Consulta: subjectFacets:"Hens"
Registros recuperados: 5
Data/hora: 11/06/2024 10:15:14

Clasificación zoométrica y fenotípica del gallo para exhibición en la sierra norte y el altiplano del estado de Puebla, México.
Provedor de dados: 32
Autores: González Ramírez, William.
El objetivo del trabajo fue analizar el sistema de cría del gallo para espectáculo y clasificar a las poblaciones en algunos lugares de la Sierra Norte y el Altiplano del estado de Puebla. La información se colectó de 11 criadores en una muestra de 507 gallos y 74 gallinas de los municipios de Puebla, Libres, Tlatlauquitepec y Cuetzalan. Para caracterizar a los gallos y gallinas, se registraron 24 medidas zoométricas corporales y diez variables fenotípicas en las que estuvieron incluidas el color del plumaje y peso vivo. Las aves medidas tenían de siete y ocho meses de edad. Los análisis estadísticos se realizaron mediante estadística descriptiva, análisis cluster y de varianza con el paquete estadístico SAS. Se detectaron dos tipos de galleros, los que...
Palavras-chave: Agrupación de gallos; Gallinas; Gallos de pelea; Medidas zoométricas; Peso vivo; Sistema de producción; Body traits; Clusters; Fighting rooster; Hens; Live weight; Production system; Desarrollo y Gestión de Sistemas Ganaderos; Maestría Tecnológica.
Ano: 2012
URL: http://hdl.handle.net/10521/1841

Internal quality of conventional and omega-3-enriched commercial eggs stored under different temperatures
Provedor de dados: 89
Autores: Cedro,TMM; Calixto,LFL; Gaspar,A; Curvello,FA; Hora,AS.
The internal quality of conventional and ω-3 enriched commercial eggs stored at different temperatures was evaluated. Eggs derived from Isa Brown layers fed two different diets. In Group 1, 432 hens were fed throughout their productive life with a diet based on corn and soybean meal (production of conventional eggs). In Group 2, starting at 22 weeks of age, other 432 hens were fed a diet containing 1.5% of marine algae substrate and 1.8% of fish oil (production of ω-3 enriched eggs). The following parameters were evaluated: Haugh unit, yolk index, albumen pH, and yolk pH. There were no significant differences between conventional and enriched with ω-3 eggs as to internal quality parameters. Only the interaction between storage time and temperature was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commercial eggs; Hens; Omega-3; Storage; Temperature.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300007

Enzyme complex at different levels in diets with enriched ingredients for commercial laying hens
Provedor de dados: 96
Autores: Silva,Jaqueline de Cássia Ramos da; Rabello,Carlos Bôa-Viagem; Ludke,Maria do Carmo Mohaupt Marques; Lopes,Cláudia da Costa; Arruda,Emmanuele Maria Florêncio de; Lopes,Elainy Cristina; Oliveira,Camilla Roana Costa de; Oliveira,Cláudio José Parro de.
ABSTRACT The objective of this study was to evaluate levels of inclusion of an enzyme complex (EC) in corn- and soybean meal-based diets for laying hens on the digestibility of nutrients and energy. A metabolism trial was conducted using 75 Dekalb Brown laying hens at 26 weeks of age, which were distributed into five treatments with five replicates in a completely randomized design. The ingredients used in the diets received an additional (enriched) 3% methionine, lysine, cysteine, threonine, tryptophan, and metabolizable energy and 33.3% phosphorus. Treatments consisted of diets including 0, 150, 200, 250, or 300 mg.kg‒1 EC. We determined apparent metabolizable energy (AME); nitrogen-corrected AME (AMEn); apparent metabolizability coefficients of dry...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Digestibility; Enzymes; Hens; Nutrients.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100503

Intermittent lighting programs for layers with different photophases in the beginning of the laying phase
Provedor de dados: 65
Autores: Yuri,Flavio Manabu; Souza,Cleverson de; Schneider,Aline Felix; Gewehr,Clóvis Eliseu.
ABSTRACT: It was possible to evaluate the effect of continuous and intermittent lighting programs with different photophases on the performance and eggs quality of laying hens, applied to the beginning of the laying phase. The authors used 420 Hy-line Brown laying hens with 21 weeks of age, bred on bedding and submitted for six periods of 28 days between the solstice of summer and winter. The three lighting programs were: (PIC) 16 hours of continuos light, intermittent program with initial and final photophases of 15 minutes (PII15) and an intermittent program with initial and final photophases of 30 minutes (PII30). A completely randomized design with ten repetitions of 14 birds was used. The mean values were subjected analysis of variance and analyzed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scotoperiod; Photophase; Photoperiod; Hens.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001102012

PRODUCTION OF OVOGONIA BY GERMINATIVE EPITHELIUM OF THE OVARY AT SOME MAMMALIA AND BIRDS
Provedor de dados: 65
Autores: Sincai,Mariana; Marcu,Adrian.
The studies were effected on ovaries from sows, cows, bitches, dous and hens. Our investigations revealed the generation of cellular rows of germinative epithelium into the cortex not only during the embrionary period but also in the adult ovary. The histological investigations revealed an intense proliferative process of the germinative epithelium of adult ovary which generated groups of ovogonia under the lamina basalis. From ovogonia developed oocytes and then ovarian follicles. The cause for the proliferation of ovary germinative epithelium could be: the multiple folliculary dehiscences, the premature degeneration of ovarian follicles and formation of the corpus luteum, phenomena that reduce continually the number of embrionary ovogonia.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovary; Epithelium; Mammalian; Hens; Proliferation; Ovogonia; Oocytes; Ovarian follicles.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000300018