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| Registros recuperados: 59 | |
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| Zacatula Mier, Heriberto. |
| En la alimentación humana, la carne es una parte importante de la dieta, representa aproximadamente 11% del total del consumo de alimentos. La carne de pollo, por su alto valor nutrimental, bajo costo y alta disponibilidad, es uno de los productos de origen animal de mayor consumo y aceptación. Lo que ha resultado que a nivel mundial, en los últimos 30 años su producción se haya cuadruplicado, mientras que la de otras especies, como la de cerdo, sólo ha duplicado su volumen (FAO, 2007). En las últimas décadas una parte importante de la investigación en el ámbito de la nutrición animal se ha dirigido a mejorar el valor nutritivo de los alimentos de origen animal, para ofrecer al consumidor un producto de acuerdo a su demanda y necesidades, con... |
| Tipo: Tesis |
Palavras-chave: Broiler chickens; Oregano oil; Lipid oxidation; Malondialdehyde; Lippia gravenolus. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1169 |
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| Kobashigawa,Estela; Corassin,Carlos Humberto; Franco,Larissa Tuanny; Uliana,Rômulo Dutra; Oliveira,Carlos Augusto Fernandes de. |
| ABSTRACT: The aim of the present study was to assess the occurrence of aflatoxins (AFs) and fumonisins (FBs) in feed ingredients (corn and soybean meal) and finishing feed in a broiler operation system, as well was to evaluate their effect on the productivity of 20 batches of broilers produced and the histology status of broilers’ liver after slaughter. Corn samples presented the highest frequencies of AFs and FBs, at mean levels of 29.1 and 2,100µg/kg, respectively. Soybean samples presented mean levels of 1.5 and 70µg/kg for AFs and FBs, respectively. Batches of broilers receiving feed containing FB levels higher than 1,000µg/kg had lower weight gain and higher mortality rates, while those fed rations with AFs equal or above the limit of quantification... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycotoxins; AFB1; FB1; Broiler chickens; Productivity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200652 |
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| Dookeran, Mark M.; Baccus-Taylor, Gail S.H.; Akingbala, John A.. |
| International studies and epidemiological data have revealed a strong association between salmonellosis and chicken meat. This association provides serious challenges for food safety and international trade. Microbiological Risk Assessment is a food safety tool that is used to determine the incidence of food borne illnesses. The procedure identifies a microbiological hazard in the entire food continuum (from farm to fork), and estimates the adverse effects to human health, of ingesting the microbial hazard. The Assessment integrates four steps, hazard identification, hazard characterisation, exposure assessment and risk characterisation, to produce a practical estimate of risk. In each step, knowledge of the prevalence and concentration of the pathogen,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Broiler chickens; Salmonellosis; Microbiological risk; FAO/WHO; CAREC; CAES; Agribusiness; Food Consumption/Nutrition/Food Safety; Health Economics and Policy; International Development. |
| Ano: 2007 |
URL: http://purl.umn.edu/36952 |
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| Saracila,M; Criste,RD; Panaite,TD; Vlaicu,PA; Tabuc,C; Turcu,RP; Olteanu,M. |
| ABSTRACT The 21 days feeding trial was conducted on 90, Cobb 500 broilers (aged 14 days), assigned to 3 groups (C, E1 and E2) housed in an experimental hall at 32° C constant temperature and 23 h light regimen. During the growth period (14-35 days), the conventional diet (C) had corn and soybean meal as basic ingredients. Unlike the conventional diet formulation (C), the diet formulations for the experimental groups also included 0.005% Artemisia annua oil (E1) and 0.005% Artemisia annua oil plus 1% Artemisia annua powder (E2). Six broilers per group were slaughtered at 35 days of age in order to measure the weight of the carcass and internal organs of broilers, and samples of intestinal and caecal content were collected for bacteriological assessment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemisia annua; Broiler chickens; Growth performance; Gut microbiota; Heat stress. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400825 |
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| Soares da Silva Araújo,Cristiane; Martinez Baraldi Artoni,Silvana; Francelino Araújo,Lúcio; Jeferson Quirino Lousada,Mário; Mack Junqueira,Otto; Roque Rodriguez,Anita Isabel. |
| Two experiments were conducted in order to evaluate the effects of different dietary amino acid and calcium profiles on the bone characteristics of two chicken strains (Avian Farms and Cobb) during the starter phase. At the end of each experiment, 2 chickens of each replicate were sacrificed and their tibiae were collected for analysis of following bone characteristics: bone measurements (weight, length and thickness of the compact and spongy layers) and bone density (bone densitometry). A total of 540 birds were used in each experiment, divided into fully randomized blocks with a 3 x 2 factorial schemes, i. e., 3 amino acid profiles (methionine, lysine and threonine ­ 100%, 125% and 150% of NRC recommendations, 1994) and 2 calcium levels (75% and... |
| Tipo: Journal article |
