The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
The Revista Brasileira de Zootecnia (RBZ) is a publication dedicated to the broad field of Animal Science. We publish high-quality, original scientific research that spans across diverse areas within the discipline. The scope of RBZ encompasses a wide range of topics, including aquaculture, biometeorology and animal welfare, forage crops and grasslands, animal and forage plants breeding and genetics, animal reproduction, ruminant and non-ruminant nutrition, meat science and muscle biology, precision livestock, and animal production systems and agribusiness.
Chemical and amino acid composition and true digestibility coefficients of amino acids of feather and blood meals for birds from different suppliers were determined. Thirty cecectomized cocks were distributed in a completely randomized design, with 4 different feather and blood meals (meals 1, 2, 3 and 4) and one treatment in which the birds remained fasting, with six replications as the experimental unit composed of one rooster. The variations in the chemical composition of the feather and blood meals can be related to the lack of standardization in the processing to which they are submitted. Mean true digestibility coefficients of essential and non essential amino acid for feather and blood meals 1,2, 3 and 4 are 75.14 and 68.41; 73.34 and 67.17; 78.99 and 75.41; 78.55 and 73.40%, respectively.
Chemical and amino acid composition and true digestibility coefficients of amino acids of feather and blood meals, determined in cecectomized cocks
Eyng,Cinthia and Nunes,Ricardo Vianna and Rostagno,Horacio Santiago and Albino,Luiz Fernando Teixeira and Nunes,Christiane Garcia Vilela and Pozza,Paulo Cesar. Chemical and amino acid composition and true digestibility coefficients of amino acids of feather and blood meals, determined in cecectomized cocks. R. Bras. Zootec. [online]. 2012, vol.41, 1, [cited 2026-04-23], pp.80-85. Available from: <https://rbz.org.br/article/chemical-and-amino-acid-composition-and-true-digestibility-coefficients-of-amino-acids-of-feather-and-blood-meals-determined-in-cecectomized-cocks/>. ISSN 1516-3598. http://doi.org/10.1590/S1516-35982012000100012.
Eyng,Cinthia; Nunes,Ricardo Vianna; Rostagno,Horacio Santiago; Albino,Luiz Fernando Teixeira; Nunes,Christiane Garcia Vilela; Pozza,Paulo Cesar. Chemical and amino acid composition and true digestibility coefficients of amino acids of feather and blood meals, determined in cecectomized cocks. R. Bras. Zootec., v.41, 1, p. 80-85. Jan. 2012. Available from: <https://rbz.org.br/article/chemical-and-amino-acid-composition-and-true-digestibility-coefficients-of-amino-acids-of-feather-and-blood-meals-determined-in-cecectomized-cocks/>. acess on 23 Apr. 2026. http://doi.org/10.1590/S1516-35982012000100012.
Eyng,Cinthia, & Nunes,Ricardo Vianna, & Rostagno,Horacio Santiago, & Albino,Luiz Fernando Teixeira, & Nunes,Christiane Garcia Vilela, & Pozza,Paulo Cesar. (2012). Chemical and amino acid composition and true digestibility coefficients of amino acids of feather and blood meals, determined in cecectomized cocks. R. Bras. Zootec., 41(1) , 80-85. http://doi.org/10.1590/S1516-35982012000100012.
EyngCinthia, NunesRicardo Vianna, RostagnoHoracio Santiago, AlbinoLuiz Fernando Teixeira, NunesChristiane Garcia Vilela, PozzaPaulo Cesar. Chemical and amino acid composition and true digestibility coefficients of amino acids of feather and blood meals, determined in cecectomized cocks. R. Bras. Zootec. [Internet]. 2012 Jan [cited 2026 Apr 23]; 41(1): 80-85. Available from: https://rbz.org.br/article/chemical-and-amino-acid-composition-and-true-digestibility-coefficients-of-amino-acids-of-feather-and-blood-meals-determined-in-cecectomized-cocks/. http://doi.org/10.1590/S1516-35982012000100012.
Figure 6
Differential abundance for the species Faecalibacterium prausnitzii (A) and Megamonas funiformis (B).
