Consulta: creatorFacets:"Queiroz,SA"
Registros recuperados: 8
Data/hora: 13/06/2024 01:17:48

Effect of crude protein levels and organic selenium supplementation in the diets fed during the breeding season on reproductive parameters of red-winged tinamous (Rhynchotus rufescens)
Provedor de dados: 89
Autores: Felipe,L; Santos,EC; Tavian,AF; Góes,PAA; Moraes,VMB; Tonhati,H; Boleli,IC; Malheiros,EB; Barnabé,VH; Queiroz,SA.
There is little information on the nutrition of red-winged tinamous (Rhynchotus rufescens) reared in captivity, and their nutritional requirements still need to be determined. This study aimed at determining dietary crude protein requirements and testing four organic selenium supplementation levels in the diet of red-winged tinamous during the breeding season. Birds were housed in a conventional broiler house divided in 16 boxes with one male and three females each. Iso-energy (2800kcal ME/kg) pelleted feeds, based on corn and soybean meal, were supplied in tube feeders. In the first experiment, treatments consisted of four different diets containing different crude protein (CP) contents (15, 18, 21, or 24%) and in the second experiment, the four diets...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg weight; Fertility; Nutrition; Semen quality; Shell thickness.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100010

Aggressive behavior in the genus Gallus sp
Provedor de dados: 89
Autores: Queiroz,SA; Cromberg,VU.
The intensification of the production system in the poultry industry and the vertical integration of the poultry agribusiness have brought profound changes in the physical and social environment of domestic fowls in comparison to their ancestors and have modified the expression of aggression and submission. The present review has covered the studies focusing on the different aspects linked to aggressiveness in the genus Gallus. The evaluated studies have shown that aggressiveness and subordination are complex behavioral expressions that involve genetic differences between breeds, strains and individuals, and differences in the cerebral development during growth, in the hormonal metabolism, in the rearing conditions of individuals, including feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggressiveness; Behavior; Fighting birds; Gallus sp.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100001

Efeito da forma física da ração sobre a porosidade, espessura da casca, perda de água e eclodibilidade em ovos de perdiz (Rhynchotus rufescens)
Provedor de dados: 89
Autores: Nakage,ES; Cardozo,JP; Pereira,GT; Queiroz,SA; Boleli,IC.
O objetivo do presente estudo foi avaliar se a forma física da ração (farelada e peletizada) afeta a porosidade e espessura da casca, e porcentagem de perda de água e eclodibilidade de ovos de perdiz. Os ovos foram coletados logo após a postura e separados em diferentes intervalos de peso (35-45g, 46-50g, 51-55g, 56-60g e 61-70g), sendo 10 ovos/classe/ração. O número de poros das cascas foi avaliado nas regiões apical, equatorial e basal dos ovos. Utilizou-se um micrômetro digital para a mensuração da espessura das três regiões da casca dos ovos, a partir dos quais obteve-se a espessura média por ovo. Os ovos para avaliação da eclodibilidade e porcentagem de perda de água do ovo até a transferência para o nascedouro (16º dia) foram pesados, desinfectados,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forma física; Ração; Porosidade; Espessura da casca; Eclodibilidade; Perda de água.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300007

Reproductive and behavioral aspects of red-winged tinamous (Rhynchotus rufescens) in groups with different sex ratios
Provedor de dados: 89
Autores: Cromberg,VU; Stein,MS; Boleli,IC; Tonhati,H; Queiroz,SA.
The aim of this research study was to evaluate the reproductive performance of tinamous submitted to five different male:female ratios. The study was carried out with 72 birds in a randomized experimental design with 4 replications. Tinamous were housed in cages, using the ratios of one (1:1), two (2:1), three (3:1) and four (4:1) females per male, and also one male was housed with three females individually (3R:1), in a rotational system. Reproductive records of the breeding season from September 2004 to March 2005 were used. The reproductive traits studied were: number of eggs laid, fertility, and percentage of eggs damaged and cracked by pecking. Nonparametric analyses of these traits were performed using Kruskal-Wallis test. Two replications of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agonistic behavior; Domestication; Dominance; Laying birds; Tinamous.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300004

