scholarly journals Estimating internal pelvic sizes using external body measurements in the double-muscled Belgian Blue beef breed

2003 ◽  
Vol 76 (2) ◽  
pp. 229-235 ◽  
Author(s):  
F. Coopman ◽  
S. de Smet ◽  
N. Gengler ◽  
A. Haegeman ◽  
K. Jacobs ◽  
...  
Keyword(s):  
Birth Weight ◽  
Caesarean Section ◽  
Live Weight ◽  
High Rate ◽  
Management Tool ◽  
High Birth Weight ◽  
Beef Breed ◽  
Pelvic Area ◽  
Selection For ◽  
Few Data

AbstractIn the double-muscled (DM) Belgian Blue beef (BBB) breed, caesarean section (CS) is being applied systematically as a management tool to prevent dystocia. As a matter of fact, CS is the only possible way of calving in the breed. High birth weight and a relatively small pelvic area are the main causes of dystocia and, in the DM-BBB breed, the reasons for the systematically applied CS. Selection for lower birth weight and larger pelvic sizes might reduce dystocia and routine CS. Few data on inner pelvic sizes of pedigree animals are available. Using external measurements to estimate the inner pelvic sizes might be an option to resolve this problem. In this study, animals of the DM-BBB breed were measured and weighed on farms and in abattoirs. External and internal pelvic sizes increased with live weight and age of the animals. Gender had a significant influence on inner pelvic traits. Increased muscular conformation was associated with decreased inner pelvic dimensions. Models with weight, gender, age, withers height and outer pelvic width (TcTc) can be used to estimate inner pelvic sizes (R2 between 0•35 and 0•77). The estimated inner pelvic sizes can then be used to genetically evaluate pelvic traits in the DM-BBB breed. Improving weight, withers height and TcTc width in combination with lowering muscular conformation may help to decrease the high rate of caesarean section in the DM-BBB.

scholarly journals Obstetric Anal Sphincter Injuries – Maternal, Foetal and Sociodemographic Risk Factors: A Retrospective Register-Based Study

2021 ◽  
Author(s):  
Kristin André ◽  
Andrea Stuart ◽  
Kärin Kallén
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Caesarean Section ◽  
Anal Sphincter ◽  
Maternal Education ◽  
Vacuum Extraction ◽  
High Birth Weight ◽  
Previous Caesarean Section ◽  
Obstetric Anal Sphincter Injuries ◽  
Increased Risk

Objective. To determine risk and protective factors of obstetric anal sphincter injuries (OASIS). Design. A retrospective register-based observational study. Setting. Sweden. Population. A cohort of 988, 988 singleton term deliveries 2005-2016 were included. Methods. Data from the Swedish Medical Birth Registry and Statistics Sweden were extracted to identify cases of OASIS and maternal and foetal characteristics. Modified Poisson Regression analyses were performed to assess risk factors. Main outcome measures. Risk ratios for OASIS with 95% confidence interval associated with maternal and foetal risk factors were calculated. Results. The rate of OASIS was 3.5% (n=34, 583). Primiparity (aRR 3.13 95% CI 3.05–3.21), vacuum extraction (aRR 2.79 95% CI 2.73–2.86), forceps (aRR 4.27 95% CI 3.86–4.72) and high birth weight (aRR 2.61 95% CI 2.50–2.72) were associated with a significantly increased risk of OASIS. Increasing maternal age and decreasing maternal height increased the risk of OASIS. Smoking (aRR 0.74 95% CI 0.70–0.79) and low maternal education (aRR 0.87 95% CI 0.83–0.92) were associated with a decreased frequency of reported OASIS. Obesity decreased the risk of OASIS (aRR 0.90 95% CI 0.87–0.94), but only after adjusting for foetal birth weight. Previous caesarean section increased the risk of OASIS (aRR 1.41; 95% CI 1.36–1.47). Conclusion. Primiparity, instrumental delivery and high birth weight increased the risk of OASIS. Risk factors including BMI, height, age, smoking, maternal education, ethnicity and previous caesarean section also contribute to the overall risk of OASIS. Keywords. Obstetric sphincter injuries, risk factors, pregnancy.

scholarly journals Calving difficulty as related to body weights and measurements of cows and calves in a herd of Gascon breed

