TESTICULAR DEVELOPMENT OF SALERS BULLS TO ONE YEAR OF AGE

1988 ◽  
Vol 68 (3) ◽  
pp. 961-964 ◽  
Author(s):  
G. H. COULTER ◽  
D. R. C. BAILEY
Keyword(s):  
Body Weight ◽  
Statistical Model ◽  
Growth Performance ◽  
Key Words ◽  
Performance Test ◽  
Testicular Development ◽  
Scrotal Circumference ◽  
One Year

Scrotal circumference measurements were taken on 255 Salers bulls located at five growth performance test stations at the 56-d (26.9 ± 0.2 cm), 84-d (28.8 ± 0.2 cm) and 140-d weighings (30.8 ± 0.2 cm) in 1986, and on 248 Salers bulls located at four test stations at the 140-d weighing (31.3 ± 0.1 cm) in 1987. The estimated scrotal circumference measurement for Salers bulls at 365 d of age was 29.4 cm. Test station, percentage of Salers breeding within test station, sire of bull within year and test station, and the covariate body weight all contributed to the variance in scrotal circumference measurements. Incorporation of sire of bull within year and test station into the statistical model accounted for a much higher proportion of the variance in scrotal circumference measurements (r2 = 65%) than when percentage of Salers breeding within test station was substituted (r2 = 32%). Key words: Testicular development, scrotal circumference, Salers bulls, recommendations

HERITABILITY OF SCROTAL CIRCUMFERENCE IN ONE- AND TWO-YEAR-OLD BULLS OF DIFFERENT BEEF BREEDS

1987 ◽  
Vol 67 (3) ◽  
pp. 645-651 ◽  
Author(s):  
G. H. COULTER ◽  
G. C. KOZUB ◽  
D. R. C. BAILEY ◽  
R. J. MAPLETOFT ◽  
W. F. CATES
Keyword(s):  
Statistical Model ◽  
Key Words ◽  
Fixed Effects ◽  
Performance Test ◽  
Age Groups ◽  
Scrotal Circumference ◽  
Sources Of Variation ◽  
Testicular Size ◽  
Heritability Estimates ◽  
Beef Bulls

Over an 8-yr interval, (1975–1982) scrotal circumference (SC) was measured on 4557 1-yr-old beef bulls from 1796 sires and eight breeds. Measurements were taken upon completion of a 140-d growth performance test. During the period 1977–1983, SC was measured on 7835 2-yr-old beef bulls from 2570 sires and six breeds. Two-year-old bulls were measured during reproductive examinations at spring bull sales. All SC measurements were adjusted for fixed effects of location-year and age, and heritability estimates were calculated within-breed using a paternal half-sib analysis. Heritability estimates for the SC trait in Angus, Charolais, horned Hereford, polled Hereford, Shorthorn, Simmental, Limousin and Maine-Anjou breeds in 1-yr-old bulls were 0.22 ± 0.20, 0.46 ± 0.14, 0.89 ± 0.17, 0.83 ± 0.26, 1.01 ± 0.31, 0.63 ± 0.19, 0.94 ± 0.29 and 0.59 ± 0.22. Heritability estimates for SC in 2-yr-old bulls of the first six breeds were 0.00 ± 0.21, 0.60 ± 0.25, 0.57 ± 0.07, 0.65 ± 0.10, 0.69 ± 0.34 and 0.20 ± 0.24. Owing to the small number of sires or sons within sires for some breed-age groups and the exclusion of some sources of variation in the statistical model, the estimates of heritability may not be precise and should be used to indicate approximate levels of heritability for a particular breed. Key words: Heritability, testicular size, scrotal circumference, beef bulls

SCROTAL CIRCUMFERENCE OF YOUNG BEEF BULLS: RELATIONSHIP TO PAIRED TESTES WEIGHT, EFFECT OF BREED, AND PREDICTABILITY

1982 ◽  
Vol 62 (1) ◽  
pp. 133-139 ◽  
Author(s):  
G. H. COULTER ◽  
D. G. KELLER
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Performance Test ◽  
Correlation Coefficients ◽  
Testis Weight ◽  
Testis Size ◽  
Performance Tests ◽  
Scrotal Circumference ◽  
Weight Effect ◽  
Beef Bulls

