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Effect of garlic powder on performance and lipid profile of broilers  [PDF]
Kamal Jamal Issa, J. M. Abo Omar
Open Journal of Animal Sciences (OJAS) , 2012, DOI: 10.4236/ojas.2012.22010
Abstract: This experiment was conducted to investigate the effect of feeding garlic powder (GP) on the performance, digestibility, digestive organs, carcass cuts and lipid profile of broilers. A total of 270 day-old Cobb-500 chicks were used in the experiment. Birds were partitioned into three experimental groups of 90 birds in each. Each treatment was composed of 6 replicates with 15 birds in each. The control group was fed with a commercial starter and finisher diet. The second and third groups were supplemented with GP at the rate of 0.2% and 0.4% respectively. In the last week of experiment, 18 birds from each experimental group (3 birds per replicate) were used in a metabolic trial. At the time of termination of the experiment, the same number of birds were killed for digestive organs and carcass components measurements. Blood samples from 3 birds per replicate were collected on 3rd, 5th and 6th week post feeding from wing vein for blood lipid profile determination. Total cholesterol (COL), triglycerides (TG), high density lipoprotein (HDL), low density lipoprotein (LDL) levels were determined. Results of this study showed that GP had no significant effects on broilers weight gain, feed intake (FI), feed conversion ratio (FCR), carcass cuts, visceral organs. However, GP decreased (P < 0.05) COL, TG, LDL and increased HDL levels compared to control birds. The dry matter (DM), crude protein (CP) and ether extract (EE) digestibility were improved by feeding GP. It can be concluded that GP could provide positive advantages in broilers performance.
Growth Performance of Broiler Chickens Fed Fossil Shell Growth Promoter  [PDF]
Gbemiga Oladimeji Adeyemo
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.41004

A study was carried out to determine the influence of fossil shell (diatomaceous earth) supplemented diets on the performance and bone composition of broiler chickens. A total of 120 day old broiler chicks were used for the experiment and randomly allotted to 5 treatments (T10.9%, T21.2%, T31.5%, T41.8% and T50% inclusion levels respectively). Fossil shell inclusion had no significant influence on feed intake and feed conversion ratio, but had significant impact on weight gain. At the finisher phase no significant differences (p > 0.05) were observed for weight gain, feed intake and feed: gain ratio. Bone analysis showed that calcium content was not affected but fossil shell had significant influence on phosphorus content of the analyzed bones.

Broiler Tissue Enrichment with Docosahexaenoic Acid (DHA) through Dietary Supplementation with Aurantiochytrium limacinum Algae  [PDF]
Colm A. Moran, Jason D. Keegan, Kirsi Vienola, Juha Apajalahti
Food and Nutrition Sciences (FNS) , 2018, DOI: 10.4236/fns.2018.910084
Abstract: The omega-3 fatty acid (n-3 FA) content of broiler tissues can be increased through dietary supplementation of hens with n-3 FA-rich microalgae. The aim of this study was to evaluate the effect of three different dietary inclusion levels of a docosahexaenoic acid (DHA)-rich microalgae (AURA) on broiler performance and the enrichment of tissues with n-3 FA. The randomized study was conducted using 352 birds, housed in 32 pens with 11 birds per pen. Pens were randomly assigned to one of four treatments, with each treatment replicated 8 times. The treatments included one unsupplemented control (0%) and three wheat-soya based experimental diets supplemented with AURA at a level of 0.5%, 1.5% and 2.5% for the starter, grower and finisher periods. Birds were weighed on days 0, 10, 24, 35 and 41, and feed intake was recorded per pen. On day 41, five birds per treatment were euthanized and individually weighed. Thigh muscle, breast muscle, liver, kidney and skin samples were taken post-mortem, freeze dried and DHA content quantified, following fat extraction and methylation, by GC-FID (AOAC 996.06 method). Performance and tissue data were analyzed by ANOVA with Dunnett’s (2-sided) post-hoc test to determine the differences between the mean values for each treatment. Dietary supplementation with AURA had no effect on body weight or feed intake during any period of the study. For thigh muscle, kidney and skin the DHA increased linearly (P < 0.05) with increasing level of dietary AURA, whilst there was a quadratic response in uptake of DHA in breast muscle and liver. The study demonstrated the potential of efficiently enriching broiler meat and organs with DHA by feeding AURA.
