Feeding of different levels of metabolite combinations produced by Lactobacillus plantarum on growth performance,fecal microflora,volatile fatty acids and villi height in broilers     

Teck C. LOH  Nguyen T. THANH  Hooi L. FOO  Mohd HAIR‐BEJO  Bin K. AZHAR 《Animal Science Journal》2010,81(2):205-214

The effects of feeding different dosages of metabolite combination of L. plantarum RS5, RI11, RG14 and RG11 strains (Com3456) on the performance of broiler chickens was studied. A total of 504 male Ross broilers were grouped into 7 treatments and offered different diets: (i) standard corn‐soybean based diet (negative control); (ii) standard corn‐soybean based diet +100 ppm neomycin and oxytetracycline (positive control); (iii) standard corn‐soybean based diet + 0.1% metabolite combination of L. plantarum RS5, RI11, RG14 and RG11 strains (Com3456); (iv) standard corn‐soybean based diet + 0.2% of Com3456; (v) standard corn‐soybean based diet + 0.3% of Com3456 (vi) standard corn‐soybean based diet + 0.4% of Com3456 and (vii) standard corn‐soybean based diet + 0.5% of Com3456. Supplementation of Com3456 with different dosages improved growth performance, reduced Enterobacteriaceae and increased lactic acid bacteria count, and increased villi height of small intestine and fecal volatile fatty acid concentration. Treatment with 0.4% and 0.2% Com3456 had the best results, especially in terms of growth performance, feed conversion ratio and villi height among other dosages. However, the dosage of 0.2% was recommended due to its lower concentration yielding a similar effect as 0.4% supplementation. These results indicate that 0.2% is an optimum level to be included in the diets of broiler in order to replace antibiotic growth promoters.  相似文献   

Fabrication of silk fibroin/eggshell nanofiber membranes for facemasks     

Jatoi Abdul Wahab  Gang Xu  Hoik Lee  Phan Duy Nam  Kai Wei  Seong Hun Kim  Ick Soo Kim 《Fibers and Polymers》2016,17(11):1776-1781

We report our study on fabrication of soluble eggshell membrane (SESM) and silk fibroin (SF) nanofibers composite (SF/SESM) for facemasks by electrospinning. Biocompatibility of the SF and SESM, determined from hydrophilicity results, is exploited in SF/SESM nanocomposite for facemask application. The SF/SESM nanocomposites were prepared in different ratios of SF and SESM. The samples were characterized by scanning electron microscopy (SEM), FTIR and water droplet adsorption tests conducted via water contact angle (WCA) and water droplet diffusion. The results revealed that addition of SESM has insignificant effect on the electrospinnability of SF nanofibers in the studied ratios. The SEM results depicted regular morphology of the nanofibers except increase in nanofiber diameter with addition of SESM. The FTIR results confirmed respective peaks of SF and SESM in SF/SESM nanocomposite. WCA of the nanofibers decreased with addition of SESM such that for SF/SESM30, 30 % SESM, it reduced to 0 ° from 101 ° for pure SF nanofibers. The research results demonstrate SF/SESM30 nanocomposite as optimum ratio of SF and SESM for facemasks and other biomedical applications.  相似文献   

Aquaculture and poverty alleviation in Ben Tre Province,Vietnam     

Kim Anh Thi Nguyen  Chuong N.P.T. Bui  Trang T. H. Le 《Aquaculture Economics & Management (Blackwell Science)》2016,20(1):82-108

Research results on the effects of aquaculture on poverty alleviation have been mixed. We use Tobit, simulation models and cross sectional survey data of 285 households, in Ben Tre Province, Vietnam, to evaluate the effects of aquaculture involvement on poverty, measured using per capita consumption of less than $1.25 USD, $1.50, and $2.00 per day. The results show for per capita consumption of less than $1.25 per day that households’ aquaculture participation or productivity had no or little effect on the living standard. For income levels above $1.25 per capita per day aquaculture participation or productivity influenced the standard of living.  相似文献   

Supplemental food for Amblyseius swirskii in the control of thrips: feeding friend or foe?          下载免费PDF全文

Dominiek Vangansbeke  Duc Tung Nguyen  Joachim Audenaert  Ruth Verhoeven  Bruno Gobin  Luc Tirry  Patrick De Clercq 《Pest management science》2016,72(3):466-473

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Comparison of planktonic microbial abundance and dissolved oxygen consumption between the aquaculture ponds of mudskippers and shrimps in the Mekong Delta,southern Vietnam     

Minoru Wada  Fumiaki Mori  Kazuki Yokouchi  Mitsuharu Yagi  Toru Takita  Atsushi Ishimatsu  Mitsunori Iwataki  Kazuya Takahashi  Hieu Van Mai  Toan Thanh Vo  Hung Phuoc Ha  Dinh Dac Tran 《Fisheries Science》2016,82(5):787-797

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Fate of insecticidal Bacillus thuringiensis Cry protein in soil: differences between purified toxin and biopesticide formulation          下载免费PDF全文