The relationship between paired testes weight (PTW) and scrotal circumference (SC) was examined in 335, 1- and 2-yr-old Hereford and Angus bulls. Measurements were taken within 15 days of each other. The equation best describing these data is Y = − 722.28 + 36.53X (r = 0.95; SE = ± 57.6), where Y is PTW (including epididymides) in grams and X is SC in centimeters. Comparable equations having age in days or body weight in kilograms as the independent variable are Y = 70.46 + 0.76X (r = 0.80; SE = ± 108.2), and Y = 74.37 + 1.00X (r = 0.80; SE = ± 107.6), respectively. Differences in SC due to breed were examined in 3063, 1-yr-old beef bulls of nine breeds completing 140-day growth-performance tests. Data were adjusted for location-year and body weight for all breeds except Herefords, where age was also included. The average SC ± SE by breed were Simmental 37.7 ± 0.2 cm, Aberdeen Angus 35.6 ± 0.1 cm, Maine-Anjou 35.4 ± 0.2 cm, Charolais 34.7 ± 0.1 cm, horned Hereford 34.6 ± 0.1 cm, Shorthorn 34.2 ± 0.2 cm, polled Hereford 34.0 ± 0.2 cm, Blonde d'Aquitaine 32.4 ± 0.5 cm, and Limousin 32.1 ± 0.3 cm. Predictability of SC measurements at the end of growth performance tests from those taken at various times during the test varied from 0.44–0.68 at or near the beginning of the test period to 0.88–0.94 at 1 mo before the end. Although all correlations were highly significant (P < 0.01), only measurements taken within 1 mo of completing the growth-performance test were sufficiently predictable for culling 1-yr-old bulls. Correlation coefficients calculated between SC in 1-yr-old bulls and SC and PTW when they were 2 yr old were 0.76 and 0.65 (P < 0.01). These values suggest that SC in young beef bulls is a useful predictor of PTW. Also, this study showed that testis size of 1-yr-old bulls differed among breeds and that SC of 1-yr-old bulls can be used as an aid to select herd sires likely to have above-average testicular size, thereby increasing the probability of impregnating more females when under heavy breeding pressure. Key words; beef bulls, testis weight, predictability, breed

RELATIONSHIPS OF SCROTAL CIRCUMFERENCE WITH BODY WEIGHT AND BACKFAT THICKNESS IN MULTIBREED SYNTHETIC POPULATIONS OF YOUNG BEEF BULLS

1982 ◽  
Vol 62 (4) ◽  
pp. 1049-1055 ◽  
Author(s):  
A. K. SHARMA ◽  
R. T. BERG
Keyword(s):  
Body Weight ◽  
Performance Test ◽  
Correlation Coefficients ◽  
Backfat Thickness ◽  
Simple Correlation ◽  
Scrotal Circumference ◽  
Synthetic Populations ◽  
Breed Group ◽  
Partial Correlations ◽  
Beef Bulls

Relationships of scrotal circumference (SC) with body weight (BW) and backfat thickness (FT) as measured from scanograms were studied. A total of 935 observations on growing multibreed synthetic beef bulls on a postweaning performance test were available from a commercial herd for this study. Significant breed group, period and group × period interaction effects were noted on SC, BW and FT. BW and SC increased significantly during the test in all breed groups, while FT showed no change in three breed groups. Repeatability pooled across groups for SC was estimated as 0.72; 0.66 after adjusting for BW. Significant correlations were noticed between SC and BW within each breed group. Partial correlations between SC and BW at constant FT were not different from gross correlations. Linear regression coefficients of SC on BW were significant in all groups and showed heterogeneity among groups but not between periods within groups. Adjustments of SC for BW should, therefore, be breed group specific. BW alone accounted for considerable variation in SC, from 38 to 76%. Simple correlation coefficients between SC and FT were low and significant in only two groups. A significant but low positive relationship was noted between SC and FT at constant BW in a group fed a high-concentrate diet during the postweaning gain period, but there was no relationship in four other groups. Results indicated that the method of adjusting SC for FT as an indirect way of adjusting for scrotal fat was not satisfactory. Key words: Bulls, scrotal circumference, growth

scholarly journals Evaluación del desarrollo testicular y medidas morfométricas en ovinos de pelo colombiano

2018 ◽  
Vol 29 (1) ◽  
pp. 165
Author(s):  
Amado Espitia-Pacheco ◽  
Donicer Eduardo Montes Vergara ◽  
Diego Lara-Fuenmayor
Keyword(s):  
Body Weight ◽  
Regression Analysis ◽  
Significant Influence ◽  
Regression Coefficient ◽  
Pearson Correlation ◽  
Morphometric Parameters ◽  
Testicular Development ◽  
Body Measurements ◽  
Scrotal Circumference ◽  
And Function

