International Journal of Poultry Science
Efficiency of PUFAs Incorporation from Marine Sources in Yolk Egg’s Laying Hens
Paulo Reis de Carvalho, Maria Carolina Gonçalves Pita, Eduardo Piber Neto and Cلssio Xavier de Mendonça Jr.
1Departamento de Clيnica Médica, da Faculdade de Medicina Veterinلria e Zootecnia,
da Universidade de Sمo Paulo, Orlando Marques de Paiva, no 87, CEP 05508-270, Sمo Paulo, SP, Brazil
Two hundred eighty-eight 32-wk-old Hisex White laying hens were used in this research during
a 10 week 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 efficiency of egg yolk fatty acid enrichment. The Arachidonic Acid (AA), Linoleic (LA) and PUFAs n-6 mean values ranged, respectively, 98.71 mg, 987.70 mg and 1108.92 mg/yolk for the hens fed the CON diet and 38.87 mg, 734.22 mg and 802.79 mg/yolk for the OP360 group. The percentage of AA incorporation (% INC) in egg yolk decreased linearly with the increase of DHA levels in the diets supplemented with OP and AM, from 4.81% (CON) to 2.57% (OP360) and 3.51% (AM420). The efficiency (%) of DHA incorporation into the yolk decreased linearly with increasing of DHA levels in the diet supplemented with OP and AM, from 85.11% (OP120) and 65.28% (AM120) to 49.45% (OP360) and 34.06% (AM420). The levels of DHA in the egg yolk of birds supplemented with OP had significant increase from 22.64 mg/yolk (CON) to 187.91 mg/yolk in OP360 group. PUFAs n-3 means into the eggs were significantly (p<0.05) increased when the groups CON (62.16 mg/yolk) and OP360 (218.62 mg/yolk) were compared.
PUFAs n-3, hens’ eggs, DHA, fish oil, marine algae, PUFAs n-6
Date Deposited : 06 Jul 2011 08:21
Last Modified : 06 Jul 2011 08:21
Official URL: http://www.pjbs.org/ijps/ijps.htm
Volume 8, Number 6, - 2009 , ISSN 1682-8356