Palavras-chave: Amino acid; Bone density; Broiler chickens; Calcium. |
| Ano: 2003 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200001 |
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| Guerreiro,EN; Giachetto,PF; Givisiez,PEN; Ferro,JA; Ferro,MIT; Gabriel,JE; Furlan,RL; Macari,M. |
| In the present study we have investigated the effects of heat acclimation on brain and hepatic Hsp70 protein levels and body temperature of broiler chickens in response to gradual heat stress. Two groups of broilers were raised up to 47 days of age under distinct temperature conditions: thermoneutral (TN, according to bird age) or hot environmental (HS, 31-33°C). At 46 days of age, the birds reared at high ambient temperature were transferred to thermoneutrality conditions. After 18 h, these birds and the birds reared at thermoneutral temperature were submitted to gradual heat stress in a climatic chamber so that environment temperature was increased from 28 to 40ºC at a rate of 2ºC/h. Colonic temperature was measured using a thermometer sensor probe at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acclimation; Broiler chickens; Heat shock protein; Heat stress. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400002 |
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| Azad,SK; Shariatmadari,F; Torshizi,MAK; Chiba,LI. |
| ABSTRACT This experiment was conducted to investigate the effect of feeding different concentrations and sources of zinc (Zn) on the growth performance, tissue mineral status, bone morphology and immunity responses in 0-4-week broiler chickens. Four hundred and forty 1-d-old broiler chickens were assigned randomly to 11 dietary treatments with 4 cages per treatment and 10 broiler chickens per cage in a completely randomized design. Dietary treatments were: corn-soybean meal basal diet (negative control), basal diet supplemented with 5 g yeast/kg (yeast), and basal diet supplemented with 20, 50, or 80 mg of added Zn/kg as ZnSO4, Zn-Met, or Zn-yeast in a 3 x 3 factorial arrangement of treatments. The results showed that broilers fed Zn supplemented diets had... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chickens; Growth performance; Bone characteristic; Immunity; Zinc. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200322 |
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| Silveira,T.B.; Souza,S.F.; Medeiros,L.S.; Freitas,H.J.; Gracci,R.E.; Miglino,M.A.; Carvalho,Y.K.. |
| ABSTRACT In this essay, we quantify the concentration of collagen fibers in broiler chickens exposed to increasing concentrations of cupuacu seed by-product. Collection of material was carried out in five chickens per treatment at 70 days old in the groups: control, 5% and 10% inclusion of cupuacu seed by-product. Fragments of Thoracic Pectoralis (PT) and Iliotibial lateralis (ITL) muscles were prepared for light and electronic microscopy. The amount of collagen fibers in the muscle groups was 1.08±0.61% in the PTC group; 6.24±2.58% in PT5% and 7.30±2.75% in PT10%. In the Iliotibial Lateralis groups, the results were 6.96±3.14% in the ITLC; 7.43±4.22% in the ITL5% and 8.66±2.35% in ITL10%. The amount of collagen fibers in the ITL5% and ITL10% groups showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chickens; Collagen; Theobroma grandiflorum. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000300791 |
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| Oliveira,JE; Albino,LFT; Rostagno,HS; Páez,LE; Carvalho,DCO. |
| Three experiments were conducted to determine the nutritional requirements of potassium (K) for male Ross broiler chickens, from 8 to 21, 22 to 42 and 43 to 53 days of age. The following parameters were evaluated: body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR). In each experiment, a completely randomized experimental design was used, with six treatments (K levels), and six, eight and eight numbers of replicates, and eight, five and four birds per pen, respectively. The experimental diets were basal diets deficient in K but supplemented with K carbonate to result in levels of 0.30, 0.44, 0.58, 0.72, 0.86 and 1.00% K. Estimated requirements for BWG were 0.628, 0.714 and 0.798% K, for the periods 8-21, 22-42 and 43-53 d, respectively. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chickens; Ion; Mineral; Potassium; Requirement; Weight gain. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100006 |
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| Garcia,RG; Mendes,AA; Sartori,JR; Paz,ICLA; Takahashi,SE; Pelícia,K; Komiyama,CM; Quinteiro,RR. |
| The traditional method of total excreta collection was applied, using 30 to 40 day old male Ross 308 broiler chickens. One hundred and eight broiler chickens were used, randomly assigned to a 3x3 factorial experimental design. The room temperatures were 14 C (cold), 25 °C (thermoneutral) and 32 °C (hot) and the three diets were 100% maize, 100% sorghum with tannin and 100% sorghum without tannin, with four replicates of each. The digestibility coefficients for the dry matter, crude protein, crude fibre, neutral detergent fibre, acid detergent fibre, ether extract, mineral matter and nitrogen-free extract were determined. It was observed that all the digestibility coefficients were higher in the hot chamber and lower in the cold chamber, and that these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chickens; Digestibility; Sorghum; Tannin. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100007 |
