The main objective of this project was to investigate the effects of the type of dried distillers grains with solubles (wheat DDGS, corn DDGS, and blend DDGS (eg. wheat:corn = 70:30)) and bio-ethanol plant origin on the nutrient variation and availability in ruminants. In addition, DDGS products were studied as opposed to their parental grains. The project was divided into the several following studies. In Study 1, we studied the nutritive value of DDGS products in terms of (1) chemical profiles, (2) protein and carbohydrate sub-fractions associated with different degradation rates, and (3) digestible component nutrients and energy values using the NRC 2001-chemical approach and the in situ assay-biological approach. Also, we tested the validity of acid detergent insoluble crude protein (ADICP) and acid detergent lignin (ADL) to predict the potential degradability of DDGS. Due to starch fermentation in the ethanol process, the chemical components in DDGS became approximately threefold more concentrated than in feedstock grains. Slowly degraded protein (PB3) and unavailable protein (PC) increased in DDGS, indicating a decrease in the overall protein degradability in the rumen. Intermediately degraded protein (PB2) was higher for corn DDGS than for wheat DDGS and blend DDGS (54.2 vs. 27.7 vs. 30.8 %CP), while PB3 was higher for wheat DDGS and blend DDGS (29.9 vs. 51.2 vs. 53.2 %CP). Mainly as a result of differing heat conditions, PC differed significantly between wheat DDGS originated at different bio-ethanol plants (0.7 vs. 7.6 %CP). The prediction of truly digestible CP (tdCP) and NDF (tdNDF) differed between the NRC 2001-chemical approach and the in situ assay-biological approach; however, both approaches reported similar energy values. These values were the highest for corn DDGS (DE3X: 3.9 Mcal kg-1), followed by blend DDGS (DE3X: 3.6 Mcal kg-1), and wheat DDGS (DE3X: 3.4 Mcal kg-1). Corn DDGS was superior to corn, wheat DDGS was similar to wheat and corn, and blend DDGS was similar to corn. No significant differences in energy values were reported between bio-ethanol plants. ADICP was not an accurate indicator of the potential degradability of protein in DDGS samples, while ADL seemed to be an acceptable indicator of the potential degradability of DM (r = -0.87; P<0.01), CP (r = -0.89; P<0.01), and NDF (r = -0.82; P<0.01) in wheat DDGS samples incubated in rumen during 48 h.<p> In Study 2, we studied the ruminal and intestinal digestion profiles and the hourly effective rumen degradation ratios between nitrogen (N) and energy. The results showed a reduction in the effective degradability of DM (EDDM), OM (EDOM) and CP (EDCP) of wheat DDGS relative to wheat; however, corn DDGS remained the same as corn. The effective degradability of NDF (EDNDF) did not vary between the DDGS samples and feedstock grains. Among DDGS types, EDDM ranged from 52.4 to 57.7 %, EDOM from 46.4 to 53.5 %DM, and EDCP from 34.0 to 45.6 %CP, being higher as the proportion of wheat in feedstock increased. No significant differences in EDDM, EDOM, EDCP and EDNDF for wheat DDGS were detected between the different bio-ethanol plants. The hourly effective degradability ratios between N and energy indicated a potential excess of N in rumen when DDGS samples were evaluated as single ingredient. This excess increased as the proportion of wheat in feedstock increased. Estimated intestinal digestibility of rumen bypass protein (IDP) was similar between wheat and wheat DDGS, but higher in corn DDGS than in corn. Blend DDGS had the highest IDP (93.9 %RUP). Due to the significantly different PC sub-fraction found in wheat DDGS originated at the different bio-ethanol plants, a large but numerical difference was detected in IDP (89.4 vs. 75.9 %RUP).