The sheep body measurements are useful indicators of type and function that allow improving the selection. Biometric studies have shown in sheep a relationship between these measures with some productive variables. The main purpose of this study was to evaluate the testicular development and their relationship with morphometric parameters on Colombian hairy sheep of Sampués, Sucre, Colombia. Weaned males (n=12) born between February and April of 2014 were used, and the following measures were taken every twenty-eight days: scrotal circumference (CS), body weight (PC), rump height (AG), withers height (AC), and right and left testicular length (LTD and LTL).The sheep were between three to twelve months old. A multiple regression analysis (RA) was done from PC; AG; AC; TL. To describe the variation of LT, the model included only the variables PC; AG; AC. The grade of association between the studied variables was performed by a Pearson correlation. Scrotal circumference showed a high correlation with the evaluated morphometric parameters. In the RA analysis, the PC influenced the variable CE (p<0.05), while other variables did not have a significant influence. According to the regression coefficient associated to the measurement, per each kg of PC that an animal gained in weight, there was a corresponding increase of 0,09 cm in the CS.

scholarly journals COMPARISONS OF SOME REPRODUCTIVE PARAMETERS IN RED SOKOTO AND KANO BROWN BREEDS OF BUCKS

2021 ◽  
Vol 25 (1) ◽  
pp. 1-5
Author(s):  
I. S. BUTSWAT ◽  
D. T. ZAHARADDEEN
Keyword(s):  
Body Weight ◽  
Body Condition ◽  
Body Condition Score ◽  
Reproductive Parameters ◽  
Epididymal Sperm ◽  
Scrotal Circumference ◽  
Condition Score ◽  
The Mean ◽  
One Year

Some reproductive parameters of one-year-old 20 of each Red Sokoto and Kano Brown bucks were investigated. For the Red Sokoto and Kano Brown breeds of bucks, the mean (±S.E.) body weight, body condition score, scrotal circumference, testes weight, testes volume, epididymal length, epididymal volume, epididymal weight, testes sperm and epididymal sperm were 13.84± 0.54 vs 11.69 ± 0.35kg, 2.15±0.08 vs 2.10± 0.07, 19.83± 0.36 vs 18.27± 0.49cm, 36.41± 1.89 vs 29.70±1.98g, 35.63± 1.87 vs 29.48± 1.9ml, 10.67±0.20 vs 9.66± 0.25cm, 6.16± 0.23 vs 5.44±0.31ml 6.46± 0.24 vs 5.53± 0.34g, 0.24± 0.02 vs 0.16± 0.01 x 109 and 2.47± 0.16 vs 1.59± 0.16 x 109 respectively, and were significantly different between the breeds. The percentage epididymal segments mass and sperm were also depicted. There were highly significant correlations between many of the reproductive parameters in both breeds. The Red Sokoto bucks seem more adapted than the Kano Brown in terms of their reproductive make-up.

Effect of nutrition on testicular traits of tropically adapted yearling beef bulls

2008 ◽  
Vol 48 (7) ◽  
pp. 950 ◽  
Author(s):  
F. J. C. Swanepoel ◽  
G. J. Taylor ◽  
E. C. Webb ◽  
A. Stroebel
Keyword(s):  
Management Practices ◽  
Performance Test ◽  
Reproductive Potential ◽  
High Energy ◽  
Seminiferous Tubules ◽  
Testicular Development ◽  
Scrotal Circumference ◽  
Fat Deposits ◽  
Linear Movement ◽  
Testicular Histology

