Evaluation of reproductive performance in sows of PresticeBlack-Pied pig - Czech genetic resource

2016 ◽  
Author(s):  
Pavel Nevrkla ◽  
Eva Václavková ◽  
Zdenìk Hadaş ◽  
Pavel Horký
Keyword(s):  
Genetic Resources ◽  
Experimental Work ◽  
Reproductive Performance ◽  
Genetic Resource ◽  
Conception Rate ◽  
Gestation Length ◽  
The Third ◽  
Significant Difference ◽  
Length Of Interval

The aim of the study was to evaluate reproductive performance in selected sows of Prestice Black-Pied pig included in Czech genetic resources and also to analyse losses of piglets and culling of sows according to parity order. The experimental work was conducted in a nucleic herd of sows registered in breeding book. A total of 88 sows were included in the observation. Findings indicate that productive parameters of Prestice Black-Pied sows are comparable to productive parameters of modern genotype sows. The results also showed that the highes conception rate after the first insemination was achieved after the second, the third and the fourth parity. Analysis of gestation length revealed that it was significantly influenced by the parity. Very highly significant difference (P<0.001) was found between the 1st and the 2nd parity and between the 1st and the 4th parity. Total numbers of piglets and numbers live-born, stillborn and reared piglets per litter increased significantly (P<0.001, P<0.01, P<0.05) up to the 4th parity, afterwards they continuously decreased. The number of stillborn piglets was the lowest at the 2nd parity, the highest at the 5th and the 6th parity (P<0.05). Length of interval was highly significantly different (P<0.01) between the 2nd and the 5th parity and significantly different (P<0.05) between the 4th and the 5th parity. Differences in the losses of piglets were not significant among parities. The most radical culling of sows was recorded after the 3rd and the 4th parity.

Reproductive performance of Shorthorn and Brahman crossbred cows in the dry tropics of north Queensland

1979 ◽  
Vol 19 (98) ◽  
pp. 276 ◽  
Author(s):  
RG Holroyd ◽  
PK O'Rourke ◽  
PJ Allan
Keyword(s):  
Reproductive Performance ◽  
Experimental Period ◽  
Ovarian Activity ◽  
Gestation Length ◽  
Variable Effect ◽  
Crossbred Cows ◽  
Lactating Cows ◽  
Dry Tropics ◽  
Significant Difference ◽  
Conception Rates

A study was made (1 970 to 1973) of the reproductive performance of Shorthorn and Brahman crossbred cows grazing pasture in the dry tropics of north Queensland. Breed had a variable effect on the conception rates of lactating cows, with Brahman crossbreds having significantly higher (P < 0.05) conception rates in the first year. The two breeds had similar conception rates in the following year. In the third year, overall conception rates of both breeds were reduced due to a prolonged dry season, with Shorthorn cows having significantly higher (P < 0.01) conception rates than Brahman cows. However, during this dry period, twice as many Shorthorn cows required survival feeding as did Brahman cows. Calving rates followed conception rates closely, prenatal loss in each breed being low. In all years, Shorthorns had significantly earlier (P < 0.05) calving dates than Brahmans. The interval from calving to first recorded ovarian activity was significantly longer (P < 0.05) in Brahman cross than in Shorthorn cows in only one of the three years. There was no significant difference between breeds for the interval from first recorded ovarian activity to conception, but this interval decreased with increasing age of the cow. Breed had a variable effect on gestation length. Brahman cows were generally heavier each year in April and in better condition throughout the experimental period than Shorthorn cows.

scholarly journals Sperm concentration on the intrauterine artificial insemination in swine

2009 ◽  
Vol 33 (6) ◽  
pp. 1671-1674
Author(s):  
Joana Miller ◽  
Ana Luísa Neves Alvarenga ◽  
Luis David Solis Murgas ◽  
Adriana Cristina da Silva ◽  
Ricardo Sales Araújo ◽  
...  
Keyword(s):  
Litter Size ◽  
Reproductive Performance ◽  
Artificial Insemination ◽  
Intrauterine Insemination ◽  
Sperm Concentration ◽  
Conception Rate ◽  
Cervical Canal ◽  
Significant Difference ◽  
Estrus Detection ◽  
Farrowing Rate

The aim of this work was to evaluate the efficiency of the intrauterine insemination (IUI) in swine, considering the conception rate, farrowing rate, litter size (alive born pigs). For the IUI, the females had been insemination at 24 and 48 hours after the estrus detection, and the inseminating doses of 500 million, 1 billion, 1.5 billion and 2 billion spermatozoa in 20 mL extender had been used. The procedure of catheter insertion through the cervical canal was successfully performed in 97.9% of the females. The conception rate was 6.3% in the IUI. The farrowing rate in IUI was 87.2% but the farrowing rate was 100% for the sperm concentration of 500 million. Regarding the number of born pigs and alive born pigs observed in females inseminated with IUI, no significant difference was observed (p > 0.05). The concentration of 500 x 10(6) spermatozoa in 20 mL extender in the intrauterine insemination resulted in an optimal reproductive performance.