<p> In Study 3, we used both the DVE/OEB System and the NRC 2001 Model to reveal the metabolic characteristics of DDGS protein and predict the protein supply to dairy cattle. The two models showed higher protein values (DVE or MP) for DDGS samples than for feedstock grains. The higher IDP for blend DDGS largely contributed to the higher protein value relative to wheat DDGS and corn DDGS (MP: 277 vs. 242 vs. 250 g kg-1 DM). Similarly, protein values differed significantly between the bio-ethanol plants mainly as a result of the numerical but large difference in IDP (MP: 272 vs. 223 g kg-1 DM). According to the two models, the degraded protein balance for DDGS products was higher than in the parental grains. Wheat DDGS showed the highest potential N excess (DBPNRC: 78 g kg-1 DM). For corn DDGS, however, the DVE/OEB System suggested a potential N excess (11 g kg-1 DM) while the NRC 2001 Model exhibited a potential N deficiency (-12 g kg-1 DM). The degraded protein balance for wheat DDGS was similar between the different bio-ethanol plants.<p> In conclusion, the chemical and biological characteristics of DDGS varied among types and between wheat DDGS samples manufactured at the different bio-ethanol plants. Thus, it is inappropriate to assume fixed values for the nutritive value of DDGS without considering factors such as type of grain used and bio-ethanol plant origin. Further research with higher number of samples will help to clarify the use of the chemical profile to predict energy values and the potential degradability of DDGS.

No description available.

Thesis (M.E.)--University of Waikato, 2008. / Title from PDF cover (viewed September 18, 2008) Includes bibliographical references (p. 66-70)

Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Title on signature page has the Greek symbol for tau. Typescript. Vita. Includes bibliographical references (leaves 167-196). Also available on the Internet.

Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Title on signature page has the Greek symbol for tau. Typescript. Vita. Includes bibliographical references (leaves 167-196). Also available on the Internet.

Submitted by ISABELLA BARBOSA DOS SANTOS null (isabellabs853@hotmail.com) on 2018-04-04T23:51:02Z No. of bitstreams: 1 dissertação_Isabella_Barbosa_dos_Santos.pdf: 1903091 bytes, checksum: 01a14a6ac4969df8c86c454e56e542c4 (MD5) / Approved for entry into archive by Alexandra Maria Donadon Lusser Segali null (alexmar@fcav.unesp.br) on 2018-04-05T13:49:47Z (GMT) No. of bitstreams: 1 santos_ib_me_jabo.pdf: 1903091 bytes, checksum: 01a14a6ac4969df8c86c454e56e542c4 (MD5) / Made available in DSpace on 2018-04-05T13:49:47Z (GMT). No. of bitstreams: 1 santos_ib_me_jabo.pdf: 1903091 bytes, checksum: 01a14a6ac4969df8c86c454e56e542c4 (MD5) Previous issue date: 2018-02-22 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A caprinocultura é considerada um segmento de grande importância em agronegócios no país, gerando importante fonte de carne e leite, principalmente na região Nordeste. Entretanto, este criatório sofre grandes perdas econômicas devido às parasitoses que acometem o trato digestório. Dentre estas, destaca-se, o gênero Haemonchus, cujas espécies H. contortus e H. placei parasitam abomaso de caprinos e bovinos, respectivamente, havendo possibilidade de infecção cruzada dessas duas espécies helmínticas. O objetivo do presente estudo foi avaliar a viabilidade do parasitismo por H. placei em caprinos e compará-la à patogenicidade por H. contortus. Foram utilizados 14 caprinos, recém-nascidos, mantidos em gaiolas metálicas de piso suspenso, assim distribuídos: GI - quatro cabritos inoculados com 5000 larvas infectantes (L3) de H. placei, GII – quatro infectados com 5000 larvas infectantes (L3) de H. contortus, GIII – quatro animais inoculados com 2500 larvas L3 de H. contortus + 2500 H. placei e GIV – dois cabritos que receberam apenas água (controle). Exames de contagem de ovos de estrongilídeos por grama de fezes (OPG) foram realizados diariamente, após o 7º dia da inoculação. Os períodos pré-patentes foram de 24 dias para H contortus e de 31 dias para H. placei. O grupo inoculado apenas com H. placei apresentou médias de OPG inferiores quando comparado aos demais grupos. Decorridos 42 dias pós-infecção, os 14 caprinos foram eutanasiados e necropsiados, sendo coletados “in totum” os exemplares de Haemonchus. O grupo I apresentou média de 25,5 espécimes H. placei, o grupo II média de 619,5 de exemplares de H. contortus, o grupo III média de 120 exemplares de H. placei e 604,75 de H. contortus e no grupo IV nenhum helminto foi diagnosticado. Não foram constatadas quaisquer outras espécies e nem formas imaturas de Haemonchus no trato gastrintestinais dos caprinos. Fragmentos do abomaso foram coletados e armazenados em formol tamponado para análise histopatológica. Foram observados no grupo I lesões microscópicas leves apenas com poucos focos inflamatórios. Nos grupos II e III foram diagnosticadas lesões extensas, como edemas, focos inflamatórios difusos, infiltrado de eosinófilos, diminuição das células parietais. No grupo IV nenhuma alteração histopatológica foi diagnosticada. Nas condições desse estudo, a espécie caprina foi razoavelmente susceptível ao parasitismo por Haemonchus placei, sendo esse parasitismo mais proeminente nos animais que receberam infecção mista (H. placei + H. contortus). / Goat breeding is considered a very important segment in Brazilian agribusiness, generating a significant source of meat and milk. However, this industry suffers great economic losses due to parasitic diseases that affect the digestive tract, compromising their development. Among these, the Haemonchus genus stands out, with H. contortus and H. placei parasitizing goats and cattle, respectively, with the possiblity of cross infection between these helminth species in abomasu of hosts. The objective of the present study was to estimate the viability of H. placei parasitism in goats, and compare it with H. contortus pathogenicity. Fourteen newborn goats were used, distributed in the following way: GI - four goats inoculated with infective larvae (L3) of H. placei; GII – four animals infected with infective larvae (L3) of H. contortus; GIII - four caprines inoculated with larvae L3 of H. contortus + H. placei; and GIV - two goats that received only water (control). Each animal received 5000 L3 of Haemonchus species, in a single dose, orally. Egg per Gram of Feces (EPG) exams were performed daily after the 7th day of inoculation, establishing that the pre-patent period of H. contortus was 24 days and H. placei was 31 days. The group inoculated only with H. placei presented lower EPG means when compared to the other groups. After 42 days post-infection, all 14 goats were euthanized and necropsied, and Haemonchus specimens were collected “in totum". Group I presented an average of 25.5 specimens, while the mean of group II was 619.5, group III obtained an average of 120 specimens of H. placei and 604.75 of H. contortus and group IV did not present any specimens. No other species and no immature forms of Haemonchus were found in gastrintestinal tracts of experimental animals. Fragments of abomasum were collected and stored in buffered formalin for histopathological analysis, in which GI group showed mild microscopic lesions with only a few inflammatory foci, while groups II and III had extensive lesions, such as edema, diffuse inflammatory foci, eosinophilic infiltrate and hyperplasia of parietal cells. Group IV showed no changes. Under conditions of this study, the caprine species did not present itself as susceptible to parasitism by Haemonchus placei, with such parasitism being more prominent when in consortium with Haemonchus contortus.

