scholarly journals Variation in body measurements and semen quality of Nigeria sheep breeds

2021 ◽  
Vol 48 (1) ◽  
pp. 55-61
Author(s):  
F. P. Agbaye ◽  
A. O. Sokunbi ◽  
M. A. Onigemo ◽  
O. Alaba ◽  
O. A. J. Anjola ◽  
...  
Keyword(s):  
Semen Quality ◽  
Sperm Concentration ◽  
Small Ruminants ◽  
Body Measurements ◽  
Morphometric Traits ◽  
Sheep Breeds ◽  
Scrotal Circumference ◽  
Body Weights ◽  
Qualité Du Sperme

small holder farmers enjoy in rearing small ruminants however, there are paucity of information on the morphometric traits and semen characteristics of Nigeria breeds of sheep in Ikorodu. Therefore, the effects of breeds on body measurements and semen quality of four sheep breeds in Nigeria were assessed. Twenty matured rams aged 2½ years and weighed 31.13±4.8 kg comprising five rams per breed namely: Balami (BAL), Ouda (UD), Yankasa (YAK) and West African Dwarf (WAD) were used for the study. Body measurements and semen quality of each ram was assessed for a period of six weeks after the four weeks of acclimatization. Live body weights (LBW), scrotal circumference (SC), height at wither (HtW), rump length (RpL) and rectal temperature (RT) were evaluated for body parameters. Semen samples were collected using electro-ejaculation method and evaluated for semen volume (SV), progressive sperm motility (PSM), sperm concentration (SC), normal sperm morphology (NSM), sperm livability (SL), and sperm acrosome integrity (SAI) using standard procedures. Results revealed that Yankasa had significantly (p<0.05) the higher live body weights (38.33kg) Live body weights while WAD recorded the least live body weights (28.50kg) live body weights which, was similar (p>0.05) with values recorded for Balami (28.67kg) and Ouda(29.0kg) breeds. Scrotal circumference was significantly (p<0.05) the lowest (24.50cm) in WAD but were similar (p>0.05) in Ouda (28.00cm), BAL (27.67cm) and YAK (26.33cm). The HtW showed similar trend with scrotal circumference. Meanwhile, there were no significant variation (p>0.05) in the value recorded for RpL (cm) and RT (0C). While, PSM, SAI and SV for all the breeds of sheep were statistically similar (p>0.05) in values and SC, SL and SNM were statistically different (p<0.05) between breeds.     La petite taille corporelle, la capacité de production élevée et les taux de croissance rapides des moutons sont des caractéristiques remarquables que les petits exploitants agricoles apprécient dans l'élevage de petits ruminants, cependant, il y a peu d'informations sur les traits morphométriques et les caractéristiques du sperme des races de moutons du Nigeria à Ikorodu. Par conséquent, les effets des races sur les mésures corporelles et la qualité du sperme de quatre races de moutons au Nigéria ont été évalués. Vingt béliers matures âgés de 2 ans et demi et pesant 31,13 ± 4,8 kg comprenant cinq béliers par race à savoir: Balami (BAL), Ouda (UD), Yankasa (YAK) et mouton nain de l'Afrique de l'Ouest (WAD) ont été utilisés pour l'étude. Les mesures corporelles et la qualité du sperme de chaque bélier ont été évaluées pendant une période de six semaines après les quatre semaines d'acclimatation. Les poids corporels vivants (LBW), la circonférence scrotale (SC), la hauteur au garrot (HtW), la longueur de la croupe (RpL) et la température rectale (RT) ont été évaluées pour les paramètres corporels. Des échantillons de sperme ont été collectés à l'aide de la méthode d'électro-éjaculation et évalués pour le volume de sperme (SV), la motilité progressive des spermatozoïdes (PSM), la concentration de spermatozoïdes (SC), la morphologie normale des spermatozoïdes (NSM), l'habitabilité des spermatozoïdes (SL) et l'intégrité des acrosomes du sperme (SAI) en utilisant des procédures standard. Les résultats ont révélé que Yankasa avait significativement (p <0,05) les poids corporels vivants les plus élevés (38,33 kg), tandis que WAD a enregistré les poids corporels vivants les moins élevés (28,50 kg) qui étaient similaires (p> 0,05) avec des valeurs enregistrées pour les races Balami (28,67 kg) et Ouda (29,0 kg). La circonférence scrotale était significativement (p <0,05) la plus basse (24,50 cm) dans le mouton nain de l'Afrique de l'Ouest mais était similaire (p> 0,05) chez Ouda (28,00 cm), BAL (27,67 cm) et YAK (26,33 cm). La hauteur au garrot (HtW) a montré une tendance similaire avec la circonférence scrotale. Pendant ce temps, il n'y avait pas de variation significative (p> 0,05) dans la valeur enregistrée pour la longueur de la croupe (RpL) (cm) et la température rectale (RT) (0C). Alors que PSM, SAI et SV pour toutes les races de moutons étaient statistiquement similaires (p> 0,05) en valeurs et SC, SL et SNM étaient statistiquement différents (p <0,05) entre les races.

