Effect of different dietary concentrations of Amino Acids on the performance of two different Broiler Strains

Ebling, PD; Ribeiro, Aml; Trevizan, Luciano; Silva, Icm da; Kessler, Alexandre de Mello; Rubin, Lauricio Librelotto

doi:10.1590/s1516-635x2013000400008

Cited by 13 publications

(21 citation statements)

References 25 publications

(26 reference statements)

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“…Moreover, the significant difference that was observed with regards to main effect of energy in terms average daily gain, feed conversion ratio and cost/kg gain at finisher phase of wet season and the nonsignificant difference in feed intake, water intake and mortality across all the three energy levels, is similar to the findings of Zahid and Hussain (2002), which showed significant difference (P<0.05) in the feed conversion ratio of boiler birds fed different energy and protein concentration, however, the values they reported were lower than those observed in the present study. This is because the concentration of the nutrients used in the two separate study differs and also the environmental temperature, but Ebling et al (2013) reported nonsignificant difference in the feed conversion ratio of boiler birds fed different amino acid levels which disagrees with findings of this study. As the case with the previous phases of the experiment, the birds that consumed high energy diet had the highest cost of production compared to those fed low and medium energy diets, From this result it can be said that; since the birds that consumed low and medium energy diets performed better in terms of weight gain, than those that consumed high energy diet which also had a better feed conversion ratio than those that consumed high energy diet, yet they had the same feed intake and mortality.…”

Section: Performance Parameters Of Different Broiler Strains At Finiscontrasting

confidence: 99%

Performance of some broiler strains fed varying energy levles in wet season of semi-arid Sokoto, Nigeria

Aliyu

Bashar

Abubakar

et al. 2018

Res. Agric. Livest. Fish.

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Performance Broiler strains Energy levelsWet season Semi-arid Three commercial broiler strains (Arbor-acre, Marshall and Hubbard) were placed under three dietary energy and crude protein levels of 2900 Kcal/kg (ME) -22% CP, 3100 Kcal/kg (ME) -23% CP, and 3300 Kcal/kg (ME) -24% CP as low, medium and high energy levels at starter phase, respectively. At the finisher phase, the birds were fed 2800 Kcal/kg (ME) -19% CP, 3000 Kcal/kg(ME) -20% CP and 3200 Kcal/kg (ME) -21% CP, in order to determine their productive performance in wet season of semi-arid. A total of 675 birds were used in a completely randomized design (CRD) comprising 225 birds each of each strain serving as treatments. Each group was replicated five times so that each replicate had 15 birds. Each strain group was fed three dietary energy levels at both starter and finisher phases for 56 days. Feed and water intakes, mortality, weight gain, feed conversion ratio, Cost/kg gain was determined at the end of the trial. Data recorded for each phase were subjected to Analysis of variance (ANOVA) and least significant difference (LSD) was used to compare the means. Results indicated that Hubbard strain had significantly (P<0.05) lowest cost/kg gain, mortality, feed conversion ratio, feed intake and higher weight gain than other strains. Low energy diet had significant higher (P<0.05) weight gain and lower cost/kg gain than both medium and high energy diets. The study concluded that; Hubbard strain fed low energy diet should be raised in wet season of semi-arid Sokoto due to its lower cost/kg gain, mortality, better feed conversion ratio and higher average daily gain compared to other strains. Broiler strains fed varying energy levels in wet seasonRes.

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Section: Performance Parameters Of Different Broiler Strains At Finiscontrasting

confidence: 99%

Performance of some broiler strains fed varying energy levles in wet season of semi-arid Sokoto, Nigeria

Aliyu

Bashar

Abubakar

et al. 2018

Res. Agric. Livest. Fish.

