Уточнить поиск
Результаты 591-600 из 668
Effects of genetic and non-genetic factors on growth traits of high yielding dairy seed calves and genetic parameter estimates Полный текст
2015
Syed Mohammad Ashiqur Rahman | Mohammad Shamsul Alam Bhuiyan | Abul Kashem Fazlul Haque Bhuiyan
The study was conducted to know the effects of several genetic and non-genetic factors like season, sex, year of birth, genotype of calves and milk yield of dam associated with growth performance of crossbred calves. Data were collected from registered farmers during the period of May, 2011 to April, 2013. Birth weight, three-month weight, six-month weight, weaning weight and heritability estimates of those growth performances were performed using a total of 82 registered calves which had pedigree information having the genotypes of 25% Local - 75% Friesian and 37.5% Local - 62.5% Friesian. The average birth, three-month, six-month and weaning weight of calves were 29.33, 64.32, 99.06 and 151.77 kg, respectively. The effects of non-genetic factors like sex, season of birth and genotype were non-significant (P>0.05) for the traits birth weight, three-month, six-month, weaning weight and average daily gain of calves. However, year of birth was found significant on birth (P<0.01), three-month and six-month (P<0.05) weight; but non-significant (P>0.05) on weaning weight and average daily gain of calves. The heritability estimates were 0.40±0.09, 0.46±0.08, 0.39±0.12 and 0.50±0.12 for the traits birth weight, three-month weight, six-month weight and weaning weight, respectively. Estimated heritabilities of live weights suggest that individual own performance basis selection would be more effective for increasing growth and therefore, should be paid more emphasis in cattle improvement program.
Показать больше [+] Меньше [-]Caspases: An apoptosis mediator Полный текст
2015
Tapan Kumar Palai | Smruti Ranjan Mishra
The process of programmed cell death, or apoptosis, is generally characterized by distinct morphological characteristics and energy - dependent biochemical mechanisms. Apoptosis is a widely conserved phenomenon helping many processes, including normal cell turnover, proper development and functioning of the immune system, hormone dependent atrophy etc. Inappropriate apoptosis (either low level or high level) leads to many developmental abnormalities like, neurodegenerative diseases, ischemic damage, autoimmune disorders and many types of cancer. To use cells for therapeutic purposes through generating cell lines, it is critical to study the cell cycle machinery and signalling pathways that controls cell death and apoptosis. Apoptotic pathways provide a fundamental protective mechanism that decreases cellular sensitivity to damaging events and allow proper developmental process in multi-cellular organisms. Major mediator of apoptosis is a family of proteins known as caspases. There are mainly fourteen types of caspases but out of them only ten caspasese have got essential role in controlling the process of apoptosis. These ten caspases have been categorized into either initiator caspases (caspase 2, 8, 9, 10) or executioner caspases (caspase 3, 6, 7). Although various types of caspases have been identified so far, the exact mechanisms of action of these groups of proteins is still to be fully understood. The aim of this review is to provide a detail overview of role of different caspases in regulating the process of apoptosis.
Показать больше [+] Меньше [-]A review of sheep pox and goat pox: perspective of their control and eradication in Iran Полный текст
2015
Kamran Mirzaie | Seyed Mohammad Barani | Saied Bokaie
Sheep pox and goat pox (SGP) of small ruminants are most severing pox diseases of domestic animals, and they have a very important role in agricultural economy. Thereby, SGP are included in the notifiable diseases of Office International des Epizooties (OIE). Time and place distributions of these diseases are relatively stable worldwide. Transportation of infected animals could spread these viruses to the new areas. In most countries in which capripox are enzootic, vaccination and bio-security are the only two main control measures. SGP control programs have been commenced about 50 years ago in Iran, and there is a good situation for eradication of it. In this review, readers can find latest information in some essential aspects of etiology, distribution, transmission, and control of the diseases. Besides, current situation of the disease in Iran has been described, which perhaps are similar to the other endemic areas in the world.
