Consulta: subjectFacets:"Semi-intensive system"
Registros recuperados: 3
Data/hora: 13/06/2024 08:02:54

Behavior and performance of broiler strains reared under semi-intensive system with shaded areas
Provedor de dados: 89
Autores: Barbosa Filho,JAD; Silva,MAN; Silva,IJO; Coelho,AAD; Savino,VJM.
The matter of animal welfare has led to studies in order to evaluate alternative rearing systems for livestock in order to improve well-being. The semi-intensive system is an alternative method of rearing broilers in which the birds are kept in a poultry house and have free access to a pasture area during the day. It is known that ambient conditions may directly affect the behavior of birds reared in the semi-intensive system. Therefore, this research evaluated the behavior of four broiler strains reared under a semi-intensive system with a shaded area (provided by a black plastic screen - 50%) and the bioclimatic characteristics of this environment when compared with the non-shaded pasture. Thirty-five birds were reared in pens with 4.5 m² and 35 m² of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Broiler; Semi-intensive system; Welfare.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400003

Milk production of crossbred Holstein × Zebu cows in the northeastern region of Paraná State
Provedor de dados: 96
Autores: Perotto,Daniel; Kroetz,Inácio Afonso; Rocha,José Lázaro da.
The objective of this work was to evaluate milk production of a Holstein × Zebu herd managed on a semiintensive system at Estação Experimental Joaquim Távora, IAPAR, in the northeastern region of Paraná - Brazil. Two hundred and seventeen records on milk production per lactation period (MY), milk production up to 305 days of lactation (MY305) and length of lactation period (LL) of 82 crossbred cows varying in breed composition were analyzed according to a linear statistical model that included the fixed effects of breed composition, season and year at onset of lactation, order of parturition and place of birth, in addition to the experimental error. Cows born in Joaquim Távora had longer lactation periods and produced more milk than cows born in Ibiporã....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crossbreeding; Holstein; Zebu; Lactation length; Semi-intensive system.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000400009

Interaction between feeding rate and area for periphyton in culture of Nile tilapia juveniles - doi: 10.4025/actascianimsci.v34i2.12469
Provedor de dados: 2
Autores: Rebouças, Vanessa Tomaz; Universidade Federal do Ceará; Caldini, Nayara Nunes; Universidade Federal do Ceará; Cavalcante, Davi de Holanda; Universidade Federal do Ceará; Silva, Francisco Jackes Rodrigues da; Universidade Federal  do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal  do Ceará.
The objective of the present work was to determine the effects of the interaction between feeding rate and area for periphyton in rearing aquaria for Nile tilapia. Twenty 25 L polyethylene outdoor aquaria were used to hold experimental fish. Three tilapia fingerlings (2.56 ± 0.14 g) were stocked in each aquarium for five weeks (12 fish m-2). There were two different feeding rates (full and full minus 30%) and two submerged areas for periphyton development (59.4% and 96.5% of the aquarium surface area; n = 5). Final body weight, specific growth rate and yield in the 96.5%-area aquaria of fish submitted to 30% less feed were significantly higher than in the 96.5%-area aquaria submitted to full feeding rates. Fish growth in the restricted-feed aquaria was...
Palavras-chave: Tilapia; Fish culture; Semi-intensive system; Productivity; Water quality.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12469