The effect of serine protease on broiler growth and carcass quality

Rada, V.; Lichovnikova, Martina; Foltyn, Marian

doi:10.15414/afz.2014.17.03.87-89

Cited by 9 publications

(10 citation statements)

References 14 publications

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“…These results are in line with the body weight of birds assessed at d 1 -35, which was not influenced due to supplementing RSBM in diets. This result partially disagrees with Rada et al (2014), who reported that the meat parts of broilers were positively affected by the addition of microbial enzymes but the differences may be due to the nature of basal diets.…”

Section: Discussioncontrasting

confidence: 96%

“…Protease supplementation has been shown to improve poultry performance (Cowieson & Adeola, 2005;Rada et al, 2014), although most previous tests were conducted on diets containing only commercial SBM. As reported by scholars (Ravindran, 2013;Amerah, 2015), the mechanisms how the BWG and feed efficiency of birds were improved in the current study when supplementing their diets with microbial protease might also be due to the multi-faceted contribution of this enzyme, including complementarity effects with endogenous enzymes, contribution to reducing the gut viscosity, and by increasing the effectiveness of host (endogenous) enzymes and helping to alter the feed passage rate of the animals.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Partial replacement of commercial soybean meal with raw, full-fat soybean meal supplemented with varying levels of protease in diets of broiler chickens

Erdaw¹,

Perez-Maldonado²,

Bhuiyan³

et al. 2017

SA J. An. Sci.

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A 3 * 3 factorial study was used to evaluate the feed intake (FI), body weight gain (BWG), and feed conversion ratio (FCR) of broilers fed on the test diets. The commercial soybean meal (SBM) was replaced by raw, full-fat soybean meal (RSBM) at 0, 10 or 20%, equivalent to 0, 30 and 60 g/kg of diet, respectively, and the microbial protease was also supplemented in diets at 0.1, 0.2 or 0.3 g/kg, equivalent to ~7500, 15000 and ~22500 PROT/kg of diet, respectively. Microbial phytase (1000 FYT/kg) was uniformly added to each diet, which was fed to six replicate groups, with nine birds per replicate. Samples of test-ingredients and test-diets, after mixing, were also subjected to chemical analysis, prior to being used, to assess the nutritional compositions, particularly anti-nutritional factors. As the result of this study, the analysed concentrations of trypsin inhibitors (TI) in the diets ranging between 1730.5 and 9913.2 TIU/g. Increasing the levels of RSBM in the diets reduced the FI, during 1 to 35 d of age. Except in the starter phase, increasing the level of RSBM had no significant effect on BWG. When protease was added to the diets, the BWG was significantly improved during the periods of 1 -10 d, 1 -24 d and 1 -35 d. Feed efficiency was decreased by increasing the level of RSBM (1-10 d). Neither increasing levels of RSBM nor protease affected the yield of any meat part at d 35. The relative weight of the small intestine at d 10 increased with rising levels of RSBM, but was reduced when protease was added to the diets. In conclusion, commercial SBM could be replaced by RSBM up to 20% in diets for broilers when the test microbial protease is supplemented.

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Section: Discussioncontrasting

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Partial replacement of commercial soybean meal with raw, full-fat soybean meal supplemented with varying levels of protease in diets of broiler chickens

Erdaw¹,

Perez-Maldonado²,

Bhuiyan³

et al. 2017

SA J. An. Sci.

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“…In contrast with other findings, Rada et al (2014) and Olfati et al (2020) noted a significant impact of protease addition on carcass characteristics. Café et al (2002) declared an increase in abdominal fat by supplementing amylase and protease into the diet.…”

Section: Discussioncontrasting

confidence: 99%

“…Results indicated no statistically significant differences among treatments in carcass characteristics and organ weight of broiler. Results of live, carcass, thigh, organ, and abdominal fat%, breast weight, and wings weight were in line with other researchers who reported no significant effect of protease supplementation in broiler diet on the carcass, abdominal fat, and thigh, breast weight, and wing weight ( Kamran et al , 2008 ; Rada et al , 2014 ). Similarly, Freitas et al (2011) and Mehmood et al (2017) reported no beneficial impact of protease addition in broiler diet on carcass yield, abdominal fat, and thigh, breast, and wing weight.…”

Section: Discussionsupporting

confidence: 90%

Growth performance of broiler chickens fed diets supplemented with amylase and protease enzymes individually or combined

