scholarly journals Endoparasites in Sows and Selected Reproduction Parameters

2020 ◽  
Vol 70 (1) ◽  
pp. 71-80
Author(s):  
Damian Knecht ◽  
Anna Jankowska-Mąkosa

AbstractThe aim of the study was to analyze infection of sows with endoparasites depending on their physiological phase and length of exploitation, as well as to determine the effects of infection on selected parameters of reproductive performance. 300 fecal samples collected from the same 75 sows in 4 phases of the production cycle (dry sows, low pregnancy, high pregnancy, lactation) were tested in the experiment. Species and gender diversity, prevalence, OPG and EPG were determined in the study. These parameters were compared in terms of the physiological phase and the length of exploitation. Selected parameters of reproductive performance of sows were also examined, which were compared taking into account the length of exploitation and sows infection with individual parasites.The study showed that the entire population was infected with two parasites at all physiological phases: Eimeria spp. (17% prevalence, 2275 OPG) and Ascaris suum (5% prevalence, EPG 79). The presence of parasites from Eimeria genus (prevalence 40%, OPG 2976) in sows exploited for 1 year had a negative effect on some parameters of their reproduction performance. Infected sows, compared to noninfected ones, were characterized by a lower number of live piglets (by 0.21 heads) (p≤0.05), a higher number of stillborn piglets (by 0.21 heads) (p≤0.05), as well as lower daily weight gains of piglets (by 15 g) (p≤0.05), which contributed to their lower weaning body weight (by 0.45 kg) (p≤0.05).

2021 ◽  
Vol 9 (02) ◽  
pp. 2072-2180
Author(s):  
Dai Long Khuc ◽  
Thi Thu Bui ◽  
Quynh Mai Ha

The study was conducted to investigate the relationship between diversification on Board and firm performance. The investigation has been performed using panel data procedure for a sample of 204 Vietnamese listed companies in two different groups: Large cap and Mid cap, listed in HOSE and HNX during the period of five years from 2015 to 2019. The study uses three performance measures (including return on equity, return on asset, Tobin’s Q) as dependent variable. The independent variables for measurement of diversification on Board are the number of females and the diversification for Supervisory Board are the number of females only. Other independent variables are average age of Board member, CEO duality and the number of independent directors. The results indicated that firm performance have positive relationship with nationality diversity on Board and gender diversity on Supervisory Board. CEO duality shows a significant result of negative effect on firm performance.


1984 ◽  
Vol 39 (3) ◽  
pp. 465-472 ◽  
Author(s):  
G. G. Partridge ◽  
S. J. Allan ◽  
M. Findlay ◽  
W. Corrigall

ABSTRACTFour groups of does (16 per group) were remated either 1, 7, 14 or 21 days after parturition over a 1-year production cycle. Doe mortality rate was independent of treatment and overall was 0·27. The remating interval after parturition had no effect on conception rate, which was high on all treatments (0·86 to 0·93). The high overall conception rate resulted in more litters being born as the parturition to remating interval decreased. Expressed on a common 365-day experimental period the number of litters per doe was 8·9, 8·5, 7·8 and 6·7 (average s.e. of difference 0·33) for treatments 1, 7, 14 and 21 respectively. Litter size was not significantly affected by treatment and consequently the number of pups born per doe per year increased as remating interval decreased: 75·0, 73·4, 67·4 and 591 respectively. Pup mortality rate at birth and subsequently was high (0·42) on all treatments and the number of pups weaned per doe per year for treatments 1, 7, 14 and 21 was 48·3, 43·5, 40·0 and 33·3 respectively. Pup birth weight, 21-day litter weight and weaning (25-day) weight were all unaffected by treatment, as was doe body-weight change.


2020 ◽  
Vol 20 (6) ◽  
pp. 1135-1158
Author(s):  
Romilda Mazzotta ◽  
Olga Ferraro

Purpose This study aims to examine the impact of an increasing board diversity on the performance of Italian listed banks for the period 2008–2014, taking into account the effects of the implementation of gender quota laws in Italy. The study also investigates the effects of this potential relationship during the crisis that Italy had to cope with since 2011, as well as the potential impact of female directors and their roles on bank boards. Design/methodology/approach To verify this relationship, the study uses a panel sample of 22 listed banks and applies fixed effects with the Driscoll-Kraay error. Considering the shareholders’ perspective, bank performance (BP) is measured by return on average equity. The robustness of results is verified through return on average assets, Tobin’s Q (a market measure from investors/stakeholders’ perspective) and an alternate estimation model, i.e. GMM. Findings The findings highlight a positive relationship between the performance accounting measures and gender diversity, a non-neutral impact of the presence of female directors on boards and a significant and negative effect on market measures. Research limitations/implications The results of the study, as far as accounting measures are concerned, support managerial and legislative efforts toward more gender-balanced boards and the appointment of female directors in executive or independent roles. As per market measures, the results suggest that the presence of women on boards should be considered advantageous in terms of value, so that the market can finally appreciate diverse bank boards. Originality/value First, previous studies did not provide exhaustive results to document the proposed relationship and did not examine this relationship during a financial crisis. Second, the role of female directors on boards is also taken into account. Third, the study highlighted that BP is a multi-dimensional construct, with accounting and market metrics being its distinct dimensions.


IQTISHODUNA ◽  
2019 ◽  
Vol 15 (2) ◽  
pp. 115-128
Author(s):  
Roika Roika ◽  
Ubud Salim ◽  
Sumiati Sumiati

In implementing corporate governance, the diversity of the board of directors is an essential component. The most frequently observed diversity of the board is gender diversity, and along with the increasing internationalization of business today, the nationalities diversity is also one of the interesting types of analysis to be analyzed. The purpose of this study is to investigate the influence of the diversity of the board of directors on the performance of the company. The company performance examined in this study is the firm financial performance measured by using ROE and firm value measured by the Tobin's Q ratio. The population of this study are all non-financial companies listed on the Indonesia Stock Exchange in 2016-2017. Following the same selection criteria in this study, 33 sample companies were screened. The results of hypothesis testing with multiple regression indicate that only nationalities diversity influences the firm financial performance as measured by ROE. While gender diversity has a negative effect on firm financial performance as measured by ROE. And gender diversity and nationalities diversity does not affect the firm value


2013 ◽  
Author(s):  
Diana Zarb ◽  
Ryan F. Birch ◽  
David Gleave ◽  
Winston Seegobin ◽  
Joel Perez

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