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A comparative study of the ovaries in some Brazilian bees (Hymenoptera; Apoidea) Pap. Avulsos de Zool. (São Paulo)
Martins,Gustavo Ferreira; Serrão,José Eduardo.
The present paper concerns the morphological features of ovaries in 33 species of bees with different social behavior patterns. The ovaries of bees were examined under light microscope. They are polytrophic-meroistic ovaries formed for an anterior germarium and a basal vitellarium. The germarium houses the germ cells and in the vitellarium there are follicles arranged linearly. In general the follicle is constituted by a nutritive chamber (a cluster of nurse cells) and an oocyte chamber, both covered by a single epithelial layer of follicular cells. The number of ovarioles per ovary and the number of mature oocyte per ovary were analyzed. Measurements of ovariole length, oocyte size, oocyte width, follicular epithelial height and the intertegular distance...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insect morphology; Ovary; Reproductive tract; Social behavior.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492004000300001
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Development and reproductive performance of beef heifers supplemented with brown rice meal and/or protected fat on temperate grasslands R. Bras. Zootec.
Pizzuti,Luiz Angelo Damian; Alves Filho,Dari Celestino; Brondani,Ivan Luiz; Restle,João; Freitas,Leandro da Silva; Argenta,Flânia Mônego; Machado,Diego Soares; Cardoso,Gilmar dos Santos.
The response of energy supplementation was evaluated on the development and reproductive performance of beef heifers on temperate grasslands. Twenty-eight Charolais × Nellore heifers, with initial average age of 18 months and initial live weight of 274.9 kg were utilized. The animals were maintained on oat + ryegrass pasture and distributed in the following treatments: no supplementation (NS): heifers kept exclusively on pasture; MEG: supplementation with protected fat Megalac®; BRM: supplementation with brown rice meal; BRM+MEG: supplementation with BRM + protected fat. The average final weight of the heifers was of 403.4 kg and corresponded to 89.5% of the adult weight. The body condition of heifers increased linearly with daily increase of 0.012 points,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body condition; Daily weight gain; Intake; Reproductive tract.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000018
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