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EFFECT OF LITTER SUBSTRATES ON THE PERFORMANCE, CARCASS TRAITS, AND ENVIRONMENTAL COMFORT OF RED-WINGED TINAMOU (RHYNCHOTUS RUFESCENS) 89
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
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Genetic and Environmental Effects on Tonic Immobility Duration of Red-Winged Tinamou Applying Survival Analysis 89
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
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Meat and carcass traits of the red-winged tinamou (Rhynchotus rufescens) 89
Queiroz,FA de; Carvalho,MM de; Sugui,JK; Nunes,J; Felipe,L; Santos,EC dos; Tonhati,H; Boiago,MM; Hata,ME; Tholon,P; Queiroz,SA de.
Tinamou (Rhynchotus rufescens) is a native bird of the Brazilian fauna and has great potential to become a domesticated species. From this perspective, the objective of this study was to evaluate the carcass and main parts yield and to assess meat quality of that bird. Two trials, one studying stocking density and the other litter materials, lasting 60 days each, were conducted. The studied traits were evaluated in two birds/replicate/treatment. Performance was evaluated by the least square method. The results showed that bird age at slaughter significantly influenced carcass and breast yields (p<0.05). Mean carcass, breast, thighs+drumstick and wing yields were 86.50±2.78%, 32.84±1.50%, 27.71±1.44%, and 13.21±0.94%, respectively. Shear force, pH, water...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carcass yield; Lightness; PH; Shear force; Water holding capacity.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200006
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