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| Furlan,RL; Faria Filho,DE de; Rosa,PS; Macari,M. |
| Nutrition for broilers under high temperatures is extremely important for brazilian broiler chicken industry because the amounts of consumed nutrients and environmental temperature have great effects on bird performance and carcass quality. Among diet nutrients, protein has the highest heat increment; thus, during many years, diets with low protein level were recommended in order to reduce heat production in broiler chickens under heat stress. However, reports have shown that low-protein diets have negative effects on broiler performance when environmental temperature is high, because during heat stress, low food intake associated to a low diet protein induce amino acid deficiencies. Other studies have shown that broilers fed low-protein diets increase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chickens; Crude protein; Heat stress; Heat increment; Heat production. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200001 |
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| Souza,PA; Kodawara,LM; Pelicano,ERL; Souza,HBA; Oba,A; Leonel,FR; Norkus,EA; Lima,TMA. |
| The present study evaluated the effect of different deboning times on the quality of broiler breast meat. Seventy-two broiler breasts were evaluated. They were distributed in a completely randomized experimental design, with six treatments, six repetitions and two birds per parcel. The treatments were denominated as follows: A - deboning immediately after chilling, B - deboning 1 h after chilling, C - deboning 2 h after chilling, D - deboning 3 h after chilling, E - deboning 4 h after chilling, and F - deboning 24 hours after chilling. Lowest pH values (p<0.05) were seen when deboning was performed 24 h after carcass chilling (pH=6.00) in comparison to deboning at 0 h (6.69) and 1 h (6.42) after chilling. R values were inversely proportional to pH... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chickens; Deboning time; Meat quality; R value; Shear force. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200010 |
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| Rosa,PS; Faria Filho,DE; Dahlke,F; Vieira,BS; Macari,M; Furlan,RL. |
| In order to evaluate the effect of energy intake and broiler genotype on performance, carcass yield, and fat deposition, 600 one-day-old male chicks from two different genetic groups (AgRoss 308 - commercial line and PCLC - Embrapa non-improved line) were fed diets with different metabolizable energy level (2950, 3200 and 3450 kcal/kg). A completely randomized experimental design in a 2X3 factorial arrangement with four replications of 25 birds per treatment was applied. In order to ensure different energy intake among treatments within each strain, feed intake was daily adjusted by pair-feeding schemes. AgRoss 308 broilers had better performance and carcass yield, and presented lower abdominal fat deposition rate. In both genetic groups, the highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allometric growth; Broiler chickens; Carcass composition; Energy intake; Genetic strains. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200007 |
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| Cruz,VC; Ducatti,C; Araújo,PC; Sartori,JR; Piccinin,A. |
| The objective of the present study was to evaluate the effect of the dietary inclusion of poultry viscera meal (VM) on broiler performance and carcass, parts, and abdominal fat yields in broilers by replacing a diet containing VM with a strictly vegetable diet and vice-versa. A number of 720 one-day-old broiler chicks were randomly distributed in 6 groups: G1-basal diet (BD) - corn and soybean based meal, with no VM from 1 to 42 days of age, G2- 8% VM diet from 1 to 42 days, G3- BD from 1 to 21 and 8% VM diet from 22 to 42 days, G4- BD from 1 to 35 and 8% VM diet from 36 to 42 days, G5- 8% VM diet from 1 to 21 days and BD from 22 to 42 days, G6- 8% VM diet from 1 to 35 and BD from 36 to 42 days. Average body weight, weight gain, feed intake, feed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal byproducts; Broiler chickens; Carcass yield; Performance; Poultry viscera meal. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300006 |
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| Hosseini,SJ; Kermanshahi,H; Nassirimoghaddam,H; Nabipour,A; Mirakzeh,MT; Saleh,H; Kazemifard,M. |
| Abstract An experiment was conducted to investigate the effects of hydroalcoholic extract of Withania coagulans (WC) fruit and 1.25-dihydroxycholecalciferol (1.25-(OH)2 D3) on bone mineralization, mechanical and histological properties of male broiler chickens at 21 and 42 d of age. A total of six hundred male day-old Ross 308 broiler chickens were randomly distributed according to a completely randomized experimental design in a 2×3×2 factorial arrangement with 12 treatments of five replicates of 10 birds each. Treatments consisted of two basal diets (positive control with adequate Ca level and negative control with 30% less Ca), three levels of WC (0, 100, or 200 mg/kg diet), and two levels of 1.25-(OH)2 D3 (0 or 0.5 µg/kg diet). Birds were housed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 1.25-dihydroxycholecalciferol; Withania coagulans; Bone; Broiler chickens. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100073 |
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| Registros recuperados: 59 | |
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