Lowering the dietary protein levels by the use of synthetic amino acids and the use of a mono component protease

Vieira, S. L.; Stefanello, C.; Cemin, Henrique S

doi:10.1016/j.anifeedsci.2016.07.001

Cited by 23 publications

(19 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Many studies have reported adding enzyme blends containing proteases to the poultry diet (Rahman et al, 2009). In this respect, Vieira et al (2016) reported that, in the case of endogenous proteases, peptide bond specificity directly affects the rate of protein hydrolysis and the quantity of peptides and AA released and made available for absorption. Table (3) indicated that level of CP was insignificant effect of FI during all periods studies except the period from 6 to 12 days of age which was significantly affected.…”

Section: -Productive Performancementioning

confidence: 99%

“…Nutritionists can employ protease and synthetic Val. supplementation to achieve additional CP reduction (Vieira et al, 2016). Ding et al (2016), reported that the protease supplementation (300 mg/kg) had no effects on LBWG or FI, while, FC was slightly improved (1.4%) between 1 and 21 days of age.…”

Section: -Productive Performancementioning

confidence: 99%

“…The relative efficiency varied between 80.36%, to 129.92%, which is of minor importance relative to other factors of production. In this respect, Vieira et al (2016) stated that feeds formulated with reduced CP are less expensive. The results of this study are disagreement with those of Abd El-Gawad et al (2004) and Ragab et al (2012) who found that broiler chicks fed diets containing either optimum level of CP or adding probiotics, EEf values were increased.…”

Section: -Economical Efficiency (Eef)mentioning

confidence: 99%

“…So, efforts to reduce dietary protein level have been the subject of numerous investigators. Low protein diets supplemented with the requirements of essential amino acids (EAAs) are recommended for poultry reared in normal and heat stress conditions (Aftab et al, 2006 andVieira et al, 2016). Using T such diets reduces feed cost, reduces the risk of N pollution of the environment through reducing N excretion by the birds (Vieira et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Low protein diets supplemented with the requirements of essential amino acids (EAAs) are recommended for poultry reared in normal and heat stress conditions (Aftab et al, 2006 andVieira et al, 2016). Using T such diets reduces feed cost, reduces the risk of N pollution of the environment through reducing N excretion by the birds (Vieira et al, 2016). Reduced N excretion lowers ammonia level in the poultry house (this may also reduce sticky and wet litter, hock burns and breast blisters), thus reducing excrete excess nitrogen in the form of uric acid (Mahmood et al, 2017) and lowers the energetic efficiency of protein use as an energy source.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effects of Dietary Protein Levels With or Without Synthetic Amino Acids and Enzyme Supplementation on Performance of Broiler Chickens

Emam

2018

Egyptian Journal of Nutrition and Feeds

View full text Add to dashboard Cite

his experiment was conducted to study the effect of using two levels of (recommended (R), R-2%) crude protein (CP) supplemented with or without the requirements of methionine and lysine (Met. and Ly.) and each with two levels (0.00 and 0.10%) of Avizyme 1500 in 2 x 2 x 2 factorial arrangement (giving eight dietary treatments) on growth performance of broiler chickens (Ross strain). Accordingly, a total numbers of 192 one-day old unsexed Ross broiler chickens were initially fed a control diet for five days. At six days of age, chicks were randomly allotted to the dietary treatments, birds were divided into eight treatments (24 birds each), each treatment contained three replicates of eight birds each. Results obtained could be summarized in the following: The main effects of level of CP had insignificant effect on live body weight (LBW), live body weight gain (LBWG), feed intake (FI), feed conversion (FC) and performance index (PI) during finisher (25 to 41) and overall experimental periods (6 to 41 days). Level of CP had significant effect on crude protein conversion (CPC) during the period from 6 to 41 days, chicks fed diet containing R had the worst CPC during same period. Chicks fed adequate amounts of amino acids (AA) supplement diets recorded significantly higher PI value during the period from 6 to 41 days, while, recorded significantly the worst values of FC and CPC during the same period. Level of AA had insignificant effect on LBW, LBWG and FI during overall experimental period. Neither enzyme addition nor interaction between level of CP, AA and enzyme addition had any significant effect on LBW, LBWG, FC, CPC and PI during the period from 6 to 41 days. No significant differences due to level of CP or AA on blood constituents, except, red blood cells count (RBCs) which was significantly affected. Chicks fed diet containing R-2% CP or diet containing inadequate amounts of AA had higher value of RBCs. No significant differences due to enzyme addition and interaction effect of dietary treatments on blood constituents, except, interaction effect on neutrophils% (segment) which was significantly affected. Neither level of CP and enzyme addition nor interaction between level of CP, AA and enzyme addition had any significant effect on slaughter parameters% and tibia weight and ash% at the end of the finishing period. Level of CP, AA and interaction between level of CP, AA and enzyme addition had insignificantly affected chemical composition of broiler meat. Chicks fed diet containing R-2% supplemented with the requirements of Met. and Ly. with 0.10% of Avizyme had the best economical and relative efficiency values during the period from 6 to 41 days of age, as compared with those fed the control diet and other treatments. It can be concluded that, CP can be reduced from the recommended level by 2% and supplement these diets with either Met. and Ly or Avizyme without affecting performance. Besides, using such diets reduces feed cost and N pollution.

show abstract

Section: -Productive Performancementioning

confidence: 99%

Section: -Productive Performancementioning

confidence: 99%

Section: -Economical Efficiency (Eef)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of Dietary Protein Levels With or Without Synthetic Amino Acids and Enzyme Supplementation on Performance of Broiler Chickens

Emam

2018

Egyptian Journal of Nutrition and Feeds

View full text Add to dashboard Cite

show abstract

Land application of industrial wastes: impacts on soil quality, biota, and human health

Silva

Carson

Indrapala

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

Globally, waste disposal options such as landfill, incineration, and discharge to water, are not preferred long-term solutions due to their social, environmental, political, and economic implications. However, there is potential for increasing the sustainability of industrial processes by considering land application of industrial wastes. Applying waste to land can have beneficial outcomes including reducing waste sent to landfill and providing alternative nutrient sources for agriculture and other primary production. However, there are also potential hazards, including environmental contamination. This article reviewed the literature on industrial waste applications to soils and assessed the associated hazards and benefits. The review investigated wastes in relation to soil characteristics, dynamics between soils and waste constituents, and possible impacts on plants, animals, and humans. The current body of literature demonstrates the potential for the application of industrial waste into agricultural soils. The main challenge for applying industrial wastes to land is the presence of contaminants in some wastes and managing these to enhance positive effects and reduce negative outcomes to within acceptable limits. Examination of the literature also revealed several gaps in the research and opportunities for further investigation: specifically, a lack of long-term experiments and mass balance assessments, variable waste composition, and negative public opinion.

show abstract

Introduction

Bedford¹,

O’Neill²

2018

Enzymes in Human and Animal Nutrition

View full text Add to dashboard Cite

Lowering the dietary protein levels by the use of synthetic amino acids and the use of a mono component protease

Cited by 23 publications

References 21 publications

Effects of Dietary Protein Levels With or Without Synthetic Amino Acids and Enzyme Supplementation on Performance of Broiler Chickens

Effects of Dietary Protein Levels With or Without Synthetic Amino Acids and Enzyme Supplementation on Performance of Broiler Chickens

Land application of industrial wastes: impacts on soil quality, biota, and human health

Introduction

Contact Info

Product

Resources

About