The uses of microbial phytase as a feed additive in poultry nutrition – a review

El‐Hack, Mohamed E. Abd; Alagawany, Mahmoud; Arif, Muhammad; Emam, Mohamed; Saeed, Muhammad; Arain, Muhammad Asif; Siyal, Farman Ali; Patra, Amlan Kumar; Elnesr, Shaaban S.; Khan, Rifat Ullah

doi:10.2478/aoas-2018-0009

Cited by 87 publications

(63 citation statements)

References 79 publications

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“…For many years there have been attractive alternative approaches and technologies to address these problems. For the P management issue, there is the use of phytase (phytic acid-specific phosphohydrolases; myo-inositol hexakisphosphate 3-and 6-phosphohydrolase; EC 3.1.3.8 and EC 3.1.3.26) as a feed additive [7,8] and for the human mineral nutrition problem, there is "biofortification" breeding for enhanced mineral density [9]. Both of these alternatives are less challenging to implement and more readily accessible than breeding the lpa trait and perhaps in specific cases have advantages over it, resulting in much wider acceptance, utilization and recognition.…”

Section: Introduction: the Low Phytic Acid Traitmentioning

confidence: 99%

Low phytic acid Crops: Observations Based on Four Decades of Research

Raboy¹

2020

Plants

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The low phytic acid (lpa), or “low-phytate” seed trait can provide numerous potential benefits to the nutritional quality of foods and feeds and to the sustainability of agricultural production. Major benefits include enhanced phosphorus (P) management contributing to enhanced sustainability in non-ruminant (poultry, swine, and fish) production; reduced environmental impact due to reduced waste P in non-ruminant production; enhanced “global” bioavailability of minerals (iron, zinc, calcium, magnesium) for both humans and non-ruminant animals; enhancement of animal health, productivity and the quality of animal products; development of “low seed total P” crops which also can enhance management of P in agricultural production and contribute to its sustainability. Evaluations of this trait by industry and by advocates of biofortification via breeding for enhanced mineral density have been too short term and too narrowly focused. Arguments against breeding for the low-phytate trait overstate the negatives such as potentially reduced yields and field performance or possible reductions in phytic acid’s health benefits. Progress in breeding or genetically-engineering high-yielding stress-tolerant low-phytate crops continues. Perhaps due to the potential benefits of the low-phytate trait, the challenge of developing high-yielding, stress-tolerant low-phytate crops has become something of a holy grail for crop genetic engineering. While there are widely available and efficacious alternative approaches to deal with the problems posed by seed-derived dietary phytic acid, such as use of the enzyme phytase as a feed additive, or biofortification breeding, if there were an interest in developing low-phytate crops with good field performance and good seed quality, it could be accomplished given adequate time and support. Even with a moderate reduction in yield, in light of the numerous benefits of low-phytate types as human foods or animal feeds, should one not grow a nutritionally-enhanced crop variant that perhaps has 5% to 10% less yield than a standard variant but one that is substantially more nutritious? Such crops would be a benefit to human nutrition especially in populations at risk for iron and zinc deficiency, and a benefit to the sustainability of agricultural production.

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Section: Introduction: the Low Phytic Acid Traitmentioning

confidence: 99%

Low phytic acid Crops: Observations Based on Four Decades of Research

Raboy¹

2020

Plants

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“…With the rise of population in the world and decrease in the use of lands for agriculture practices, several approaches in agriculture systems involve the culture of plants in salinity land for animal feeding [1,2]. Moreover, many countries are suffering from scarcity of freshwater with an increase in the ambient temperature which had led to a decrease in the availability of freshwater.…”

Section: Introductionmentioning

confidence: 99%

High Salt Diet Affects the Reproductive Health in Animals: An Overview

Abdelnour

El‐Hack

Noreldin

et al. 2020

Animals

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Salinity is a reliable issue of crop productivity loss in the world and in certain tropical and subtropical zones. However, tremendous progress in the genetic improvement of plants for salinity tolerance has been made over several decades. In light of this, halophytic plants can be used as animal feeds and have promising features because they are a good feed resource. However, the main constraint of saline pasture systems is the extreme concentration of NaCl salt in drinking water and forage plants for grazing animals. Ecological reports revealed that excess diet salt causes mortality and morbidity worldwide. Animal fed halophytic forages may have adverse effects on growth performance and reproductive function in males and females due to inducing reductions in hormone regulation, such as testosterone, FSH, LH, and leptin. It was indicated that high salt intake promotes circulating inflammatory factors in the placenta and is associated with adversative effects on pregnancy. This review focuses on the scientific evidence related to the effect of high salt intake on growth performance, spermatogenesis, sperm function, and testicular morphology changes in male animals. In addition, the review will also focus on its effect on some female reproductive features (e.g., ovarian follicle developments, placental indices, and granulosa cell function).

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“…Exogenous enzyme supplementation is also widely used to enhance the degradation of soybean protein and inactive anti-nutritional factors during the SSF of SBM (Ma and Wang 2010;Amadou et al 2011). Dietary enzyme supplementation improves the nutritional status and growth performance of broilers (Abudabos 2012;Abudabos and Yehia 2013;Abd El-Hack et al 2018). However, to our knowledge, no study has reported the fermentation conditions of exogenous proteases and probiotics for the SSF of SBM.…”

Section: Introductionmentioning

confidence: 99%

Mixed fermentation of soybean meal by protease and probiotics and its effects on the growth performance and immune response in broilers

Cheng

Hsiao

Wen

et al. 2019

Journal of Applied Animal Research

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Soybean meal (SBM) contains several anti-nutritional factors, which limit the use of soy protein. Exogenous enzyme supplementation and microbial fermentation can reduce anti-nutritional factors and increase the bioavailability of nutrients in SBM. In this study, we investigated the optimal parameters for the solid-state fermentation (SSF) of SBM by protease in combination with probiotics and evaluated its effect on the growth performance and immune response in broilers. Protease in combination with Bacillus subtilis significantly increased the degradation of soybean protein and soybean allergens in a dose-dependent manner during the SSF of soybean meal. Broilers fed 10% fermented SBM (FSBM), which was produced with protease and B. subtilis, consumed more daily feed on average during the entire feeding period than the SBM group did (P < 0.05). Dietary supplementation with 10% FSBM attenuated IL-4 mRNA expression in the spleen and bursa of Fabricius of broilers (P < 0.05). Furthermore, 10%-FSBM-fed broilers had significantly lower serum anti-soybean IgG levels than SBM-fed broilers (P < 0.05). These results suggest that the supplementation of B. subtilis and protease during the SSF of SBM reduces anti-nutritional factors. Moreover, dietary supplementation of 10% FSBM could inhibit the allergic immune response in broilers.

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The uses of microbial phytase as a feed additive in poultry nutrition – a review

Cited by 87 publications

References 79 publications

Low phytic acid Crops: Observations Based on Four Decades of Research

Low phytic acid Crops: Observations Based on Four Decades of Research

High Salt Diet Affects the Reproductive Health in Animals: An Overview

Mixed fermentation of soybean meal by protease and probiotics and its effects on the growth performance and immune response in broilers

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