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Search Results: 1 - 10 of 179131 matches for " Nelson Manzoni de; "
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Effects of weaning age and weight on lamb growth rate of Morada Nova breed raised in a tropical extensive production system
Selaive -Villarroel, Arturo Bernardo;Maciel, Marcus Brocardo;Oliveira, Nelson Manzoni de;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000300030
Abstract: the aim of this research were to study the effect of weaning age and weight on post-growing rate (pwg) and to estimate the optimal weaning age (wa) and weight (ww) of morada nova-white variety breed lambs raised under extensive system conditions. a total of 31 male and female lambs were evaluated, being 19 lambs born in april/may 2001 and 12 lambs born in february/march 2002. lambs were distributed in the following treatments at weaning: 1) weaning age = t1: weaned at 60 days; t2: weaned at 75 days; t3: weaned at 90 days, and 2) weaning weight = t1: weaned with 9 to 10.4kg weigth; t2: weaned with 10.5 to 12.4kg weight and t3: weaned with above 12.5kg weight. the pwg was recorded through successive weightings done every fourteen days from weaning to 180 days of age. data were analysed through a statistical model that included age and weight at weaning, sex and year of birth as fixed effects. lambs weaned with 60, 75 and 90 days of age showed non-significant differences (p>0.05) on pwg. however, ww had a significant influence (p<0.05) on lamb weight. the group weaned with 9-10.4kg had smaller live weight than those weaned with 10.5-12.4kg or above 12.5kg. no differences were found between these last two groups. also, sex had significant effect (p<0.05) on lamb growing with males being heavier than females (20.7kg and 17.6kg, respectively). year of birth did not affect pwg. it was concluded that weight at weaning is more important than age at weaning on post-weaning growing of lambs. the most efficient live weaning weight on white morada nova lambs raised in extensive system production is over 10.5kg.
Produ??o de carne em ovinos de cinco genótipos: 2. Componentes do peso vivo
Osório, José Carlos;Oliveira, Nelson Manzoni de;Jardim, Pedro Osório;Monteiro, Eliane Mattos;
Ciência Rural , 1996, DOI: 10.1590/S0103-84781996000300023
Abstract: fifty (ten per breed) merino, polwarth, corriedale, romney marsh and texel lambs were castrated at 30 days of age and raised up to weaning (ten weeks) on native pasture (mainly composed by paspalum notatum flügge and axonoplus qff?nis chase) in the southern (bagé, rs) region of brazil. following weaning, the animals were feedloted during one week and each lamb was daily fed 200 grams of a diet containing 17% of crude protein and 75% of dry matter basin. the animals were then moved to pasture up to 225 days of age when they were slaughtered to compare their live weight as a total and its components. live weight was influenced by genotypes. this effect might not be observed in absolute numbers, but in percentage (head), or vice-versa, as shown by heart, lungs and liver. the texel breed showed higher absolute values as compared to merino. polwarth, corriedale and romney marsh. percentualy, this superiority was only observed in carcass. merino and polwarth showed higher skin percentage, as compared to other breeds.
Produ??o de carne em ovinos de cinco genótipos: 1. Crescimento e desenvolvimento
Oliveira, Nelson Manzoni de;Osório, José Carlos;Monteiro, Eliane Mattos;
Ciência Rural , 1996, DOI: 10.1590/S0103-84781996000300022
Abstract: the work was carried out at the centro de pesquisa de pecuária dos campos sulbrasileiros (cppsul) of embrapa, bagé, rs, during 1994/95 with male lambs of the texel, romney marsh, corriedale, polwarth and merino breeds, bom and raised up to weaning (10 weeks) on native pasture (mainly composed by de paspalum notatum flügge e axonopus aff?nis chase). growth and development up to slaughtering at 7.5 months were evaluated. after weaning, besides the native pasture, all lambs (10 per breed) werefed with a concentrate containing 17% of crude protein and 75% of dry matter basis (200 g/lamb/day), until the slaughtering age. the results showed that birth weight of breeds was similar (p>0.05); however, the liveweight at weaning and the liveweights after weaning of both texel and romney marsh lambs were greater than those of corriedale, polwart and merino lambs. they showed liveweights always similar. the first fourty five days after weaning, lambs of texel, romney marsh and polwarth breeds showed greater food conversion. in all genotypes, liveweight gains after 5.5 months of age had no importam contribution (in relation to time) to the slaughtering weight.
