Regression of the reproductive tract of European quails (Coturnix coturnix) submitted to forced molting by wheat bran diet

Santos, Isabel Cristina Lima; Gomes, Valdiana da Silva; Sampaio, Felipe Pereira; Machado, Débora Nishi; Lima, S.V.G.; Lopes, Elisângela de Souza; Rocha-e-Silva, Roberta Cristina da; Teixeira, Régis Siqueira de Castro; Bezerra, Windleyanne Gonçalves Amorim; Cardoso, William Maciel

doi:10.21708/avb.2014.8.2.3256

Cited by 1 publication

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“…Japanese quail [15] presented weight absolute and relative oviduct of 10.18 g and 3.05%, and ovary of 6.36 g and 2.16%, that are lower in relative to laying hens [16] that presented absolute and relative oviduct weight of 76.98 g and 6.58%, and absolute and relative ovary weight of 36.04 g and 3.08%. However, the relative weight of quail eggs is higher, and may reach 10% of body weight.…”

Section: Peculiaritiesmentioning

confidence: 89%

Amino Acid for Japanese Quails: Methodologies and Nutritional Requirement

Vieira¹,

Costa²,

Lima³

et al. 2017

Amino Acid - New Insights and Roles in Plant and Animal

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The methodologies applied to chickens and laying hens, to determine the digestibility and requirement of protein and amino acids are used with quails, however, they need a more careful evaluation due to peculiarities inherent to the Coturnix genus, in order to provide consistent results. The nutritional requirements of the birds are determinate using the dose-response and the factorial method. Several mathematical models and techniques of diet formulation are allied to the dose-response method in determining nutritional requirements. The curvilinear (hyperbolic) models beter portray population behaviour in response to increasing nutrient doses in diets. The reading model, allow a beter estimation of the requirement, in relation to the mathematical models used in the dose-response method. The techniques of comparative slaughter and nitrogen balance are efective in determining the nutritional requirements of quails, however, the later need to be corrected by the loss of nitrogen in the feathers in determining the requirements of crude protein and amino acids for maintenance. The protein-free diet, coupled with the industrial amino acid supplementation, provides more robust digestibility values, since it more efectively predicts the endogenous excretion patern.

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Section: Peculiaritiesmentioning

confidence: 89%