Using Suffolk sheep for improving lamb production from sub-tropical Egyptian sheep:1. Reproductive performance

1978 ◽  
Vol 90 (1) ◽  
pp. 125-130 ◽  
Author(s):  
A. M. Aboul-Naga
Keyword(s):  
Reproductive Performance ◽  
Conception Rate ◽  
Multiple Births ◽  
Tropical Conditions ◽  
Significant Difference ◽  
The Cross ◽  
Suffolk Sheep

SUMMARYThe present study deals with the reproductive performance of an imported Suffolk flock and the cross-bred ewes resulting from upgrading the local Ossimi sheep with the Suffolk. A total of 1738 ewe records were available for the study.No significant difference was found between Suffolk and Ossimi ewes in conception rate or proportion of multiple births. However, the Ossimi ewes (mated to Suffolk rams) weaned 25 more lambs per 100 ewes lambing than the imported ewes. The cross-bred ewes were of better reproductive performance than both pure-breds. The best Suffolk cross-bred ewes were those of 40–49 % Suffolk breeding. They weaned 21 more lambs per 100 ewes run with the rams than the local ewes. Reproductive performance of the cross-bred ewes declined with increasing Suffolk genotype above this proportion.Under the prevailing sub-tropical conditions, the Suffolk ewes have an anoestrous period of 200 days from late January to late July or August; the local ewes showed oestrous activity throughout the year, but with some irregularity.

An analysis of reproductive performance in pigs based on records of performance of the boar

1977 ◽  
Vol 17 (85) ◽  
pp. 256 ◽  
Author(s):  
K Baharin ◽  
RG Beilharz
Keyword(s):  
Birth Weight ◽  
Litter Size ◽  
Reproductive Performance ◽  
Conception Rate ◽  
Gestation Length ◽  
Large White ◽  
Average Birth Weight ◽  
Litter Weight ◽  
Commercial Farm ◽  
Heritability Estimates

The reproductive performance of 308 boars with total records of 9220 matings from a large commercial farm was analysed. The boars were purebred Large White, Landrace and from the newly synthesized M breed and were mated to purebred and crossbred sows of the same breeds. The M breed was derived from crossing between Large White and Landrace pigs with foundation females selected on the basis of their ability to produce large litters. Over half the total records were from matings with sows of parity 1 and parity 2. Overall production statistics were 78.8 per cent conception rate, an average total litter size of 9.3 pigs born per litter, 6.5 per cent stillbirths, an average litter weight (live piglets) at birth of 12.2 kg, average birth weight per piglet of 1.43 kg and average gestation length of 11 5 days. Most of the traits analysed showed significant effects due to parity of dams, with performance increasing from parity 1 to parity 6 to 8, after which the performance began to decline. There were significant heterosis effects (mainly maternal) on reproduction of the sows and survival performance of the litters resulting in an estimated improvement of 11 per cent in number of live pigs born, 12.4 per cent in total litter weight at birth and 35 per cent reduction in stillbirths. Heritability estimates were generally low for most traits except for boar conception rate which was moderate (0.29).

scholarly journals Productive and reproductive performance of Holstein Friesian crossbred and indigenous cow under small holder farming system

2016 ◽  
Vol 44 (3) ◽  
pp. 166-170 ◽  
Author(s):  
MJA Mamun ◽  
MAS Khan ◽  
MAH Sarker ◽  
MN Islam
Keyword(s):  
Milk Yield ◽  
Reproductive Performance ◽  
Post Partum ◽  
Farming System ◽  
Gestation Length ◽  
Lactation Period ◽  
Genetic Groups ◽  
Holstein Friesian ◽  
Biological Studies ◽  
Significant Difference