Produ??o de carne em ovinos de cinco genótipos: 3. Perdas e morfologia
Osório, José Carlos;Oliveira, Nelson Manzoni de;Nunes, Ana Paula;Pouey, Juvêncio Luiz;
Ciência Rural , 1996, DOI: 10.1590/S0103-84781996000300024
Abstract: fifty (ten per breed) merino, polwarth. corriedale, romney marsh and texel lambs were castradet at 30 days of age and raised up to weaning (ten weeks) on native pasture at the centro de pesquisa de pecuária dos campos sulbrasileiros (embrapa), southern (bagé, rs) region of brazil. following weaning, the animals were feedioted during one week and each lamb was daily fed with 200 grams of a diet containing 17% of crude protein and 75% of dry matter basin. the animals were then moved to pasture up to 225 days of age when they were slaughtered to quantify and compare in vivo and carcass tosses and morphology. liveweight (with and without a fasting period) was influenced by genotype. however, merino, polwarth and corriedale live weight were not different among themselves, but lower than romney marsh lambs, which by their turn, were lower than texel animals live weight. fasting losses was significantiy affected when compared in absolute numbers (kg), bui not percentually. highest tosses were observed in texel breed lambs followed by romney marsh, whereas corriedale, polwarth and merino didnot differ among themselves. live weight carcass yield were significantly influenced by genotype. heavier lambs showed superior carcass yield. texel animals showed superior in vivo and in the carcass morphology, along wilh better conformation, body cond?tion and body and carcass capacity, as cpmpared to other breeds.
Produ??o de carne em ovinos de cinco genótipos: Composi??o regional e tecidual
Oliveira, Nelson Manzoni de;Osório, José Carlos da Silveira;Monteiro, Eliane Mattos;
Ciência Rural , 1998, DOI: 10.1590/S0103-84781998000100021
Abstract: the work was carried out at the centro de pesquisa de pecuária dos campos sulbrasileiros - cppsul/embrapa, bagé, rs, brazil, (field experiment) and at the departamento de zootecnia da universidade federal de pelotas - ufpel, pelotas, rs, brazil, (laboratorial fase) during 1994/95. male lambs from texel, romney marsh, corriedale, polwarth and merino breeds (10 lambs per breed), born and raised on native pasture (mainly of paspalum notatum flügge and axonopus affinis chase), were weaned at 10 weeks of age, after what were fed with 200g/lamb/day of a concentrate containing 17% of crude protein and 75% of dry matter basis. carcass weight and fat content, as well as carcass regional composition (weight of its main pieces) and leg and shoulder tissue composition (% of bone, muscle and fat), were examined. the results showed that, with exception of rib weight and shoulder fat content, breed differences were significant (p<0.05). texel and romney lambs had heavier carcass than the other breeds (p<0.05), which showed similar weights (p>0.05). merino lambs had higher % of shoulder and lower % of leg (p<0.05) than texel lambs. both were similar among other breeds. texel lambs had lower % of neck than merino lambs. there was no breed difference (p>0.05) for % of rib. carcasses from romney, corriedale and merino lambs presented lower fat content scores. both the texel and polwarth breeds had lower % of bone in the leg, however, the former was greater in muscle percentage with lower fat content. marked breed differences were found in the shoulder tissue composition. texel lambs were lower in °/o of bone and higher in % of muscle (p<0.05). the other genotypes were similar (p> 0.0 5) for these components. there were no differences (p>0.05) regarding fat content in the shoulder.
