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| Registros recuperados: 372 | |
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| Wineland, Nora. |
| In 1995, the National Animal Health Monitoring System (NAHMS) collaborated with the Research and Education Division of the American Sheep Industry Association (ASI) in developing a needs assessment tool to identify the most important health and productivity factors for the sheep industry. In collaboration with the USDA's National Agricultural Statistics Service (NASS), a statistically designed producer sample was selected to provide estimates for the United States sheep population in the 48 contiguous states. The NAHMS/ASI questionnaires were mailed to 19,807 sheep operations in January 1996; data were received and summarized from 5,174 respondents. It was estimated that in the 48 contiguous states, there were 82,040 operations with sheep as of 1995;... |
| Tipo: Report |
Palavras-chave: NAHMS; Sheep; Health; Disease; Death; Morbidity; Mortality; Economics; Predators; Vaccinations; Antibiotics; Income; Worms; Reproduction; Profitability; Livestock Production/Industries. |
| Ano: 1996 |
URL: http://purl.umn.edu/32743 |
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| Scott, J. Fiona. |
| Three 54ha "farmlets" were established in 2000 near Uralla, NSW to trial high input, moderate input and intensive rotational grazing systems. A representative farm approach was used to interpret the profitability results of the trial from July 2000 to June 2005 at a commercial scale level to make research results more relevant to farmers. At the gross margin level, the high input farmlet had the highest annual gross margins, but this farmlet had the worst whole farm performance. These contrasting results support the claim that annual activity gross margins cannot alone indicate the profitability of an investment. This demonstrates that whole farm analysis is the most suitable method to assess different grazing systems. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Sheep; Grazing systems; Pastures; Whole farm analysis; Livestock Production/Industries. |
| Ano: 2007 |
URL: http://purl.umn.edu/10402 |
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| Azevedo, Filipe Manuel Ventura Magalhades Da Cruz; Antonialli, Luiz Marcelo. |
| O objetivo da presente pesquisa foi identificar as potencialidades e dificuldades para a produção e comercialização de carne de ovinos na Região Metropolitana de Belo Horizonte-MG. Quanto à metodologia, a pesquisa classifica-se como de natureza qualitativa e exploratória, além de bibliográfica e de campo. Os dados foram coletados por meio da entrevista pessoal com criadores e um representante da Cooperativa Procordeiro e, além disso, por meio de um questionário estruturado aplicado aos representantes de supermercados e restaurantes. Os resultados da pesquisa evidenciaram certo otimismo sobre a evolução do mercado de carne ovina, entre criadores, cooperativa, supermercadistas e restaurantes. Por outro lado, houve concordância em que o preço da carne é... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Produção; Comercialização; Ovinos; Production; Commercialization; Sheep; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/108609 |
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| Stott, Alistair W.; Milne, Catherine E.; Gunn, George J.. |
| An epidemiological model is described that closely mimicked results of a published serological study of natural transmission of Maedi-Visna virus in a low ground flock of sheep. We adjusted parameters in the model from this baseline to explore the possible implications for the control of Maedi-Visna virus in typical British flocks. On closed hill farms, low probability of effective contact was most critical for control. In open low ground flocks, purchasing accredited replacements eliminated disease spread, otherwise flock size was the most important factor governing flock prevalence. Results highlighted the need for more epidemiological information about Maedi-Visna, particularly whether hill farms act as a hidden reservoir of virus or reduce the impact... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Livestock Production/Industries; Maedi-Visna; Model; Markov Chain; Sheep; Control. |
| Ano: 2009 |
URL: http://purl.umn.edu/61102 |
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| Lima, Roberto Arruda de Souza. |