Orientador: Francisco Leydson Formiga Feitosa / Banca: Flávia de Almeida Lucas / Banca: Suely Regina Mogami Bomfim / Banca: Breno Fernando Martins de Almeida / Banca: Mauricio Deschk / Resumo: Determinaram-se a vitalidade e os perfis hematológicos, hemogasométricos e bioquímicos de 37 cabritos prematuros com, aproximadamente, 141 dias de vida intrauterina, oriundos de cabras submetidas a diferentes protocolos de corticoterapia, a saber: Grupo I -Constituído por dez cabritos com ± 141 dias de vida intrauterina, nascidos por meio de cesarianas, de cabras que receberam, por via intramuscular (IM) em dose única, 20 mg de dexametasona, dois dias antes da cirurgia eletiva (139 dias); Grupo II - Composto por nove cabritos com ± 141 dias de vida intrauterina, nascidos por meio de cesarianas, de mães que receberam, por via IM/SID, a saber : 2 mg de dexametasona, dos 133 aos 136 dias de gestação; 4 mg dos 137 aos 139; e 20 mg aos 140 dias de prenhez; Grupo III - constituído por nove cabritos com ± 141 dias de vida intrauterina, nascidos por meio de cesarianas, de cabras que receberam, por via IM/BID, 16 mg de dexametasona aos 139, com doses repetidas a cada 12 horas até a cirurgia eletiva; e Grupo IV - composto por nove cabritos com ± 141 dias de vida intrauterina, nascidos por meio de cesarianas, de cabras que receberam 4, 8, 16 e 20 mg de dexametasona, por via IM/SID, aos 137, 138, 139 e 140 dias de gestação, respectivamente. Os mesmos foram avaliados no que tange à vitalidade, pelo escore APGAR. Obtiveram-se amostras sanguíneas de cabritos ao nascimento, aos 60 minutos, às 12, 24 e às 48 horas, visando à determinação do hemograma, como também das variáveis hemogasométrica... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Was determined the vitality and hematological profiles, hemogasometrics and biochemists of 37 kids approximately premature 141 days of intrauterine life, from goats subjected to different treatment protocols, namely: Group I- Consisting of ten goats with ± 141 days old, born through c-section, of goats that will receive, intramuscularly (IM) and once, 20 mg of dexamethasone, two days prior to elective surgery (139 days); Group II-composed of nine goats with ± 141 days old, born through c-section, of mothers who receive, via IM/SID: 2 mg of dexamethasone, 133 to 136 days of gestation; 4 mg of 137 to 139; and 20 mg to 140 days of pregnancy; Group III-consisting of nine goats with ± 141 days old, born through c-section, of goats that will receive, via IM/IDB, 16 mg of dexamethasone to 139, with repeated doses every 12 hours before elective surgery; and Group IV-composed of nine goats with ± 141 days old, born through c-section, of goats will receive 4, 8, 16 and 20 mg of dexamethasone, via IM/SID, to 137, 138, 139 and 140 days of gestation, respectively. The same will be evaluated with respect to vitality, APGAR score. This will give blood samples from goats at birth, to 60 minutes, at 12, 24 and 48 hours, aiming at determining the CBC, as well as the variables hemogasometrics, insulin, cortisol, urea, creatinine, serum lactate and glucose, as well as the Serum activity of associated disease and the concentration of total protein.For determination and assessment fees and the pos... (Complete abstract click electronic access below) / Doutor

