: 4.208 ±0.138 vs. Vit E: 4.229 ±0.138), percentage of viability (Control: 80.57% ±0.89 vs. Vit E: 85.9% ±0.89). The results suggested that the supplemental Vitamin E may improve the semen quality and fertility in the Markhoz goats.

scholarly journals Relationship between scrotal circumference and semen parameters in crossbred bulls

1970 ◽  
Vol 26 (2) ◽  
pp. 61-67 ◽  
Author(s):  
MA Latif ◽  
JU Ahmed ◽  
MMU Bhuiyan ◽  
M Shamsuddin
Keyword(s):  
Sperm Motility ◽  
Sperm Concentration ◽  
Semen Parameters ◽  
Sperm Production ◽  
Positive Correlation ◽  
Scrotal Circumference ◽  
Semen Volume ◽  
The Relationship ◽  
Fresh Semen

The relationship between the scrotal circumference and semen volume, sperm concentration and number of sperm per ejaculate of 12 crossbred bulls [4 Local × Friesian, 4 Local × Sahiwal] was studied. Semen of three consecutive collections at seven day intervals was evaluated. The age of bulls at first collection varied between 15 and 20 months. Soon after collection, volume, sperm concentration, number of spermatozoa per ejaculate and initial sperm motility of fresh semen were measured. Scrotal circumference was correlated with semen volume, sperm concentration and number of spermatozoa per ejaculate in both groups. A significant (P<0.04) positive correlation (r = 0.72) was observed between scrotal circumference and volume of semen, and between scrotal circumference and number of sperm production per ejaculate. Significant (P<0.05) variation was observed in different semen parameters between bulls within the same group, but no significant (P>0.05) variation was found between the two groups. It is suggested that crossbred bulls aged 18 months or over, with scrotal circumference more than 30 cm, yielded good quality semen. DOI: 10.3329/bvet.v26i2.4952 Bangl. vet. 2009. Vol. 26, No. 2, 61-67

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