2008 ◽  
Vol 53 (No. 5) ◽  
pp. 187-194 ◽  
Author(s):  
D. Bureš ◽  
L. Bartoň ◽  
R. Zahrádková ◽  
V. Teslík ◽  
M. Fiedlerová
Keyword(s):  
Birth Weight ◽  
Correlation Coefficients ◽  
Live Weight ◽  
The Body ◽  
Body Measurements ◽  
Factors Influencing ◽  
Bull Calves ◽  
Pelvic Area ◽  
Body Weights ◽  
Calving Difficulty

This study was conducted to evaluate the body weights and measurements of 86 Gascon calves and their dams. The effects of the course of parturition, parity of the dams, sex of the calves, and live- or stillborn calves were analysed. Phenotypic correlations between different measurements and calf birth weight as well as the course of parturition were calculated. Internal pelvic measurements were significantly associated with the occurrence of assisted calvings and stillborn calves. Primiparous cows had a smaller pelvic area, lower live weight, and more frequent difficulty in calving compared to older cows. A higher incidence of difficult calvings was observed in bull-calves due to their higher (<I>P</i> < 0.001) birth weight. High and significant correlation coefficients were determined between the birth weight and body measurements of the calves as well as between the calf birth weight and the course of parturition (<I>r</i> = 0.34; <I>P</i> < 0.01). Negative correlations (<I>r</i> = –0.21 to –0.30) were calculated between the internal pelvic measurements of the cows and the course of parturition score. It was concluded that the internal pelvic measurements of the dam and the size and shape of the calf were the factors influencing the course of parturition in this study to the largest extent.

79RELATIONSHIPS BETWEEN SURVIVAL RATE AND BIRTH WEIGHT IN CLONED KOREAN NATIVE CALVES

2004 ◽  
Vol 16 (2) ◽  
pp. 161
Author(s):  
B.C. Yang ◽  
G.S. Im ◽  
D.H. Kim ◽  
S.K. Lee ◽  
H.S. Park ◽  
...  
Keyword(s):  
Birth Weight ◽  
Survival Rate ◽  
Caesarean Section ◽  
Survival Rates ◽  
Blastocyst Stage ◽  
High Birth Weight ◽  
Gestation Length ◽  
Average Birth Weight ◽  
Fetal Bovine

Cloning of somatic cells has been investigated actively in cattle, but the cloned calves have been characterized by high birth weight and low survival rate. The present study was conducted to investigate the relationships between survival rate and birth weight in cloned and AI calves. The ear skin fibroblasts were obtained from 2- to 3-year-old Korean native cows (Hanwoo) and the cells were cultured in Dulbeccos Modified Eagles medium (DMEM) supplemented with 10% fetal bovine serum (FBS) at 38.5°C, 5% CO2 in air. Bovine oocytes collected from ovaries obtained from a nearby slaughterhouse were cultured in vitro and then enucleated, injected with donor cells and fused, and cultured to produce cloned embryos at the blastocyst stage. Somatic cell cloning and in vitro culture of embryos were performed by the procedures described previously (Im et al., 2001 AJAS 14, 759–764, and Im et al., 2001 AJAS 14, 1260–1266). A total of 580 cloned embryos at blastocyst stage were transferred to 293 recipient cows; 32 female calves (5.5%) were born (2 of them were born dead). Thirty-four (15 female and 19 male ) calves (57.6%) were born from 59 artificially inseminated Korean native cows as control. Fifteen of the 32 cloned calves were delivered by caesarean section. However, all the artificially inseminated cows delivered naturally. Birth weights of 30 live cloned calves averaged 31.08kg (&gt;15kg:3, 20kg:2, 25kg:2, 30kg:5, 35kg:9, 40kg:6, &lt;45kg:3), while those of female AI calves averaged 23.67kg (&gt;15kg:0, 20kg:3, 25kg:6, 30kg:6, 35kg:0, 40kg:0, &lt;45kg:0). After calving, 11 of 30 cloned calves survived for more than 365 days (birth weight of these calves averaged 28.25kg), but 19 of 30 calves died within 175 days and their average birth weight was 32.80kg (650kg). Gestation length of cows that received cloned embryos was 287 (279–295) days on average (excluding the data of calves delivered by caesarean section) and that of cows artificially inseminated was 287 (255–293) days. In conclusion, the birth weight was significantly correlated (P&lt;0.05) with survival rate of cloned calves, and survival rates of calves with extremely high or low birth weights were significantly low. However, there was no relationship between gestation length and survival rate.

