Roosters
Mostrando 1-12 de 43 artigos, teses e dissertações.
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1. Amino Acid Digestibility of Feed Ingredients in Cecectomized Adult Roosters
ABSTRACT A digestibility assay was conducted in order to determine the digestibility coefficients (DC) of amino acids of feed ingredients in cecectomized adult roosters. In total 48 cecectomized adult roosters were used to assess the coefficient of digestibility of 7 ingredients: corn, soybean meal, soybean concentrate, corn gluten meal, wheat bran, peanut m
Braz. J. Poult. Sci.. Publicado em: 14/11/2019
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2. EFFECT OF ANTIOXIDANT SUPPLEMENTATION IN DIETS OF ROOSTERS DURING THE POST-PEAK PHASE ON REPRODUCTION AND PRODUCTION CHARACTERISTICS OF OFFSPRING
Resumo O objetivo foi avaliar o efeito da suplementação de antioxidantes em dietas para reprodutores machos de frangos de corte na fase pós-pico sobre características reprodutivas e muscular da progênie. O experimento foi conduzido no matrizeiro de uma agroindústria local. Os tratamentos consistiram em uma dieta controle e uma dieta suplementada com bl
Ciênc. anim. bras.. Publicado em: 24/10/2019
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3. Phenotypic diversity between Brazilian fighting cocks and naturalized roosters
ABSTRACT The present study was carried out to evaluate the phenotypic diversity between fighting cocks; roosters of the naturalized ecotypes Graúna Dourada, Brejeira, Teresina, and Nordestina; roosters of the Sertaneja genetic (synthetic) group; and family-farmed roosters via descriptive and multivariate analyses. The qualitative traits evaluated by descrip
R. Bras. Zootec.. Publicado em: 27/06/2019
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4. Effect of an Organic Trace Mineral Premix on the Semen Quality, Testicular Morphology and Gene Expression Related to Testosterone Synthesis of Male Broiler Breeders
ABSTRACT In order to investigate the effect of organic trace minerals premix (OTM) on the reproductive performance of breeder roosters, a total of 240 San Huang roosters (23 weeks of age) were randomly divided into two treatments with six replicates of 20 roosters each. The first group (n = 120) was fed a basal diet containing an inorganic trace minerals pre
Rev. Bras. Cienc. Avic.. Publicado em: 2017-09
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5. Presence of roosters in an alternative egg production system aiming at animal welfare
ABSTRACT The objective of this study was to evaluate the effect of the presence of roosters on welfare and egg production of laying hens reared in an alternative system. Two breeding systems were established: barn 1 - laying hens reared without roosters (4500 birds); and barn 2 - laying hens reared with roosters (4500 layers and 250 roosters). In the poultry
R. Bras. Zootec.. Publicado em: 2017-03
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6. Evaluation of babassu meal in feed for layer hens during the growth phase
Studies were conducted to evaluate the nutritional value and inclusion levels of babassu meal (BM) in the diet of grower layer pullets in substitution to wheat meal. Digestibility, metabolism and growth trials were conducted. Twelve cecectomized roosters were used in the digestibility assay to determine the coefficients of standardized digestibility of amino
Rev. Bras. Cienc. Avic.. Publicado em: 2014-06
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7. Histomorphological changes by epididymal lithiasis in roosters
Epididymal lithiasis (EL) histopathology is described using light and electronic microscopy in roosters (Gallus gallus domesticus) naturally affected by EL in Minas Gerais, Brazil. The histologic and morphological changes by EL in roosters was performed regarding cellular and subcellular details through light and electron microscopy. Efferent ductules epithe
Rev. Bras. Cienc. Avic.. Publicado em: 2014-03
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8. Determination of true digestible amino acids of feedstuffs utilizing cecectomized roosters
The objective of this study was to estimate the true digestibility coefficients of amino acids and digestible amino acid values of some poultry feedstuffs. The feedstuffs were: babassu meal, sunflower meal, corn gluten meal, babassu starchy meal, meat and bone meal, common beans, pearl millet and residues of cookies, pasta and bread. The precise feeding meth
R. Bras. Zootec.. Publicado em: 2012-09
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9. Performance of broilers fed digestible amino acids based diets obtained from cecectomized roosters and broilers
This experiment was carried out to evaluate the performance of broilers fed ration formulated based on digestible amino acids obtained with cecectomized roosters and broilers at different ages. A total of 300 Ag Ross 508 broiler chicks aging one to 21 days was distributed into 30 experimental units of ten broilers each (five birds of each sex) in six batteri
Revista Brasileira de Zootecnia. Publicado em: 2011-11
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10. Estimates of true amino acid digestibilities in feed ingredients using precision-fed, cecectomized roosters.
O objetivo deste trabalho foi estimar os coeficientes de digestibilidade verdadeira dos aminoacidos de oito ingredientes alternativos para alimentacao de galos cecotomizados. Vinte e sete galos Leghorne de crista inteira foram usados para estimar os coeficientes de digestibilidade verdadeira dos aminoacidos (TAAD) de oito alimentos. A alimentacao precisa (fo
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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11. CANTAXANTINA E 25-HIDROXICOLECALCIFEROL E SEUS EFEITOS SOBRE OS ASPECTOS REPRODUTIVOS DE GALOS / EFFECTS OF CANTHAXANTHIN AND 25-HYDROXYCHOLECALCIFEROL ON REPRODUCTIVE ASPECTS OF MALES ROOSTERS
Com o objetivo de avaliar o desempenho e as características seminais de galos da raça White Plymouth Rock, alimentados com dietas contendo Cantaxantina e 25-hidroxicolecalciferol, foi conduzido um experimento no Laboratório de Avicultura do Departamento de Zootecnia da Universidade Federal de Santa Maria. Foram utilizados 80 galos White Plymouth Rock de 4
Publicado em: 2010
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12. Epididymal lithiasis in Gallus gallus domesticus
A study on the occurrence of epididymal lithiasis (EL) in Gallus gallus domesticus of different breeds and from different geographical regions of Brazil was carried out. Forty breeding roosters were collected in the states Santa Catarina, São Paulo, Minas Gerais, Espírito Santo and Goiás, representing two specific pathogen free Leghorn lines (SPF), one co
Revista Brasileira de Ciência Avícola. Publicado em: 2009-03