Genetic correlations between body weight, scrotal circumference and visual evaluation scores in Bos indicus cattle

2018 ◽  
Vol 89 (9) ◽  
pp. 1223-1229 ◽  
Author(s):  
Luíza R. A. Abreu ◽  
Paulo G. M. A. Martins ◽  
Lúcio F. M. Mota ◽  
Talita A. Ferreira ◽  
Virgínia M. P. Ribeiro ◽  
...  
Keyword(s):  
Body Weight ◽  
Bos Indicus ◽  
Genetic Correlations ◽  
Visual Evaluation ◽  
Scrotal Circumference ◽  
Evaluation Scores

scholarly journals MORPHOMETRIC STUDIES OF THE REPRODUCTIVE ORGANS AND SPERM RESERVES OF M'BORORO (Bos indicus) BULLS

2021 ◽  
Vol 25 (2) ◽  
pp. 111-114
Author(s):  
H. D Kwari ◽  
S. O. Ogwuegbu
Keyword(s):  
Body Weight ◽  
Prostate Gland ◽  
Bos Indicus ◽  
Reproductive Organs ◽  
Accessory Gland ◽  
The Body ◽  
Testicular Sperm ◽  
Scrotal Circumference ◽  
The Mean ◽  
Sexually Mature

Morphometric data of the reproductive organs and the gonadal and extra-gonadal sperm reserves were determined in sexually mature M'bororo bulls. The mean body weight was 560±15.8kg and measured 175.8±4.3cm at the withers. The mean paired testes weight and scrotal circumference were 266.5±28.9g and 28.2±0.8cm, respectively. The body weight was significantly and positively corellated with the testicular sperm reserves (P<0.05). The paired testicular sperm reserves was 27.3±3.1 *109. The mean weights of the accessory gland were: Seminal Vesicles, 42.2±4g; ampullae, 12.4±2.0g;Prostate gland, 2.2±0.29g and 1.3±0.3g for the bulbourethral gland. The mean penis lenght was 80.9±2.9cm while the glans penis and the urethral process measured 3.1±0.1cm and 1.9±0.1cm, respectively

Heritabilities and genetic correlations of body weight, testis growth and ewe lamb reproductive traits in crossbred sheep

1995 ◽  
Vol 60 (2) ◽  
pp. 185-195 ◽  
Author(s):  
S. L. Fossceco ◽  
D. R. Notter
Keyword(s):  
Body Weight ◽  
Genetic Correlations ◽  
Reproductive Traits ◽  
Scrotal Circumference ◽  
Ewe Lambs ◽  
Body Weights ◽  
Ewe Lamb ◽  
Alternative Measures ◽  
Testes Size ◽  
The One

AbstractHeritabilities (h2) and genetic correlations (rc) involving body weights, measures of testes size and ewe lamb reproduction were calculated using 953 spring-born lambs produced during formation of a three-breed composite population containing 0·50 Dorset, 0·25 Rambouillet and 0·25 Finnish Landrace breeding. The h2 of body weight ranged from 0·2 to 0·3 between 45 and 150 days of age, but increased to 0·41 at the start of breeding of ewe lambs at about 6 months of age. Additive maternal effects were not important, perhaps because intensive housing encouraged cross-suckling. Testes size was measured as scrotal circumference (SC), SC with linear adjustment for weight (SCW) and SC divided by the one-third power of body weight (RSC). The h2 of SC traits was highest at 90 days (0·52 for SC, 0·62 for RSC and 0·57 for SCW), and h2 for age at maximum SC growth rate (i.e. TI, the inflexion point of a logistic SC growth curve) was 0·49. The h2 of ewe lamb fertility in autumn was 0·09 but the h2 for frequency of remating the following spring was 0·41. The h2 for ewe lamb litter size in these data was zero. At 90 days, rc between alternative measures of testes size exceeded 0·86; rG with body weight were 0·67 for SC, 0·53 for RSC and –0·74 for TI. The rG with ewe lamb fertility for 90-day weight, SC, RSC and SCW and for TI were –0·25, 0·20, 0·25, 0·38 and –0·32, respectively. The rc for these traits with spring remating were 0·34, 0·34, 0·26, 0·10 and –0·48, respectively.

