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#Enzymes in poultry nutrition
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Article published the March 14, 2024
All grains, vegetable-based protein meals and their by-products used in poultry diets contain some levels of phytate phosphorous (PP). Depending on the ingredient type and source, a typical broiler chicken diet would contain between 2.2 to over 3.5 g/kg dietary PP. Research has shown that phytate anti-nutritional effects can reduce the digestibility of amino acids (AA) and minerals. Previously the ...
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This member gave a presentation on February 21, 2024
At the following event:
35th Annual Australian Poultry Science Symposium
Article published the January 16, 2024
I. INTRODUCTIONPhytase is commonly used in broiler diets at a typical dose level of 1000 FTU/kg feed to increase the P availability from phytate and reduce the need for inorganic phosphate inclusion. Increasing the phytase dose above this level is expected to further reduce the need to add inorganic phosphate and further reduce P excretion. In addition, if a phytase can break down phytate quickly ...
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Article published the January 12, 2024
I. INTRODUCTIONMannan is a plant based-NSP derived from polymerisation of mannose sugars, it is categorised as galactomannan or glucomannan based on the presence of galactose and glucose side chains (Aspinall, 1973). Generally, galactomannan is the dominant form in legumes (Sundu et al., 2012). The ratio between mannose to galactose dictates the water solubility of galactomannan where galactose ha ...
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Article published the September 11, 2023
I. IntroductionWheat and sorghum are the two major feed grains used in Australia for broiler diets; however, wheat is more common and is usually considered better quality than sorghum. The local chicken meat industry may have to increase by 60% to meet demand in 2050 so strategies are needed to promote sustainable chicken-meat production to meet this anticipated demand. Crude protein reductions in ...
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Article published the September 11, 2023
Trace minerals are often supplied in the forms of inorganic salts such as sulphates into poultry feed to meet the requirements. The ionic bonds in inorganic salts of minerals are very weak allowing the metal ion to disassociate once in contact with water, binding up diet antagonists such as other minerals, vitamins, and enzymes. To mitigate these negative effects technologies such as organic miner ...
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Article published the July 31, 2023
I IntroductionIn recent years, based on ideal amino acids profile, a moderate reduction in dietary CP, 20 to 30 g/kg, has been reported to maintain broiler chicken performance and processing yields. However, further reduction of CP more than 30 g/kg has been shown to compromise bird performance and increase adipose fat accumulation (Kidd et al, 2021). These reduced CP levels are usually achieved b ...
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Article published the June 22, 2023
I. INTRODUCTION The inclusion of 175 g/kg fishmeal, essentially at the expense of soybean meal, in sorghum-based broiler diets was shown to improve weight gain by 12.1% (1260 versus 1124; P < 0.001) and feed conversion ratio by 8.13% (1.299 versus 1.414; P < 0.001) from 15 to 28 days post-hatch (Sydenham et al., 2017). The dietary treatments had an average crude protein (CP) content of 222 g ...
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Article published the June 9, 2023
I. INTRODUCTION Phytic acid salts or phytate constitutes up to 70 % of the phosphorous (P) stored in cereal grains and oilseed meals and this P is poorly utilized by poultry due to limited endogenous phytase secretion (Ravindran, 1995). Therefore, exogenous phytase is routinely used in poultry feed worldwide to address the issue of optimizing P utilization and mitigating the negative impact of die ...
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This member gave a presentation on February 7, 2023
At the following event:
34th Annual Australian Poultry Science Symposium
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