scholarly journals 294EFFECTS OF LONG DAYLIGHT ON CAPRINE SCROTAL CIRCUMFERENCE AND SEMEN QUALITY

2004 ◽  
Vol 16 (2) ◽  
pp. 267
Author(s):  
A. Mahmoud ◽  
B. Kouakou ◽  
E. Amoah ◽  
S. Gelaye
Keyword(s):  
Repeated Measures ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Small Ruminants ◽  
Reproductive Activity ◽  
Least Square ◽  
Semen Parameters ◽  
Nonbreeding Season ◽  
Scrotal Circumference ◽  
Significant Difference

Seasonal variation of the reproductive activity of small ruminants in the southern USA is controlled by photoperiod. We tested the hypothesis that artificial manipulation of photoperiod has an effect on caprine testicular activity and semen quality. The objective of this study was thus to determine the effects of photoperiod on caprine scrotal circumference and semen parameters during the nonbreeding season. Ten Saanen and Alpine bucks, two to three years old, raised at the Small Ruminant Research and Extension Center of Fort Valley State University (latitude 32°37′ N, longitude 83°39′ W), were used in the study. Throughout the study, the bucks were fed a concentrate diet containing 16% crude protein, and 2.7 Mcal/Kg of digestible energy. Two groups of bucks randomly selected were exposed to long daylight (16L:8D; n=5) or ambient daylight (12L:12D, control;; n=5) for a period of three weeks during the month of March. Scrotal circumference measurements and semen collection were conducted on each buck twice a week for a total of five trials. Semen samples were collected using an artificial vagina and an electroejaculator. Samples were immediately transferred to the laboratory for further evaluation. Data were analyzed as a completely randomized design with repeated measures using SAS program (SAS, 1990). When means were significant by ANOVA (P&lt;0.05), they were separated by least significant difference. Results are presented as the least square means±SEM. Long daylight did not affect semen volume (mL), % motility, sperm concentration (billions/mL), % viability, or % abnormality(P&gt;0.05). However, semen motility, sperm concentration, and abnormality were influenced by treatment in trials 3, 1, and 5, respectively (P&lt;0.05). The least square means±SEM values for these parameters were 35±15, 0.58±0.1, and 20.0±3.7 for long daylight-treated bucks v. 87±15, 0.13±0.1, and 7.8±3.7 for the control, respectively. Further, long daylight affected scrotal circumference (P&lt;0.05). Scrotal circumferences were decreased in trials 1, 2, and 5 (P&lt;0.05). Long daylight decreased scrotal circumference without affecting semen quality in this study.

23 Sperm quality of Pure Spanish stallions is affected by inbreeding coefficient and age

2020 ◽  
Vol 32 (2) ◽  
pp. 137
Author(s):  
Y. Pirosanto ◽  
M. Valera ◽  
A. Molina ◽  
J. Dorado ◽  
S. Demyda-Peyrás
Keyword(s):  
Sperm Motility ◽  
Inbreeding Depression ◽  
Negative Correlation ◽  
Semen Quality ◽  
Sperm Quality ◽  
Sperm Concentration ◽  
Inbreeding Coefficient ◽  
Semen Parameters ◽  
Computer Assisted

