Complementary Effect of Processed Broiler Offal 
 and Feather Meals on Nutrient Retention, Carcass and Organ Mass of Broiler 
 Chickens

Isika, M. A.; Agiang, E. A.; Eneji, C. A.

doi:10.3923/ijps.2006.656.661

Cited by 5 publications

(1 citation statement)

References 2 publications

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“…Feathers have a high content of crude protein, which is primarily constituted of keratins, simple proteins resistant to proteolytic enzymes in the stomach and intestines of the animal (Scapim et al, 2003). For this reason, they must be hydrolyzed by pressurized steam-cooking to be digested (Isika et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Feather and blood meal at different processing degrees in broiler pre-starter and starter diets

Laboissière

Costa

Filho³

et al. 2020

Revista Brasileira De Zootecnia

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The objective of this study was to evaluate the inclusion of feather and blood meal (FBM) in broiler pre-starter and starter diets according to the processing method used. Performance, digestibility, and intestinal morphometry of broilers fed diets containing FBM were evaluated in two experiments, in the pre-starter (1-7 d) and starter (8-21 d) phases in a randomized block design with four treatments and five replicates of 12 birds, totaling 20 experimental units per trial. The criteria used for block formation was the battery floor. The meal was processed under different degrees of hydrolysis pressure (2.0 kgf/cm 2 for 40 min; 2.5 kgf/cm 2 for 30 min; and 3.0 kgf/cm 2 for 20 min) and added at 9% to the pre-starter (Experiment I) and starter (Experiment II) diets. In each experiment, 480 male Cobb 500 ® chicks were allocated to batteries. The following variables were measured: live weight, weight gain, feed intake, feed conversion ratio, and digestibility and retention of dry matter, nitrogen, and ether extract. Performance was not influenced by the dietary inclusion of the ingredient. However, FBM subjected to the highest hydrolysis pressure resulted in the worst overall nutritional balances. The chickens were more susceptible to FBM processing in the prestarter phase, when the hydrolysis pressure of 2.5 kgf/m 2 for 30 min provided the best results. In the starter diet, FBM processed at a hydrolysis pressure of 2.0 kgf/m 2 for 40 min provided the best performance results up to 14 days of age, without changing nutrient metabolism. Up to 9% feather and blood meal can be included in broiler prestarter and starter diets as long as the ingredient processing method is well-known.

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Section: Introductionmentioning

confidence: 99%

Feather and blood meal at different processing degrees in broiler pre-starter and starter diets

Laboissière

Costa

Filho³

et al. 2020

Revista Brasileira De Zootecnia

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Graded levels of a defatted green microalgae inclusion in diets for broiler chicks led to moderate up-regulation of protein synthesis pathway in the muscle and liver

et al. 2018

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Chemical composition and amino acid profile of differently processed feather meal

et al. 2016

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Feather wastes represent potential alternative ingredients for animal feedstuffs which can ameliorate the protein shortage for food and feed. Previous attempts to provide information about the nutrient composition of feather meal are either too complicated for rural livestock farmers in developing countries or they provided incomplete information on chemical composition. Washed feathers were subjected to different processing techniques such as pre-soaking in distilled water, wood ash, 0.3M NaOH, a mixture of wood ash and 0.3M NaOH, incubated at 37 o C and boiled at 150 o C for 60 minutes. Treated feather meals were analysed for chemical composition and amino acid profile. The overall result showed that feather meal pre-soaked with wood ash for 24 hr boiled at 150 o C for 60 minutes, those pre-soaked with 0.3M NaOH and wood ash incubated at 37 o C for 24 hr boiled at 150 o C for 60 minutes and raw feather meal pre-soaked in distilled water for 24 hr boiled at 150 o C for 60 minutes gave better results. Wood ash and 0.3M NaOH and their mixture could enhance the nutritional value of feather meal.

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Complementary Effect of Processed Broiler Offal and Feather Meals on Nutrient Retention, Carcass and Organ Mass of Broiler Chickens

Cited by 5 publications

References 2 publications

Feather and blood meal at different processing degrees in broiler pre-starter and starter diets

Feather and blood meal at different processing degrees in broiler pre-starter and starter diets

Graded levels of a defatted green microalgae inclusion in diets for broiler chicks led to moderate up-regulation of protein synthesis pathway in the muscle and liver

Chemical composition and amino acid profile of differently processed feather meal

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