4.7 Article

Dietary exogenous phytase improve egg quality, reproductive hormones, and prolongs the lifetime of the aging Hy-Line brown laying hens fed nonphytate phosphorus

Related references

Note: Only part of the references are listed.
Article Agriculture, Dairy & Animal Science

Minimum phosphorus requirements for laying hen feed formulations

Markus Rodehutscord et al.

Summary: The objective of this contribution is to summarize the optimal concentration of nonphytate phosphorus (NPP) in feed for laying hens from scientific literature. The data suggests that the NPP concentration in feed should not exceed 2.2 g NPP/kg without the use of phytase, as it shows no positive effect on performance and eggshell. The addition of phytase to the feed can reduce this value, but precise values of reduction cannot be calculated due to insufficient data.

POULTRY SCIENCE (2023)

Article Physiology

Impact of growth trajectory on sexual maturation in layer chickens

Mohammad A. Bahry et al.

Summary: Recent studies have shown that metabolic triggers can independently activate sexual maturation and egg production in chickens. However, the specific mechanisms and targets of this metabolic control remain unknown. This study aimed to determine the thresholds of body weight and body composition that trigger spontaneous sexual maturation in layer pullets under different growth trajectories. The results indicate that feed allocation affects the growth and body composition in a strain-dependent manner, leading to different age at sexual maturation and egg production.

FRONTIERS IN PHYSIOLOGY (2023)

Article Agriculture, Dairy & Animal Science

Minimum phosphorus requirements for laying hen feed formulations

Markus Rodehutscord et al.

Summary: The optimal concentration of nonphytate phosphorus (NPP) in feed for laying hens was summarized from scientific literature. The results showed that increasing the NPP concentration above 2.2 g NPP/kg of feed without phytase supplementation did not have a positive effect on performance and eggshell quality. Therefore, laying hens in different stages of production require no more than 2.2 g NPP/kg of feed. This value can be reduced when phytase is added to the feed, but there are insufficient data to determine the precise reduction rate.

POULTRY SCIENCE (2023)

Article Agriculture, Dairy & Animal Science

Effect of Bacterial or Fungal Phytase Supplementation on the Performance, Egg Quality, Plasma Biochemical Parameters, and Reproductive Morphology of Laying Hens

Ahmed A. Saleh et al.

Summary: The study demonstrates that supplementation with bacterial and fungal phytase at 5000 FTU/kg in laying hens' diets can effectively replace inorganic phosphorus, enhance eggshell and yolk quality, without affecting productive performance.

ANIMALS (2021)

Article Agriculture, Dairy & Animal Science

The adaptability of Hy-Line Brown laying hens to low-phosphorus diets supplemented with phytase

Zhouzheng Ren et al.

POULTRY SCIENCE (2020)

Review Agriculture, Dairy & Animal Science

THE USES OF MICROBIAL PHYTASE AS A FEED ADDITIVE IN POULTRY NUTRITION - A REVIEW

Mohamed E. Abd El-Hack et al.

ANNALS OF ANIMAL SCIENCE (2018)

Article Agriculture, Dairy & Animal Science

Limestone particle size and Aspergillus niger phytase in the diet of older hens

Michaela Englmaierova et al.

ITALIAN JOURNAL OF ANIMAL SCIENCE (2017)

Article Agriculture, Dairy & Animal Science

Effect of superdosing phytase on productive performance and egg quality in laying hens

Jong Hyuk Kim et al.

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES (2017)

Article Agriculture, Dairy & Animal Science

Effect of Dietary Phytase Transgenic Corn on Physiological Characteristics and the Fate of Recombinant Plant DNA in Laying Hens

Chunqi Gao et al.

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES (2014)

Article Agriculture, Dairy & Animal Science

The efficacy of a phytase enzyme fed to Hy-Line W-36 laying hens from 32 to 62 weeks of age

E. Meyer et al.

JOURNAL OF APPLIED POULTRY RESEARCH (2011)

Article Agriculture, Dairy & Animal Science

Effects of sodium gluconate and phytase on performance and bone characteristics in broiler chickers

Yanli Guo et al.

ANIMAL FEED SCIENCE AND TECHNOLOGY (2009)

Article Agriculture, Dairy & Animal Science

Comparative Effects of Phytase Derived from Escherichia coli and Aspergillus niger in Sixty Eight-week-old Laying Hens Fed Corn-soy Diet

L. Yan et al.

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES (2009)

Article Agriculture, Dairy & Animal Science

Calcium and available phosphorus levels for laying hens in second production cycle

K Pelicia et al.

Brazilian Journal of Poultry Science (2009)

Review Agriculture, Dairy & Animal Science

Significance of phytic acid and supplemental phytase in chicken nutrition: a review

P. K. Singh

WORLDS POULTRY SCIENCE JOURNAL (2008)

Article Agriculture, Dairy & Animal Science

Efficacy of phytases on egg production and nutrient digestibility in layers fed reduced phosphorus diets

N. Liu et al.

POULTRY SCIENCE (2007)

Review Agriculture, Dairy & Animal Science

Microbial phytase in poultry nutrition

Peter H. Selle et al.

ANIMAL FEED SCIENCE AND TECHNOLOGY (2007)

Article Agriculture, Dairy & Animal Science

Effects of dietary non-phytate phosphorus levels on egg production, shell quality and nutrient retention in white leghorn layers

AK Panda et al.

ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES (2005)

Article Agriculture, Dairy & Animal Science

Exogenous phytase activity in the gastrointestinal tract of broiler chickens

B Yu et al.

ANIMAL FEED SCIENCE AND TECHNOLOGY (2004)

Article Agriculture, Multidisciplinary

Phytase and acid phosphatase activities in plant feedstuffs

A Viveros et al.

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY (2000)