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| Registros recuperados: 10 | |
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| Sogut,B; Celik,S; Ayasan,T; Inci,H. |
| ABSTRACT The objective of this study was to identify the growth curve of live weight of turkeys reared in different systems (intensive and free- range) with the best mathematical model. To achieve this goal, the live weight of male and female turkeys (Large White) reared for 0-18 weeks were used. Logistic, Gompertz, Von Bertalanffy, and Gauss were used to determine the best model for the turkeys. In comparison of the models, values of Coefficient of Determination (R2), Mean Squares of Error (MSE) and Model Efficiency (ME) were used. In Von Bertalanffy model, the coefficient of determinations for males and females were found as 0.9974 and 0.99915 in intensive system and 0.9794 and 0.9804 in Free-Range system, respectively. As a result of this study, because... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding system; Growth models; Large white turkey; Live weight. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400619 |
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| Adugna, Teressa. |
| This study has attempted to identify determinants of cattle price per kilogram live weight using a log-linear regression model. The estimated model explains about 48% of the variation in market prices of cattle. Price per kilogram live weight of cattle increases with animal characteristics such as age, live weight and grade. Type of sellers, buyers' purposes, festivals, time of transaction and a time trend are also important variables in affecting cattle prices. Farmers tend to sell their animals at price discounts as compared to trader sellers. Cattle sellers suffer from price discounts in selling to buyers with business purposes in comparison to selling to ultimate consumers. Sellers tend to benefit from animal sales during festivals, as they tend to... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Cattle; Price variation; Live weight; Animal characteristics; Market characteristics; Eastern Ethiopia; Livestock Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/25336 |
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| Teixeira, Paulo Sergio dos Santos; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Wechsler, Francisco Stefano; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Moura, Ana Silvia Alves Meira Tavares; Universidade Estadual Paulista “Júlio de Mesquita Filho”. |
| The objective was to evaluate the effect of nutritional density and season on the performance of young rabbit does before the first mating. Forty-eight females from the Botucatu Genetic Group were used in each season (warm or cool), starting at the age of 70 days, housed in groups of four per cage up to 119 days, and reared individually from 120 to 140 days of age. The high-density diet was formulated to contain, on a 90% DM basis, 18.4% CP, 16.5% ADF and 2,500 kcal DE kg-1; whereas the low-density diet was formulated to contain 14.7% CP, 24% ADF and 2,000 kcal DE kg-1. The experiment was conducted according to a 2x2 factorial design (two diets x two seasons) with repeated measures (weeks). The high-density diet promoted lower feed intake, higher final... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.03.00-1 acid detergent fiber; Feed efficiency; Feed intake; Growth; Live weight; Nutrition acid detergent fiber; Feed efficiency; Feed intake; Growth; Live weight; Nutrition. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19101 |
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| Sogut,B; Sengul,T; Inci,H; Sengul,Y; Ayasan,T. |
| ABSTRACT This study was conducted to investigate the effects of transient treatment with propylthiouracil (PTU) on some reproduction traits and live weight of quails. The trial lasted 8 weeks. To accomplish this goal, 700 1-day-old quail chicks were used, randomly divided into 8 groups. PTU was added to feed by 0.1% and 0.5% /wt. The first 4 groups had 0.5% PTU at the age of 2-4, 4-6, 6-8 and 2-8 wk., respectively. The 5 th, 6 th and 7 th groups had 0.1% PTU at the age of 2-4, 4-6 and 6-8 wk., respectively, and the 8 th group was the control with no PTU. Quails were bled at 60 days of age. Then right and left testes were taken out and weighed. At the end of the trail, least square means of the live weight of the treatment groups were higher than the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quail; Propylthiouracil; Live weight; Reproduction traits. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400711 |
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| Abrego Hernández, Rafael. |
| El objetivo del trabajo fue analizar el sistema de producción y las poblaciones de cabras criollas para definir el morfotipo existente de la Mixteca Poblana. El trabajo se realizó en los municipios de Tecomatlán, Tehuitzingo, Piaxtla, Chinantla, Tulcingo de Valle y Acatlán de Osorio, Puebla. Para la caracterización del sistema de producción caprino se aplicó una encuesta a 100 productores para registrar información del perfil del productor, rebaño, infraestructura, alimentación, mejora genética, sanidad y comercialización. A una población de 1290 cabras, se les registró información faneróptica y zoométrica. La información se analizó para obtener estadísticos descriptivos, discriminantes canónicos y componentes principales. La edad de los productores fue de... |
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Palavras-chave: Cabra colorada; Manejo de cabras; Medidas zoométricas; Perfil del productor; Peso vivo; Body traits; Goat farmer's profile; Live weight; Management practices; Reddish goats; Desarrollo y Gestión de Sistemas Ganaderos; Maestría Tecnológica. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2204 |
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| Sedano Tule, Diana Angelina. |
| Con el objetivo de caracterizar a la cabra criolla para carne en el municipio de Tlalixtaquilla, Guerrero, se registró información de 417 cabras de nueve rebaños con predominancia de cabras pastoreñas. Para la caracterización de cada cabra se registró el peso vivo, edad, 13 medidas zoométricas, color de capa, Famacha y el tipo genético. El análisis de los datos se realizó mediante estadística descriptiva, análisis discriminante canónico, GLM (General Linear Model) y análisis de regresión con el programa estadístico SAS. El tipo genético de cabras presente en los rebaños fue la Pastoreña (85.9%), cruzas de Boer (1.7%), cruza de Alpina (10.6%) y otras cruzas (1.9%). El peso promedio fue de 39.4±8.2 kg. El color de capa predominante fue el blanco (50%), bayo... |
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Palavras-chave: Cabras pastoreñas; Caracterización zoométricas; Color de capa; Faneróptica; Peso vivo; Body traits; Coat color; Creole goats; Cutaneous appendix; Goat characterization; Live weight; Desarrollo Sostenible de Zonas Indígenas; Maestría Tecnológica. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1838 |
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| Silva,Thiago Bruno Ribeiro da; Araújo,Cláudio Vieira de; Bittencourt,Thereza Cristina Borio dos Santos Calmon de; Araújo,Simone Inoe; Lôbo,Raysildo Barbosa; Bezerra,Luiz Antônio Framartino; Silva,Delvan Alves da; Silva,Alessandra Alves da. |
| A total of 204,912 records of birth weights up to 550 days of age, of 24,890 Nellore cattle, offspring of 375 sires and 16,917 dams from five herds in the state of Mato Grosso, Brazil, were used in order to describe the variability of the weight development by random regression models. The model evaluated as the most suitable used the covariance function of fourth order to describe the variability of the effects of additive genetic, animal permanent environmental and maternal effects of third order to describe the maternal genetic effect, with four classes of residual variance. Heritability estimates ranged from 0.18 to 0.46 from the beginning of trajectory to 210 days of age, from 0.45 to 0.48 post-weaning to 365 days of age and from 0.47 to 0.57 at later... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beef cattle; Live weight; Selection. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000400004 |
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| Registros recuperados: 10 | |
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