Effect of selection for leanness on overall reproductive performance in Large White sows

1995 ◽  
Vol 61 (3) ◽  
pp. 561-564 ◽  
Author(s):  
J. B. Gaughan ◽  
R. D. A. Cameron ◽  
G. McL. Dryden ◽  
M. J. Josey
Keyword(s):  
Birth Weight ◽  
Reproductive Performance ◽  
Live Weight ◽  
The Other ◽  
Large White ◽  
Weaning Weight ◽  
Weaned Piglet ◽  
Selection For ◽  
Weight Number ◽  
M 14

AbstractReproductive records from 1072 Large White sows (3589 litters) were used to examine the effect ofbackfat depth (Bd) and live weight (Lw) at selection on first litter and lifetime reproductive performance. The variables investigated included mating age, total piglets born, total born alive, piglet birth weight, number weaned, piglet weaning weight, weaning to remating period and number of litters produced. Using backfat depth, sows were categorized into three groups: L, 9 to 13 mm; M, 14 to 16 mm; and F, ≥17 mm. Bd had no significant effect (P > 0·05) on the measured traits for the sows grouped by fat at first parity. When lifetime reproductive data were analysed, the L group had fewer litters (P < 0·05), and weaned fewer pigs (P < 0·01) than either the M or F group. The birth weight for piglets from L sows were significantly higher (P < 0·05) than for piglets from the other groups. The data suggest that the reproductive performance of L sows is not as good as that of M or F sows.

scholarly journals Comparison of Genetic Merit for Weight and Meat Traits between the Polled and Horned Cattle in Multiple Beef Breeds

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 870
Author(s):  
Imtiaz A. S. Randhawa ◽  
Michael R. McGowan ◽  
Laercio R. Porto-Neto ◽  
Ben J. Hayes ◽  
Russell E. Lyons
Keyword(s):  
Birth Weight ◽  
Live Weight ◽  
Practical Solution ◽  
Genetic Merit ◽  
Production Parameters ◽  
Genetic Potential ◽  
Lower Productivity ◽  
Selection For ◽  
Estimated Breeding Values ◽  
Recent Selection

Breeding for polled animals is deemed the most practical solution to eradicate horns naturally and circumvent management costs and risks on health and welfare. However, there has been a historical reluctance by some farmers to select polled animals due to perceived lower productivity of their calves. This study has compared estimated breeding values (EBVs) between horned and polled animals (N = 2,466,785) for 12 production and carcass traits to assess historical (before 2000) and recent (2000–2018) genetic implications of poll breeding. Older generations of the polled animals in most breeds had significantly lower (Bonferroni-corrected p = 0.05) genetic merits for live (birth to maturity) and carcass weights, milk, meat quality, and fat content traits. Substantial gains of genetic potential were achieved during 2000 to 2018 in each breed, such that polled animals have significantly improved for the majority of traits studied. Generally, polled cohorts showed advantageous EBVs for live and carcass weights irrespective of the lower birth weights in some breeds. While Polled Brahman showed inferior production parameters, the poll genetics’ effect size (d) and correlation (r) were very small on recent birth weight (d = −0.30, r = −0.08), 200 days (−0.19, −0.05), 400 days (−0.06, −0.02), 600 days (−0.05, −0.01), mature cow live weight (−0.08, −0.02), and carcass weight (−0.19, −0.05). In conclusion, although there is some evidence that historical selection for polled breeding animals may have reduced productivity, there is strong evidence that more recent selection for polled genotypes in the breeds studied has not resulted in any adverse effects on genetic merit.

