Fertility,mortality, milk output,and body thermoregulation of growing Hy-Plus rabbits fed on diets supplemented with multi-enzymes preparation     

Hany M. Gado  Ahmed E. Kholif  Abdelfattah Z. M. Salem  Mona M. M. Elghandour  Oluwarotimi A. Olafadehan  Maricela A. Martinez  Ahmed Q. Al-Momani 《Tropical animal health and production》2016,48(7):1375-1380

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Pathological and biochemical studies on experimental hypothyroidism in growing lambs     

Sokkar SM  Soror AH  Ahmed YF  Ezzo OH  Hamouda MA 《Journal of veterinary medicine. B, Infectious diseases and veterinary public health》2000,47(9):641-652

Secondary iodine deficiency was experimentally produced in growing male lambs by oral administration of 50 mg/kg bodyweight of Thiourea daily for 3.5 months. At the end of the experiment the animals became weak, emaciated, anaemic, significantly reduced in body weight with facial oedema and alopecia at thigh, legs and abdomen. The clinical analysis showed significant reduction in erythrocyte and leucocyte numbers and in levels of triiodothyronine and testosterone at the end of the experiment. The histopathological picture of the thyroid gland revealed hyperplasia of the follicle-lining epithelial cells which project into the lumen. The lumens of the follicles are devoid of colloid. The testes showed ill-developed small, empty seminiferous tubulcs. In the liver, the hepatocytes showed degeneration and vacuolation with proliferation of Kupffer cells, which contain haemosiderin pigment. The kidney showed glomerular lipidosis with accumulation of haemosiderin pigment in the cytoplasm of the renal tubules. Hyperkeratosis of the epidermis associated with excessive keratin formation within the hair follicles was detected. In conclusion, deficiency of iodine causes hypothyroidism which leads to retardation of growth, reduced wool production and interferes with sexual maturity of growing male lambs.  相似文献   

At least two genetically distinct large Babesia species infective to sheep and goats in China   总被引：3，自引：0，他引：3  

Liu AH  Yin H  Guan GQ  Schnittger L  Liu ZJ  Ma ML  Dang ZS  Liu JL  Ren QY  Bai Q  Ahmed JS  Luo JX 《Veterinary parasitology》2007,147(3-4):246-251

A fatal disease of sheep and goats in the northern part of China has been reported to be due to Babesia ovis. However, some characteristics of the causative agent in recent reports are not in accordance with the original attributes ascribed to this parasite. Therefore, the 18S small subunit ribosomal RNA (18S rRNA) genes of a number of Babesia isolates in China were sequenced and compared with that of other Babesia and Theileria species in an attempt to clarify their taxonomic position. In the present study, seven Babesia isolates were collected from distinct areas of northern China, and the 18S rRNA genes were amplified and sequenced. The phylogenetic trees were inferred based on 18S rRNA gene sequences of the Chinese ovine Babesia isolates and some of ovine Babesia and Theileria species available in GenBank. In the phylogenetic tree, Babesia sp. isolates from Madang, Tianzhu, Lintan, Ningxian, Hebei and Liaoning all grouped with B. motasi with 88.2-99.9% identity, while Babesia sp. Xinjiang grouped in a separate clade between B. ovis and B. crassa with 79.7-81.2% identity. The results indicated that there are at least two distinct Babesia species groups-B. motasi and Babesia sp. Xinjiang, the latter was distinctly different from other ovine Babesia isolates from China with less than 86.6% identity.  相似文献   

Induction of proinflammatory cytokines and caspase-1 by leptin in monocyte/macrophages from holstein cows   总被引：3，自引：0，他引：3  

Ahmed M  Shaban Z  Yamaji D  Okamatsu-Ogura Y  Soliman M  Abd Eldaim M  Ishioka K  Makondo K  Saito M  Kimura K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2007,69(5):509-514

The proliferation of peripheral blood mononuclear cells (PBMC) containing both monocyte/macrophages and T lymphocytes increased after treatment with T-cell mitogen (concanavalin A: Con A). PBMC treated with either leptin alone or combination of leptin and ConA showed enhanced proliferative activity by 10-40%, compared with those treated with ConA alone. In contrast, isolated T lymphocytes treated with leptin and ConA showed lowered proliferative activity than the ConA-treated alone, indicating that leptin induced production of some cytokines from monocyte/macrophages, that subsequently resulted in enhancement of T lymphocytes proliferation in PBMC. Among the cytokines examined, monocyte/monocytes constitutively expressed interleukin (IL)-1beta, IL-12p35, IL-18 mRNA, and faintly expressed tumor necrosis factor (TNF)-alpha and IL-12p40 mRNA. Leptin treatment augmented the monocyte/macrophages mRNA expression of only TNF-alpha and IL-12p40 to comparable levels of cells treated with lipopolysaccharide (LPS). However, leptin treatment increased monocyte/macrophages production of IL-1beta as well as TNF-alpha, and induced the mRNA expression of caspase-1, which is shown to mediate the conversion of latent pro-IL-1beta and pro-IL-18 to active forms. These results suggest that leptin directly acts on monocyte/macrophages to produce factors that induce T lymphocytes proliferation such as IL-12p35/p40 complex through IL-12p40 induction and IL-1beta/IL-18 production through caspase-1 induction.  相似文献   