Morfologia, características da carca a e componentes do peso vivo em borregos Corriedale e Ideal
Mendon?a Gilson de,Osório José Carlos,Oliveira Nelson Manzoni,Osório Maria Tereza
Ciência Rural , 2003,
Abstract: O objetivo deste trabalho foi comparar às ra as Corriedale e Ideal quanto as suas características morfológicas e da carca a, bem como avaliar a varia o do peso vivo e de seus componentes. Foram utilizados 40 borregos (castrados aos 30 dias de idade) das ra as Ideal (n = 19) e Corriedale (n = 21), criados em condi es extensivas, com alimenta o exclusiva em pasto nativo, desmamados aos 70 dias e abatidos com 1 ano de idade. A fase experimental de campo foi realizada na EMBRAPA - CPPSUL de Bagé/RS, e a fase laboratorial na UFPel - FAEM - Departamento de Zootecnia, Pelotas/RS. A ra a Corriedale apresentou valores maiores (P<0,05) para conforma o, condi o corporal, comprimento corporal (todas in vivo) e comprimento da perna in vivo e na carca a. Para as demais características morfológicas, principalmente aquelas avaliadas na carca a, n o foram encontradas diferen as (P>0,05). A ra a Corriedale apresentou maior peso vivo ao abate e maior peso de carca a quente, observando-se na ra a Ideal as menores perdas por resfriamento, tanto em gramas quanto em percentagem (P<0,05). N o houve efeito de ra a no peso de carca a fria e nos rendimentos verdadeiro e comercial (P>0,05). Os borregos Corriedale apresentaram maiores pesos de patas e pulm es com traquéia e menor peso de gordura interna. Em valores relativos (%), os borregos da ra a Ideal apresentaram uma propor o maior de fígado e de gordura interna. Concluiu-se que diferen as morfológicas entre as ra as estudadas foram observadas somente in vivo. Já os componentes do peso vivo, apresentaram uma varia o, quantitativa e qualitativa, em ambas as ra as.
Morfologia, características da carca?a e componentes do peso vivo em borregos Corriedale e Ideal
Mendon?a, Gilson de;Osório, José Carlos;Oliveira, Nelson Manzoni;Osório, Maria Tereza;Esteves, Roger;Wiengard, Mabel Mascaranhas;
Ciência Rural , 2003, DOI: 10.1590/S0103-84782003000200026
Abstract: the objective of this study was to compare corriedale and polwarth breeds as to morphologic and carcass characteristics, as well as, to evaluate liveweight and liveweight components variation. forty wethers (castrated at 30 days of age), were used (19 polwarth and 21 corriedale), weaned at 70 days, and slaughtered with one year of age. animals were raised under extensive native pasture conditions at embrapa pecuária sul - cppsul, bagé, rs. laboratory measurements were carried out at the animal science department of universidade federal de pelotas, in pelotas, rs. corriedale breed showed higher values (p<0.05) for in vivo body conformation, body condition, body length and leg length. other morphological carcass characteristics did not show significant differences (p>0.05). corriedale breed presented higher slaughtering weight and higher hot carcass weight. polwarth showed lower cooling losses, both in weight and percentage (p<0.05). cold carcass weight and yield were not different between breeds (p>0.05). corriedale wethers presented higher weight for feet and lungs and lower weight for internal fat. in relative values, polwarth wethers showed higher proportion of liver and internal fat. it is concluded that morphological differences are observed only in live animals. liveweight components showed quantitative and qualitative differences for both breeds.
Produ o de Carne em Cordeiros Cruza Border Leicester com Ovelhas Corriedale e Ideal
Osório José Carlos da Silveira,Oliveira Nelson Manzoni de,Osório Maria Teresa Moreira,Jardim Rodrigo Desessard
Revista Brasileira de Zootecnia , 2002,
Abstract: O estudo objetivou oferecer informa es sobre a morfologia (in vivo e na carca a), características comerciais, componentes do peso vivo, qualidade da carca a e da carne em cordeiros n o castrados cruzas de Border Leicester com ovelhas Corriedale e Ideal, criados em condi es de campo nativo no Rio Grande do Sul, Brasil. Foram utilizados 24 cordeiros, 11 procedentes do cruzamento de Border x Corriedale e 13 de Border Leicester x Ideal, sacrificados com 6,5 meses de idade. Foi verificado um efeito entre os cruzamentos para a perda ao resfriamento (em kg e %), peso e percentagem da pele, peso e percentagem do pesco o e capacidade de reten o de água. Igualmente, foi verificado que há diferen a no desenvolvimento relativo dos componentes do peso vivo, composi o regional da carca a e composi o tecidual da paleta entre os cordeiros Border Leicester x Corriedale e Border Leicester x Ideal e, dentro de cada genotipo verificou-se uma diferen a quantitativa e qualitativa entre a paleta e a perna. As diferen a quanto à qualidade da carca a e carne n o apresentam importancia prática que justifique uma diferencia o do produto; porém, a comercializa o deve ser com base no peso de carca a fria e n o com base no peso vivo ou carca a quente. A paleta é mais precoce que a perna em ambos grupos genéticos.
