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| Registros recuperados: 1.268 | |
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| Li,M; Wu,J; Chen,Z. |
| ABSTRACT One-day old chicks were randomly distributed into acute heat stress (AHS) or persistent heat stress (PHS) groups. Each group was further divided into control (CK), and three AHS ages (1, 2,or 3 weeks of age) experimental subgroups. The chicks in AHS subgroups were submitted to acute heat stress (40oC for two hours between 12:00 and 14:00 hours during the weekend) and the effects of heat stress on several daily behaviors were observed. At 8 days of age, the chicks of PHS subgroups were submitted to heat stress (40oC daily). The heat treatment ceased during the weekends and the effects on the behavior were observed three times daily for three consecutive days. The results showed that, compared with the CK group, the duration and frequency of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heat stress; Broiler behavior; Behavioral observations; Wenchang chicken. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400559 |
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| Khan,U; Hussain,J; Mahmud,A; Khalique,A; Mehmood,S; Badar,IH; Usman,M; Jaspal,MH; Ahmad,S. |
| ABSTRACT Present study evaluated carcass and meat quality attributes of broilers, broiler breeders and Aseel chickens. Sixty birds from each chicken genotype (broiler, broiler breeder and Aseel chickens; five-wk-old broilers and 60-wk-old Aseel chickens and broiler breeders) were evaluated. Birds were maintained under similar environment for 21 days, and then slaughtered to analyze their carcass qualitative and organoleptic characteristics. No carcass yield differences were detected among genotypes. Aseel chickens had heavier neck, followed by broiler breeder and broiler (p<0.0001). Higher liver (p<0.0001), intestine (p<0.0001), ribs and back (p=0.0014) yields were obtained in broilers than in broiler breeders and Aseel chickens. Females showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aseel; Breeder; Broiler; Carcass traits; Meat quality. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100316 |
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| Muramatsu,K; Maiorka,A; Dahlke,F; Lopes,AS; Pasche,M. |
| The present study evaluated the effect of feed particle size, thermal processing different levels of fat inclusion and of moisture addition on the amount of gelatinized starch in a corn-soybean broiler diet. The different processing factors were combined in a 2 x 4 x 4 x 2 factorial arrangement in a three randomized block design consisting of three production series: two particle sizes (coarse: 1041 microns and medium: 743 microns), four fat inclusion levels at the mixer (15, 25, 35, and 45 g/kg of feed), four moisture addition levels in the conditioner (0, 7, 14, and 21g/kg of feed), and two thermal processing treatments (conditioning-pelleting or conditioning-expanding-pelleting) which resulted in 64 different processed feeds. For the determination of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conditioning; Expander; Gelatinization; Moisture; Starch; Fat. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400005 |
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| Castillo,LRI; Portillo,LJJ; León,FJ; Gutiérrez,DR; Angulo,EMA; Muy-Rangel,MD; Heredia,JB. |
| ABSTRACT This research evaluated the nutritional, nutraceutical, antimicrobial, as well as the growing promoter effect of Moringa oleifera (MOR) leaves flour in fodders for fattening Japanese quails. The antimicrobial activity was measured using the method of Kirby-Bauer. A completely random design with 4x2 factorial arrangement was used, fodders included 0, 7, 14, and 21% of MOR, with and without Virginiamycin (100 ppm), during 35 d of fattening, 480 one-day old unsexed quails were used, each treatment had 5 replicates with 12 quails/cage. MOR inhibited the growth of bacteria gram (+) and gram (-). The inclusion of MOR in the period from 1 to 14 d inhibited the weight gain (p<0.001), increased feed conversion (p<0.001), without affecting the feed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AGP; Antioxidant; Coturnix; Moringa oleifera; Phenolic.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100015 |
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| Calini,F; Sirri,F. |