Radhi,

Arif,

Rehman

et al. 2023

Open Vet J

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Background: Feed additives that increase nutrient availability in feeds have gained a lot of interest. Aim: An experiment was conducted to determine whether amylase, protease and their combined supplementation affected broiler performance. Methods: Two hundred eighty (280) broiler chicks were selected and distributed randomly into 28 replicate pens with four treatment groups and seven replicates under Completely Randomized Design (CRD). A total of four diets were developed, having 0, 100g, 100g and 100+100g of control (AP0), amylase (A1), protease (P1) and amylase + protease (AP1)/ton of feed, respectively. Four replicates of each treatment were fed each diet. Each diet was randomly allotted to each group. Ad-libitum feeding was provided to the birds. The feeding program had starter and finisher diets. Upon completion of the experiment, three birds from each pen were slaughtered to analyze the carcass characteristics and organ weight. Results: Differences were insignificant between 100g/ton of amylase supplementation and FI, BWG, or FCR (P>0.05). Supplementation with 100g/ton of protease did not significantly affect FI, BWG, and FCR (P>0.05). Similarly, 100+100g/ton of amylase + protease addition had no significant effect on FI, BWG, and FCR (P>0.05). None of the treatments significantly affected carcass weight, abdominal fat percentage, dressing percentage, drumstick, wings, breast and thigh weights (P>0.05). In addition, there were no significant effects (P>0.05) on the weight of the heart, liver, gizzard, and spleen. Conclusion: In conclusion, amylase, protease, and their combined supplementation at a rate of 100g/ton of feed did not influence BWG, FI, FCR, carcass characteristics, or organ weight.

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“…But the results of studies conducted with protease supplementation are inconsistent because of the diversity of feed ingredients, the types and definitions of protease, and the differences in methodology (Rada et al, 2016;Mohammadigheisar & Kim, 2018). In recent years, several studies have investigated the effects on performance and nutrient digestibility of protease supplementation to LP diets for broilers (Favero et al, 2009;Fidelis et al, 2010;Angel et al, 2011;Freitas et al, 2011;Rada et al, 2014;Mahmood et al, 2017;Law et al, 2018;Mohammadigheisar & Kim 2019). However, little research has focused on the effects on growth performance of protease supplementation to diets that are reduced in crude protein and amino acids (Manangi et al, 2009;Rosa et al, 2009;Fru-Nji et al, 2011;Ndazigaruye et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Supplementing diets for broilers that are low in crude protein and amino acids with protease

Sarica¹,

Yurtseven²,

Polat³

2020

SA J. An. Sci.

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The study evaluated supplementation of broiler diets with a protease enzyme. Six hundred Ross 308 female broiler chicks were acquired at one day of age and randomly distributed to three treatments with five replicates of 40 chicks each. The experimental treatements consisted of i) a positive control diet with normal levels of crude protein, digestible lysine and digestible sulphur containing amino acids (PC); ii) a negative diet with reduced levels of crude protein, digestible lysine and digestible sulphur containg amino acids (NC); and iii) the NC diet augmented with Ronozyme ProAct protease at 200 mg/kg (NC+ENZY). Compared to the other diets, feeding the PC produced the highest final bodyweight (BW), bodyweight gain (BWG), and feed intake (FI) and best feed conversion ratio (FCR) over 0 - 42 days. The PC diet also produced the highest hot and cold carcass yields, ileal protein digestibility and improved the serum biochemistry parameters. Relative to the NC, the NC+ENZY diet increased BW, BWG and FI, improved FCR, increased ileal protein digestibility, hot and cold carcass yields, and the crude protein content of meat. However, it decreased serum triglyceride and very low density lipoprotein (VLDL) cholesterol levels and the crude fat content of meat of broilers. As a result, protease supplementation at the level of 200 mg/kg may not remove the detrimental effects that are caused by a 6% reduction in crude protein and digestible amino acids on performance, hot and cold carcass yields and ileal digestibility of crude protein of broilers. Keywords: broiler, growth performance, low crude protein diet, meat, nutrient digestibility, protease, serum biochemistry parameters

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The effect of serine protease on broiler growth and carcass quality

Cited by 9 publications

References 14 publications

Partial replacement of commercial soybean meal with raw, full-fat soybean meal supplemented with varying levels of protease in diets of broiler chickens

Partial replacement of commercial soybean meal with raw, full-fat soybean meal supplemented with varying levels of protease in diets of broiler chickens

Growth performance of broiler chickens fed diets supplemented with amylase and protease enzymes individually or combined

Supplementing diets for broilers that are low in crude protein and amino acids with protease

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