Inbreeding depression, a genetic condition produced by the mating of close-related individuals, has been associated with a reduction of fertility in several species. However, a loss in sperm quality was also associated with age. In horses, the few existing reports have described a tendency of both parameters to produce a negative effect on sperm quality. However, those reports were performed using a subjective evaluation of sperm motility. In the present study, a total of 692 ejaculates from 86 Pure Spanish stallions (PRE), aged between 3 and 22 years, were evaluated using a computer-assisted methodology to determine the effect of inbreeding in four semen parameters: free-gel volume (V), sperm concentration (C, by haemocytometer), and total (TM) and progressive (PM) sperm motility (by Spermvision sperm class analyser; Minitube). The inbreeding coefficient (F) was estimated using 300 000 PRE pedigree records approximately (minimum pedigree depth, eight equivalent complete generations; range, between 1 and 30.1%). Stallion, age, ejaculate, and season of semen collection were the variables included in the statistical model (general linear model), with ejaculate and season being the variables with a major effect (by variance components analysis). Our results showed that sperm concentration (r=−0.18; P&lt;0.0001) and volume (to a lesser extent) were reduced with advancing age, both showing a major decline after 15 years of age. To the contrary, sperm motility was not affected by age of the stallion. We also found a negative correlation between the inbreeding coefficient and ejaculate volume (r=−0.14; P&lt;0.001), with a marked decrease seen when F was between 7 and 20%. Also, a negative correlation was observed in PM (r=−0.08; P&lt;0.05), although to a lower extent. Conversely, C and TM were not affected by inbreeding depression (P&gt;0.05). In conclusion, our results demonstrated that high levels of inbreeding can compromise severely the sperm quality of the PRE stallion, which, subsequently, may have a negative influence on fertility. Ongoing studies using genomic data will help to detect genetic variants associated with stallion semen quality and how it is influenced by inbreeding in specific genomic regions.

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 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 Semen quality of three breeds of exotic boar extended using methaloninated Moringa leaf extract as antibiotics in beltsville thawing solution

2021 ◽  
Vol 48 (1) ◽  
pp. 47-54
Author(s):  
I. A. Omodewu ◽  
T. Olorungbohunmi ◽  
B. A. Boladuro ◽  
J. O. Abiona ◽  
C. P. Njoku
Keyword(s):  
Leaf Extract ◽  
Storage Time ◽  
Moringa Oleifera ◽  
Semen Quality ◽  
Antibacterial Properties ◽  
Semen Parameters ◽  
Large White ◽  
Normal Limits ◽  
Qualité Du Sperme