Utilization of industrial waste aqueous ammonia for irrigated forage sorghum production     

Ibrahim A.M. Ahmed  Abdel M.A. Eltilib  Fawzi H.S. Ganawa  Emin B. Erenoglu 《Archives of Agronomy and Soil Science》2016,62(1):93-107

Sorghum is one of the water- and nutrient-use efficient crops raised in dry regions worldwide. A 3 × 3 split-plot experiment in randomized complete block design was conducted to study the effects of petroleum refinery waste aqueous ammonia (NH₃) on irrigated fodder sorghum for two consecutive growing seasons. The main plots consisted of 0 (control), 40, and 80 kg N ha^?1, respectively, and the injection depths (surface 15 cm, and 20 cm depth) were assigned to sub-plots. A significant effect of NH₃ on both fresh and dry biomass production was observed where the highest yield was recorded from the 80 kg N ha^?1 than the control and 40 kg N ha^?1, respectively. Sorghum biomass yield increased most when NH₃ was injected at 20 cm depth as compared to other depths. Biomass nutrient content and nitrogen-use efficiency were increased when 80 kg N ha^?1 was applied as compared to the control. The critical limit of K:(Ca+Mg), above which the tetany risk increases, did not exceed in sorghum biomass by NH₃ fertilization. Results suggested that industrial waste NH₃ equivalent to 80 kg N ha^?1 injected at 20 cm depth can be a sustainable approach to fertilize irrigated sorghum growing as a forage crop.  相似文献   

Layer by layer assembly of nanosilver for high performance cotton fabrics     

Hanan B. Ahmed  Hossam E. Emam 《Fibers and Polymers》2016,17(3):418-426

High performance cellulosic fabrics are of increasing attention as a wearable fabric with special functions. The current report deals with preparation of multifunctional cotton fabrics by using simple and facile layer by layer technique. Firstly, silver nitrate was reacted with carboxymethyl cellulose to prepare Ag nanoparticles-carboxymethyl cellulose composite. Multi-layers of the so-obtained composite were applied on the cotton fabrics using pad-dry-cure method. Ag nanoparticles were deposited with mean size of 18.2 nm onto cotton fabrics which served as a cross linker between carboxymethyl cellulose macromolecules and cotton macromolecular blocks. Application of composite multilayers brought new properties for the finished cloths such like coloration, ultraviolet resistance, electrical resistance and biocidal action. The ultraviolet transmission radiation was significantly reduced to 7-10 % after applying ten composite layers. Valuable antibacterial textiles which are required in different medical purposes could be successfully produced, as excellent antibacterial activities were achieved by using the reported method. The developed process can be easily adapted to the existing textile machinery, making it industrially viable to produce fabric’s versatility.  相似文献   

<Emphasis Type="Italic">Virgibacillus proomii</Emphasis> and <Emphasis Type="Italic">Bacillus mojavensis</Emphasis> as probiotics in sea bass (<Emphasis Type="Italic">Dicentrarchus labrax</Emphasis>) larvae: effects on growth performance and digestive enzyme activities     

Ahlem Hamza  Kais Fdhila  Dora Zouiten  Ahmed Sleheddine Masmoudi 《Fish physiology and biochemistry》2016,42(2):495-507

This study examined the effects of two probiotics (Virgibacillus proomii and Bacillus mojavensis) on the digestive enzyme activity, survival and growth of Dicentrarchus labrax at various ontogenetic stages in three separate experiments. These probiotics were incorporated as single or mixed into fish feed for a period of 60 days. The growth parameters, proximate composition of whole body, digestive enzymes and gut microbiology were monitored at regular. The increments in length and weight and the survival were significantly higher (P < 0.05), and the values of food conversions were significantly lower (P < 0.05) in fishes fed the probiotic. The administration of V. proomii and B. mojavensis in diet resulted in an increase (P > 0.05) in body ash and protein content and in the specific activity of phosphatase alkaline and amylase in the digestive tract of all the fishes. V. proomii and B. mojavensis persisted in the fish intestine and in the feed in high numbers during the feeding period (group 1: 5.8 × 10⁴ CFU/ml, group 2: 9.6 × 10⁴ CFU/ml, and group 3: 9.8 × 10⁴ CFU/ml day 60). The two probiotics V. proomii and B. mojavensis were adequate for improved growth performance and survival and for healthy gut microenvironment of the host.  相似文献   