The effects of different management practices on testicular development of young Bonsmara bulls fed a high energy (HE), medium energy (ME) and low energy (LE) diet after weaning were determined. Testicular histology and seminal traits were examined together with scrotal circumference (SC) development over an 84-day performance test trial period. The SC differed significantly (P < 0.001) between HE-, ME- and LE-fed bulls. Seminal traits, such as semen concentration were significantly (P < 0.001) lower in bulls fed the HE diet (1.3 ± 0.134) compared with those fed the ME diet (2.4 ± 0.18) and LE diet (2.6 ± 0.16). Similarly, linear movement of sperm was also affected by diet and movement was slower (P < 0.05) in bulls fed the HE diet (1.7 ± 0.30) compared with bulls fed the ME diet (2.2 ± 0.31) and LE diet (3.1 ± 0.23). The percentage total major (P < 0.001) and total minor (P < 0.05) sperm defects were also greater in the HE-fed bulls (27.1 ± 6.82 and 7.4 ± 0.91) compared with the ME-fed bulls (9.7 ± 1.45 and 5.5 ± 0.87) and for the LE-fed bulls (5.4 ± 1.26 and 3.9 ± 0.58). Dietary energy level (P < 0.05) influenced the percentage inactive seminiferous tubuli, with bulls fed the HE diet having 35% more seminiferous tubules classified as inactive compared with those bulls fed ME and LE diets. Scrotal fat deposits were higher (P < 0.05) in bulls fed the HE diet (243.4 ± 21.59 g) compared with those fed the ME (110.0 ± 12.1 g) and LE (88.4 ± 9.65 g) diets. Feeding HE diets to young bulls probably reduces their reproductive potential.

scholarly journals The Excellence of Performance, Semen Quality and Testosterone Levels on Bull in Teaching Farm, Faculty of Veterinary Medicine, Universitas Airlangga

2021 ◽  
Vol 4 (1) ◽  
pp. 131
Author(s):  
Pudji Srianto ◽  
Trilas Sardjito ◽  
Budi Utomo ◽  
Oky Setyo Widodo
Keyword(s):  
Body Weight ◽  
Veterinary Medicine ◽  
Performance Test ◽  
Semen Quality ◽  
Sandwich Elisa ◽  
Testosterone Levels ◽  
Scrotal Circumference ◽  
Frozen Semen ◽  
The Mean ◽  
Age Range

Study on performance, semen quality and testosterone levels of 2 young bulls (age range 3-5 years) Limousine and Simental and 2 old bulls (age range 6-8 years) types Limousin and Simental have been carried out in the Teaching Farm, Faculty of Veterinary Medicine, Universitas Airlangga. This study aimed to determine the performance, semen quality and testosterone levels can be used as a guideline whether or not the ejaculate of young and old bulls should be continued into frozen semen. Performance tests were carried out using measuring sticks and weight bands, semen quality tests included macroscopic and microscopic tests, semen concentration using a spectrophotometer and testosterone test using the Sandwich-ELISA method. The mean results of the performance test in young bulls were, while the mean for older bulls were: body weight 700 kg; hump height 136.5 cm; circumferens of chest 213 cm; body length 171 cm and scrotal circumference 35.5 cm. The performance test for old bulls is body weight 840 kg; hump height 143 cm; circumferens of chest 225.5 cm; body length 177.5 cm and scrotal circumference 40.25 cm. Mean macroscopic of semen examination for young bulls, mean volume 8 cc; milky white color; characteristic odor; The degree of acidity was 6.5 and mucous consistency, while for the old bulls the volume was 6.85; milky white color; characteristic odor; 6.5 degrees of acidity and mucous consistency. The mean microscopic examination for young bulls was mass movement ++ / +++; individual movement 80/3; concentration 745.5 million / ml; abnormalities 3% and 92.25% viability, for old bulls: movement mass ++ / +++; individual movement 77.5 / 3; concentration 1291.5 millon / ml; abnormalities 5% and viability 90%. Examination of serum testosterone levels using the Sandwich-ELISA technique was obtained by an average of 1.299 ± 0.1598 ng/ml in young bulls and 1.101 ± 0.1502 ng/ml in older bulls. This study concluded that young bulls and old bulls in the Teaching Farm, Faculty of Veterinary Medicine, Universitas Airlangga in terms of performance, semen quality and testosterone levels are suitable for processing into high quality frozen semen.

A comparison of production traits and welfare implications between horned and polled beef bulls

1996 ◽  
Vol 76 (1) ◽  
pp. 1-5 ◽  
Author(s):  
J. M. Stookey ◽  
L. A. Goonewardene
Keyword(s):  
Key Words ◽  
Performance Test ◽  
Average Daily Gain ◽  
Production Traits ◽  
Scrotal Circumference ◽  
Welfare Implications ◽  
Beef Bulls ◽  
Selected Traits ◽  
The University ◽  
Daily Gain