This study was done to investigate the productive and reproductive performances of Holstein Friesian crossbred (HF) and indigenous (IG) cows. A total 131 dairy cows of two genetic groups as IG (117 heads) and HF (14 heads) were selected randomly. The study found that the average milk yield per day of HF and IG cows were 7.64±1.74 and 1.75±0.07 liters/day, respectively. The milk yield was found significantly (p<0.01) higher in HF cows than of IG cows. The lactation period of HF was significantly (p<0.05) higher than of IG cows. Age at first calving of IG cows was significantly (p<0.01) 4 months higher than HF cows. The number of service per conception was almost similar for HF and IG cows. Higher significant difference was found in Post-partum oestrus (p<0.05), dry period (p<0.01), calving intervals (p<0.01) of IG than HF cows. The gestation length of HF and IG cows was significantly indifferent. Above biological studies mentioned better productive and reproductive performance of HF cows than IG cows.Bang. J. Anim. Sci. 2015. 44 (3):166-170

Effect of premating shearing on reproductive performance in ewe lambs after oestrus synchronization

1991 ◽  
Vol 116 (1) ◽  
pp. 135-138
Author(s):  
J. V. O'Doherty ◽  
T. F. Crosby
Keyword(s):  
Growth Rate ◽  
Litter Size ◽  
Reproductive Performance ◽  
Medroxyprogesterone Acetate ◽  
Conception Rate ◽  
Factorial Experiment ◽  
Ewe Lambs ◽  
Significant Difference ◽  
Lamb Growth

SUMMARYOne hundred and fifty-four, March-born, lowland ewe lambs, on the Lyons Estate farm, were allocated to a 2×2 factorial experiment. In September 1987, half were shorn and 1 month later the lambs were treated with intravaginal sponges, containing either 60 mg medroxyprogesterone acetate or 40 mg fluorogestone acetate, for 12 days. Following sponge removal, ewes were mated to fertile rams at a ram: ewe ratio of 1:6. There was no significant difference in reproductive performance between the two progestagen treatments (P > 0·05). Premating shearing increased (P < 0·01) conception rate and reduced the percentage of barren ewes (P < 0·01) but there was no effect on litter size. Time of gestation following shearing was increased (P < 0·01) by 1·24 days. Lamb growth rate up to weaning was not affected by the shearing treatment. The results of this trial indicate positive advantages of premating shearing of ewe lambs.

Reproductive performance of Red Chittagong Cattle in a nucleus herd

1970 ◽  
Vol 39 (1-2) ◽  
pp. 9-19 ◽  
Author(s):  
MA Habib ◽  
AKFH Bhuiyan ◽  
MR Amin
Keyword(s):  
Reproductive Performance ◽  
Genetic Resource ◽  
Post Partum ◽  
Dairy Farm ◽  
Reproductive Traits ◽  
Gestation Length ◽  
Service Period ◽  
Animal Genetic Resource ◽  
Heat Period ◽  
The Mean

The present study was undertaken to estimate the performance of some reproductive traits of Red Chittagong Cattle (RCC) is an important indigenous Farm Animal Genetic Resource of Bangladesh having some efficient reproductive capabilities. The effect of parity on these traits was also studied. The study was conducted in the nucleus herd of RCC Project at Bangladesh Agricultural University (BAU) dairy farm taking data from 2005 to 2008. The traits considered for this study were age at sexual maturity, age at first calving, number of service per conception, conception rate, calving interval, post partum heat period, gestation length and service period of RCC cows. The mean (±SE) values of the said traits are 28.75 ± 1.26 months, 40.93 ± 1.74 months, 1.55 ± 0.08, 78.91 ± 2.82 %, 14.42 ± 0.33 months, 127.71 ± 7.02 days, 282.11 ± 0.58 days and 151.72 ± 6.83 days, respectively. All the traits studied did not differ significantly (P>0.05) between different parities. Key words: RCC; Nucleus herd; Reproductive traits DOI: http://dx.doi.org/10.3329/bjas.v39i1-2.9673 Bang. J. Anim. Sci. 2010, 39(1&2): 9-19

scholarly journals Assessment of the Growth and Reproductive Performance of Cloned Pietrain Boars

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2053
Author(s):  
Junsong Shi ◽  
Baohua Tan ◽  
Lvhua Luo ◽  
Zicong Li ◽  
Linjun Hong ◽  
...  
Keyword(s):  
Growth Rate ◽  
Body Size ◽  
Growth Performance ◽  
Reproductive Performance ◽  
Semen Quality ◽  
Small Body ◽  
Economic Benefits ◽  
Large Animal ◽  
Significant Difference ◽  
F1 Progeny