Submitted by Eva Liliane dos Santos Silva (lilianezootecnia@gmail.com) on 2018-07-26T20:05:44Z No. of bitstreams: 1 Dissertação.pdf: 1148089 bytes, checksum: ac69c8450c4db0a881d7eccf4d700e97 (MD5) / Rejected by Isabel Pereira de Matos (isabel@fmva.unesp.br), reason: Citação errada no texto Referencias com erros on 2018-07-26T20:34:24Z (GMT) / Submitted by Eva Liliane dos Santos Silva (lilianezootecnia@gmail.com) on 2018-07-30T03:24:50Z No. of bitstreams: 1 reapresentação.pdf: 2393226 bytes, checksum: bc0779faeea41deef8789babdad651ce (MD5) / Approved for entry into archive by Ederson Vasconcelos Pereira null (edersonpereira@fmva.unesp.br) on 2018-07-30T17:53:44Z (GMT) No. of bitstreams: 1 silva_els_me_araca_int.pdf: 2393226 bytes, checksum: bc0779faeea41deef8789babdad651ce (MD5) / Made available in DSpace on 2018-07-30T17:53:44Z (GMT). No. of bitstreams: 1 silva_els_me_araca_int.pdf: 2393226 bytes, checksum: bc0779faeea41deef8789babdad651ce (MD5) Previous issue date: 2018-07-17 / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Este trabalho teve como objetivo mensurar a produção de hidroperóxidos e a capacidade antioxidante do plasma de cabras e seus cabritos, por meio do teste d-ROMs (Reactive Oxygen Metabolites) e BAP (Biological Antioxidant Potential), após as cabras serem submetidas a diferentes protocolos de corticoterapia antenatal, os animais foram aleatoriamente alocados em quatro grupos experimentais: grupo I - constituído por quatro cabras e sete cabritos, com uma única dosagem de 20 mg de dexametasona, por via IM/SID, dois dias antes da cirurgia eletiva (139 dias); grupo II - composto por quatro cabras e seis cabritos utilizando a dosagem de 2 mg de dexametasona, dos 133 aos 136 dias; 4 mg dos 137 aos 138; e 20 mg aos 139 dias de prenhes, por via IM/SID; grupo III - constituído por quatro cabras e sete cabritos, com dosagem de 16 mg de dexametasona aos 139, com doses repetidas a cada 12 horas até a cirurgia eletiva, por via IM/BID, e grupo IV - composto por quatro cabras e seis cabritos utilizando a dose de 4, 8, 16 e 20 mg de dexametasona, por via IM/SID, aos 137, 138, 139, 140 dias de gestação, respectivamente. Para analisar d-ROMs e BAP foram feitas coletas de sangue nas cabras por punção da veia jugular aos 15 minutos (M15) após o parto, e nos cabritos foram realizadas as coletas de sangue por punção da veia jugular nos respectivos momentos com referência ao nascimento de cada neonato: 15 minutos (M15), 24 horas (M24) e 48 horas (M48). / The objective of this work was to measure the production of hydroperoxides and the antioxidant capacity of goats and their goats by means of the d-ROMs test (Reactive Oxygen Metabolites) and BAP (Biological Antioxidant Potential), after the goats were submitted to different protocols of antenatal corticosteroid therapy, the animals were randomly assigned to four experimental groups: group I - consisting of four goats and seven goats, with a single dose of 20 mg of dexamethasone, IM / SID, two days before elective surgery (139 days); group II - composed of four goats and six goats using the dosage of 2 mg dexamethasone, from 133 to 136 days; 4 mg of 137 to 138; and 20 mg at 139 days of pregnancy, by IM/SID; group III - consisting of four goats and seven goats, with a dose of 16 mg of dexamethasone at 139, with repeated doses every 12 hours until elective surgery, by IM/BID, e group IV - composed of four goats and six goats using the dose of 4, 8, 16 and 20 mg dexamethasone, by IM / SID route, to the 137, 138, 139, 140 days of gestation, respectively. Blood samples were taken from the goats by puncture of the jugular vein at 15 minutes (M15) after calving and the kidneys were collected by puncturing the jugular vein at the respective moments with reference to the birth of each neonate: 15 minutes (M15), 24 hours (M24) and 48 hours (M48). / FAPESP: 16/00808-6