Efeito da restri??o de vitaminas e minerais na alimenta??o de frangos de corte sobre o rendimento e a composi??o da carne
MOREIRA, Regilda S. dos R.;ZAPATA, Jorge F.F.;FUENTES, Maria de F.F.;SAMPAIO, Eliana M.;MAIA, Geraldo Arraes;
Ciência e Tecnologia de Alimentos , 1998, DOI: 10.1590/S0101-20611998000100017
Abstract: the objective of this study was to assess the effect of the withdrawal of vitamin and mineral supplements from the diets of broilers in their final period of growing on carcass and abdominal fat yields and on meat composition. one hundred and twelve birds of a commercial line were fed experimental diets from the 21st to the 42nd days of age, consisting of four treatments: t1: diet containing regular mineral and vitamin supplements; t2: diet without supplements;t3: diet with regular supplements from day 21 to day 27 and without supplements from day 28 to day 42; t4: diet with regular supplements from day 21 to day 34 and without supplements from day 35 to day 42. eight birds from each treatment (half from each sex) were slaughtered at the end of the experimental period. carcass yield and abdominal fat were measured. dark and light meat from each carcass were then collected and analyzed for proximal composition. vitamin and mineral restriction did not significantly (p>0,05) affect carcass yield. birds from t2 showed levels of abdominal fat significantly (p<0,05) higher than those from the other treatments. moisture and ash levels in chicken meat was about 19% with values ranging from 17% in dark meat to 21% in light meat. results suggest that diets with vitamin and mineral restriction between the 21st and the 42nd day of age could increase the level of abdominal fat in the chicken about 73,53% and 1,07%, respectively and were not affected by treatment, sex or type of meat. lipid content in birds from t4 was significantly (p<0,05) lower than those in birds from the other treatments. lipid level in dark meat (6,88%) was higher(p<0,05) than in light meat (1,42%). average protein content in chicken.
Características químicas e valores energéticos de farelos de soja do oeste e sudoeste do Paraná
Rieger, Clovis;Oliveira, Vladimir de;Lovatto, Paulo Alberto;Araújo, Jocélio dos Santos;Peixoto, érika Cosendey Toledo Mello;Silva, Marcelo Aparecido da;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000100046
Abstract: a study was conducted to determine the variability on chemical and nutritional characteristics of soybean meal from the west and southwest paraná state. forty samples of soybean meal were collected in ten different processors and distributors during four months consecutively. there were differences (p<0.05) among the dry matter (dm) in samples of soybean meal analyzed. the soybean meal 10 had less (p<0.05) level of dm (86.72%) compared with soybean meals 2, 4, 5, 6 and 9 (88.96, 90.60, 89.19, 89.08 and 88.72%, respectively). the soybean meal 4 showed less content of ca (0.31%), while the soybean meals 5 and 7 had higher levels of ca (0.36 and 0.36, respectively). the calculated tmen value of soybean meal 8 was higher (p<0.05) than soybean meals 5 and 10 (2.65 versus 2.51 and 2.50mcal kg-1, respectively). the chemical composition of soybean meal from the west and southwest paraná state is homogenous and near that found in scientific literature, except for neutral detergent fiber, acid detergent fiber, iron and manganese.
Desempenho de frangos de corte alimentados com dietas contendo antibiótico e/ou fitoterápico como promotores, adicionados isoladamente ou associados
Toledo, Geni Salete Pinto de;Costa, Paulo Tabajara Chaves;Silva, Leila Picolli da;Pinto, Daniel;Ferreira, Priscila;Poletto, Cesar Junior;
Ciência Rural , 2007, DOI: 10.1590/S0103-84782007000600040
Abstract: this study was aimed at evaluating the efficacy of a phytoterapic and na antibiotic, added isolated or associated to the feed of broilers from 1 to 42 days of age). in this experiment were used 320 day old chicks cobb 500, distributed in 4 treatments as follow: t1= avilamicyn + aviance (50% +50%); t2= avilamycin (100%); t3= aviance (100%) and t4= without promoter. the experimental design was entirely randomized, with 4 treatments with 4 replicates of 20 chicks each. feed comsumption, body weight and feed conversion were evaluated at the end of each experimental period. mortality and iep were analized only at the end of the trial. the results showed that there is no positive effect on broilers performance receiving growth promoters. however, there was higher mortality in tratments wich did not receive any growth promoter wich was responsible for any efficiency productive index lower than those with these products.