How to maximize the use of the genetic merits of the high-ranking boars (also called superior ones) is a considerable question in the pig breeding industry, considering the money and time spent on selection. Somatic cell nuclear transfer (SCNT) is one of the potential ways to answer the question, which can be applied to produce clones with genetic resources of superior boar for the production of commercial pigs. For practical application, it is essential to investigate whether the clones and their progeny keep behaving better than the “normal boars”, considering that in vitro culture and transfer manipulation would cause a series of harmful effects to the development of clones. In this study, 59,061 cloned embryos were transferred into 250 recipient sows to produce the clones of superior Pietrain boars. The growth performance of 12 clones and 36 non-clones and the semen quality of 19 clones and 28 non-clones were compared. The reproductive performance of 21 clones and 25 non-clones were also tested. Furthermore, we made a comparison in the growth performance between 466 progeny of the clones and 822 progeny of the non-clones. Our results showed that no significant difference in semen quality and reproductive performance was observed between the clones and the non-clones, although the clones grew slower and exhibited smaller body size than the non-clones. The F1 progeny of the clones showed a greater growth rate than the non-clones. Our results demonstrated through the large animal population showed that SCNT manipulation resulted in a low growth rate and small body size, but the clones could normally produce F1 progeny with excellent growth traits to bring more economic benefits. Therefore, SCNT could be effective in enlarging the merit genetics of the superior boars and increasing the economic benefits in pig reproduction and breeding.

scholarly journals Publication activity of chief and consultant general/visceral surgeons in German university hospitals—a ten-year analysis

2021 ◽  
Author(s):  
Eva C. Böckmann ◽  
E. S. Debus ◽  
R. T. Grundmann
Keyword(s):  
Impact Factor ◽  
Publication Activity ◽  
University Hospitals ◽  
Cumulative Impact ◽  
University Departments ◽  
The Third ◽  
Publication Number ◽  
Significant Difference ◽  
The Mean ◽  
Number Of Publications

Abstract Purpose The publication activity of 38 German general/visceral surgery university departments, documented by first or last authorship from staff surgeons (chief and consultants), was evaluated. Methods The observation period extended from 2007 to 2017 and all PubMed-listed publications were considered. Impact factor (IF) was evaluated through the publishing journal’s 5-year IF in 2016, as was the IF for each individual publication. Ranking was expressed in quartiles. Results The staff surgeons of the 38 departments comprised 442 surgeons, of which only 351 (79.4%) were active as first or last authors. Four thousand six hundred and ninety-nine publications published in 702 journals were recorded. The four leading departments in publication number published as much as the last 20 departments (1330 vs. 1336 publications, respectively). The mean of the first (most active) department quartile was 19.6 publications, the second 15.4, the third 11.0, and the last quartile 7.6 per publishing surgeon. The total cumulative impact factor was 14,130. When examining the mean number of publications per publishing surgeons per the 10 year period, the mean of the first quartile was 57.9 cumulative IF, the second 45.0, the third 29.5, and the fourth quartile 17.1. With 352 (7.5%) publications, the most frequently used journal was Chirurg, followed by Langenbeck’s Archives of Surgery with 274 (5.8%) publications. Pancreas-related topics led in terms of publication number and IF generated per individual publication. Conclusion A significant difference in publication performance of individual departments was apparent that cannot be explained by staff number. This indicates that there are as yet unknown factors responsible for minor publication activity in many university departments.

scholarly journals Reproductive Performance Following Hysteroscopic Surgery for Uterine Septum: Results from a Single Surgeon Data

2021 ◽  
Vol 10 (1) ◽  
pp. 130
Author(s):  
Ertan Saridogan ◽  
Mona Salman ◽  
Lerzan Sinem Direk ◽  
Ali Alchami
Keyword(s):  
Reproductive Performance ◽  
Observational Studies ◽  
Patient Characteristics ◽  
Reproductive Outcomes ◽  
Hysteroscopic Surgery ◽  
High Quality Evidence ◽  
Study Results ◽  
Significant Difference ◽  
Uterine Septum

Uterine septum can negatively affect reproductive outcomes in women. Based on evidence from retrospective observational studies, hysteroscopic incision has been considered a solution to improve reproductive performance, however there has been recent controversy on the need for surgery for uterine septum. High quality evidence from prospective studies is still lacking, and until it is available, experts are encouraged to publish their data. We are therefore presenting our data that involves analysis of the patient characteristics, surgical approach and long-term reproductive outcomes of women who received treatment for uterine septum under the care of a single surgeon. This includes all women (99) who underwent hysteroscopic surgery for uterine septum between January 2001 and December 2019. Of those 99 women treated for intrauterine septum who were trying to conceive, 91.4% (64/70) achieved pregnancy, 78.6% (55/70) had live births and 8.6% (6/70) had miscarriages. No statistically significant difference was found in the live birth rates when data was analyzed in subgroups based on age, reason for referral/aetiology and severity of pathology. Our study results support the view that surgical treatment of uterine septa is beneficial in improving reproductive outcomes.

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