Protease Supplementation under Amino Acid Reduction in Diets Formulated with Different Nutritional Requirements for Broilers

Dessimoni, G.V.; Dalólio, Felipe Santos; Moreira, Joerley; Teixeira, LV; Bertechini, A. G.; Hermes, RG

doi:10.1590/1806-9061-2017-0707

Cited by 8 publications

(5 citation statements)

References 23 publications

(27 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The amounts of digestible lysine in diets (as-fed basis; 90% dry matter) are 0.76% and 0.73% for male and female chickens, respectively nitrogen excretion, while improving the efficiency of nutrient utilization, growth and production performance, as well as sustaining the global animal agriculture. It is noteworthy that this new nutritional concept is now widely used to guide the practice of poultry feeding worldwide (e.g., Badawi et al 2019;Belloir et al 2017;Chrystal et al 2020;Dessimoni et al 2019;Liu et al 2016;Refaie et al 2017;Zhang et al 2017b).…”

Section: 65mentioning

confidence: 99%

Amino Acid Nutrition and Metabolism in Chickens

2021

Advances in Experimental Medicine and Biology

View full text Add to dashboard Cite

Both poultry meat and eggs provide high-quality animal protein [containing sufficient amounts and proper ratios of amino acids (AAs)] for human consumption and, therefore, play an important role in the growth, development, and health of all individuals. Because there are growing concerns about the suboptimal efficiencies of poultry production and its impact on environmental sustainability, much attention has been paid to the formulation of low-protein diets and precision nutrition through the addition of low-cost crystalline AAs or alternative sources of animal-protein feedstuffs. This necessitates a better understanding of AA nutrition and metabolism in chickens. Although historic nutrition research has focused on nutritionally essential amino acids (EAAs) that are not synthesized or are inadequately synthesized in the body, increasing evidence shows that the traditionally classified nutritionally nonessential amino acids (NEAAs), such as glutamine and glutamate, have physiological and regulatory roles other than protein synthesis in chicken growth and egg production. In addition, like other avian species, chickens do not synthesize adequately glycine or proline (the most abundant AAs in the body but present in plant-source feedstuffs at low content) relative to their nutritional and physiological needs. Therefore, these two AAs must be sufficient in poultry diets. Animal proteins (including ruminant meat & bone meal and hydrolyzed feather meal) are abundant sources of both glycine and proline in chicken nutrition. Clearly, chickens (including broilers and laying hens) have dietary requirements for all proteinogenic AAs to achieve their maximum productivity and maintain optimum health particularly under adverse conditions such as heat stress and disease. This is a paradigm shift in poultry nutrition from the 70-year-old “ideal protein” concept that concerned only about EAAs to the focus of functional AAs that include both EAAs and NEAAs.

show abstract

Section: 65mentioning

confidence: 99%

Amino Acid Nutrition and Metabolism in Chickens

2021

Advances in Experimental Medicine and Biology

View full text Add to dashboard Cite

show abstract

“…However, Cardinal et al [16] observed a significant reduction in FCR from 1.73 to 1.60 in birds fed the protease supplemented low CP/AA diets. In a similar study with a different protease (a mono-component protease), Dessimoni et al [17] reported similar findings i.e. no difference in performance between the low CP/AA (10% reduction) and the protease supplemented diets.…”

Section: Source Of Variations/treatmentsmentioning

confidence: 68%

Protease Complex Reduces Potentially Pathogenic Microbial Populations in the Ileum While Optimizing Performance of Broiler Chickens

Chowdhury¹,

Dhara²,

Dey³

et al. 2021

AVS

View full text Add to dashboard Cite

A 42-day trial was conducted to assess the effects of a dietary protease on growth performance and ileum population of selected bacteria in broiler chickens fed standard diets and diets deficient in crude protein and digestible amino acids (CP/AA, ~5%) or apparent metabolizable energy (AME, 50 kcal/kg) or both. Reducing CP/AA and AME negatively affected average daily weight gain (ADG, P < 0.05) and feed conversion ratio (FCR, P < 0.05). Dietary protease improved BW at 42-d (P = 0.021, linear effect) of birds fed both standard and nutrient deficient diets but improved FCR (P = 0.0002) was only observed when supplemented to the standard diet. Serum protein concentration was not affected by the level of CP/AA and AME but decreased linearly with the level of protease (P = 0.02). Numbers of Escherichia coli¸ Salmonella spp. and Clostridium perfringens increased (P = 0.0001) with the decrease of dietary CP/AA and AME. In contrast, the numbers of studied bacteria linearly decreased (P = 0.0001) with dietary protease level. Dietary protease was found to decrease the numbers of Clostridium perfringens (P = 0.0001) when supplemented to either low CP/AA or low AME diets. It can be concluded that protease supplementation sustained the harvesting biomass in the experimental birds fed lower nutrient density diets and decreased the numbers of resident bacteria in the hind gut, some of which might be potential pathogens. Hence, the study documented not only the nutrient sparing effects but also the extra-proteinaceous effect in terms of gut health of dietary protease in broiler chickens.

show abstract

“…In these cases, the effects of dietary protease were more effective. Greater protease effect was also observed by Dessimoni et al (2019) when it reduced dietary protein levels.…”

Section: Discussionmentioning

confidence: 89%

Apparent total tract and ileal amino acids digestibility values of vegetal protein meals with dietary protease to broiler diet

Bertechini

Dalólio

Carvalho

et al. 2020

Translational Animal Science

View full text Add to dashboard Cite

This experiment was carried out to study the effect of dietary exogenous monocomponent protease on the coefficient apparent total tract (ATTD) and apparent ileal (AID) digestibility of amino acids of corn, soybean meal (SBM) and full fat soybean meal (FFSM) in broilers. A total of 400 males Cobb-500 (14 days of age) were equally allocated in 80 metabolic cages (50 x 50 x 45 cm) in a completely randomized design and a semi-controlled environment. Eight treatments (basal diet with or without a protease and three ingredients replacing the basal diets in 40 % to corn and 30 % to SBM and FFSM, with and without protease), with 10 replicates each were evaluated. The protease was added at 200 mg/kg resulting in 15,000 unit of PROT/kg .The total collection of excreta was held during three days, after five days for adaptation of broilers at the diets. The ileal content was collected on day 21, after slaughter of birds. The enzyme increased (P < 0.05) the ATTD and AID of most amino acids contained in SBM and FFSM. The digestibility of cysteine, glycine, proline and threonine had higher (P<0.05) ATTD and AID in all tested ingredients with the use of protease. On average, the dietary protease increased in 5.19 % and 3.86 % the total and ileal digestibility of amino acids, respectively. It was concluded that the dietary protease exerts major effects on toasted full-fat soybean, followed by soybean meal and corn to broilers.

show abstract

Protease Supplementation under Amino Acid Reduction in Diets Formulated with Different Nutritional Requirements for Broilers

Cited by 8 publications

References 23 publications

Amino Acid Nutrition and Metabolism in Chickens

Amino Acid Nutrition and Metabolism in Chickens

Protease Complex Reduces Potentially Pathogenic Microbial Populations in the Ileum While Optimizing Performance of Broiler Chickens

Apparent total tract and ileal amino acids digestibility values of vegetal protein meals with dietary protease to broiler diet

Contact Info

Product

Resources

About