Biochemical and histochemical studies on the digestive gland of Eobania vermiculata snails treated with carbamate pesticides   总被引：1，自引：0，他引：1  

M.A. Radwan  A.E. Essawy  N.E. Abdelmeguied  S.S. Hamed  A.E. Ahmed 《Pesticide biochemistry and physiology》2008,90(3):154-167

In this study the land snail (Eobania vermiculata), one of the most abundant gastropod of Egyptian farms, was investigated to determine the lethal toxic action of methomyl and methiocarb and to identify the biochemical and histochemical changes as a function of sublethal dose or concentration on the digestive gland of this snail under laboratory conditions, using topical application and baiting techniques. The results showed that methomyl exhibited greater efficacy than did methiocarb against the snails in both techniques. However, higher mortality rates were obtained in the topical application technique than in the poison bait experiments. Biochemical and histochemical examinations revealed that treatment of the snails with methomyl and methiocarb either by topical application or toxic baits caused significant decrease in carbohydrate, lipid and protein contents. This decrease was also more obvious after topical application than after baiting technique, and methomyl was found to be more toxic than methiocarb.  相似文献   

Effect of intercropping, Bradyrhizobium inoculation and N, P fertilizers on yields, physical and chemical quality of cowpea seeds     

Ekhlas M. Musa  Elsiddig A. E. Elsheikh  Isam A. Mohamed Ahmed  Elfadil E. Babiker 《Frontiers of Agriculture in China》2011,5(4):543-551

The present study was aimed to determine the effects of inoculation with Bradyrhizobium strain, intercropping, nitrogen and phosphorus fertilization and their interaction on the yield, physical and chemical properties of cowpea seeds. The results showed that the seed yield of cowpea was significantly (P≤0.05) increased by Bradyrhizobium inoculation, nitrogen and phosphorus fertilizers, but not by intercropping. All treatments of intercropping, P, Bradyrhizobium plus N and Bradyrhizobium plus P treatments significantly (P≤0.05) increased the hydration coefficient and cookability of cowpea seeds compared to untreated plants in both seasons. For chemical composition, all treatments significantly (P≤0.05) increased the dry matter, ash, protein and fiber content of the seeds compared to the untreated plants for the two systems and in both seasons, whereas it significantly (P≤0.05) decreased carbohydrate content of the seeds. Fat content of the seeds was not increased by Bradyrhizobium inoculation and intercropping, but it was significantly increased by nitrogen and phosphorus fertilization. Intercropping, Bradyrhizobium inoculation and nitrogen and phosphorus fertilization significantly (P≤0.05) increased tannin content and in vitro protein digestibility of the seeds compared to untreated plants for both systems and in the two seasons.  相似文献   

Evaluations of shallot genotypes for resistance against fusarium basal rot (Fusarium oxysporum f. sp. cepae) disease     

Assefa Sintayehu  Chemeda FininsaSeid Ahmed  P.K. Sakhuja 《Crop Protection》2011,30(9):1210-1215

Fusarium basal rot (FBR) caused by Fusarium oxysporum f. sp. cepae (Foc) is one of the most significant production constraint to shallot. Field experiment was conducted in a naturally Foc infested soil at Debre Zeit Agricultural Research Center during 2006 and 2007 cropping seasons to evaluate the level of resistance of sixteen shallot genotypes against FBR disease. Treatments were arranged in randomized complete block design with four replications. The genotypes significantly varied in their susceptibility to FBR and yield. They were grouped into tolerant, moderately and highly susceptible types. Five genotypes (DZ-Sht-168-1A, DZ-Sht-157-1B, Huruta, Negelle and DZ-Sht-169-1b) were identified to be tolerant as they had reduced disease severity levels from 26.8 to 32.5% and increased mean yield by more than 5 t ha⁻¹ compared to highly susceptible genotypes (DZ-Sht-076-4, DZ-Sht-201-1C and DZ-Sht-054-3A). Among the tolerant genotypes, DZ-Sht-169-1b had greatly reduced bulb rot incidence by 48% in ground storage and 30% in wire mesh shelf as compared to highly susceptible genotype DZ-Sht-201-1C. The tolerant genotypes have high yielding characteristic, and farmers could adopt them for cultivation where FBR is a problem.  相似文献