EFFECTS OF THE INTERACTION GENOTYPE X NUTRITIONAL SYSTEM ON LIVEWEIGHT AND CARCASS COMPONENT EFEITO DA INTERA O GENóTIPO X SISTEMA NUTRICIONAL SOBRE A COMPOSI O REGIONAL E TECIDUAL
Roberta Rollemberg Cabral Martins,Nelson Manzoni de Oliveira,José Carlos da Silveira Osório,Maria Teresa Moreira Osório
Ciência Animal Brasileira , 2008,
Abstract: With the objective of evaluating the isolated effects of genotype and of nutritional system, as well as the effect of the interaction between genotype and nutrition on quantitative and qualitative aspects of the meat production, sixty Polwarth male lambs and 51 Corriedale male lamb, born at August and September, raised in three different nutritional systems (native pasture, improved pasture e confinement) and slaughtered with 122 days of age, were examined. The animals were weighed before slaughtering and, after slaughtering, the following traits were measured: cold carcass weights, shoulder, hindquarter, rib and neck weights and the weight of bone, muscle and fat of the shoulder and the hindquarter. The percentages were obtained by calculation. The experimental design was a totally randomized in a 3x2 factors (nutritional systems and genotypes). There was interaction genotype-nutrition (P <0.05) for bone of the hindquarter and of the shoulder and for the shoulder fat. Except for the weight and percentage of the bone of the shoulder, for all the other parameters of weight and of carcass studied there was not genotype effect. The nutrition influenced significantly (P <0.05) all the parameters. KEY WORDS: Interaction genotype-nutritional system, lambs, regional composition, tissue composition. Com o objetivo de avaliar os efeitos isolados de genótipo e de sistema nutricional, bem como o da intera o genótipo x sistema nutricional sobre aspectos quantitativos e qualitativos da produ o de carne ovina, utilizaram-se 60 cordeiros da ra a Ideal e 51 da ra a Corriedale, nascidos no mês de agosto e setembro, criados em três sistemas diferentes de alimenta o (campo natural, pastagem cultivada e confinamento) e abatidos com 122 dias de idade. Os animais foram pesados antes do abate e de suas carca as obteve-se o peso da carca a fria, da paleta, da perna, do costilhar e do pesco o e, por cálculo, percentagem de paleta, da perna, do costilhar e do pesco o. A paleta e a perna foram desossadas e destes cortes obtiveram-se o peso de osso, músculo e gordura e, por cálculo, a percentagem desses tecidos. Desenvolveu-se o experimento em um delineamento inteiramente casualizado, em esquema fatorial 3x2 (sistemas nutricionais e genótipos). Houve intera o genótipo-nutri o (P<0,05) para osso da perna e da paleta e para gordura da paleta. Com exce o da percentagem do osso da paleta, para todos os demais parametros n o houve efeito de genótipo. O sistema nutricional influenciou significativamente (P<0,05) todos os parametros. PALAVRAS-CHAVES: Composi o regional, composi o
Produ??o de carne em ovinos de cinco genótipos. 5. Estimativas de qualidade e peso de carca?a através do peso vivo
Oliveira, Nelson Manzoni de;Osório, José Carlos da Silveira;Selaive-Villarroel, Arturo;Benitez-Ojeda, Daniel;Borba, Marcos Flávio da Silva;
Ciência Rural , 1998, DOI: 10.1590/S0103-84781998000400021
Abstract: the work was carried out at the centro de pesquisa de pecuária dos campos sulbrasileiros (cppsul) of embrapa, bagé, rs, brazil, with the participation of the faem/ufpel, departamento de zootecnia, pelotas, rs, brazil, during 1994/96. it was used a total of 117 male lambs of the texel (n =26), romney marsh (n =24), corriedale (n =26), polwarth (n =23) and merino (n=18) breeds, born and raised up to weaning (10 weeks) on native pasture (mainly composed by paspalum notatum flügge e axonopus affinis chase). after weaning, besides the native pasture, all lambs were fed with 200 g/lamb/day of a concentrate containing 17% of crude protein and 75% of dry matter basis, until slaughtering at 7,5 months of age. the between breed relationship of liveweight with carcass weight and some indicators of carcass quality were examined. the results showed that the regression coefficients of carcass weight on slaughtering weight were similar, however, there were differences on the height of the regression lines, derived from values of both texel and romney lambs. by increasing liveweight: a) there was no effect on carcass fat content; but carcass cover fat varied in the romney breed, b) carcass conformation was not affect in corriedale and romney marsh lambs and c) carcass compacity was affected in polwarth, corriedale, romney marsh and texel lambs.
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