Models for the analysis of growth curves for rearing tinamous (Rhynchotus rufescens) in captivity
Provedor de dados: 89
Autores: Tholon,P; Queiroz,SA.
Growth curves models provide a visual assessment of growth as a function of time, and prediction body weight at a specific age. This study aimed at estimating tinamous growth curve using different models, and at verifying their goodness of fit. A total number 11,639 weight records from 411 birds, being 6,671 from females and 3,095 from males, was analyzed. The highest estimates of a parameter were obtained using Brody (BD), von Bertalanffy (VB), Gompertz (GP,) and Logistic function (LG). Adult females were 5.7% heavier than males. The highest estimates of b parameter were obtained in the LG, GP, BD, and VB models. The estimated k parameter values in decreasing order were obtained in LG, GP, VB, and BD models. The correlation between the parameters a and k...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth parameters; Growth evaluation; Non-linear models; Wild birds.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100004

EFFECT OF LITTER SUBSTRATES ON THE PERFORMANCE, CARCASS TRAITS, AND ENVIRONMENTAL COMFORT OF RED-WINGED TINAMOU (RHYNCHOTUS RUFESCENS)
Provedor de dados: 89
Autores: Nunes,JC; Carvalho,MM; Sugui,JK; Queiroz,FA; Santana,AE; Hata,ME; Aiura,ALO; Oliveira,JA; Queiroz,SA.
ABSTRACT The study aimed at evaluating the effect of litter substrates on the performance, carcass traits, and environmental comfort of red-winged tinamou (Rhynchotus rufescens). In this experiment, 160 birds, with 100 and 300 days of age, were housed into 20 pens, and distributed according to a completely randomized experimental design into five treatments with four replicates of eight birds each. Treatments consisted of five litter substrates: wood shavings, rice husks, peanut hulls, grass hay, or sand. Feed intake; weight gain; breast, hock, and footpad lesions; back feathering; total meat production; carcass and parts yield; and leukocyte counts were evaluated. Litter substrates were analyzed for dry matter content, standard microbial count, ammonia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grass hay; Leukocyte counts; Litter temperature; Radiant heat load; Sand.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500041

Genetic and Environmental Effects on Tonic Immobility Duration of Red-Winged Tinamou Applying Survival Analysis
Provedor de dados: 89
Autores: Hata,ME; Caetano,SL; Boleli,IC; Queiroz,SA.
ABSTRACT Fear behavioral studies provide knowledge on animal welfare, and fearful behaviors can be used as selection criteria of individuals adapted to intensive rearing system. The survival analysis methodology was applied to estimate tonic immobility (TI) duration, as an indicator of fear, of red-winged tinamous (Rhynchotus rufescens) reared in captivity and to determine if TI is genetically influenced. A number of 539 birds born between 2006 and 2010 were evaluated. The exploratory data analysis was performed using the Kaplan-Meier estimate (KM), and the covariates were then fit to a Cox model, considering month of observation nested within year of birth and body weight as fixed effects and the random effect of sire as frailty term. In order to predict...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Behavioral trait; Genetic parameters; Survival kit; Wild birds.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200287

Genetic relatedness among wild, domestic and Brazilian fighting roosters
Provedor de dados: 89
Autores: Rodrigues,FP; Queiroz,SA; Duarte,JMB.
Except for the meat- and egg-type strains used in commercial poultry farms in Brazil, there are no scientific reports about the origin of birds from the genus Gallus that have been introduced in this country with domestication or fighting purposes. Therefore, the aim of this study was to identify the position of the Brazilian Game Bird in the phylogenetic tree of the genus Gallus by nucleotide sequence analysis of the mitochondrial DNA D-loop region. The results indicate that fighting roosters comprise two different clusters within the species Gallus gallus domesticus. One of the clusters is related to the wild ancestors, while the other one is more related to the birds raised by the poultry industry. In conclusion, Brazilian fighting roosters have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fighting roosters; Gallus gallus; Phylogenetic tree; Wild roosters.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200003