• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 135
  • 73
  • 10
  • 8
  • 5
  • 5
  • 5
  • 5
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 269
  • 82
  • 76
  • 75
  • 56
  • 52
  • 37
  • 31
  • 31
  • 25
  • 25
  • 24
  • 24
  • 24
  • 23
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

PCR-DGGE analysis of microbial communities associated with Campylobacter spp. on equipment surfaces at two pig processing facilities

Tan, Boon-Fei Unknown Date
No description available.
42

Movement Restriction Implications on Potential Welfare Slaughter for Texas High Plains Feedlots

Galli, Monica 2011 December 1900 (has links)
Foot and mouth disease (FMD) is regarded as one of the greatest biological threats to the U.S. livestock industry because of its potential to cause catastrophic economic damages and massive livestock depopulation. Current U.S. contingency plans call for "stamping out" of FMD. An integral component of a "stamping out" policy is movement restrictions. The main purpose for movement restrictions is to stop the spread of disease, but they also disrupt the agribusiness sector. Welfare slaughter, the depopulation of healthy quarantined animals, is a possibility if movement restrictions are kept in place for prolonged periods of time. Many studies have analyzed the economic consequences of alternative mitigation strategies, but generally these studies have ignored the costs that might arise because of movement restrictions affecting uninfected premises located within the quarantine zone. Ultimately this study seeks to improve preparedness in the event of a FMD outbreak. It does this by developing information for those formulating plans on the costs associated with movement restrictions regarding quarantined, uninfected large feedlots located in the Texas High Plains Region. To accomplish this objective two strategies were compared: an unrestricted feed strategy, where feed is allowed to be brought onto uninfected premises and finished cattle are sold; and a welfare slaughter strategy, where feed isn't allowed to be brought onto the uninfected premises so animals are depopulated. In addition, seasonal differences in total costs were examined. This study expanded on the High Plains Study conducted by M. Ward, L. Highfield, P. Vongseng, and M. Garner by using their epidemiological data combined with a cost accounting framework to estimate the total cost of each strategy. This study examined direct disease management costs (indemnity payments, feed costs, marketing costs, surveillance costs, cleaning and disinfecting costs, appraisal cost, euthanasia costs, and disposal costs). Overall, the unrestricted feed strategy was less expensive than the welfare slaughter strategy, costing on average $22.6 million compared to $48.5 million, respectively. Disease outbreak timing did impact the overall cost of both strategies. The results suggest the policy makers should strongly consider creating movement policies that address feed supply and finished cattle movement for uninfected large feedlots in prolonged quarantine zones; as such policies appear to reduce outbreak related costs for stakeholder and the U.S. government.
43

