scholarly journals Effects of common rice field weeds on the survival, feeding rate and feeding behaviour of the crayfish Procambarus clarkii

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Quan Yuan ◽  
Zhihui Tian ◽  
Weiwei Lv ◽  
Weiwei Huang ◽  
Xiaolin Sun ◽  
...  
Keyword(s):  
Survival Rate ◽  
Feed Intake ◽  
Paddy Field ◽  
Procambarus Clarkii ◽  
The Other ◽  
Interactive Effects ◽  
Feeding Experiment ◽  
Weed Species ◽  
Treatment Groups ◽  
Eclipta Prostrata

AbstractTo check if it is possible for crayfish to reduce the weed biomass in a paddy field, we hypothesised that crayfish can feed on common weeds in a paddy field. The feeding ability of red swamp crayfish, Procambarus clarkii, males and females for 4 weeds, Ludwigia prostrata Roxb., Leptochloa chinensis (L.) Nees, Echinochloa crusgalli (L.) Beauv and Eclipta prostrata L., commonly found in rice–crayfish fields were evaluated using a quantitative feeding experiment and behaviour observation experiment. The results of the quantitative feeding and behaviour experiments were highly consistent. The P. clarkii gender and weed species had no interactive effects on survival rate, the daily feed intake (FI) and percentage of daily feed intake (PFI). The results of the quantitative feeding experiment showed that the FI and PFI values of both P. clarkii females and males were significantly higher in the P. clarkii feed group than in the weed treatment group. Both FI and PFI were significantly higher in the L. chinensis group than in the other treatment groups. The survival rate of P. clarkii was significantly lower in the E. crusgalli group than in the other treatment groups. The behaviour observation experiment showed that the feeding frequency and duration were in the order of L. chinensis > E. prostrata > L. prostrata > E. crusgalli. The results indicate that the P. clarkii specimens liked to eat L. chinensis (mean PFI was more than 2%), hardly fed on E. crusgalli.

scholarly journals Effect of garlic powder (Allium sativum) on growth, dressing parameters, serum biochemical contents and profitability of broiler

2018 ◽  
Vol 46 (4) ◽  
pp. 215-224
Author(s):  
MB Karim ◽  
ME Hossain ◽  
MS Ali ◽  
A Hossain
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Feed Intake ◽  
Body Weight Gain ◽  
Basal Diet ◽  
The Other ◽  
Feed Additive ◽  
Treatment Groups ◽  
Garlic Powder ◽  
Broiler Diet

This study was conducted to evaluate the effect of garlic an alternative feed additive in broiler diet.  The experiment was carried out for a period of 32 days with a number of 340 day-old straight run broiler chicks. Birds were divided into five dietary treatment groups with 4 replications each having 17 birds. The dietary groups were; control (basal diet; no additives), antibiotic (basal diet + antibiotic), garlic 0.25% (basal diet + 0.25% garlic powder), garlic 0.50% (basal diet + 0.50% garlic powder) and garlic 0.75% (basal diet + 0.75% garlic powder). Results showed that the body weight, body weight gain and total FCR were not differ significantly (P>0.05) among the treatment groups. Total feed intake in different dietary levels showed significant (P<0.05) difference. Control group showed significantly (P<0.05) higher feed intake than the other dietary groups. The results also showed thatthe serum glucose concentration was reduced (P<0.05) in all garlic supplemented groups compared to the control and antibiotic groups. Total cholesterol level was significantly (P<0.05) lower in the 0.75% garlic group compared to the control and antibiotic groups. In case of dressing parameter, 0.75% garlic group showed lowest (P<0.05) abdominal fat compared to the other groups. Cost of production per kg live broiler was lower in antibiotic and control groups compared to the garlic group. With regards to profit, antibiotic groups showed higher profitability than the other groups. It can be concluded that the addition of garlic powder to broiler diet had positive effect on cholesterol and glucose levels and had no effect on feed intake, body weight gain, meat yield, bone development, carcass parameters. It can be suggested that the garlic could be a potential feed additive in broiler diet.Bang. J. Anim. Sci. 2017. 46 (4): 215-224