| Os resultados preliminares do Censo Agropecuário mostraram que o rebanho ovino no Brasil é menor do que apontavam estudos anteriores. Para compreender esse resultado é necessário, entre outros estudos, verificar a evolução do efetivo no período. O objetivo do presente trabalho foi mensurar a concentração do rebanho ovino no Brasil, nos anos de 1995/96 e 2006. Para tanto, utilizou-se a metodologia do índice T de Theil e da análise tabular dos dados. Os resultados demonstraram redução da concentração do rebanho entre as Unidades da Federação. Apesar de se verificar concentração do rebanho pela análise tabular, esta não foi fortemente caracterizada pelo índice T de Theil, que mensurou a distribuição do rebanho em relação à área das Unidades da Federação.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Ovinocultura; Concentração; Índice T de Theil; Sheep; Concentration; Theil index; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/113999 |
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| Souza,Henrique Antunes de; Melo,Maria Diana; Primo,Anacláudia Alves; Vieira,Lucas Vasconcelos; Pompeu,Roberto Cláudio Fernandes Franco; Guedes,Fernando Lisboa; Natale,William. |
| ABSTRACT Composting is a useful way of transforming livestock waste into organic fertilizer, which is proven to increase soil nutrient levels, and thus crop yield. Remains from production and slaughter of small ruminants can become a source of important elements for plant growth, such as N, after microorganism-driven decomposition.The aim of this investigation was to evaluate the effects of this compost on soil fertility and on the nutritional status and yield of the corn crop. The experiment was conducted in a Haplic Luvisol in a randomized block design with six treatments and five application rates of the organic compound in Mg ha-1: 3 (half the standard rate), 6 (standard rate), 9 (one and a half times the standard rate), 12 (twice the standard rate),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Organic fertilizer; Goats; Sheep. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100544 |
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| Piva,Jonatas Thiago; Sartor,Laércio Ricardo; Sandini,Itacir Eloi; Moraes,Anibal de; Dieckow,Jeferson; Bayer,Cimélio; Rosa,Carla Machado da. |
| ABSTRACT Brazilian agriculture contributes significantly to nitrous oxide (N2O) and methane (CH4) emissions, so the understanding of such emissions at the field is crucial for mitigation strategies. This study quantified the impact of N application and sheep grazing on the N2O and CH4 emissions from a subtropical Ferralsol under an integrated crop-livestock (ICL) management system. In a long-term experiment in southern Brazil, gaseous fluxes were measured during a year-long cycle of ryegrass (Lolium multiflorum) plus oats (Avena sativa) winter pasture and a summer crop of common beans (Phaseolus vulgaris). Three rates of urea-nitrogen (0, 75, and 150 kg ha-1) were applied to the winter-pasture, which was subjected to two sheep grazing levels (continuously... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrate; Ammonium; Water filled pore space; Sheep. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100520 |
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| Bai,Jun Yan; Wang,Xu; Yang,You Bing; Zhang,Xiao Hui; Pang,You Zhi; Li,Hong Wei. |
| ABSTRACT In this study, POU1F1 gene polymorphism was detected in five sheep populations (large-tailed Han, small-tailed Han, Yuxi fat-tailed, Lanzhou large-tailed, and Mongolian sheep), using DNA pooling and sequencing, to provide theoretical basis for the breeding of excellent sheep varieties. Three single-nucleotide polymorphism (SNP) loci of POU1F1 gene were detected in five sheep populations, namely C355T (C/T), C71G (C/G), and C330G (C/G). C and T frequencies of C355T were 0.67/0.33, 0.81/0.19, 0.67/0.33, 1.00/0.00, and 0.93/0.07, respectively, in large-tailed Han, small-tailed Han, Yuxi fat-tailed, Mongolian, and Lanzhou large-tailed sheep. C of C355T locus was the dominant allele in five sheep populations. C and G allele frequencies of C330G locus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA pooling; Phylogenetic tree; Sheep; SNP. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001000604 |
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| Sousa,Wandrick Hauss de; Cartaxo,Felipe Queiroga; Costa,Roberto Germano; Cezar,Marcílio Fontes; Cunha,Maria das Graças Gomes; Pereira Filho,José Morais; Santos,Neube Michel dos. |
| The objective of this study was to evaluate performance, carcass dressing and gross profit margin of lambs of different genotypes finished in feedlot with diets containing two levels of energy (2.40 Mcal/kg dry matter - DM or 2.90 Mcal/kg DM). Fifty-four non-castrated lambs of the following genotypes were used: Santa Inês, F1 Dorper × Santa Inês and F1 Santa Inês × undefined breed at approximately 150 d of age averaging 22.6 kg of live body weight. Lambs subjected to the diet containing 2.90 Mcal/kg DM stayed in feedlot for a shorter period of time. Moreover, they showed lower intake of dry matter and water in addition to greater daily weight gain and corporal score. There was interaction of feed conversion, carcass dressing yield and gross profit margin.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Average daily gain; Dorper; Dry matter intake; Feed conversion; Santa Inês; Sheep. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500028 |