Paukštienos gaminių kokybės analizė / Quality analysis of poultry products

Tumaitis, Tautvydas 18 June 2013 (has links)
Nuolatos augant paukštienos gaminių rinkai bei vis daugiau dėmesio skiriant žmonių sveikatingumui iškyla būtinybė gaminti ne tik konkurencingą bet ir natūralią, kokybišką produkciją. Sprendžiant racionalios žmogaus mitybos problemą, pasirenkant produktų gamybos technologiją, prognozuojant mėsos gaminių kokybę, reikia žinoti mėsos kokybės rodiklius. Darbo tikslas: ištirti paukštienos kokybinius parametrus ir išanalizuoti jų įtaką paukštienos gaminių kokybei. Siekiant šio tikslo reikėjo įgyvendinti šiuos uždavinius: 1. išanalizuoti viščiukų broilerių skerdimo technologinius procesus ir jų įtaką skerdenos kokybei. 2. atlikti paukštienos žaliavos, naudojamos paukštienos produktų gamybai, cheminę analizę ir pH. 3. išanalizuoti paukštienos produktų gamybos technologinius procesus ir jų įtaką paukštienos gaminių kokybei. 4. įvertinti paukštienos gaminių juslines savybes. Atlikus tyrimus nustatėme, kad tirtuose viščiukų krūtinėlėse drėgmė vidutiniškai sudarė 70,26 proc., baltymai – 25,81 proc. ir riebalai 2,12 proc. Viščiukų krūtinėlių raumenų brendimas vyksta be pakytimų ir mėsa po 24 valandų yra pilnai subrendusi. Vištienos kepsnelių cheminė sudėtis kito priklausomai nuo juose esančios krūtinės raumenų bei baltyminių priedų kiekių, jų baltymingumas 8,05 – 13,67 proc., drėgmė 46,94 – 60,11 proc., druska 1,36 – 1,96 proc., riebumas 13,82 – 18,6 proc. / The ever growing market of poultry products and a trend towards a healthy lifestyle forces to not only manufacture competitive products but also natural - products of high quality. Seeking to solve the issues of man's rational nutrition, choosing of manufacture technologies for products, forecasting quality of products the knowledge of meet quality criteria is vital. Aim of this work: investigate quality parameters of poultry and determine their influence on quality of finished poultry products. To achieve this the following had to be done: 1. Investigate broiler slaughter technological processes and determine their influence on the quality of carcass. 2. Conduct a chemical composition analysis on raw poultry used in poultry products and determine its pH. 3. Investigate technological processes of poultry product manufacture and determine their influence on the finished products' quality. 4. Determine sensory characteristics of poultry products. Research results of chicken fillet show that its composition on average 70,26% water, 25,81% proteins and 2,12% fat. Chicken breast meat ripening proceeds without muscle change and in 24h the meat is fully ripe. Chicken steaks' chemical composition varied depending on the amount of muscle tissue and protein additives. Their protein saturation was 8,05 – 13,67%, moisture 46,94 – 60,1%, salt 1,36 – 1,96%, fat 13,82 – 18,6%.
44

Factors involved in the development of boar taint : influence of breed, age, diet and raising conditions /

Zamaratskaia, Galia, January 2004 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2004. / Härtill 6 uppsatser.
45

Factors associated with the occurrence of ecchymosis (blood splash) in fallow deer (dama dama) /

Falepau, David Fa'a. January 1999 (has links)
Thesis (Ph.D.) -- University of Western Sydney, Hawkesbury, 1999. / Thesis submitted for the degree of Doctor of Philosophy. Includes bibliographical references (leaves 257-262).
46

Antimicrobial drug resistance of enteric bacteria from broilers fed antimicrobial growth enhancers and exposed poultry abattoir workers

Oguttu, James Wabwire. January 2008 (has links)
Thesis (MSc (Paraclinical Sciences))--University of Pretoria, 2007. / Includes bibliographical references. Also available in print format.
47

Validation of a 2% lactic acid antimicrobial rinse as an alternative to chlorine for mobile poultry slaughter operations

Kannan, Aditi. January 2009 (has links) (PDF)
Thesis (M.S. in food science)--Washington State University, May 2009. / Title from PDF title page (viewed on May 27, 2009). "School of Food Science." Includes bibliographical references.
48

Schlachtungsgebräuche im alten Ägypten und ihre Wiedergabe im Flachbild bis zum Ende des Mittleren Reiches

Eggebrecht, Arne. January 1973 (has links)
Thesis--Munich, 1966. / Includes bibliographical references.
49

Meat packing plant effluent as an irrigation medium

Vollbrecht, Howard Albert, January 1959 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1959. / Typescript. Abstracted in Dissertation abstracts, v. 20 (1959) no. 3, p. 824. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 102-105).
50

Desenvolvimento de padrões para avaliação e classificação comercial de carcaças ovinas