PSVII-29 Genetic analysis of frame score and performance traits in Nellore cattle – reproduction and productivity traits

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 238-238
Author(s):  
Fernando S Baldi ◽  
Maria Paula Negreiros ◽  
Elisa Peripolli ◽  
Claudio U Magnabosco ◽  
Nayanny Guimarães ◽  
...  
Keyword(s):  
Animal Model ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Genetic Correlations ◽  
Genetic Selection ◽  
Heritability Estimate ◽  
Reproductive Traits ◽  
Scrotal Circumference ◽  
Nellore Cattle ◽  
Cattle Reproduction

Abstract Frame score systems developed for Bos taurus breeds do not translate well for Bos indicus breeds, as these tend to be taller. We evaluated a novel frame score system for Nellore cattle raised on pasture [Guimaraes et al., 2020 J, Anim. Sci. 98 (Suppl. 4)]. Traits included adjusted scrotal circumference (cm) at 365 (SC365) and 450 (SC450) days of age, age at first calving (AFC, d), early heifer pregnancy (EHP, % calving as two-year-olds), stayability (STAY, % of cows remaining in the herd over 76 months of age, calving at least three times), and accumulated productivity (AP, kg of calf weaned per cow per year). In this study, we applied the previously developed equations (that also include hip height (HH, cm) and age to 12,049 records from the National Association of Breeders and Researchers (ANCP) database:FSmales= -20.35 + 0.1305*REA + 0.2633*BF - 0.5901*RF + 0.1139*HH + 0.0056*AGEFSfemales = -11.87 + 0.1316*REA - 0.2457*BF - 0.6218*RF + 0.1139*HH + 0.0009507*AGEThe (co)variance components and genetic parameters were estimated using a linear animal model or a threshold animal model depending on the trait. The heritability estimate for frame score was moderate (0.30). Estimated genetic correlations for reproductive traits were low to moderate (SC365, 0.06; SC450, 0.04; AFC, 0.18; EHP, -0.24; STAY, 0.06; AP, 0.25). The estimates support the notion that larger frame animals are later maturing but have greater lifetime productivity. The new frame score may be a useful tool for genetic selection of animals that are best suited to their environment.

scholarly journals Scrotal Circumference and Its Relationship with Testicular Growth, Age, and Body Weight in Tho Tho (Bos indicus) Bulls

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
P. Perumal
Keyword(s):  
Body Weight ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Selection Criterion ◽  
The Body ◽  
Research Centre ◽  
Testicular Development ◽  
Scrotal Circumference ◽  
Group I ◽  
Highly Correlated

The present study was undertaken to assess the relationship between the scrotal circumference and testicular parameters with body weight and age in Tho Tho bulls (Bos indicus), which were maintained at around the villages of National Research Centre on Mithun (ICAR), Jharnapani, Nagaland, India. A total of 32 Tho Tho bulls were selected and divided into four groups according to their age and each group consisted of 8 bulls, namely, Group I: 18–24 months (n=8), Group II: 25–36 months (n=8), Group III: 37–48 months (n=8), and Group IV: 49 months and above (n=8). The scrotal circumference and testicular parameters were measured with caliper and tape and age of animals was calculated with dental formula. The body weight of bulls was estimated with Shaeffer’s formula. Result revealed that the scrotal circumference was highly correlated with testicular parameters and body weight compared to age. Compared to exotic cattle (Bos taurus), Tho Tho bull’s testicular parameters and scrotal circumference were lower. The results of the present study in Tho Tho bulls revealed that scrotal circumference is a useful indicator and is an important selection criterion to determine the testicular development and breeding soundness in young bulls as it is highly correlated with tesicular parameters.

The performance of Brahman-Shorthorn and Sahiwal-Shorthorn beef cattle in the dry tropics of northern Queensland. 5. Scrotal circumference, temperament, ectoparasite resistance, and the genetics of growth and other traits in bulls

1996 ◽  
Vol 36 (1) ◽  
pp. 9 ◽  
Author(s):  
G Fordyce ◽  
CJ Howitt ◽  
RG Holroyd ◽  
PK O'Rourke ◽  
KW Entwistle
Keyword(s):  
Growth Rates ◽  
Bos Indicus ◽  
Genetic Correlations ◽  
Boophilus Microplus ◽  
Flight Distance ◽  
Cattle Tick ◽  
Scrotal Circumference ◽  
Dry Tropics ◽  
Significant Relationships ◽  
Tick Resistance