Truong Phuc Hung  Le Van Truong  Ngo Dinh Binh  Roger Frutos  Hervé Quiquampoix  Siobhán Staunton 《Pest management science》2016,72(12):2247-2253

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Field trial of praziquantel for control of fishborne zoonotic trematodes in reservoir hosts in Vietnam     

Anh NT  Madsen H  Thanh DT  Dalsgaard A  Murrell KD 《Veterinary parasitology》2010,174(3-4):348-350

This field trial was conducted to determine whether 40 or 75 mg/kg of praziquantel is suitable for treatment of fishborne zoonotic trematodes (FZT) in naturally infected dogs (n=10) and cats (n=11). Three days after treatment all animals at either dose were negative for small trematode eggs. In two cats and one dog treated with 75 mg/kg, however, a few damaged eggs were found 3 days post-treatment; no small trematode eggs were seen in these animals at day 14 post-treatment. In addition, at the 75 mg dose, two cats and two dogs experienced vomiting or diminished appetite. Therefore a praziquantel dose of 40 mg/kg is suggested for treatment of FZT in dogs and cats.  相似文献   

Escherichia coli strains causing edema disease in northern Vietnam share an identical verotoxin 2e   总被引：1，自引：1，他引：0  

Oanh  Thi Kim Nguyen  Nguyen  Viet Khong  Do  Thuy Ngoc  Goddeeris  Bruno Maria  De Greve  Henri 《Tropical animal health and production》2010,42(8):1797-1804

Edema disease (ED) is a common fatal disease in newly weaned piglets. To develop an effective control program for ED, we carried out a study to better understand the incidence and spread of the disease and the characteristics of the causative agent. In our study, 69 Escherichia coli strains, isolated from 92 piglets showing clinical signs of ED from 13 provinces in northern Vietnam, were positive for both the VT2e toxin and the F18 major fimbrial subunit gene fedA. Of these, 40 strains (58%) were positive for AIDA and 16 isolates carried one or more enterotoxins. Forty-six (67%) of the 69 VT2e⁺/F18⁺ E. coli isolates belonged to classical serotypes (O139:K82, O141: K85, O138:K81, and O149:K91) while the remaining strains did not belong to the common serotypes in pig. Seropathotype 0139:K82⁺/VT2e⁺/F18⁺/AIDA⁺ (21 isolates) was the most frequently detected ED-causing E. coli strain. High prevalence of resistance was observed to the common drugs of tetracycline, streptomycin, trimethoprim/sulfamethoxazole, amoxicillin/clavulanic acid, and spectinomycin. Multiple resistances were widely distributed with 84% of isolates resistant to five antibiotics. Sequence analysis demonstrated that the VT2e toxin is identical among E. coli strains causing ED in pig.  相似文献   

采用遗传学和生理学方法研究家禽福利育种     

S. Avendano  D. A. Emmerson  W. M. Muir  T. Nguyen  W. J. Kuenzel  A. Jurkevich  P. B. Thompson 《中国家禽》2010,32(5)

<正>1遗传育种与家禽福利的关系腿畸形、骨骼缺陷、代谢失调等动物福利性状是育种工作者长期以来重点考虑的问题。这些问题由于其较低的遗传力以及与肉鸡生产性状的负相关性是育种工作的一大挑战。安伟捷公司自20世纪90年代早期就将福利性状囊括在育种目标之内,在骨骼和代谢方面取得了较大的进展。将福  相似文献   

Identification of <Emphasis Type="Italic">Colletotrichum</Emphasis> species associated with anthracnose disease of coffee in Vietnam     

Phuong Thi Hang Nguyen  Olga Vinnere Pettersson  Peter Olsson  Erland Liljeroth 《European journal of plant pathology / European Foundation for Plant Pathology》2010,127(1):73-87

Twenty-three isolates of Colletotrichum gloeosporioides, five isolates of C. acutatum, two isolates of C. capsici and six isolates of C. boninense associated with anthracnose disease on coffee (Coffea spp.) in Vietnam were identified based on morphology and DNA analysis. Phylogenetic analysis of DNA sequences from the internal transcribed spacer region of nuclear rDNA and a portion of mitochondrial small subunit rRNA were concordant and allowed good separation of the taxa. We found several Colletotrichum isolates of unknown species and their taxonomic position remains unresolved. The majority of Vietnamese isolates belonged to C. gloeosporioides and they grouped together with the coffee berry disease (CBD) fungus, C. kahawae. However, C. kahawae could be distinguished from the Vietnamese C. gloeosporioides isolates based on ammonium tartrate utilization, growth rate and pathogenicity. C. gloeosporioides isolates were more pathogenic on detached green berries than isolates of the other species, i.e. C. acutatum, C capsici and C. boninense. Some of the C. gloeosporioides isolates produced slightly sunken lesions on green berries resembling CBD symptoms but it did not destroy the bean. We did not find any evidence of the presence of C. kahawae in Vietnam.  相似文献