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Production and reproduction of egg- and meat-type quails reared in different group sizes Rev. Bras. Ciênc. Avic.
Santos,TC; Murakami,AE; Fanhani,JC; Oliveira,CAL.
Egg- and meat-type quails were reared in groups of different sizes with a fixed female-to-male ratio of 2 to 1 and an area of 158 cm² per bird. The aim was to investigate the influence of group size on quail production and reproductive variables. To this end, 360 quails (180 meat and 180 egg-type quails) were assigned in a completely randomized experimental design to one of three treatments with ten replicates each. The treatments consisted of groups with nine, six, or three quails per cage. Birds were observed for three cycles of 14 days. Daily feed intake and feed conversion ratio were influenced (p < 0.05) by group size in both types of quails. Quail type influenced (p < 0.05) daily feed intake, feed conversion, and egg weight due to the typical...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fertility; Hatchability; Quail; Reproduction; Vitelline membrane.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100002
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Effect of different vitamin D sources and calcium levels in the diet of layers in the second laying cycle Rev. Bras. Ciênc. Avic.
Nascimento,GR do; Murakami,AE; Guerra,AFQM; Ospinas-Rojas,IC; Ferreira,MFZ; Fanhani,JC.
This study evaluated the effects of different sources of vitamin D and calcium levels on performance, egg quality and bone strength of hens in the second production cycle. A total of 384 Hy-Line W36 birds with 80 weeks of age were used, alloted into 3 x 4 factorial design (sources of vitamin D: cholecalciferol; 25(OH)D3 and 1.25(OH)2D3 x calcium levels: 2.85, 3.65; 4.45 and 5.25%) with four replicates and eight birds each. The performance was evaluated for three cycles of 28 days each, egg quality was evaluated in the last four days of each cycle and bone strength on the last day of the experimental period. There was no interaction (p &gt; 0.05) between the different sources of vitamin D and calcium levels in all parameters evaluated. There was a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cholecalciferol; 25 hydroxycholecalciferol; 1.25 dihydroxycholecalciferol.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200005
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