Paulo Reis de Carvalho
Departamento de Clinica Medica da Faculdade de Medicina Veterinaria e Zootecnia da Universidade de Sao Paulo. Av. Prof. Orlando Marques de Paiva, no 87, CEP 05508-270, Sao Paulo, SP, Brazil
Maria Carolina Goncalves Pita
Departamento de Clinica Medica da Faculdade de Medicina Veterinaria e Zootecnia da Universidade de Sao Paulo. Av. Prof. Orlando Marques de Paiva, no 87, CEP 05508-270, Sao Paulo, SP, Brazil
Eduardo Piber Neto
Departamento de Clinica Medica da Faculdade de Medicina Veterinaria e Zootecnia da Universidade de Sao Paulo. Av. Prof. Orlando Marques de Paiva, no 87, CEP 05508-270, Sao Paulo, SP, Brazil
Cassio Xavier de Mendonca
Departamento de Clinica Medica da Faculdade de Medicina Veterinaria e Zootecnia da Universidade de Sao Paulo. Av. Prof. Orlando Marques de Paiva, no 87, CEP 05508-270, Sao Paulo, SP, Brazil
ABSTRACT
Two hundred eighty-eight 32-wk-old Hisex White laying hens were used in this research during a 10 weeks period, arranged in a 2 x 5 completely randomized factorial design, with three replicates of eight birds per treatment. Two groups: fish oil (OP) and Marine Algae (AM) with five DHA levels (120, 180, 240, 300 and 360 mg/100 g diet) were assigned including two control groups birds fed corn and soybean basal diet (CON) and a diet supplemented with AM (AM420) to study the effect of time 0, 2, 4, 6 and 8 weeks (wk) on the efficiency of egg yolk fatty acid enrichment. The means varied (p<0.01) of 17.63% (OP360) to 22.08% (AM420) is the total Polyunsaturated Fatty Acids (PUFAs) and 45.8 mg/g (OP360), 40.37 mg/g (OP360, 4 wk) to 65.82 mg/g (AM420) and 68.79 mg/g/yolk (AM120, 8 wk) for n-6 PUFAs. On the influence of sources and levels in the times, the means of n-3 PUFAs increased by 5.58 mg/g (AM120, 2 wk) to 14.16 mg/g (OP360, 6 wk) when compared to average of 3.34 mg PUFAs Ω/g/yolk (CON). Usually, the means DHA also increased from 22.34 (CON) to 176.53 mg (μ, OP360), 187.91 mg (OP360, 8 wk) and 192.96 mg (OP360, 6 wk) and 134.18 mg (μ, OP360), 135.79 mg (AM420, 6 wk), 149.75 mg DHA (AM420, 8 wk) per yolk. The opposite was observed for the means AA, so the effect of the sources, levels and times, decreased (P <0.01) of 99.83 mg (CON) to 31.99 mg (OP360, 4 wk), 40.43 mg (μ, OP360) to 61.21 mg (AM420) and 71.51 mg AA / yolk (μ, AM420). Variations of the average weight of 15.75g (OP360) to 17.08g (AM420) yolks of eggs de 32.55% (AM420) to 34.08% (OP360) of total lipids and 5.28 g (AM240) to 5.84 g (AM120) of fat in the yolk were not affected (p>0.05) by treatments, sources, levels and times studied. Starting of 2 week, the hens increased the level of n-3 PUFAs in the egg yolks, being expressively increased (p<0.01) until 4 weeks, which after the increased levels of n-3 PUFAs tended to if stabilize around of time of 8 experimental weeks, when it was more effective saturation of the tissues and yolk.
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How to cite this article
Paulo Reis de Carvalho, Maria Carolina Goncalves Pita, Eduardo Piber Neto and Cassio Xavier de Mendonca, 2011. Lipid Profile of the Yolk under the Influence of Supplementaries Sources Rich in Ω-3 PUFAs in the Diet of Laying Hens in the Time. Pakistan Journal of Nutrition, 10: 760-772.
DOI: 10.3923/pjn.2011.760.772
URL: https://scialert.net/abstract/?doi=pjn.2011.760.772
DOI: 10.3923/pjn.2011.760.772
URL: https://scialert.net/abstract/?doi=pjn.2011.760.772
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