Effectiveness of selection for growth rate in Zebu × British crossbred cattle. II.* Post-weaning growth and genetic estimates

1975 ◽  
Vol 26 (6) ◽  
pp. 1093 ◽  
Author(s):  
GW Seifert
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Average Daily Gain ◽  
Genetic Correlations ◽  
Female Offspring ◽  
High Birth Weight ◽  
Environmental Correlations ◽  
Final Weight ◽  
Selection For ◽  
Daily Gain

The response to one generation of selection for weight per day of age at 18 months (W/Af), in Africander cross (AX) and Brahman cross (BX) cattle, was evaluated in the female offspring of the up and down selected parents. The high W/A< line gained significantly more than the low line over a year from weaning. The advantage of the high W/A line occurred during flush nutritional periods. The realized heritability (h2) of W/Af at 18 months was 0.52, while the estimates of h2 from mid-parental means computed within sires was higher. Heritability estimates for birth weight (Wb), weaning weight per day of age (W/Aw), pre-weaning average daily gain (Gbw) and total average daily gain from birth to final weight (Gt) were all high, while the estimate for post-weaning average daily gain from weaning to final weight (Gpw) was low. The correlated responses of all the traits were high. The genetic correlations estimated from the response and the parent-offspring regressions were all positive and high. Birth weight was the most highly correlated with Gt. All phenotypic correlations were positive but lower than the genetic correlations, the correlation between Gbw and Gpw being the lowest. Environmental correlations between birth weight and pre-weaning traits were essentially zero, and between birth weight and post-weaning traits and Gt, negative. Weight per day of age at 18 months appeared to be the most efficient and practical single trait to select beef cattle for increased growth rate.

scholarly journals Sokoto Red and Sahelian goats: The untapped potential for improving meat production in the developing economy of Nigeria

2020 ◽  
Vol 44 (4) ◽  
pp. 325-332
Author(s):  
I. I. Adedibu ◽  
F. E. Sola- Ojo ◽  
M. Lawal
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Meat Production ◽  
High Birth Weight ◽  
Developing Economy ◽  
Weaning Weight ◽  
Stages Of Growth ◽  
Study Results ◽  
Production Research ◽  
Selection For

A study was conducted on indigenous unselected Sokoto Red (SR) and Sahel (SH) goats in National Animal Production Research Institute, (NAPRI), Ahmadu Bello University, Shika- Zaria, Kaduna State, Nigeria. The study was carried out to understand how birth, pre- weaning and post-weaning weights in the SR and SH goats can be used to improve their productivity. Thirty kids (10 males and 20 females) of SR and thirty kids (10 males and 20 females) of SH breeds of goat were utilised for this study. Results obtained showed that the coefficient of variation (CV) was very low. There were no significant differences (P>0.05) among mean bodyweight at birth, 30 days pre-weaning, 60 days pre-weaning, 90 days post- weaning and 120 days post-weaning weights of SR and SH goats except at 150 days post- weaning weight. Highly positive phenotypic correlations existed in the SR goats between 90- day weaning weight and 120-day post weaning; 90-day weaning weight and 150-day post weaning.120-day post weaning weight and 150-day post weaning.The birth weight of the SH goats were highly significant (P<0.05) and positively correlated with body weight at 30, 60, 90, 120 and 150 days old. It was observed that the sampled population was homogeneous for all traits. The 90-day weight of the SR can be utilised to improve for body weight at 30-, 120- and 150- days of age while in the SH goat, selection for high birth weight would enhance improvement for high body weight at later stages of growth.

Prevalence and determinants of caesarean section in Jamaica

1992 ◽  
Vol 24 (4) ◽  
pp. 515-525 ◽  
Author(s):  
Linda A. Webster ◽  
Janet R. Daling ◽  
Carmen McFarlane ◽  
Deanna Ashley ◽  
Charles W. Warren
Keyword(s):  
Birth Weight ◽  
Caesarean Section ◽  
Breech Presentation ◽  
Maternal Diabetes ◽  
Medical Complications ◽  
High Birth Weight ◽  
Cephalopelvic Disproportion ◽  
Government Hospitals ◽  
Maternal Hypertension ◽  
Hospital Births

SummaryThe prevalence and determinants of primary caesarean section in Jamaica were estimated from a survey of women aged 14–49 years. Among 2328 women reporting 2395 live hospital births during the period January 1984 to May 1989, the prevalence of caesarean section was 4·1%. Repeat caesarean sections accounted for 1·3% of the hospital births during that period. Of the medical complications studied, prolonged labour and/or cephalopelvic disproportion carried the highest risks of primary caesarean section, followed by breech presentation, maternal diabetes, a high birth-weight baby, maternal hypertension, and a low birth-weight baby. The risk of primary caesarean section increased with maternal age, decreased with parity, was higher for urban than for rural residents, and was higher for births in private versus government hospitals.