| Vertical integration in poultry industry strongly emphasizes the importance of cost control at all levels. In the usual broiler production operations, the costs involved with the production of the hatching egg or the day old chick are negligible if seen in the perspective of the cost per kg of live bird. From a research point of view, anyway, the greatest attention is usually given to the performance of broiler breeders, and most of the research in the field is focused on the improvement of their relative performance, mainly in terms of saleable chicks produced per hen, while less attention has been given to the quality of the chick and to the improvement of its growth performances, even if these last parameters have an effective impact on the overall... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler breeder; Progeny; Nutrition. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200001 |
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| Moula,N; Ait-Kaki,A; Leroy,P; Antoine-Moussiaux,N. |
| Quality variations in retail eggs are widely reported. This study aims at assessing the quality of eggs according to the marketing channel in the department of Bejaia (Algeria). In spring and summer 2012, 3330 eggs were bought in 30 stores divided into 3 categories: 10 supermarkets (1146 eggs), 10 public markets (1048 eggs), and 10 shops (1136 eggs). Egg weights differed significantly between marketing channels with 58.9±0.14, 61.2±0.13 and 62.8±0.13 g for public markets, shops and supermarkets, respectively (p<0.001). Although shell thickness was similar for all marketing channels, the proportion of damaged eggs was higher in public markets (9.0%), intermediate in food shops (7.3%) and lower in supermarkets (5.7%; p<0.05). The yolk/albumen ratio was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bejaia; Consumer channels; Egg quality; Egg prices; Marketed table eggs; Egg grades. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400015 |
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| Hada,FH; Malheiros,RD; Silva,JDT; Marques,RH; Gravena,RA; Silva,VK; Moraes,VMB. |
| The objective of this study was to evaluate the performance, carcass and parts yield, and blood changes in broilers fed different protein, carbohydrate, and lipid levels. Birds were fed a commercial diet until seven days of age. On day 8, birds were distributed according to a completely randomized experimental design in a 4 x 2 factorial arrangement (control diet, low protein diet, low carbohydrate diet or low lipid diet vs. supplementation of 0 or 0.3ppm organic selenium) with four replicates of 15 birds each. Broilers fed low protein presented lower body weight, feed intake, and worse feed conversion ratio on day 42, as well as lower carcass and breast yields, higher leg and abdominal fat yields, higher triglyceride and lower uric acid blood levels.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbohydrates; Lipids; Blood parameters; Protein; Selenium. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400014 |
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| Fernandes,BCS; Martins,MRFB; Mendes,AA; Milbradt,EL; Sanfelice,C; Martins,BB; Aguiar,EF; Bresne,C. |
| This study aimed at evaluating the intestinal integrity, using light and scanning electron microscopy (SEM), and the performance of broiler chickens fed additives alternative to antimicrobials. A total of 1080 male chicks were distributed according to a completely randomized experimental design, with six treatments with six replicates of 30 birds each. The following treatments were evaluated: basal diet (control), basal diet supplemented with an antimicrobial, basal diet supplemented with a probiotic, basal diet supplemented with a prebiotic, basal diet with a symbiotic, and basal diet supplemented with organic acids. Weight gain, feed intake, feed conversion ratio and livability were recorded when broiler chickens were 10, 21, 35, and 42 days old. On day... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Scanning electron microscopy; Morphometrics; Intestinal mucosa; Intestinal wall. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400012 |
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| Javid,MA; Abbas,G; Waqas,MY; Basit,MA; Asif,M; Akhtar,MS; Masood,S; Saleem,MU; Qamar,SH; Kiani,FA. |
| ABSTRACT The present study was conducted to evaluate the effects of supplementation of garlic, ginger in the diets of broiler chickens and assessment in terms of feed intake, growth performance and economics of feeding. The results showed that groups supplemented with 0.5% garlic powder and 0.5% ginger powder has shown significant effects on body weight as compared to the control group at day 28. Groups supplemented with 0.5% garlic powder and 0.5% ginger powder show significant increase in body weight than the groups supplemented with 0.25% garlic powder and 0.25% ginger powder. Between different supplemented groups, villus length and width of duodenum and jejunum of birds served with 0.5% garlic powder and 0.5% ginger powder is significantly higher than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ginger; Garlic; Bird performance; Histomorphometry; Small intestine. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200347 |