Moringa oleifera leaf extract (MLE) contains antibacterial properties; this study evaluated the effect of including MLE, breed and storage time on semen quality of boars extended with Beltsville thawing solution (BTS). Semen samples were collected weekly from twelve boars (Four Duroc, four Large White and four Landrace). Samples were extended with 0, 0.25, 0.50, 0.75 and 1.00g MLE inclusions. Parameters; volume and concentration were taken immediately after collection while pH, mass activity (%MA), progressive motility (%PM), liveability (%LA) and abnormality (%ABN) were taken at 0, 24, 48 and 72 hours. Data obtained were subjected to analysis of variance. All parameters considered except %ABN were significant (p<0.05). MA ranged between 3.31 (1.00gMLE) and 4.00 (0gMLE). Highest PM was 60.93% in 0.25gMLE, pH differed with 6.98 (0gMLE) and 6.90 (1.00gMLE), 0gMLE (89.64%) had higher LA compared to 0.25gMLE (86.40%), ABN ranged between3.94 to 4.60%. As storage time increased viability of all semen parameters reduced, between 48 and 72 hours parameters reduced below normal limits. Breed effect differed (p<0.05) for MA, Volume and Conc., Duroc (3.78) had higher MA compared to Large White (3.64) and Landrace (3.60). Semen volume (p<0.05) for Landrace (255.20g) was highest while Duroc (170.80g) was lowest. Large white concentration (201.8million spermatozoa/ml) was higher (p<0.05) than Landrace (187.4 million spermatozoa/ml) and Duroc (123.8million spermatozoa/ml). %LA ranged between 88.06% and 88.72% for Duroc and landrace respectively while %ABN was between 3.97-4.41% for Large White and Landrace. This study concluded that 0.75-1.00gMLE could replace synthetic antibiotic in BTS for 24 hours.     L'extrait de feuille de Moringa oleifera (le 'MLE') contient des propriétés antibactériennes ; Cette étude a évalué l'effet de l'inclusion de 'MLE', de la race et du temps de stockage sur la qualité du sperme de verrats exotiques additionnés de solution de décongélation de Beltsville (le 'BTS'). Des échantillons de sperme ont été prises chaque semaine de douze verrats (quatre Duroc, quatre Large White et quatre Landrace). Les échantillons ont été étendus avec des inclusions de 0, 0,25, 0,50, 0,75 et 1,00 g de 'MLE'. Paramètres ; le volume et la concentration ont été prélevés immédiatement après le prélèvement tandis que le pH, l'activité massique (% 'MA'), la motilité progressive (% 'PM'), l'habitabilité (% LA) et l'anomalie (% ABN) ont été pris à 0, 24, 48 et 72 heures. Les données obtenues ont été soumises à une analyse de variance. Tous les paramètres considérés à l'exception du% ABN étaient significatifs (p <0,05). Le MA variait entre 3,31 (1,00 g MLE) et 4,00 (0 gMLE). La'PM la plus élevée était de 60,93% dans 0,25 gMLE, le pH différait de 6,98 (0 gMLE) et 6,90 (1,00 gMLE), 0 gMLE (89,64%) avait un LA plus élevé par rapport à 0,25 gMLE (86,40%), l''ABN' variait entre 3,94 et 4,60%. À mesure que la durée de stockage augmentait la viabilité de tous les paramètres du sperme, entre 48 et 72 heures, les paramètres étaient réduits en dessous des limites normales. L'effet de la race était différent (p <0,05) pour la MA, le volume et la concentration. Duroc (3,78) avait une MA plus élevée que le Large White (3,64) et le Landrace (3,60). Le volume de sperme (p <0,05) pour Landrace (255,20 g) était le plus élevé, tandis que Duroc (170,80 g) était le plus faible. La grande concentration de blanc (201,8 millions de spermatozoïdes / ml) était plus élevée (p <0,05) que Landrace (187,4 millions de spermatozoïdes / ml) et Duroc (123,8 millions de spermatozoïdes / ml). % LA variait entre 88,06% et 88,72% pour Duroc et landrace respectivement tandis que% ABN était entre 3,97-4,41% pour Large White et Landrace. Cette étude a conclu que 0,75-1,00 gMLE pouvait remplacer l'antibiotique synthétique dans le BTS pendant 24 heures.

scholarly journals Effect of genotype on semen quality traits of main and reciprocal crossbred chickens

2020 ◽  
Vol 46 (2) ◽  
pp. 32-39
Author(s):  
U. C. Isaac ◽  
U. H. Udoh ◽  
R. J. Nosike
Keyword(s):  
Reciprocal Cross ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Genetic Constitution ◽  
Quality Traits ◽  
Breeding Method ◽  
Naked Neck ◽  
Significant Difference ◽  
Live Sperm

Semen quality of cocks is of utmost importance in reproduction. Breeding method, breed, strain and genetic constitution are the major components of the genetic factors capable of affecting the semen quality of cocks. This research seeks to determine the effect of genotype on the semen quality traits of 272 F crossbred cocks produced at day-old by main and 1 reciprocal crossbreeding of 69 Isa Brown and local frizzle feathered, naked neck and normal feathered chickens. The genotypes of the cocks were Isa Brow x frizzle feathered main cross (IBxF), Isa Brown x naked neck main cross (IBxNa), Isa Brown x normal feathered main cross (IBxN), frizzle feathered x Isa Brown reciprocal cross (FxIB), naked neck x Isa Brown reciprocal cross (NaxIB) and normal feathered x Isa Brown reciprocal cross (NxIB). At 36-40 weeks of age, semen was extracted from the cocks by abdominal  massage technique and used to evaluate semen volume (SV), sperm motility (SM), sperm concentration (SC) and live sperm (LS) at weekly intervals. Data obtained from the evaluation were subjected to analysisof variance and tested at 5% level of probability. Genotypes differed significantly (P <0.05) in SC at 37-40 weeks and in SM and LS at all ages. There was no significant difference (P>0.05) in SV. Regardless of genotype and age, the mean SV, SM, SC and LS ranged from 0.31±0.02 to 0.24±0.01ml, 71.84±1.33 to 58.75±2.16 %, 3.22±0.02 to2.92±0.02 x109/ml and 71.91±1.37 %, respectively. The NxIB and IBxNa genotypes produced largest numericalsemen volume at 37 and 39 weeks of age respectively. Whereas SC and LS were significantly highest for IBxF and IBxN respectively at week 37, SM was so for IBxN at all ages. Further, the LS of IBxN genotype was significantly highest at 36-38 and 40 weeks of age. The exotic Isa Brown and normal feathered main cross cocks exhibited the best semen quality traits among all genotypes studied and should be selected for improvement of the reproductive characteristics of cocks.  