Relationship between dam and calf characteristics with regard to dystocia in Belgian Blue double-muscled cows

2001 ◽  
Vol 72 (2) ◽  
pp. 389-394 ◽  
Author(s):  
L. O. Fiems ◽  
S. de Campeneere ◽  
W. van Caelenbergh ◽  
Ch. V. Boucqué
Keyword(s):  
Birth Weight ◽  
Caesarean Section ◽  
Post Partum ◽  
Live Weight ◽  
Factors Affecting ◽  
Beef Cow ◽  
The Relationship

AbstractInformation concerning 493 single calvings of the double-muscled beef cow herd of the institute was collected to investigate the relationship between the characteristics of dams and calves with regard to dystocia. Factors affecting dystocia are similar in double-muscled cattle to those in non-double-muscled cattle but the occurrence of dystocia is greatly increased in double-muscled cows. Incidence of caesarean section was significantly correlated with parity (–0·243), age of dam (–0·232), post-partum dam weight (–0·185), and calf birth weight (0·164). Caesarean deliveries were required for 89·5% of the parturitions. Calvings without caesarean section were characterized by higher means for post-partum dam live weight (634·7 kg), age (1675·5 days), parity (3·1) and the ratio of post-partum dam weight to calf birth weight (14·4), compared with 580·2 kg, 1251·1 days, 2·1, and 11·8, respectively for births with caesarean setion, while calf birth weight was lower in non-caesarean calvings (45·8 v. 49·9 kg). Caesarean births involved more male calves than females (55 v. 45%). Even when calf birth weight was 30 kg or lower, and also in multiparous cows, 40 and 86% of the deliveries, respectively, still occurred with a caesarean section.Incidence of caesarean section could not be accurately predicted from pre-partum characteristics such as pre-partum dam weight, age and parity.

scholarly journals Outcome of Teenage Pregnancy

2014 ◽  
Vol 2 (2) ◽  
pp. 11-14 ◽  
Author(s):  
M Tripathi ◽  
A Sherchand
Keyword(s):  
Public Health ◽  
Birth Weight ◽  
Caesarean Section ◽  
Low Birth Weight ◽  
Teenage Pregnancy ◽  
Public Health Problem ◽  
High Rate ◽  
Instrumental Delivery ◽  
Control Group ◽  
Study Group

INTRODUCTION: Teenage pregnancy is coming up as one of the most important social and public health problem all over the world. Teenage pregnancy is a common social phenomenon with public health and medical consequences worldwide. The study was done to compare obstetric and perinatal outcome in teenage and non-teenage pregnancies. METHODS: This is a comparative study. The study duration was from 10th January 2010 to 9th January 2012. All teenage mothers (aged 13-19 completed years at delivery) delivering in the Gandaki Medical College (GMC) hospital, Pokhara were taken as cases (study group). Next 2 consecutive deliveries in the age group of 20-30 year were selected as control for each case. RESULTS: The incidence of complications in teenage primigravida (study group) compared with non-teenage (control group) deliveries were anemia (20% vs 6%), preterm labour (20 % vs 7%), Urinary tract infection(UTI) (8 % vs 4%), pre-eclampsia (4 % vs 2%) and Prelabour Rupture of Membrane(PROM) (10% vs 4%). Similarly, abnormal presentation (6% vs 2%), placenta praevia (4% vs 1%), Fetal distress(FD) (8% vs 3%), Cephalo Pelvic Disproportion(CPD) (6 % vs 2%) and Low Birth Weight(LBW) (24 % vs 9 %)were recorded respectively. In study group, 58% of the patients were delivered vaginally & 24% were delivered by caesarean section, 6% delivered by breech and 12% of patients had instrumental delivery. In non-teenage group, 74% of the patients delivered vaginally & 14% were delivered by caesarean section, 4% delivered by breech and 8% of patient had instrumental delivery.CONCLUSION: Teenage pregnant mothers had high rate of inadequate prenatal care, suffered more from anemia, UTI, & were more likely to deliver preterm and had low birth weight babies. They had high rates of operative and instrumental delivery. DOI: http://dx.doi.org/10.3126/jucms.v2i2.11168 Journal of Universal College of Medical Sciences (2014) Vol.2(2): 11-14

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