Показать больше [+] Меньше [-]Seroprevalence of Japanese encephalitis virus using competitive enzyme linked immunosorbent assay (C-ELISA) in pigs in East Sumba, Indonesia Полный текст
2015
Annytha Detha | Diana A. Wuri | Ketut Santhia
Japanese Encephalitis (JE), a vector-borne zoonotic viral disease, is mostly prevalent in Asian countries. The objective of this study was to investigate the occurence of JE virus (JEV) among pigs in East Sumba, Indonesia. Blood samples (n=52) were randomly collected from 52 apparantly healthy pigs where pig population was high in East Sumba. The samples were subjected for seroprevalence study for the presence of antibodies against JEV using competitive enzyme linked immunosorbent assay (C-ELISA). Results showed that 53% (n=28/52) blood samples from the pigs contained antibodies against JEV. This finding is suggestive that the JEV is circulating among pig population in East Sumba, Indonesia. The data may help in designing control strategies of the JEV in the East Sumba, Indonesia.
Показать больше [+] Меньше [-]Prevalence of gastrointestinal parasitism of cattle in Banskhali upazilla, Chittagong, Bangladesh Полный текст
2015
Rokeya Ahmed | Paritosh Kumar Biswas | Mukti Barua | Md. Abdul Alim | Kamrul Islam | Md. Zohorul Islam
The objectives of this study were to investigate the prevalence of gastrointestinal parasitism (GP), and to determine the effects of age, sex, breed, body score and body weight in the occurrences of GP of cattle in Banskhali Upazilla, Chittagong, Bangladesh. A total of 50 fecal samples were randomly collected directly from rectum of cattle. The samples were examined by routine coproscopical methods for the presence of different parasites and oocysts. Overall prevalence of GP infestation was 72% (n=36/50). Prevalence of Paramphistomum spp. infestation was found to be the highest (30%; n=15/50) followed by Toxocara spp. (12%; n=6/50), Fasciola spp. (10%; n=5/50), Oesophagostomum spp. (8%; n=4/50), Moniezia spp. (6%; n=3/50) and Trichostrongylus spp. (2%; n=1/50). Young cattle were mostly infested as compared to adult and calf. The results of this study provides an epidemiological forecast showing the prevalence of GP in cattle, which can be helpful for the clinician in diagnosis of such infections.
Показать больше [+] Меньше [-]Experimental intraocular infection of exotic cockerels with field strain of velogenic Newcastle disease virus in Nigeria Полный текст
2015
Samaila Jonathan Badau | Shehu Usman Hassan | Abdul-Dahiru El-Yuguda | Ikechukwu Onyebuchi Igbokwe
Experimental intraocular (conjunctival) infection of exotic cockerels with a new field strain of viscerotropic velogenic Newcastle Disease Virus (NDV) was conducted to explore the concurrence of some pathological changes with humoral immune responses. After the NDV infection of 4-week-old cockerels, pathologic changes and antibody responses were observed. The clinical signs observed after the artificial inoculation included inappetence, depression, diarrhea, dyspnea, wing and leg paralysis, torticollis and weight loss. Morbidity due to the NDV was 100%, but mortality was 80% by day 18-21 post-infection. Early hyperthermia followed by terminal hypothermia, decreased packed cell volume (PCV), and 231.4 folds peak-antibody response were observed. Necrotic and/or inflammatory lesions were present in the proventriculus, intestine, liver, spleen, kidney and brain. Neurologic and digestive tract perturbations occurred in 10% and 85% of cases, respectively. The disease consistently caused stunted growth, decreased PCV, and necro-inflammatroy lesions concurrent with antibody response, suggesting probable involvement of immune-mediated mechanisms and cell membrane desialylation by viral neuraminidase in the pathogenesis.
Показать больше [+] Меньше [-]Confirmation of acute nitrate poisoning differentiating from anthrax in three Indian indigenous cattle Полный текст
2015
Kumaresan Nagarajan | Jayaraman Selvaraj | Govindan Balakrishnan | Kaliyaperumal Manimaran | Krishnan Padmanath | Namakkal Rajamanickam Senthil | Roy Parimal
This article reports cases of nitrate poisoning in Indian indigenous cattle breeds comprising two Gir cows aging 4 years each, and one Barugur cow at 1.5 years of age. The cattle with case history of sudden death and oozing of partially clotted blood from the anal opening were brought to the Central University Laboratory (CUL), Center for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS) for diagnostic investigation with a suspicion of anthrax. According to anamnesis, all the animals were clinically normal and did not reveal any abnormality on the previous day. The animals were fed with recently harvested sorghum leaves and stalks. Smears examined for anthrax were found negative. Biological test (mice inoculation) for anthrax was also negative. Gross lesions on necropsy examination of the carcases were suggestive of nitrate intoxication. Finally, nitrate intoxication of these cattle was confirmed by chemical and toxicological analysis of fodder, rumen content, aqueous humor, liver, kidney and urine.