Studies in sow reproduction 5. The effect of lactation length of the sow on the subsequent embryonic development

1976 ◽  
Vol 22 (1) ◽  
pp. 79-85 ◽  
Author(s):  
M. A. Varley ◽  
D. J. A. Cole
Keyword(s):  
Survival Rate ◽  
The Other ◽  
Plasma Samples ◽  
Progesterone Concentration ◽  
Embryo Survival ◽  
Plasma Progesterone ◽  
Treatment Groups ◽  
Lactation Length ◽  
Sow Reproduction ◽  
Sampling Times

SummaryForty-five female pigs (sows) were allocated at random to one of three lactation lengths: 7 days, 21 days, 42 days. All sows were remated at the first post-weaning oestrus and were slaughtered at 20 days post coitum. The reproductive tracts were removed, dissected and examined. Ovulation rates as determined by luteal count were similar for all three groups, but the number of viable embryos decreased significantly (P < 0·05) from 13·0 for the 42-day lactation group to 9·2 for the 7-day lactation group. This difference was reflected in a significant (P < 0·01) reduction in the percentage embryo survival rate as lactation length was reduced. Uterine lengths for the 7-day lactation group were significantly (P < 0·05) shorter than the other two groups. Six sows in each treatment group were blood sampled: at weaning, at remating, at 2 days post-mating, at 10 days post-mating and at 20 days post-mating. The plasma samples obtained were assayed for progesterone. No differences were observed between treatment groups for plasma progesterone concentration at any of the sampling times. It is concluded that the reduction of the litter size at the next farrowing following a short lactation length is largely a result of increased embryo death in the first 20 days of gestation.

scholarly journals Effect of dietary Halquinol supplementation on the productive performances, carcass traits and blood profile of Sonali chicken

2020 ◽  
Vol 5 (4) ◽  
pp. 316-323 ◽  
Author(s):  
Md Ahsan Habib ◽  
Md Anowarul Haque ◽  
Md Saiful Islam ◽  
Md Ruknuzzaman Liton
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Feed Intake ◽  
Body Weight Gain ◽  
Hematological Parameters ◽  
Dietary Treatment ◽  
The Other ◽  
Control Group ◽  
Blood Profile ◽  
Treatment Groups

This study was conducted to evaluate the efficacy of dietary supplementation of Halquinol on productive performances, carcass characteristics and hematological parameters of Sonali chicken. A total number of 72 Sonali chicks of 07 days old were divided randomly into 04 experimental groups occupying 03 replications in each groups among which four dietary groups were considered i.e. control group (T0), Halquinol @ 0.25g/ kg feed in group (T1); Halquinol @ 0.5g/ kg feed in group (T2); and Halquinol @ 1g/ kg feed in group (T3) respectively. Results indicated that body weight and body weight gain were increased significantly (P<0.05) in birds supplied with Halquinol @ 1g/ kg feed group (T3) compared to the other groups. Higher (P<0.05) feed intake and better (P<0.05) FE were also observed in group T3 compared to the other groups. This result also indicated that body weight, body weight gain, feed intake, and feed efficiency were increased along with increasing dose of Halquinol. No significant (P>0.05) differences were found in dressing percentage, liver, heart and gizzard among the dietary treatment groups. However, the dressing weight, breast meat, thigh meat, and head weight was significantly (p<0.05) higher in birds supplied with Halquinol @ 1g/ kg feed group (T3) compare to control (T0) group. Present study revealed that hematological parameters, including Hb, PCV and ESR value of the birds of different groups does not differ significantly among the groups and it was within the normal range. Cost effective analysis of the experiment demonstrated that by using Halquinol @ 1g/ kg feed significantly (P<0.05) higher net profit than other dietary treatment groups and also highest profit over control (14.95Tk.). Based on the results of present study it may be suggested that supplementation of Halquinol can be used as a commercial growth promoter for the production of Sonali chicken. Asian J. Med. Biol. Res. June 2019, 5(4): 316-323

The effect of changes in feed intake around the time of insemination on systemic progesterone and embryo development and survival in cattle.