The genetics of growth to 24 months, scrotal circumference (SC) at 24 months and temperaments at 6, 12 and 18 months in 7 year groups of F2 et seq., 1/2 Brahman, 1/2 Sahiwal, 3/4 Brahman and 3/4 Sahiwal bulls were investigated in the dry tropics of northern Queensland. Cattle tick (Boophilus microplus) and buffalo fly (Haematobia irritans exigua) resistance were also assessed at 24 months. Scrotal circumference at 24 months was highest in 1/2 Sahiwal crosses (28 cm v. 26-27 cm; P<0.05) with pronounced variation between years (24-31 cm; P<0.05). Temperaments (TEM score; flight distance) were generally poorest in 3/4 Sahiwal crosses (P<0.05). Bulls of 1/2 Bos indicus content were twice as susceptible as 3/4 crosses to tick infestations (P<0.05). There were no genotype differences in natural buffalo fly infestations. Temperaments, tick resistance and buffalo fly resistance all had no consistent significant relationships with either each other or with weights or growth rates to 24 months. Paternal half-sib estimates of heritabilities across all genotypes were generally moderate for weight (0.20-0.36), growth rates (0.08-0.46), and SC (0.32), low for TEM score (0.08-0.14), and high for flight distance (0.32-0.70). The genetic correlations (rG) between growth rates in both dry and wet seasons after weaning were high (>0.9); however, the rG of weaning weight with postweaning seasonal growth rates to 24 months were consistently negative (-0.09 to -0.71; P>0.05). The rG of SC with post-weaning growth rates were negative (-0.4 to -0.8). The rG of SC with weights up to 18 months were not significantly different to zero, but tended to be negative with weight at 24 months.

scholarly journals Heritability estimates and genetic correlations for body weight and scrotal circumference adjusted to 12 and 18 months of age for male Nellore cattle

animal ◽  
2009 ◽  
Vol 3 (3) ◽  
pp. 347-351 ◽  
Author(s):  
O.G. Frizzas ◽  
D.A. Grossi ◽  
M.E. Buzanskas ◽  
C.C.P. Paz ◽  
L.A.F. Bezerra ◽  
...  
Keyword(s):  
Body Weight ◽  
Genetic Correlations ◽  
Scrotal Circumference ◽  
Nellore Cattle ◽  
Heritability Estimates

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

Genetic associations between age at first calving and heifer body weight and scrotal circumference in Nelore cattle

2009 ◽  
Vol 126 (5) ◽  
pp. 387-393 ◽  
Author(s):  
D.A. Grossi ◽  
G.C. Venturini ◽  
C.C.P. Paz ◽  
L.A.F. Bezerra ◽  
R.B. Lôbo ◽  
...  
Keyword(s):  
Body Weight ◽  
Genetic Associations ◽  
Age At First Calving ◽  
Scrotal Circumference ◽  
Nelore Cattle

scholarly journals An exertion of enhance milk yield of native Pabna cattle through using different types of calcium salt of fatty acid

2018 ◽  
Vol 15 (2) ◽  
pp. 137-146 ◽  
Author(s):  
D Yeasmin ◽  
N Islam ◽  
NR Sarker ◽  
N Huda ◽  
A Habib ◽  
...  
Keyword(s):  
Body Weight ◽  
Fatty Acid ◽  
Milk Yield ◽  
Calcium Salt ◽  
Bos Indicus ◽  
Mustard Oil ◽  
Initial Body Weight ◽  
Significant Difference ◽  
Different Types ◽  
Concentrate Mixture

Keeping consideration on increasing quality milk production through addition of conventional fat, an experiment accords CRD design was conducted at Bangladesh Livestock Research Institute, Savar, Dhaka for a period of 30 days including 5 days of digestibility trial. Twenty lactating Pabna cattle of average 250.1 ± 13.64 kg (Bos indicus) of initial body weight with average milk yield of 2.88 ± 0.38 kg were selected and divided into four groups randomly having five cows in each. The imposed treatments were T0, T1, T2, and T3; in where To= German grass + Concentrate mixture without Ca salt of fatty acid + 2.5 % DCP, T1= German grass + Concentrate mixture + 2.5 % soybean based Ca salt of fatty acid, T2= German grass + Concentrate mixture + 2.5 % mustard based Ca salt of fatty acid and T3= German grass + Concentrate mixture + 2.5% palm-oil based Ca salt of fatty acid. The result showed that, calcium salt of fatty acid influenced to increase of milk yield significantly among (P<0.001) the treatments; in where highest yield gained in T1 (3.53 kg d-1) followed by T2, T0 and T3 (3.33, 2.44 and 2.24, respectively). Besides this, all other parameters analytically examined in this experiment i.e. intake, apparent digestibility, gained body weight and chemical composition of milk showed non-significant difference among the treatments. From the analytical value and discussion, it may be suggested that, calcium salt of fatty acid formulated from soybean oil or mustard oil could be used for enhancing better quality milk yield.SAARC J. Agri., 15(2): 137-146 (2017)

scholarly journals Scrotal Circumference and its Relationship with Testicular Growth, Age, and Body Weight in Murrah Buffalo Bulls

2019 ◽  
Vol 8 (11) ◽  
pp. 2270-2274
Author(s):  
V.H. Shende ◽  
S.H. Sontakke ◽  
V.V. Potdar ◽  
Tejsjree V. Shirsath ◽  
J.R. Khadse
Keyword(s):  
Body Weight ◽  
Murrah Buffalo ◽  
Testicular Growth ◽  
Scrotal Circumference
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