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| Silva,Wilton Ladeira da; Galzerano,Leandro; Reis,Ricardo Andrade; Ruggieri,Ana Cláudia. |
| The experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were composed of three residual leaf area indices (rLAI; 2.4; 1.6 and 0.8), allocated in completely randomized blocks with seven replications, totaling 21 experimental units. Tiller population density, pasture height, leaf area index, forage morphological composition and pasture forage mass were evaluated. The rLAI modified the tiller population density, which increased linearly with decrease in the rLAI of the pastures. Dry masses of leaf blade, stem and dead material... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf area index; Light interception; Sheep; Rotational stocking; Tillers. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000400002 |
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| Silva,Liliane Moreira; Silva,Aline Maia; Oliveira,Cláudio Henrique de Almeida; Carneiro,Hilton Alexandre Vidal; Souza,Priscila Teixeira de; Beserra,Frederico José; Silva,Cleidson Manoel Gomes da; Rondina,Davide. |
| The objective of the present study was to evaluate the effects of supplementation with detoxified castor meal (DCM) in the diet of ewes during pregnancy, partum, and post-partum on the weight development of their offspring and at slaughter. The study included 56 ewes with synchronized estrus that were naturally mated. At the beginning of pregnancy and in post-partum, hepatic and renal function-related parameters and progesterone levels were measured. At slaughter, the proximate composition and fatty acid profile were determined in the loin of ewes. There was no effect of diet on reproductive response after estrus synchronization. At the beginning of pregnancy, albumin and creatinine levels were lower in the DCM group. Supplementation with DCM did not alter... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass; Reproductive performance; Ricinus communis; Sheep. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000800419 |
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| Silva,Aderbal Marcos de Azevêdo; Santos,Ecileide Mamede dos; Pereira Filho,José Morais; Bakke,Olaf Andreas; Gonzaga Neto,Severino; Costa,Roberto Germano da. |
| This study evaluated body fat, protein and energy contents and nutritional requirements for body weight (BW) gain of lambs in tropical semiarid conditions. Thirty-two castrated Santa Inês 3-to-4-month old lambs (initial BW: 15.8 kg ± 1.4 kg) were used. Eight lambs were initially slaughtered to serve as the reference for initial body weight composition. The remaining 24 animals were placed in a randomized block with three treatments and eight replications. Each one of the eight experimental blocks consisted initially of three 15 kg lambs to which treatments (daily supplement levels: 0.0, 1.0, and 1.5% of body weight of a corn, soybean and minerals concentrate mixture adjusted for a daily 200 g BW gain at 1.5% level) were randomly assigned. As one of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Native pasture; Sheep. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100028 |
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| Lima Júnior,Dayrton Farias; Barreto,José Victor Pronievicz; Sterza,Fabiana de Andrade Melo; Souza-Cáceres,Mirela Brochado; Pontes,Vanessa Pereira; Zundt,Marilice; Castilho,Caliê; Cunha Filho,Luiz Fernando Coelho da. |
| ABSTRACT The objective of this study was to evaluate the reproductive performance of ewes subjected to a short-term protocol for estrus induction using 1 mg of Norgestomet during the non-breeding season in Brazil. A total of 84 ewes were randomly divided into two equal groups (n = 42 per group). Controlled Internal Drug Release (CIDR) containing 330 mg progesterone was inserted into the vagina in the first 42 ewes, and for the other 42 ewes in the second group, 1 mg of Norgestomet was placed subcutaneously in the convex surface of the ear. Implants and devices were removed in both groups on day 6. Following the removal of implants and devices, 10 mg of PGF2α and 300 IU of eCG were injected in all the ewes. After 48 h of application, three fertile rams were... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Animal breeding; Ovine; Progesterone; Reproductive traits; Sheep; Synchronization of estrus. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100603 |
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| Registros recuperados: 372 | |
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