2001 ◽  
Vol 26 (2) ◽  
pp. 381-384
Author(s):  
L.D. Dunne ◽  
M.G. Diskin ◽  
M.P. Boland ◽  
K.J. O'Farrell ◽  
J.M. Sreenan
Keyword(s):  
Survival Rate ◽  
Embryo Development ◽  
Feed Intake ◽  
Cell Number ◽  
Early Embryo ◽  
Total Protein Content ◽  
Embryo Survival ◽  
Treatment Groups ◽  
Embryo Recovery ◽  
Significant Difference

AbstractEarly embryo loss is the major cause of reproductive failure in cattle. The objective of this study was to investigate the effect of changes in feed intake around the time of insemination on systemic progesterone and on embryo development and survival and in cattle. Nutrition treatments were designed to provide 0.8 times (Low, L) or twice (High, H) maintenance energy requirements. Oestrus was synchronised in heifers (n=314) using two injections of prostaglandin (PG; 50 μg Cloprostenol, Estrumate) administered 10 days apart. On the day of oestrus following the first PG injection, heifers were randomly allocated to L or H (pre-AI). At the oestrus following the second PG injection, heifers were inseminated with semen from the same Limousin bull and on the following day were randomly allocated to either L or H until embryo recovery at day 8 (n=25), 14 (n=57) or 16 (n=71) or pregnancy diagnosis at day 30 (n=161). Hence there were four nutrition treatments; L-L, L-H, H-H and H-L. There was no significant difference in embryo survival rate determined at day 14, 16 or 30 and so the data were combined for analysis. Overall embryo survival rate was significantly lower (P<0.001) in H-L (0.37) than L-L (0.70), L-H (0.71; P<0.001) or H-H (0.68; P<0.01) treatment groups. Nutrition treatment did not affect systemic progesterone measured on days 4, 5, 6 or 7 of the pre- or post-AI oestrous cycle. The total cell number of 8-day-old blastocysts was not significantly affected by nutrition treatment neither was the length, diameter or estimated total protein content of 14-day-old embryos. Reducing energy intake immediately after AI reduced embryo survival rate but there was no evidence that this effect was mediated through changes in systemic progesterone.

Audit Committee Effectiveness Among Malaysian Listed Companies

2020 ◽  
Author(s):  
Shamsul Nahar Abdullah ◽  
Ku Nor Izah Ku Ismail
Keyword(s):  
Corporate Governance ◽  
Audit Committee ◽  
Stock Exchange ◽  
Listed Companies ◽  
The Other ◽  
Interactive Effects ◽  
Committee Chairman ◽  
Kuala Lumpur ◽  
Political Costs ◽  
Leadership Structure

This study investigates further the previous paper by Shamsul Nahar and Al-Murisi (1997) by examining the interactive effects of the variables in that paper and introducing other variables associated with corporate governance and political costs. The present study postulated that percentage of external directors on audit committee interacted with the presence of an accountant on audit committee and with the number of years an audit committee in existence, respectively, to influence audit committee effectiveness. The study also posited that the interaction of the presence of an accountant on audit committee and the number of years an audit committee in existence positively and significantly influenced audit committee effectiveness. Addition. ally, the roles of leadership structure, audit committee chairman, and a firm's size on audit committee effectiveness were also investigated. Using a multiple regression from a sample consisting the Kuala Lumpur Stock Exchange listed companies, results showed that only a firm's size significantly influenced audit committee effectiveness in the predicted direction. Other variables, on the other hand, did not show any significant influence on audit committee effectiveness.  

scholarly journals Dental pulp stem cells overexpressing hepatocyte growth factor facilitate the repair of DSS-induced ulcerative colitis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ning Li ◽  
Yichi Zhang ◽  
Narayan Nepal ◽  
Guoqing Li ◽  
Ningning Yang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Ulcerative Colitis ◽  
Body Weight ◽  
Stem Cell ◽  
Dental Pulp ◽  
The Other ◽  
Therapeutic Effects ◽  
Colon Injury ◽  
Treatment Groups ◽  
Hepatocyte Growth