Níveis das vitaminas A e E em dietas de frangos de corte de 1 a 42 dias de idade
Toledo, Geni Salete de;Kloeckner, Paulo;Lopes, Juarez;Costa, Paulo Tabajara;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000200041
Abstract: this experimental research was conducted at the poultry section of the animal science department at the federal university of santa maria. the objective of this work was to evaluate the interactions between different levels of vitamins a (retinol) and e (tocoferol), and their effect on broilers performance in two periods: 1-21 and 1-42 days of age. a total of 990 ross day-old male chicks were set. the trial was composed by 9 treatments, with 5 replicates of 22 birds each. an experimental design in blocks was employed in a factorial 32 (three levels of two vitamins). the levels of vitamins a and e were 5,000; 10,000 and 15,000ui and 10; 20 and 30mg kg-1 of diet, respectively. the parameters evaluated were: feed consumption, body weight, feed conversion and mortality. feed comsumption, body weight and feed conversion were not affected by the increasing or loweing of the medium levels of the studied vitamins. based in these results we can conclude that vitamins a and e , wich means 50% reduction of the levels used by poultry integration in south brazil do not reduce the growing of broilers when compared to medium and high levels, which can lead to a reducing in the costs of production.
Adi??o de bentonita sódica como adsorvente de aflatoxinas em ra??es de frangos de corte
Lopes, Juarez Morbini;Rutz, Fernando;Mallmann, Carlos Augusto;Toledo, Geni Salete Pinto de;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000500040
Abstract: high concentrations of micotoxins in raw materials, mainly in corn used in poultry rations of food, is an important subject of study due to hazardous problems not only to the animals themselves but also to the producer and to the poultry industry due to the reduction of performance by aflatoxins. taking into account the lack of efficient tecnique for its elimination, from the feed, an adsorbent was added to the diets in order to reduce the effects of aflatoxins. nine hundred sixty day old cobb chicks, distributed in 8 replicates of 20 birds per pen the following treatments: t1=no aflatoxin; t2=3mg kg-1 of aflatoxin; t3=no aflatoxin+0.5% of bentonite; t4=3mg kg-1 of aflatoxin+0,1% of bentonite;t5=3mg kg-1 of aflatoxin+0.3% bentonite and t6=3mg kg-1 aflatoxin+ 0.5% of bentonite. feed intake, body weight and feed conversion were depressed by aflatoxin in the feed. the addition of bentonite to the feed without aflatoxin did not caused negative effecs to the broilers. in treatments carried out with 3mg kg-1 of aflatoxins, the addition of the adsorbent promoted a better performance of the broilers with best results for those receiving 0.3% of bentonite.
Desempenho de frangos de corte alimentados com diferentes níveis de farelo de canola
Franzoi, Elena Elisabete;Siewerdt, Frank;Rutz, Fernando;Brum, Paulo Ant?nio Rabenschlag de;Gomes, Paulo Cezar;
Ciência Rural , 1998, DOI: 10.1590/S0103-84781998000400024
Abstract: the objective of this experiment was to determine the best level of substitution of soybean meal by canola meal in rations for broilers. five levels of substitution of soybean meal by canola meal were compared: 0, 10, 20, 30, and 40%. twelve hundred one-day ross chicks were used, grouped by sex and weight. animals were fed rations with 22% of crude protein and 3000kcal me/kg from 0 to 21 days, 20% of crude protein and 3100kcal me/kg from 22 to 35 days, and 18% of crude protein and 3150 kcal me/kg from 36 to 42 days. feed consumption was reduced from 0 to 21 days and from 36 to 42 days when higher amounts of canola meal were used in the diets. a reduction in weight gain of the broilers was observed only from 0 to 21 days. feed conversion was improved from 0 to 21 days and from 22 to 35 days. canola meal can participate in diets for broilers from 22 to 42 days of age in quantities up to 40% of the amount of the soybean meal used.
Composi??o de carca?a de frangos de corte alimentados com farelo de canola
Franzoi, Elena Elisabete;Siewerdt, Frank;Rutz, Fernando;Brum, Paulo Ant?nio Rabenschlag de;Gomes, Paulo Cezar;
Ciência Rural , 2000, DOI: 10.1590/S0103-84782000000200023
Abstract: an evaluation of the effects of using canola meal on the carcass composition of broilers was performed. soybean meal was partially substituted (0, 10, 20, 30, or 40%) by canola meal in the diets. fourty experimental units of 30 birds each were formed according to the bird=s initial weight and sex. the diets were formulated to contain 22, 20, or 18% of crude protein and 3000, 3100 or 3150kcal of metabolizable energy per kg of diet, and broilers were fed respectively in the periods between 0 and 21, 22 and 35, and 36 and 42 days. on day 42, a bird from each experimental unit was killed and its carcass composition was determined. carcass protein increased and carcass fat decreased linearly with the amount of canola meal used in the diets. the percentage of carcass fat remained unchanged with the inclusion of canola meal in the diets. neither carcass yield nor the levels of crude energy and ashes in the carcasses were changed. the use of canola meal in the diets can be recommended because the quality of the carcasses was improved. quality improvement was achieved without losses in carcass weight or yield.
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