Sodium levels for Japanese quail at initial phases

Cruz

et al. 2020

Braz. J. Poult. Sci.

The objective of this study was to determine the ideal requirement of sodium to molted laying hens. The experimental period lasted 105 days, divided into five periods of 21 days. Hisex White laying hens 150 with 84 weeks-of-age were used. The experimental design was completely randomized in a factorial scheme (5x3) with treatments constituted by five levels of sodium (0.10, 0.15, 0.20, 0.25, and 0.30%) in the diets, and three postmolt stages (early = 21 days, medium = 63 days, and final = 105 days). Performance and egg quality results were evaluated by Tukey test at 5%. Eggshell resistance and weight gain results were evaluated by polynomial regression at 5%. Except the yolk height, all performance and egg quality variables were affected (p<0.05) by the sodium levels and the hens' age postmolt. The level of 0.15% of sodium in diets to postmolt laying hens provided better performance and egg quality, especially in the eggshell. Higher levels of sodium negatively affected the performance and egg quality. Hens in the early stage of postmolt period presented better performance and egg quality. At long-term, the postmolt hens presented worst results.

Section: Discussionmentioning

confidence: 99%

Requirement of Sodium to Molted Laying Hens

Cruz

et al. 2020

Braz. J. Poult. Sci.

“…to Gal-Gaber et al(2003) andCosta et al (2012) under conditions of electrolyte imbalance, caused by the ingestion of feed rich in chloride and especially sodium, there is an alteration in the kinetic behavior of the small intestine of birds, possibly with the reduction of nutrient absorption by the sodium and potassium pump, especially calcium. With the reduction in absorbed calcium, a smaller amount of this mineral will be available for eggshell formation, producing eggs with a more fragile shell.The results obtained for shell quality differed from those found byGernat (2001), who tested soybean meal replacement up to 80% by SWM and observed no signi cant effect on the speci c density of eggs from laying hens, andCarranco et al (2003) who found no signi cant differences in egg shell thickness of eggs from hens fed levels up to 25% inclusion of SWM.…”

mentioning

confidence: 86%

Nutritional evaluation of shrimp waste and its inclusion in laying diet for European quails

Fileto

Freitas

Nepomuceno

et al. 2022

Preprint

The present research aimed to evaluate the shrimp waste meal (SWM) in the diet of European quails in the production phase. Firstly, a metabolism trial was carried out with 96 quails of 28 days of age distributed in an completely randomized design (CRD) with three treatments (reference diet and two test diets in which SWM replaced 20% and 40% of the reference diet) and four replications of eight birds. It was observed that the nutritional composition of SWM is within the variation found in the literature, differing only in the sodium content. There was no difference in apparent metabolizable energy (AME) and apparent corrected for nitrogen balance (AMEn) values. In the performance trial 200 quails of 28 weeks of age were distributed in a CRD with four treatments (0, 5, 10 and 15.0% of inclusion of SWM) and five replications of ten birds. There was reduction in the nitrogen metabolization coefficient (NMC) with the inclusion of 15% SWM. The feed intake, production and egg mass worsened with 15% inclusion, causing a linear reduction of these variables. The inclusion of SWM at all levels reduced the values of specific gravity and Hugh units, and the level 15% promoted reduction in shell percentage and shell thickness. No difference was observed on any of the economic variables. It was concluded that the AMEn of SWM is 2,377 kcal/kg DM and that the inclusion of SWM in the diet of quails in production can be up to 10%.

Sodium requirement of japanese laying quail

Lima

Morais

Barreto

2020

RSD

A study was conducted in order to estimate the sodium requirements of Japanese laying quail (Coturnix coturnix japonica). In this study, we used 280 Japanese quails at 128 days of age, with an average weight of 9 ± 5.2 g, and an egg production rate of 82.3 ± 0.94%. An experimental design methodology was employed, completely randomized with five treatments and seven replications. Each replicate consisted of eight quails, with a total of thirty-five experimental units. The experimental diets were based on corn and soybean meal, and contained five different levels of sodium (0.08%, 0.12%, 0.16%, 0.20% and 0.24%). The diets were isocaloric and contained equal concentrations of amino acids, with an electrolyte balance of 250 mEq/kg. The parameters we evaluated were feed intake (g/quail/day); egg production per quail per day (%); egg weight (g); egg mass (g/quail/day); and feed conversion by egg mass (kg/kg) and per dozen eggs (kg/dz). In addition, we evaluated the composition of the eggs in terms of the absolute (g) and relative (%) mass of the yolk, albumen and eggshell. We also measured the body weight variation (g) and viability (%) of the quails. There were no significant effects (p>0.05) on the described parameters. No nutritional disorders occurred related to the level of inclusion of sodium in the diets. The inclusion of 0.08% sodium in the diet of laying Japanese quails was satisfactory to maintain egg production and quality without losses in feed intake or feed conversion.