COSTA, Marcus Roberto Góes Ferreira. Consumo, digestibilidade dos nutrientes e comportamento ingestivo de ovinos com dietas à base de feno de juazeiro (Zizyphus joazeiro). 2008. 46 f . : Dissertação (mestrado) - Universidade Federal do Ceará, Centro de Ciências Agrárias, Departamento de Zootecnia, Fortaleza-CE, 2008 / Submitted by Nádja Goes (nmoraissoares@gmail.com) on 2016-08-05T14:29:41Z No. of bitstreams: 1 2008_dis_mrgfcosta.pdf: 234600 bytes, checksum: cb8e7599d71049a77d117481f4a46873 (MD5) / Approved for entry into archive by Nádja Goes (nmoraissoares@gmail.com) on 2016-08-05T14:30:06Z (GMT) No. of bitstreams: 1 2008_dis_mrgfcosta.pdf: 234600 bytes, checksum: cb8e7599d71049a77d117481f4a46873 (MD5) / Made available in DSpace on 2016-08-05T14:30:06Z (GMT). No. of bitstreams: 1 2008_dis_mrgfcosta.pdf: 234600 bytes, checksum: cb8e7599d71049a77d117481f4a46873 (MD5) Previous issue date: 2008 / The intake, the apparent digestibility of nutrients and ingestive behavior of sixteen sheep of Morada Nova race with average weight of 26.75 kg, divided into individual metabolic cages, receiving diets containing crescent levels of juazeiro hay (0, 33, 67 and 100%) were evaluated. A casualized block experimental design with four treatment and four replications was used. Dry matter, organic matter, crude protein, ether extract, neutral detergent fiber,acid detergent fiber, total carbohydrates, carbohydrates fiber and non-fiber carbohydrates intakes were not influenced by addiction of juazeiro hay of the experimental diets, with average value in the 1042.78 and 595 g/day the dry mater and neutral detergent fiber, respectively. Observed a reduction linear for dry matter, organic matter, neutral detergent fiber and carbohydrates fiber digestibility. For acid detergent fiber digestibility observed a reduction quadratic. The crude protein, ether extract, total carbohydrates, carbohydrates fiber digestibility did not present significant variation. The nitrogen balance was not influencing, present positive for treatments. The inclusion of juazeiro hay did not influencing the intake of nutrients, but it reduces the digestibility coefficient in some diet components. The inclusion of hay juazeiro did not influence the ingestive behavior of animals (P> 0.05). The juazeiro hay with convection grass hay is a feeding strategy for northwest semi-arid / Avaliaram-se o consumo, a digestibilidade aparente dos nutrientes e o comportamento ingestivo de ovinos da raça Morada Nova, recebendo rações contendo níveis crescentes de feno de juazeiro em substituição ao feno de capim-tifton 85 (0, 33, 67 e 100%). Utilizaramse dezesseis ovinos machos, não castrados, com peso médio de 26,75kg, alocados em gaiolas metabólicas individuais, distribuídos em um delineamento em blocos inteiramente casualizado, com quatro tratamentos e quatro repetições. Os consumos de matéria seca, matéria orgânica, proteína bruta, extrato etéreo, fibra em detergente neutro, carboidratos totais, carboidratos fibrosos, carboidratos não fibrosos e nutrientes digestíveis totais não foram influenciados pela adição do feno de juazeiro às dietas, com valores médios de 1.042,78 e 595,59 g/dia de matéria seca e fibra em detergente neutro, respectivamente. Observou-se uma redução linear para os coeficientes de digestibilidade da matéria seca, matéria orgânica, fibra em detergente neutro e carboidratos fibrosos. Para o coeficiente de digestibilidade da fibra em detergente ácido, observou-se uma redução quadrática. Os coeficientes de digestibilidade da proteína bruta, extrato etéreo, carboidratos totais e carboidratos fibrosos não apresentaram variações significativas. O balanço de nitrogênio também não foi influenciado e apresentou-se positivo para todos os tratamentos. A inclusão do feno de juazeiro não influenciou o consumo de nutrientes nem o balanço de nitrogênio, porém reduziu o coeficiente de digestibilidade de alguns componentes da dieta. Não se verificou influencia da inclusão do feno de juazeiro no tempo despendido para alimentação e ruminação (min/dia), eficiência de alimentação e ruminação (g de MS/h e g de FDN/h), dos ovinos em relação às dietas experimentais. Não houve diferenças para o número de refeições/dia, bem como para números de períodos ruminativos. O feno de juazeiro administrado juntamente com feno de gramíneas convencionais pode ser uma estratégia alimentar para época seca no semi-árido nordestino