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

ASSESSMENT OF BOVINE SEMEN QUALITY BY RESAZURIN REDUCTION TEST

2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Umesh Kumar ◽  
Prasanna Pati ◽  
A.P. Gawande
Keyword(s):  
Sperm Motility ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Mean Value ◽  
Bovine Semen ◽  
Reduction Test ◽  
The Mean ◽  
Acrosomal Integrity

A study was conducted to assess the semen quality using Resazurin Reduction Test (RRT) in Jersey and Jersey cross bulls. A total 36 fresh ejaculates were collected for evaluation RRT, sperm motility, acrosomal integrity and sperm concentration. The mean value of RRT in bulls was 15.77±0.85 minutes.Statistical analysis revealed that RRT was highly significantly (p<0.01) and positively correlated with sperm concentration (r=0.769), sperm motility(r=0.858) and acrosomal integrity (r=0.515), hence it may be helpful in evaluating the quality of semen in bulls.

The effects of undernutrition on libido and semen quality in adult Merino rams

1972 ◽  
Vol 23 (1) ◽  
pp. 109 ◽  
Author(s):  
GV Parker ◽  
CJ Thwaites
Keyword(s):  
Methylene Blue ◽  
Reaction Time ◽  
Semen Quality ◽  
Experimental Period ◽  
Volume Density ◽  
Reduction Time ◽  
Body Weights ◽  
Methylene Blue Reduction

Groups of mature Merino rams were fed at maintenance, or at 75 or 50% of maintenance, for a 15-week experimental period, during which the treated groups lost on average 12.5 and 20.6% of their respective initial body weights. Libido and semen quality were assessed at weekly intervals on a series of eight ejaculates collected from each ram at 20-min intervals. Libido, as assessed by reaction time, number of mounts per ejaculate, frequency of failure to ejaculate, and vigour of the ejaculatory thrust, was progressively and markedly depressed in both treated groups during the last third of the experiment. Semen quality (volume, density, and motility of ejaculate, and methylene blue reduction time) was significantly greater in the first than in the eighth ejaculate collected each week, and the quality of the first but not the eighth ejaculate was significantly depressed during the last month of the experiment in both treated groups.

scholarly journals Hubungan Lingkar Skrotum dengan Kualitas Semen Sapi Kuantan Riau

2019 ◽  
Vol 3 (1) ◽  
pp. 19-24
Author(s):  
Jiyanto Jiyanto ◽  
Pajri Anwar
Keyword(s):  
Regression Analysis ◽  
Semen Quality ◽  
Regression Equation ◽  
Moderate Correlation ◽  
Spermatozoa Motility ◽  
Scrotal Circumference ◽  
Low Correlation ◽  
The Relationship

The aim of this study was to determine the correlation between scrotal circumference and semen quality of the Riau Kuantan cattle. The study was conducted in Benai District, Kuantan Singingi Regency. The material used was 15 Kuantan bulls. The parameters observed were scrotal circumference, semen quality and the correlation between scrotal circumference and semen quality. The results of this study indicated that the size of Kuantan cattle scrotum circumference was 23.06 cm; viability 76.67%; and motility 58%. The results of regression analysis which conducted on scrotal circumference for the viability and motility showed not significant (P0.05). The correlation between scrotal circumference with spermatozoa viability of Kuantan cattle showed a moderate correlation of 0.40. The relationship between scrotal circumference with spermatozoa motility in Kuantan cattle showed a low correlation of 0.22. The regression equation obtained to determine the relationship between scrotal circumference with viability and motility of spermatozoa were Y = 45.44 + 1.35X and Y = 44.77 + 0.57X, respectively. The results of this study indicated that scrotal circumference cannot be made as determinant of spermatozoa quality of in Riau Kuantan bulls.

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