Abstract Background Ulcerative colitis (UC) is a chronic and recurrent disease without satisfactory treatment strategies. Dental pulp stem cell (DPSC) transplantation has been proposed as a potential therapy for UC. This study aimed to investigate the therapeutic effects of the rat hepatocyte growth factor (HGF) gene transduced into DPSCs for UC. Methods The therapeutic effects of HGF-DPSCs transplanted intravenously into a rat model of UC induced by 5% dextran sulphate sodium (DSS) were compared with the other treatment groups (LV-HGF group, DPSCs group and GFP-DPSCs group). Immunofluorescence and immunohistochemistry were used to observe the localization and proliferation of HGF-DPSCs at the site of colon injury. The expression levels of inflammatory factors were detected by real-time quantitative PCR (RT-PCR) and western blotting. The oxidative stress markers were detected by ELISA. DAI scores and body weight changes were used to macroscopically evaluate the treatment of rats in each group. Results Immunofluorescence and immunohistochemistry assays showed that HGF-DPSCs homed to colon injury sites and colocalized with intestinal stem cell (ISC) markers (Bmi1, Musashi1 and Sox9) and significantly promoted protein expression (Bmi1, Musashi1, Sox9 and PCNA). Anti-inflammatory cytokine (TGF-β and IL-10) expression was the highest in the HGF-DPSCs group compared with the other treatment groups, while the expression of pro-inflammatory cytokines (TNF-α and INF-γ) was the lowest. Additionally, the oxidative stress response results showed that malondialdehyde (MDA) and myeloperoxidase (MPO) expression decreased while superoxide dismutase (SOD) expression increased, especially in the HGF-DPSCs group. The DAI scores showed a downward trend with time in the five treatment groups, whereas body weight increased, and the changes were most prominent in the HGF-DPSCs group. Conclusions The study indicated that HGF-DPSCs can alleviate injuries to the intestinal mucosa by transdifferentiating into ISC-like cells, promoting ISC-like cell proliferation, suppressing inflammatory responses and reducing oxidative stress damage, which provides new ideas for the clinical treatment of UC.

Reproductive performance of group-synchronized Merino d'Arles and Romanov crossbred ewes. 1. A note on the effects of lactation on fecundity

1977 ◽  
Vol 24 (1) ◽  
pp. 113-116 ◽  
Author(s):  
F. J. Galindez ◽  
M. Prud'hon ◽  
G. Reboul
Keyword(s):  
Treatment Group ◽  
Reproductive Performance ◽  
The Other ◽  
Fertility Level ◽  
Homogeneous Groups ◽  
Treatment Groups ◽  
Significant Superiority

SUMMARYFifty-six Merino d'Aries and 56 Romanov × Merino crossbred lactating ewes were divided into two treatment groups, one (T1) with a ewe-to-ram ratio of 48: 1 (24 Merino and 24 crossbred) and the other (T2) of 64: 1 (32 Merino and 32 crossbred).Intravaginal sponges with 40 mg FGA (Searle) were inserted in two subgroups at 8-day intervals and withdrawn after 12 and 16 days in situ, in four equal groups at 4-day intervals. A dose of 400 IU pregnant mare's serum gonadotrophin (PMSG) was applied at sponge withdrawal.Fertility after two oestrous cycles was equally satisfactory in both treatments, though it was lower in treatment group T2. This could be due to the significantly low (P<0·01) number of Merino ewes raddled by the T2 ram (0·33 Merino against 0·92 crossbred) suggesting preferential behaviour by the ram in this treatment.Comparisons between breeds show a slight superiority in the fertility of crossbred ewes and a highly significant superiority in prolificacy These results suggest that using the described method, 2% of rams seems more than adequate to mate with progestagen-synchronized ewes with a satisfactory fertility level. It is, however, recommended to use homogeneous groups of ewes.