SOUSA NETO, Jaime Martins. Caracterização e desempenho econômico dos sistemas de produção de ovinos Morada Nova no estado do Ceará. 2011. 84 f. Dissertação (Mestrado em zootecnia)- Universidade Federal do Ceará, Fortaleza-CE, 2011. / Submitted by Elineudson Ribeiro (elineudsonr@gmail.com) on 2016-05-17T19:07:06Z No. of bitstreams: 1 2011_dis_jmsousaneto.pdf: 1342135 bytes, checksum: 2ad71bdd3537cc268e5b6a39cd7e7dce (MD5) / Approved for entry into archive by José Jairo Viana de Sousa (jairo@ufc.br) on 2016-05-27T20:02:34Z (GMT) No. of bitstreams: 1 2011_dis_jmsousaneto.pdf: 1342135 bytes, checksum: 2ad71bdd3537cc268e5b6a39cd7e7dce (MD5) / Made available in DSpace on 2016-05-27T20:02:34Z (GMT). No. of bitstreams: 1 2011_dis_jmsousaneto.pdf: 1342135 bytes, checksum: 2ad71bdd3537cc268e5b6a39cd7e7dce (MD5) Previous issue date: 2011 / This chapter has the aim to make the technical analysis of production systems in Morada Nova sheep to complement the project "Characterization and basis for the genetic improvement of sheep Morada Nova", coordinated by Embrapa Goats and Sheep, with the financial support of Banco do Nordeste (FUNDECI / ETENE). In order to achieve this objective, primary research was conducted with data collected through the application of questionnaires to the sheep farmers of the municip ality of Morada Nova, Ceará State. To assess the technological level, the system of sheep was divided into four components: the producer management, infrastructure, production system, herd management and performance of the herds. Next, we determined the te chnological indices for each component separately and for all of them, based on its recommended technology. We found four production systems baptized by the technology index for each producer, being called "high technology gap" - level D, "regular technolog ical gap" - level C, "low technology gap" - level B and "high art " - level A. It was found that 17% of farmers fall in the level A, 33% at level B, Level C in 33% and 17% at level D. / O presente trabalho tem por objetivo principal efetuar a caracterização e avaliação do desempenho econômico dos sistemas de produção de ovinos da raça Morada Nova no Estado do Ceará. Para tanto foram aplicados questionários junto aos produtores de ovinos da raça Morada Nova no Estado do Ceará. Para caracterização técnica, dividiu-se o sistema de produção de ovinos em quatro componentes: gerenciamento do produtor, infra-estrutura do sistema de produção, manejo dos rebanhos e desempenho dos rebanhos. Em seguida, foram determinados os índices tecnológicos para cada componente, separadamente e para o conjunto deles, com base na respectiva tecnologia recomendada. Para a caracterização socioeconômica dos produtores, foram analisados sete fatores, a saber: infra-estrutura e produção de volumosos, rebanhos e manejo de produção, produção, aspectos ambientais, mão-de-obra, crédito rural e administração do empreendimento. A análise econômica foi feita utilizando-se a metodologia do Sistema Integrado de Custos Agropecuários – CUSTAGRI. Foram identificados quatro níveis tecnológicos de sistemas de produção que foram usados para a análise dos aspectos socioeconômicos, estimativas de custos e avaliação de rentabilidade. Os sistemas de produção de ovinos Morados Nova mais tecnificados mostraram-se lucrativos e capazes de viabilizar o desenvolvimento sustentável no meio rural, proporcionando a fixação do homem no campo com emprego e renda. As principais dificuldades observadas pelos produtores estão ligadas à mão-de-obra desqualificada, políticas de crédito insuficientes e falta de políticas públicas focadas na atividade.