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“…For the total rearing period (1 to 42 days), although the production efficiency index was similar between strains, lower feed intake and better feed conversion ratio were obtained in Cobb ® broilers compared with Ross ® birds (p<0.05). On the other hand, Ebling et al (2013) observed that Ross ® broilers were heavier on the first day and during the entire rearing period, but presented higher feed intake and worse feed conversion ratio when compared with Cobb ® broilers. Mustafa et al (2014), studying the effect of the addition of acetic acid at 1% and 2% to the drinking water, reported significant increases in body weight and body weight gain, and better feed conversion ratio on day 42 days in the both Ross ® and Cobb ® broilers when compared with control.…”

Section: Resultsmentioning

confidence: 92%

Footpad Dermatitis in Broilers: Differences between Strains and Gender

Martins

Mendes

et al. 2016

Rev. Bras. Cienc. Avic.

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Pododermatitis, also known as "bumblefoot", is an inflammatory lesion of the footpad. The objective of this study was to evaluate the influence of genetic strain and sex on the incidence of footpad lesions in broilers. The experiment was carried out at São Paulo State University, using 480 broilers distributed in a completely randomized experimental design in a 2X2 factorial arrangement (2 strains X2 sexes), with four replicates of 30 broilers each, totaling 16 experimental units. Feed intake, weight gain, feed conversion ratio, and livability were evaluated at 21, 35 and 42 days of age; production efficiency factor was determined at the end of the rearing period. On day 42, the footpads of 100 broilers were grossly examined and assigned a lesion score in a 1-3 scale (Almeida Paz & Martins, 2014). Three samples per score within treatment were collected for microscopic evaluation. Analysis of variance was applied and performance parameter means were compared by Tukey's test. Footpad lesion incidence was analyzed by the χ2 test using SAS (version8.2). Ross ® broilers presented higher feed intake during all evaluated periods, and higher weight gain only in the period 1 to 21 days compared with Cobb ® broilers. On the other hand, Cobb ® presented better feed conversion ratio in the periods of 1 to 35 and 1 to 42 days. The incidence of foot pad lesions was statistically different (p<0.05) between strains and sexes, but there were no interactions between these factors. The lesion scores assigned were compatible with the histopathological results, showing that the higher the score, the more severe were the dermal and epidermal lesions.

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“…Feed-to-poultry N efficiency was calculated from Ebling et al (2013) for a broiler reaching 3.65 kg live weight in 47 days with a feed conversion ratio of 1.67 and a crude protein content of 20.8 % in feed. Egg production was included in the feed-to-poultry N efficiency.…”

Section: Review Of Potential N Efficienciesmentioning

confidence: 99%

Relative nitrogen efficiency, a new indicator to assess crop livestock farming systems

Godinot

Leterme

Vertès

et al. 2015

Agron. Sustain. Dev.

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Improving nitrogen (N) efficiency is a priority for increasing food production while reducing its environmental impacts. N efficiency indicators are needed to achieve this goal, but current indicators have some limitations. In particular, current N efficiency indicators are not appropriate tools to compare farming systems with different types of production because animal N efficiency is, by nature, lower than crop N efficiency. A novel N efficiency indicator called "relative N efficiency" was developed to address this issue. It was calculated as the ratio of the actual N efficiency of the farming system to the weighted mean of the potential efficiency of each type of product output provided in literature reviews. Relative N efficiency was calculated for 557 farms of various types from France and Italy. The relative N efficiency indicator was validated by comparison with a statistical approach based on multiple linear regression. Statistical analysis showed that relative N efficiency was independent of production type and could therefore be used for unbiased comparison of different farming systems. Relative N efficiency was particularly interesting when comparing mixed farming systems with different proportions of animal and crop production.

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Effect of different dietary concentrations of Amino Acids on the performance of two different Broiler Strains

Cited by 13 publications

References 25 publications

Performance of some broiler strains fed varying energy levles in wet season of semi-arid Sokoto, Nigeria

Performance of some broiler strains fed varying energy levles in wet season of semi-arid Sokoto, Nigeria

Footpad Dermatitis in Broilers: Differences between Strains and Gender

Relative nitrogen efficiency, a new indicator to assess crop livestock farming systems

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