Ajuste preciso do nível de energia na dieta de frangos de corte para controle do desempenho e da composição lipídica da carne

Ferreira, Gabriela da Silva; Pinto, Marcos Franke; Neto, Manoel Garcia; Ponsano, Elisa Helena Giglio; Gonçalves, C. A.; Bossolani, Iderlipes Luiz Carvalho; Pereira, Amanda Gomes

doi:10.1590/0103-8478cr20130206

Cited by 21 publications

(19 citation statements)

References 6 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Energy concentration did not influence broiler chicken weight gain; however, feed conversion was improved using diet T3, which maintained weight gain with lower feed intake. Other studies are in agreement with this finding (Jafarnejad and Sedegh 2011; Ferreira et al 2015; Orduña-Hernández et al 2016). In different reports on broiler chickens, there is no clear indication about the effects of energy level in diet on weight gain, feed intake or feed efficiency.…”

Section: Discussionsupporting

confidence: 82%

“…Ferreira et al (2015) found different effects and reported lower intramuscular fat content in meat from birds fed diets with lower energy level. Rosa et al (2007) reported that carcass chemical composition changes in different genetic groups; however, for commercial Ross 308 broilers there was reduced crude protein and increased lipid in carcass with increased dietary energy level in broilers.…”

Section: Discussionmentioning

confidence: 99%

“…Marcu et al (2013) found that increasing dietary energy and protein elevated breast weight and muscle mass, and reduced fat content, while reducing nutrient levels decreased protein content and elevated fat content in pectoral muscle. In contrast, Ferreira et al (2015) produced meat with less fat in broiler chickens fed low energy diets, although growth was decreased. Several factors could have influenced the results of growth performance, carcass yield of cuts or meat chemical composition of broiler chickens fed diets with different nutrient density; one of them was genotype of broiler chickens.…”

Section: Introductionmentioning

confidence: 92%

See 2 more Smart Citations

Effect of diets with different energy concentrations on growth performance, carcass characteristics and meat chemical composition of broiler chickens in dry tropics

et al. 2016

View full text Add to dashboard Cite

Background Diets with increasing levels of energy were fed for 42 days to 200, 1-day old male broiler chickens to evaluate growth performance, carcass characteristics and chemical composition of meat. The study was performed in the subtropical area of northeastern Mexico. Treatments diets (T) for starter and finisher phases had apparent metabolizable energy (AME; kcal/kg) of: 2960 and 3040 (T1); 3000 and 3080 (T2); 3040 and 3120 (T3); 3080 and 3160 (T4), respectively. Within each of the growing phases the four treatment diets were formulated to contain similar levels of crude protein, amino acids, and other nutrients. In a completely randomized design, birds were allocated to the four treatments with five replicates (floor pens) of 10 birds each. The trial was divided in two phases (starter and finisher) of 21 days each (42 days total).ResultsWeight gain was not influenced by energy level; however, feed conversion efficiency was improved in the diets with 3040 and 3120 kcal/kg AME (T3; P < 0.05). There was no influence of treatment on total carcass weight or carcass cuts (P > 0.05). Meat from breast muscle had similar crude protein percentages among treatments; ether extract was higher in T1 than T4 (P < 0.05). The percentages of water, ether extract, ash and crude protein in thigh meat were not significantly different (P > 0.05) among treatments. ConclusionsFor this study carried out in a dry tropical area, the moderate increase in dietary energy concentration (diet with 3040 and 3120 kcal/kg AME, T3) enhanced feed conversion efficiency of broiler chickens.

show abstract

Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 92%

See 1 more Smart Citation

Effect of diets with different energy concentrations on growth performance, carcass characteristics and meat chemical composition of broiler chickens in dry tropics

et al. 2016

View full text Add to dashboard Cite

show abstract

“…In agreement, Nogueira et al (2013) observed an increase in weight gain and an improvement in feed conversion by birds in response to increased feed energy levels. In turn, Ferreira et al (2015) reported a worse feed conversion rate of broiler chickens at 42 days of age in response to reduced feed metabolisable energy.…”

Section: Concomitantmentioning

confidence: 99%

Use of emulsifier and lipase in feeds for broiler chickens

Oliveira

Balbino

Silva

et al. 2019

SCA

View full text Add to dashboard Cite

The objective of this study was to evaluate the effect of exogenous emulsifier and lipase in diets on performance, digestibility, and organ biometry of broiler chickens. A completely randomised design with seven treatments and seven replications was adopted. The treatments were as follows: T1 (positive control; PC): 3000, 3100, 3200, and 3250 Kcal of metabolisable energy (ME) kg-1 of diet for phases 1 to 10, 11 to 21, 22 to 31, and 32 to 37 days, respectively; T2: PC with reduction in ME of 30 Kcal kg-1 of diet; T3: PC with reduction in ME of 60 Kcal kg-1 of feed; T4 (negative control; NC): PC with reduction in ME of 90 Kcal kg-1 of feed; T5: NC with inclusion of exogenous lipase (10 000 U kg-1); T6: NC with inclusion of emulsifier (250 g t-1); and T7: NC with inclusion of lipase (10 000 U kg-1) and emulsifier (250 g t-1) in the period from 1 to 37 days of rearing. Performance characteristics (weight gain (WG), feed intake (FI), and feed conversion (FC)), carcass yield, cut yield, the relative weight of abdominal fat and organs (small intestine, liver, and pancreas), and relative intestinal length, in addition to dry matter digestibility (CDADM), ethereal extract (CDAEE), crude metabolisable energy (CMACE), and apparent metabolisable energy (AME) of the diets, were evaluated. In the initial phase, the CDAEE was higher for the PC group than for the emulsifier + lipase group. The AME determined in the final phase for the group supplemented with an emulsifier was higher by approximately 50 Kcal (EM) than the NC group. The WG of the lipase group was similar to that of the PC group. However, the groups with emulsifier and emulsifier + lipase showed a lower WG than the PC group. The additives used did not recover the FC to the same level observed in the PC group. The reduction in ME of 90 Kcal kg-1 generated a lower WG and worse FC. The use of both an emulsifier and lipase together produced results like to the PC group. The biometrics of the organs and the carcass yield and cuts were not influenced by diets. Thus, it can be concluded that the inclusion of lipase and an emulsifier improves the performance of broilers given diets with reduced energy, although it does not improve the lipid utilisation of the diets.

show abstract

“…With surface analysis response, the best conditions of hydrothermal pre-treatment in sugarcane were determined (Ferreira et al, 2015). Using this methodology, greater efficiency of live weight ratio of broiler chickens against the feed intake and its feed conversion was achieved.…”

Section: Resultsmentioning

confidence: 99%