Data from two record of performance test stations (ROP) were used to compare selected traits of polled and horned bulls. The University of Saskatchewan (SASK) ROP test station provided data on 578 Charolais (CH) and 375 Hereford (HE) bulls from 1985 to 1992, while the Alberta (ALTA) Hereford ROP station provided data on 1485 HE bulls from 1985 to 1993. Polled and horned CH bulls from SASK showed similar (P > 0.05) on-test average daily gain (ADG), while polled HE bulls from SASK showed significantly higher (P < 0.03) ADG than their horned counterparts (1.41 ± 0.01 and 1.36 ± 0.02, respectively). Polled CH bulls were 11.4% fatter than horned bulls at the end of the test (P < 0.01). No significant differences in ADG, weight per day of age (WPDA) or scrotal circumference (SC) were observed between polled and homed HE bulls in ALTA. These results show no disadvantage for polled bulls compared to horned for ADG, WPDA, adjusted SC and adjusted yearling weight. From a welfare perspective, it may be advantageous to use polled bulls to circumvent the need for dehorning. Key words: Polled horned bulls ADG test station

scholarly journals PERBANDINGAN PERFORMA PERTUMBUHAN PADA SAPI PERANAKAN ONGOLE DI DESA PURWODADI DALAM DAN DESA WAWASAN, KECAMATAN TANJUNGSARI, KABUPATEN LAMPUNG SELATAN

2021 ◽  
Vol 5 (1) ◽  
pp. 57-63
Author(s):  
Ega Kurniawan ◽  
Ali Husni ◽  
Sulastri Sulastri ◽  
Kusuma Adhianto
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Growth Performance ◽  
Body Weight Gain ◽  
Animal Husbandry ◽  
The Body ◽  
Survey Method ◽  
Average Weight ◽  
Weaning Weight ◽  
One Year

This research aimed to compare the growth performance of Ongole Grade (PO) cattle in Purwodadi Dalam and Wawasan villages. This research was conducted from December 2019 to January 2020 at the People's Animal Husbandry Center, Wawasan Village and Purwodadi Dalam Village, Tanjungsari District, South Lampung Regency, Lampung Province. This study used a survey method (purposive sampling), using primary and secondary data. The observed variables were birth weight, weaning weight and yearling weight. The results showed that the average weight gain of PO cattle in the village of Wawasan was 84.33 � 19.18 kg / head, which was higher than that of Purwodadi Dalam, namely 80.17 � 19.49 kg / head. The body weight gain after weaning of PO cattle in Wawasan Village was 39.15 � 21.34 kg, higher than that in Purwodadi Dalam Village, namely 37.75 � 21.10 kg / head. The body weight gain from birth to one year of PO cattle in Wawasan Village was 123.49 � 26.26 kg / head, which was also higher than that in Purwodadi Dalam Village, namely 117.93 � 30.50 kg / head. The results also showed that the corrected weaning weight of PO cattle in Wawasan Village (122.40 � 23.20 kg / head) was higher than that in Purwodadi Dalam Village (121.24 � 22.86 kg / head), and the average body weight of one year old of PO cattle in Wawasan Village was 147.95 � 26.58 kg / head higher than that in Purwodadi Dalam Village with an average weight of 141.98 � 31.37 kg / head. The results of the current study concluded that the growth performance of PO cattle in Wawasan Village was better than those in Purwodadi Dalam Village. Keywords: Growth performance, Ongole Grade (PO) cattle, Weaning weight, Yearling weight

A note on the effect of deep-litter housing on growth performance of growing-finishing pigs

1993 ◽  
Vol 73 (3) ◽  
pp. 643-647 ◽  
Author(s):  
J. J. Matte
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Growth Performance ◽  
Key Words ◽  
Treatment Effect ◽  
Opposite Effect ◽  
Body Weight Gain ◽  
The Body ◽  
Finishing Pigs ◽  
Feed Conversion

Performance of growing-finishing pigs raised on either a partially slatted floor or on deep litter was measured on a group of 60 animals. The body weight gain was depressed on deep litter from 9 to 16 wk of age while an opposite effect was observed from 16 to 20 wk of age (interaction floor × age P ≤ 0.004). Feed conversion did not follow exactly the same trend but tended (P ≤ 0.11) to be improved by deep-litter housing. It appears that the effects observed could mainly be linked to the thermal comfort of the animals. There was no treatment effect (P ≤ 0.16) on carcass measurements at slaughter. Further experiments are necessary to evaluate the appropriate requirements for ventilation and heating when the deep litter system is used in close confinement. Key words: Deep-litter housing, manure enzymes, growth performance, swine

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