Ricardo, Hélio de Almeida [UNESP] 12 August 2011 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:32:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-08-12Bitstream added on 2014-06-13T21:05:25Z : No. of bitstreams: 1 ricardo_ha_dr_botfmvz.pdf: 511383 bytes, checksum: c1c678a5f609d7e8b161335091d3395e (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Universidade Estadual Paulista (UNESP) / Noventa e seis ovinos foram agrupados em cinco classes de Tipo Ovino (TO): TO1 – cordeiros com peso de abate (PA) até 30 kg (n=16); TO2 – cordeiros com PA entre 30 e 35 kg (n=20); TO3 – cordeiros com PA entre 35 e 40 kg (n=22); TO4 – cordeiros com PA acima de 40 kg (n=23); TO5 – ovino com pelo menos um par de dentes incisivos permanentes (n=15). Foi avaliado o efeito do TO sobre o PA, escore de condição corporal (ECC), caracaterísticas da carcaça e morfometria. As carcaças também foram avaliadas pelo sistema EUROP de classificação. Houve influência do TO sobre o PA, com maior valor para o TO5, sendo que esta classe não se diferenciou do TO4, enquanto que o ECC não se diferenciou entre os TO. Não houve diferença para o peso de carcaça quente (PCQ) e de carcaça fria (PCF) entre o TO5 e TO4, que apresentaram os maiores valores, sendo que o TO1 e TO2 não se diferenciaram quanto ao PCQ mas apresentaram diferença para PCF. A maior perda de peso no resfriamento (PPR) foi observada para as carcaças do TO1 enquanto que o TO3 foi a classe que perdeu menos peso. Os maiores valores para o comprimento externo da carcaça (CEC) foram obtidos para o TO4 e TO5, sendo que o TO5 apresentou a maior largura e perímetro da garupa (LG e PG), e largura e profundidade do tórax (LT e PT) dentre os TO. Não houve diferença para o perímetro da perna (PP) entre TO4 e TO5, com o TO1 apresentando o menor valor para esta medida morfométrica. Pelo sistema EUROP, 54% das carcaças pesadas apresentaram classe de conformação boa e somente uma carcaça foi classificada com classe de conformação excelente. Para as classes de camada de gordura, nenhuma carcaça obteve as classes 4 e 5, apenas 9% das carcaças de ovinos com menos de doze meses de idade foram classificadas com classe de camada de gordura 3, enquanto que 43% obtiveram classe 1 e 48% classe 2. Com base na dentição dos animais... / Noventa e seis ovinos foram agrupados em cinco classes de Tipo Ovino (TO): TO1 – cordeiros com peso de abate (PA) até 30 kg (n=16); TO2 – cordeiros com PA entre 30 e 35 kg (n=20); TO3 – cordeiros com PA entre 35 e 40 kg (n=22); TO4 – cordeiros com PA acima de 40 kg (n=23); TO5 – ovino com pelo menos um par de dentes incisivos permanentes (n=15). Foi avaliado o efeito do TO sobre o PA, escore de condição corporal (ECC), caracaterísticas da carcaça e morfometria. As carcaças também foram avaliadas pelo sistema EUROP de classificação. Houve influência do TO sobre o PA, com maior valor para o TO5, sendo que esta classe não se diferenciou do TO4, enquanto que o ECC não se diferenciou entre os TO. Não houve diferença para o peso de carcaça quente (PCQ) e de carcaça fria (PCF) entre o TO5 e TO4, que apresentaram os maiores valores, sendo que o TO1 e TO2 não se diferenciaram quanto ao PCQ mas apresentaram diferença para PCF. A maior perda de peso no resfriamento (PPR) foi observada para as carcaças do TO1 enquanto que o TO3 foi a classe que perdeu menos peso. Os maiores valores para o comprimento externo da carcaça (CEC) foram obtidos para o TO4 e TO5, sendo que o TO5 apresentou a maior largura e perímetro da garupa (LG e PG), e largura e profundidade do tórax (LT e PT) dentre os TO. Não houve diferença para o perímetro da perna (PP) entre TO4 e TO5, com o TO1 apresentando o menor valor para esta medida morfométrica. Pelo sistema EUROP, 54% das carcaças pesadas apresentaram classe de conformação boa e somente uma carcaça foi classificada com classe de conformação excelente. Para as classes de camada de gordura, nenhuma carcaça obteve as classes 4 e 5, apenas 9% das carcaças de ovinos com menos de doze meses de idade foram classificadas com classe de camada de gordura 3, enquanto que 43% obtiveram classe 1 e 48% classe 2. Com base na dentição... (Complete abstract click electronic access below)

Page generated in 0.0416 seconds