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| Hatab,MH; Ibrahim,NS; Sayed,WA; Sabic,EM. |
| ABSTRACT A feeding trial was conducted to determine the potential value of replacing 100 % of meat and bone meal (MBM) ingredient as the major animal protein source in Japanese quail diets by 50% and 100% of insect meal derived from S. littoralis Larvae. A total of 360, 7 days-old quail chicks, were randomly divided into three equal groups (120 chicks) with three replicates each. They were offered three different diets 1, 2 and 3, respectively. The Diet 1 contained MBM only as a major source of animal protein, diet 2 had both MBM (50%) and insect meal (50%) while diet 3 contained insect meal (100%). Results: Partial or total replacement of S. littoralis larvae with MBM increased body weight gain and improved feed conversion ratio (p≤0.05). Moreover,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insect meal; Quail chicks; Performance; Hematological; Biochemical indices. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100303 |
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| Sgavioli,S; Filardi,R da S; Praes,M F F M; Domingues,C H de F; Pileggi,J; Andrade,P de C; Boleli,I C; Junqueira,O M. |
| The objective of the present experiment was to compare the performance, egg quality and organ morphometrics of commercial layers submitted to alternative forced molting methods using dietary fibers. The experimental period included the phases of molting, rest, and second laying cycle (six periods of 28 days each). In the trial, 320 commercial Isa Brown layers with 72 weeks of age were distributed, according to a completely randomized experimental design into five treatments with eight replicates of eight birds each, totaling 40 experimental units. Molting was induced by feeding diets with the inclusion of alfalfa or soybean husks at 80% and 60% or feed fasting. Treatments were applied for 14 days. Performance and egg quality parameters were evaluated for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alfalfa; Soybean husks; Egg production; Morphometrics. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400011 |
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| Ribeiro,PAP; Matos Jr,JB; Lara,LJC; Araújo,LF; Albuquerque,R; Baião,NC. |
| An experiment was carried out with 1200 23-week-old white Dekalb commercial laying hens to investigate production responses, egg quality, and energy utilization of laying hens fed different dietary energy levels at the beginning of lay. Birds were housed and divided in five groups of 240 birds according to dietary apparent metabolizable energy corrected for nitrogen (AMEn): 2700 kcal/kg; 2775 kcal/kg; 2850 kcal/kg; 2925 kcal/kg; and 3000 kcal/kg, with six replicates of 40 birds each. Birds were fed the experimental diets based on corn and soybean meal for 17 weeks. Diets were iso-nutritive, except for energy level. Increasing AMEn levels had a negative effect on egg production and egg mass (p≤0.05). AMEn levels did not influence body weight, egg weight, or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy conversion; Egg quality; Laying hens. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400007 |
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| Nie,CX; Zhang,WJ; Ge,WX; Liu,YF; Wang,YQ; Liu,JC. |
| ABSTRACT Fermented cottonseed meal (FCSM) is widely used in poultry diets in China. This study was conducted to investigate the effect of FCSM on lipid-related gene expression in broilers. Initially, 180 broiler chickens (21-days-old, equal number of males and females) were randomly divided into three groups, with six pens per group and 10 birds per pen. The chickens in the control group were fed a diet containing unfermented cottonseed meal, and those in the treatment groups were fed with diets including either CSM fermented by Candida tropicalis (Ct group) or CSM fermented by Candida tropicalis plus Saccharomyces cerevisae (Ct-Sc group) until 64 days old. The results revealed that, compared with the control group (p<0.05), the mRNA expression of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fermented cottonseed meal; Fermented feed; Lipid metabolism; Gene expression; Broilers. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000057 |
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| Pedroso,AC; Franco,SG; Flemming,JS; Borges,SA; Sillus,PP. |
