Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2024 Dec 13;14(24):3599.
doi: 10.3390/ani14243599.

Heat Stress in Japanese Quails (Coturnix japonica): Benefits of Phytase Supplementation

Apolônio Gomes Ribeiro  1 , Raiane Dos Santos Silva  1 , Dayane Albuquerque da Silva  2 , Júlio Cézar Dos Santos Nascimento  2 , Lilian Francisco Arantes de Souza  2 , Edijanio Galdino da Silva  3 , José Evangelista Santos Ribeiro  4 , Danila Barreiro Campos  3 , Clara Virgínia Batista de Vasconcelos Alves  3 , Edilson Paes Saraiva  1 , Fernando Guilherme Perazzo Costa  1 , Ricardo Romão Guerra  1
Affiliations
Review

Heat Stress in Japanese Quails (Coturnix japonica): Benefits of Phytase Supplementation

Apolônio Gomes Ribeiro et al. Animals (Basel). .

Abstract

In tropical and subtropical climate regions, heat stress is one of the main causes of production losses in laying quails, aggravated by the antinutritional effects of the phytate in diet ingredients, which negatively affect the bioavailability of minerals, especially calcium and phosphorus. This situation results in a reduction in production and the quality of eggs from commercial laying quails. Several nutritional strategies are utilized to reduce the adverse effects of high temperatures and antinutritional factors such as phytate. Among these strategies, the use of exogenous enzymes, such as phytase, stands out as a viable alternative. Phytase breaks down phytate molecules, optimizing the absorption of essential minerals and improving productive performance and egg quality under unfavorable conditions. Specifically, it is recommended to use 1500 FTU of phytase, as it not only reduces the effects of thermal stress but also enhances eggshell thickness and calcium absorption. In this context, this bibliographic review sought to produce a document demonstrating the beneficial effects of the phytase enzyme on the hydrolysis of the phytate molecule, the availability of calcium for Japanese quails (Coturnix japonica), and its implications in thermal stress due to heat.

Keywords: antinutritional factors; calcium absorption; exogenous enzymes; laying quails; phytate.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Myo-inositol (a) and myo-inositol 1,2,3,4,5,6-hexakis dihydrogen phospodium (InsP6) (b).
Figure 2
Figure 2
Hydrolysis of the phytate molecule through the action of the phytase enzyme: I (inositol); P (phosphate); IP6 (myo-inositol hexakisphosphate); IP5 (Myo-inositol pentachysphosphate); IP4 (Myo-inositol tetrakisphosphate); IP3 (Myo-inositol triphosphate); IP2 (Myo-inositol bisphosphate); and IP1 (Myo-inositol monophosphate).
Figure 3
Figure 3
Classification of phytases.
Figure 4
Figure 4
Schematic drawing of transepithelial calcium transport. Integrated model of active epithelial Ca2+ transport. Ca2+ enters the cell from the luminal side via TRPV6, subsequently binds to calbindin-D28K, and is extruded at the basolateral membrane by a Na+/Ca2+ exchanger (NCX1) and/or a plasma membrane Ca2+-ATPase (PMCA1b). The active form of vitamin D [1,25(OH)2D3] stimulates the individual steps of transcellular Ca2+ transport by increasing the expression level of TRPV6, calbindin-D28K and the extrusion systems. TRPV6 (transient receptor potential vanilloid channel type 6); VDR (vitamin D receptor).
Figure 5
Figure 5
Calcium selective channel TRPV6 and Calbindin-D28K. TRPV6 (transient receptor potential vanilloid channel type 6); VDR (vitamin D receptor).
See this image and copyright information in PMC

References

    1. Santos T.C., Gates R.S., Tinôco I.F.F., Zolnier S., Baêta F.C. Behavior of Japanese quail in different air velocities and air temperatures. Pesqui. Agropecuária Bras. 2017;52:344–354. doi: 10.1590/s0100-204x2017000500008. - DOI
    1. Truong L., Miller M.R., Sainz R.D., King A.J. Changes in Japanese quail (Coturnix japonica) blood gases and electrolytes in response to multigenerational heat stress. PLoS Clim. 2023;2:e0000144. doi: 10.1371/journal.pclm.0000144. - DOI
    1. Moraes L.R., Delicato M.E.A., Cruz A.S., Silva H.T.F.N.P., Alves C.V.B.V., Campos D.B., Saraiva E.P., Costa F.G.P., Guerra R.R. Methionine supplementing effects on intestine, liver and uterus morphology, and on positivity and expression of Calbindin-D28k and TRPV6 epithelial calcium carriers in laying quail in thermoneutral conditions and under thermal stress. PLoS ONE. 2021;16:e0245615. doi: 10.1371/journal.pone.0245615. - DOI - PMC - PubMed
    1. Niu Z.Y., Liu F.Z., Yan Q.L., Li W.C. Effects of different levels of vitamin E on growth performance and immune responses of broilers under heat stress. Poult. Sci. 2009;88:2101–2107. doi: 10.3382/ps.2009-00220. - DOI - PubMed
    1. Mehaisen G.M.K., Ibrahim R.M., Desoky A.A., Safaa H.M., El-Sayed O.A., Abass A.O. The importance of propolis in alleviating the negative physiological effects of heat stress in quail chicks. PLoS ONE. 2017;12:e0186907. doi: 10.1371/journal.pone.0186907. - DOI - PMC - PubMed

LinkOut - more resources