Use of Cellulases and Xylanases to Supplement Diets Containing Alfalfa for Broiler Chicks: Effects on Bird Performance and Skin Color

Ponte, P I P; Ferreira, L.M.A.; Soares, Mariana; Aguiar, M. A. N. M.; Lemos, J. P. C.; Mendes, Izabela da Silva; Fontes, C.M.G.A.

doi:10.1093/japr/13.3.412

Cited by 21 publications

(14 citation statements)

References 22 publications

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“…Likewise the thigh muscle from dry OV leaf was more yellow (14.25 vs 12.02) compared with dry MO leaf group. The relatively high values of yellowness of breast and thigh meat, comparatively with different observations reported in literature might be due to the access of outdoor and the natural pigments present in the legume-based pasture (Ponte et al, 2004;Grashorn and Serini, 2006). Genotype and environmental condition such as feed and housing conditions might affect meat colour (Du and Ahn, 2002;Saláková et al, 2009).…”

Section: Resultsmentioning

confidence: 73%

Comparison of Meat Quality and Fatty Acid Profile in Slow-Growing Chicken Genotypes Fed Diets Supplemented with Origanum Vulgare or Melissa Officinalis Leaves Under the Organic System

Eleroğlu

Yıldırım

Işıklı

et al. 2013

Italian Journal of Animal Science

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This study was conducted to compare the meat quality and selected fatty acids profile of two different slow-growing broiler genotypes (Hubbard S757; S757 and Hubbard Grey Barred JA; GB-JA) fed diets supplemented with dry oregano (Origanum vulgare L., OV; 10 g/kg basal diets) or lemon balm leaves (Melissa officinalis L., MO; 10 g/kg basal diets) under organic housing system. It is concluded that slow-growing genotypes had no effect on L* parameter of the breast, thigh and abdominal fat meat quality. Two hundred and forty chicks were allocated randomly into 4 experimental groups according to a 2¥2 factorial arrangement. Birds were raised until 98 days in order to achieve an acceptable market live weight. The b* colours of breast and thigh meat were significant different among genotypes and also a* colour of breast meat of GB-JA increased (P<0.05). Slow-growing female broilers produced a higher dry matter content and lower fat content of breast meat as compared with males. There were the higher concentrations of linoleic (C18:2n-6) acid and the lower concentrations of linolenic acid (C18:3n-3) in genotypes fed with supplemented dry oregano or lemon balm leaves diet. Sex affected total unsaturated fatty acids (UFA) composition, polyunsaturated fatty acid (PUFA) and linoleic acid, were higher in slow growing males breast meat as compared with females breast meat. These results suggested that the slow-growing genotypes might had influenced the colour of breast and thigh meat, although overall meat quality was not affected under the organic system.

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Section: Resultsmentioning

confidence: 73%

Comparison of Meat Quality and Fatty Acid Profile in Slow-Growing Chicken Genotypes Fed Diets Supplemented with Origanum Vulgare or Melissa Officinalis Leaves Under the Organic System

Eleroğlu

Yıldırım

Işıklı

et al. 2013

Italian Journal of Animal Science

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“…Unfortunately, these products were obtained from either retailers or wholesalers, and, consequently, their feed ingredients were unknown. Ponte et al (2004) used controlled trials to examine the effects of alfalfa supplementation on chicken meat. The authors found that, while the legumes improved meat quality, poultry demonstrated lower feed conversion ratios and reduced weight gain, suggesting that forages may not be an efficient feed source for broilers.…”

Section: Systems On Meat Qualit Ymentioning

confidence: 99%

Framework for life cycle assessment of livestock production systems to account for the nutritional quality of final products

McAuliffe

Takahashi

Lee

2018

Food and Energy Security

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Life cycle assessment (LCA) is widely regarded as a useful tool for comparing the environmental impacts of multiple livestock production systems. While LCA results are typically communicated in the form of environmental burdens per mass unit of the end product, it is increasingly becoming recognized that the product quality also needs to be accounted for to truly understand the value of a farming system to society. To date, a number of studies have examined environmental consequences of different food consumption patterns at the diet level; however, few have addressed nutritional variations of a single commodity attributable to production systems, leaving limited insight into how on‐farm practices can be improved to better balance environment and human nutrition. Using data from seven livestock production systems encompassing cattle, sheep, pigs, and poultry, this paper proposes a novel framework to incorporate nutritional value of meat products into livestock LCA. The results of quantitative case studies demonstrate that relative emissions intensities associated with different systems can be dramatically altered when the nutrient content of meat replaces the mass of meat as the functional unit, with cattle systems outperforming pig and poultry systems in some cases. This finding suggests that the performance of livestock systems should be evaluated under a whole supply chain approach, whereby end products originating from different farm management strategies are treated as competing but separate commodities.

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“…The effect of Driselase20 on digestibility of PR should be confirmed in future. With respect to other enzymes, Ponte et al (2004a) showed that Roxazyme G enzymes, cellulose 5a from Cellvibrio mixtus and xylanase GHII-CBM6 from Clostridium thermocellum were not effective in improving the performance of broiler chicks fed alfalfa-containing diets. Ponte et al (2004b) also reported that commercial and recombinant hemicellulases were not effective in improving the nutritive value of durum wheat-based diets given to broiler chicks.…”

Section: Passage Of Feed Through the Gastrointestinal Tractmentioning

confidence: 99%

Preference and Passage through the Gastrointestinal Tract of Paddy Rice in Young Chicks

Yamanaga

Furuse

2014

J. Poult. Sci.

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Rice grain for feed has been used for chicken feed as a substitute for corn, since the nutritive values of corn and rice are similar. However, it is unclear whether rice grain for feed should be available for young chicks from the early stages of ages. It was reported that the preference for unpolished rice was low, but no information was available for paddy rice (PR) which is low in digestibility. In the present study, therefore, preference for PR and the passage of feed through the gastrointestinal tract were investigated. In order to improve this preference, the effect of mixing PR with a practical diet was compared with early learning for adapting to PR. In addition, it was confirmed that the passage rate of PR is improved by the addition of grit, an enzyme or lysine. As a result, replacing 60% of a practical diet with PR was found to significantly increase intake of feed in comparison with the practical diet alone. The preference for PR was very clear irrespective of whether early learning for adapting to PR occurred just after hatching or not. The addition of an enzyme improved the passage of feed through the whole gastrointestinal tract, although the addition of grit and lysine did not affect it. On the other hand, the passage of feed from the crop was not improved by any treatments. In conclusion, mixing PR and the practical diet improved feed intake and the passage of feed through the gastrointestinal tract was improved by adding enzymes in young chicks.

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Use of Cellulases and Xylanases to Supplement Diets Containing Alfalfa for Broiler Chicks: Effects on Bird Performance and Skin Color

Cited by 21 publications

References 22 publications

Comparison of Meat Quality and Fatty Acid Profile in Slow-Growing Chicken Genotypes Fed Diets Supplemented with Origanum Vulgare or Melissa Officinalis Leaves Under the Organic System

Comparison of Meat Quality and Fatty Acid Profile in Slow-Growing Chicken Genotypes Fed Diets Supplemented with Origanum Vulgare or Melissa Officinalis Leaves Under the Organic System

Framework for life cycle assessment of livestock production systems to account for the nutritional quality of final products

Preference and Passage through the Gastrointestinal Tract of Paddy Rice in Young Chicks

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