| An experiment was conducted to evaluate the effect of different digestible amino acid profiles on the performance of broilers in two phases: from 1 to 21 days and from 22 to 42 days of age. At the end of the experiment, carcass yield and cut percentages were evaluated. Nine hundred and sixty AgRoss birds were distributed in a randomized block design with four treatments (four digestible amino acid profiles): Rostagno et al. (2000), Baker & Han (1994b), Degussa (1997) and those recommended by AgRoss (2000), with six repetitions and 40 birds per repetition (20 males and 20 females). The results showed that the four diets were able to provide the requirements of the birds, since no significant differences were seen among the treatments on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Carcass yield; Digestible aminoacids; Ideal protein. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100004 |
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| Amaral,LA do. |
| In the poultry industry, the use of water with adequate physical, chemical and microbiological quality it is of fundamental importance. Since many birds have access to the same water source, quality problems will affect a great number of animals. The drinking water plays an important role in the transmission of some bacterial, viral and protozoan diseases that are among the most common poultry diseases. Important factors to prevent waterborne diseases in broiler production are the protection of supply sources, water disinfection and the quality control of microbiological, chemical and physical characteristics. Water is an essential nutrient for birds and therefore quality preservation is fundamental for good herd performance. The farmer may prevent many... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbiological quality; Poultry industry; Water. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400001 |
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| Altaf,MT; Mahmud,A; Mehmood,S; Saima,. |
| ABSTRACT The aim of the present study was to investigate the influence of different growth promoters on broiler performance and intestinal morphology reared under various stocking densities. A total of 900 day old (Ross-308) straight run broilers were randomly divided into fifteen treatment groups according to a completely randomized design. A 5 × 3 factorial arrangement of treatment was employed. Treatments were consisted of four growth promoters (antibiotics, prebiotics, probiotics, and symbiotics) and a control group with three stocking densities (0.046, 0.056, 0.065m2). Each treatment was replicated 6 times with 10 birds in each. Regarding growth performance, feed intake (p=0.0008), body weight (p=0.0085) and feed conversion ratio (p=0.0001) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler growth promoters stocking density; Growth performance; Intestinal histology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400306 |
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| Olteanu,M; Criste,RD; Panaite,TD; Bunduc,V; Panaite,CV; Ropota,M; Mitoi,M. |
| ABSTRACT The 4-week study was conducted with 180 Lohmann Brown layers (52 weeks of age). The layers were assigned to three groups (C, E1 and E2). The basal diet (group C) consisted mainly of corn, soybean meal and corn gluten, and contained 19% crude protein and 11.58 MJ/kg metabolizable energy. The diets for groups E1 and E2 differed from group C by the inclusion of 5% flax meal and of dietary antioxidants. The concentration of α-linolenic acid in the fat of E1 and E2 diets was almost 10 times higher than in group C. E1 diet was supplemented with vitamin E (100 mg/kg feed, DM), while E2 diet was supplemented with 2% grape seed meal (polyphenols: 630.890 µg gallic acid equivalents/g sample; flavonoids: 5.065 µg rutin equivalents/g sample; antioxidant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eggs; PUFAs; Antioxidants; Grape seed meal; Quality. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400655 |
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| Boostani,A; Ashayerizadeh,A; Mahmoodian,Fard HR; Kamalzadeh,A. |
| This experiment was conducted to evaluate the effect of some feed restriction regimes on the performance, carcass characteristics and hematological values of broiler chickens. A number of 480 one-day-old Cobb broilers were distributed into 24 floor pens and reared for 42 days. A basal diet was formulated according to the NRC (1994) recommendations for starter (1-11 d), grower (12-28 d) and finisher (29-42 d) periods. The restricted birds were fed 8 h per day from 7 to 21 (R7-21d), 14 to 28 d (R14-28d) or from 21 to 35d (R21-35d), while the control birds were fed ad libitum. Birds and feed were weekly weighed, and dead birds were submitted to necropsy to determine the cause of death. At the end of experiment, blood samples were taken from 3 birds per pen,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ascites; Broiler; Feed restriction; Hematological indices; Performance. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300006 |
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| Registros recuperados: 1.268 | |
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