دانلود رایگان ترجمه مقاله مروری بر فیتات و فیتاز در جوجه ها (سال ۲۰۱۶) (ترجمه ارزان – نقره ای ⭐️⭐️)

فیتات و فیتاز در جوجه ها: یک مقاله مروری

Phytate And Phytase In Broilers –A Review

Abstract

The vegetable feed ingredients used in the preparation of poultry feed contains nearly two thirds of the phosphorus as phytates. The phytates are not only indigestible /unavailable but also are known to interfere with the utilization of other nutrients. Apart from the anti-nutritional effects the phytates bind with other minerals and make them unavialble to the birds. One of the best ways to overcome the ill effects of the phytate is by the use of phytate degrading enzymes (phytase). Hence the present work was undertaken to review the antinutritive effects and by the use of phytase how to ameliorate the ill effects.

۱ Introduction

The exogenous enzymes as additives to animal feedstuffs is gaining acceptance in livestock feed industry. The major feed ingredients of livestock are of vegetable origin. The vegetable feed ingredients contain variable level of and phytate, which cannot be broken down by monogastric animals as they lack some of the needed enzymes.

PHYTATE

Phytate (phytic acid), myoinositol hexakis dihydrogen phosphate, is a normal component of all seeds. Around 70-80 per cent of the phosphorus in the cereal grains and oil seeds exists in the form of phytic acid (Ravindran et al., 1999). Among the feedstuffs it is highest in cereal byproducts (73-84 per cent) followed by oil seed meals (51-82 per cent), cereals and millets (60-73 per cent) (Tyagi et al., 1998). Phytic acid is the main storage form of phosphorous in plants. In general phytate phosphorus is mostly unavailable to birds. Bioavailability of phytate phosphorus in maize and soybean meal for poultry range from 10 to 30 per cent (Nelson, 1967; Calvert et al., 1978).

The total phosphorus, phytate phosphorus and phytic acid content of some commonly used feed ingredients are given in the Table 1.

فیتات و فیتاز در جوجه ها: یک مقاله مروری

Phytate And Phytase In Broilers –A Review