Показать больше [+] Меньше [-]Chemical composition and microbial loads of chicken table eggs from retail markets in urban settings of Eastern Ethiopia Полный текст
2015
Ewonetu Kebede Senbeta | Negasi Ameha Zeleke | Yitbarek Getachew Molla
For the determination of microbial load, chemical quality, pH and cholesterol level, a total of 400 table eggs were randomly collected from 10 retailers situated at major urban settings in Eastern Ethiopia and Haramaya University Poultry Farm, Ethiopia. The data were analyzed using SAS. High moisture and cholesterol levels and low pH and huge microbial load were detected in the eggs. Exposure of eggs to sunlight in the market and transportation of eggs from farm to the retail market might influence in lowering moisture and increasing pH. Huge microbial contamination of eggs from retailers at urban settings could be due to unhygienic handling of the eggs, lack of standard storage and transportation facilities. Storing of eggs in refrigeration condition and protection of direct sun light could be helpful in maintaining quality eggs. Introduction of refrigeration systems and construction of shades in markets are suggested to maintain and improve quality of eggs sold in markets.
Показать больше [+] Меньше [-]Detection of multidrug resistance Aeromonas hydrophila in farm raised fresh water prawns Полный текст
2015
Md. Bakhtiar Lijon | Mst. Mousumi Khatun | Ariful Islam | Mst. Minara Khatun | Md. Ariful Islam
This study was undertaken for isolation, identification and determination of antibiogram profile of Aeromonas hydrophila in farm raised fresh water prawn (Macrobrachium rosenbergii) on five commercial ghers. Fresh water prawns (n=25) were collected from five ghers located at Satkhira, Bagerhat and Khulna districts of Bangladesh. Brain (n=25), muscle (n=25) and intestine (n=25) samples were collected aseptically from fresh water prawn and inoculated into alkaline peptone (APW) water for enrichment at 37℃ for 8 h. Enriched cultured was streaked into Thiosulfate Citrate Bile Salt Sucrose (TCBS) agar to isolate bacteria. Bacteria were identified by cultural, Gram staining, biochemical properties and polymerase chain reaction (PCR) assay. The antibiogram profiles of bacteria were investigated against 5 commonly used antibiotics (Gentamicin, Cefalexin, Ampicillin, Azithromycin and Ciprofloxacin) by disc diffusion method. Thirteen A. hydrophila isolates were identified and the prevalence of the A. hydrophila in fresh water prawn was 17.33%. All 13 (100%) isolates were sensitive to Ciprofloxacin, Gentamicin, Azithromycin and resistant to Ampicillin and Cefalexin. The results of this study indicate that farm raised fresh water prawn harbor multidrug resistant A. hydrophila which might causes public health problem if enter into human food chain.
Показать больше [+] Меньше [-]Evaluation of certain crop residues for carbohydrate and protein fractions by cornell net carbohydrate and protein system Полный текст
2015
Venkateswarulu Swarna | Srinivas Kumar Dhulipalla | Raghava Rao Elineni | Narendra Nath Dhulipalla
Four locally available crop residues viz., jowar stover (JS), maize stover (MS), red gram straw (RGS) and black gram straw (BGS) were evaluated for carbohydrate and protein fractions using Cornell Net Carbohydrate and Protein (CNCP) system. Lignin (% NDF) was higher in legume straws as compared to cereal stovers while Non-structural carbohydrates (NSC) (% DM) followed the reverse trend. The carbohydrate fractions A and B1 were higher in BGS while B2 was higher in MS as compared to other crop residues. The unavailable cell wall fraction (C) was higher in legume straws when compared to cereal stovers. Among protein fractions, B1 was higher in legume straws when compared to cereal stovers while B2 was higher in cereal stovers as compared to legume straws. Fraction B3 largely, bypass protein was highest in MS as compared to other crop residues. Acid detergent insoluble crude protein (ADICP) (% CP) or unavailable protein fraction C was lowest in MS and highest in BGS. It is concluded that MS is superior in nutritional value for feeding ruminants as compared to other crop residues.
Показать больше [+] Меньше [-]