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The Effect of Calcium and Available Phosphorus Levels on Performance, Egg Quality and Bone Characteristics of Japanese Quails at End of the Egg-Production Phase Rev. Bras. Ciênc. Avic.
Ribeiro,CLN; Barreto,SLT; Reis,RS; Muniz,JCL; Viana,GS; Ribeiro Junior,V; Mendonça,MO; Ferreira,RC; DeGroot,AA.
ABSTRACT Calcium (Ca) and available phosphorus (avP) requirements for egg production are different between the beginning and the end of the egg-production cycle. The objective of this study was to estimate the Ca and avP requirements of Japanese quails at end of the production phase. In total, 256 Japanese quails with 48 weeks of age were randomly distributed in 2 x 2 factorial arrangement consisting of two Ca levels (29 and 38 g/kg) and two avP levels (1.5 and 3.0 g/kg), totaling four treatments with eight replicates of eight hens each. The variables evaluated were feed intake (FI); egg production (EP); marketable egg production (MEP); egg weight (EW); egg mass (EM); feed conversion ratio per egg mass (FCRM); feed conversion ratio per dozen eggs (FCRD);...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix; Bone development; Dicalcium phosphate; Eggshell; Bone mineral deposition.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500033
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Firewood Ash as Calcium Source in the Initial Diet of Broiler Chickens Rev. Bras. Ciênc. Avic.
Saccomani,APO; DE,Faria Filho; França,XAA; Dias,AN; Matos Júnior,JB; Faria,DE.
ABSTRACT This experiment aimed to evaluate the utilization of firewood ash as calcium source in the initial diet of broiler chickens. One hundred and twenty eight broiler chickens of Cobb-500® strain, from 1 to 21 days of age, were randomly distributed in four treatments with four repetitions of eight birds each, been four female and four male. The experimental diets were corn-soybean based, been isoenergetic and isonutrients, and had 0, 0.32, 0.98 and 1.27% of firewood ash as calcium source. The firewood ash utilized had 23.8% of calcium, 0.39% of total phosphorus, and 0.11% of sodium. The experimental treatments did not influence the feed intake, body weight, body weight gain, and food conversion from 1 to 7, 1 to 14, and 1 to 21 days of age. The tibia...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternative feedstuff; Bone development; Calcium source; Performance; Poultry.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400645
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Calcium anacardate in the diet of broiler chickens: the effects on growth and bone quality Rev. Ciênc. Agron.
Cruz,Carlos Eduardo Braga; Freitas,Ednardo Rodrigues; Aguiar,Germana Costa; Braz,Nádia de Melo; Trevisan,Maria Tereza Salles.
ABSTRACT The aim of this research was to evaluate the effects of adding calcium anacardate (ACa) as a source of anacardic acid to the diet of broiler chickens on the growth, quality and bone composition of the femur and tibia of the birds. A total of 840 male chicks, one day old, were kept in a completely randomised experimental design, with six treatments and seven replications of 20 birds. The following treatments were applied: a diet without the addition of growth promoter (GP), a diet with added GP and other diets with no GP and the addition of ACa at levels of 0.25, 0.50, 0.75 and 1%. The variables under analysis were the weight, length, diameter, Seedor index, and the resistance and deformity of the left femur and tibia of the birds. For bone...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic acid; Bone development; Femur; Tibia.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200329
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