Acute toxicity and accumulation of microcystin-leucine-arginine in the crayfish Procambarus clarkii (Girard, 1852)

Crustaceana ◽  
2015 ◽  
Vol 88 (4) ◽  
pp. 397-404 ◽  
Author(s):  
Zhenhua An ◽  
Zhenhua An ◽  
Longsheng Sun ◽  
Zhenhua An ◽  
Longsheng Sun ◽  
...  
Keyword(s):  
Survival Rate ◽  
Acute Toxicity ◽  
Procambarus Clarkii ◽  
Abdominal Muscle ◽  
Water Bodies ◽  
Lethal Concentration ◽  
Median Lethal Concentration ◽  
Toxicity Effect ◽  
Cyanobacteria Blooms

The aim of this study was to determine the acute toxicity effect and the accumulation of microcystin-leucine-arginine (MC-LR) on the crayfish Procambarus clarkii (Girard, 1852). Juvenile P. clarkii (5.47 ± 1.3 g) were cultured under 5 different MC-LR concentrations (0.3, 0.6, 1.2, 2.4, 4.8 mg/l), then the acute toxicity effect was observed. The median lethal concentration (LC50) of MC-LR on juvenile P. clarkii was 3.741 mg/l at 24 h, 1.494 mg/l at 48 h, 0.817 mg/l at 72 h and 0.567 mg/l at 96 h. Accumulation of MC-LR was measured in different organs of mature P. clarkii (58.7 ± 3.8 g) exposed to 0.3 mg/l MC-LR for 120 h. The detected MC-LR concentration decreased in the sequence: hepatopancreas > ovary > abdominal muscle > intestine. Hepatopancreas and ovary were found to be the main targets of the toxin. The results suggested that the MC-LR produced by cyanobacteria blooms could not only reduce the survival rate of juvenile P. clarkii but also affect the fecundity of mature crayfish. This research also provides a reference basis for the detection and assessment of the pollution of water bodies in P. clarkii culture.

scholarly journals Comparative evaluation of effects of different sources of groundnut meals on digestibility, growth performance and economics of production of growing rabbits

2021 ◽  
Vol 41 (1) ◽  
pp. 272-283
Author(s):  
K. T. Orayaga ◽  
P. M. Goholshak
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Feed Intake ◽  
Body Weight Gain ◽  
Control Diet ◽  
Seed Kernel ◽  
Apparent Digestibility ◽  
Final Body Weight ◽  
Treatment Groups ◽  
Groundnut Cake

Three groundnut meals namely: groundnut cake (GNC), locally processed groundnut cake (kulikuli) and toasted groundnut seed(kernel) meal (TGSM) were incorporated in rabbit diets at two levels to generate six diets: 18% GNC, 22% GNC, 18% Kulikuli, 22% Kulikuli, 18% TGSM and 22% TGSM respectively, and 18% GNC also served as the control diet. Twenty four (24) six weeks-old growing rabbits of mixed breeds and sexes with mean initial weight of 568.75±l2.85g were randomly allocated to the six dietary treatment groups, such that each had four rabbits and each rabbit formed a replicate in a completely randomized design laid out in a 2X3 factorial arrangement and fed ad libitum, for 70 days. The main effects showed that while the treatment groups fed TGSM were significantly depressed (p<0.05). rabbits fed GNC and kulikuli were not significantly different (p>0.05) for average daily feed intake, daily body weight gain and final body weight. Feed conversion ratio (FCR) was not significantly (p >0.05) affected among treatment groups. Rabbits fed TGSM had significantly (p<0.05) better apparent digestibility coefficient (78.04%) than those on kulikuli (75.81%6) and the group on kulikuli were better than animals fed GNC (72.09%) for fat digestibility. Fibre digestibility was also significantly different (p <0.05), with rabbits fed kulikuli having the poorest fibre digestion (15.63 %). Crude protein, dry matter and NFE apparent digestibility coefficients were not significantly (p >0.05) affected. Among all the parameters measured, only fat and fibre digestibility coefficients had significant (p <0.05) interactions and NFE digestibility was significantly affected (p <0.05) by level of inclusion, with groups fed 22% digesting it better. Feed cost kg gain did not differ significantly (p >0.05) among the treatment groups. Growth was still on the rise and there was a significantly (P<0.01) strong relationship (correlation and regression) between feed intake and weight gain for all the treatment groups. was concluded that both kulikuli and TGSM are potential feed resources for rabbits, more available to house hold farmers, equally economical as GNC and better still if groundnut farmers and or processors of kulikuli raise rabbits, though TGSM had less value for growth rate compared to GNC and Kulikuli at these levels of inclusion

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