Disulphide bonds and cross‐linked amino acids may affect amino acid utilization in feather meal fed to rainbow trout (<i>Oncorhynchus mykiss</i>)

Pfeuti, Guillaume; Longstaffe, James G.; Brown, Leonid S.; Shoveller, Anna K.; Taylor, Craig; Bureau, Dominique

doi:10.1111/are.14079

Cited by 11 publications

(12 citation statements)

References 48 publications

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“…The FeM used in this trial consisted of a mixture of steam-hydrolyzed hog hair and broiler feathers (approximately 15% and 85%, respectively). This FeM was from the same batch as FeM1 used in Pfeuti et al [2]. The chemical composition of this FeM (FeM1) is described in Table 1.…”

Section: Feather Meal and Reagentsmentioning

confidence: 99%

“…Table 1. Proximate composition analysis and gross energy and amino acid profiles of feather meals, adapted from Pfeuti et al [2].…”

Section: Feather Meal and Reagentsmentioning

confidence: 99%

“…In previous studies, we have demonstrated that incubating FeM with 0.5% Savinase ® 16L (%FeM v/w), 2% Na 2 SO 3 (%FeM w/w), and 200% buffer (%FeM w/w) for 24 h significantly (p < 0.005) improved the digestibility and bioavailability in FeM fed to rainbow trout (Oncorhynchus mykiss) [1,2]. Moreover, FT-Raman analyses suggested that this pretreatment facilitated the digestibility of protein in FeM by reducing the concentration and conformational stability of disulphide bonds in this feed ingredient [2].…”

Section: Introductionmentioning

confidence: 98%

“…Feather meal (FeM) is a cost-effective and high-protein (75-85%) feed ingredient created through the steam hydrolysis of keratinous coproducts generated by the meat industry [1,2]. Such keratinous waste consists mostly of poultry feathers, but also includes hog hair and hooves.…”

Section: Introductionmentioning

confidence: 99%

“…Despite its interesting characteristics (high in protein and cost-effective), FeM is notorious amongst feed industry stakeholders for its variability in nutritional value [1,2]. Variability in FeM protein digestibility has been associated with the use of diverse raw materials and commercial processing systems under various processing conditions (pressure, temperature, time) by renderers [3].…”

Section: Introductionmentioning

confidence: 99%

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Development of a Novel Enzymatic Pretreatment for Improving the Digestibility of Protein in Feather Meal

et al. 2019

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This study describes the process of developing an enzymatic pretreatment to improvethe nutritional value of feather meal (FeM). In a first experiment, a full factorial design was used toexamine the effects of various incubation conditions on the solubilization of nitrogen in FeM. Weincubated FeM for 3 h with various levels of a commercial alkaline serine protease (Savinase®16L), sodium sulphite (Na2SO3), and digestion buffer. A Savinase® 16L level of 3% (%FeM v/w),Na2SO3 level of 3% (%FeM w/w), and digestion buffer level of 500% (%FeM w/w) were identifiedas the optimal conditions. Under these optimal conditions, 45% of the nitrogen in FeM wassolubilized. In a second experiment, we evaluated the effect of more economically sustainableincubation conditions on the in vitro digestibility of protein (pepsin-HCl digestibility andmultistep protein evaluation) in FeM. Two FeMs were incubated with 0.5% Savinase® 16L (%FeMv/w), 2% Na2SO3 (%FeM w/w), and 200% buffer (%FeM w/w) for 24 h. The pretreatment improvedpepsin-HCl digestibility by 7%–16% and the total tract degradable protein content by 14%–50%.Accordingly, this novel pretreatment could be applied in the animal feed industry to improve thenutritional value of FeM.

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Section: Feather Meal and Reagentsmentioning

confidence: 99%

“…Table 1. Proximate composition analysis and gross energy and amino acid profiles of feather meals, adapted from Pfeuti et al [2].…”

Section: Feather Meal and Reagentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Development of a Novel Enzymatic Pretreatment for Improving the Digestibility of Protein in Feather Meal

et al. 2019

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Nutrients digestibility and growth performance of Nile tilapia (Oreochromis niloticus) fed on oilseed meals with crude papain enzyme

Kirimi

Musalia²,

Magana

et al. 2022

Aquaculture Fish & Fisheries

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In this study, nutrients digestibility and growth performance of Nile tilapia (Oreochromis niloticus) fed on oilseed meals with crude papain enzyme were determined. A control diet (D1) of 30% crude protein (CP) was formulated using fishmeal (FM), soybean meal (SBM), canola meal (CM) and sunflower meal (SFM). The test diets were formulated with replacing 10% CP of FM by SBM (D2), CM (D3) and SFM (D4), respectively.Crude papain enzyme in powder form was incorporated at 0.06%. Digestibility trial was performed using chromium oxide as an inert marker. A feeding trial of 101 days was conducted using a 4 × 2 factorial design with 4 diets (D1, D2, D3 and D4) and 2 papain enzyme inclusion levels at 0.06% and 0% using 720 Nile tilapia fingerlings (7 ± 3 g). The fingerlings were randomly distributed into 8 groups of 3 replicates of 30 fingerlings per net hapa (2 × 1 × 1 m 3 ). Fish were fed twice daily at 5% of their biomass at 10 AM and 4 PM in two equal meals. Apparent digestibility coefficients increased (p < 0.05) on crude papain enzyme supplementation. There was increase in final body weight (47.32 ± 2.10 g) on 0.06% enzyme than without enzyme (0%) (46.17 ± 2.14 g) (p > 0.05). Irrespective of enzyme supplementation, fish fed FM-based diet were larger (56.89 ± 1.37 g) (p < 0.05) than those fed on oilseed meals; SBM (45.59 ± 0.91 g), CM (43.89 ± 2.12 g) and SFM (40.59 ± 1.60 g). Based on the study, 0.06% crude papain enzyme inclusion increased nutrients digestibility and growth performance of Nile tilapia. Therefore, crude papain enzyme is recommended as a feed additive in Nile tilapia diets to promote growth. However, more research is recommended to determine optimum inclusion levels of crude papain enzyme in Nile tilapia diets.

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The effects of using hydrolyzed feather meal, amino acids, and probiotics in the diet of juvenile rainbow trout on growth, digestibility, and expression of growth-related genes

Metin,

Yildiz,

Eldem

et al. 2024

Aquacult Int

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The study investigated the effect of replacing fishmeal by varying levels of hydrolyzed feather meal (HFM) as well as dietary probiotic supplementation on growth performance, digestibility, histology, and gene expression of juvenile rainbow trout (Oncorhynchus mykiss). Five iso-nitrogenous (average of 50.60% crude protein), iso-energetic (average of 21.79 kJ/g), and iso-lipidic (average of 21.86% crude lipid) diets were formulated and fed to triplicate groups of juvenile rainbow trout weighing 29.65 ± 0.39 g (mean ± SD) for 75 days. Dietary treatments included one control (50% fishmeal) and four experimental diets, each containing 2 g/kg probiotics (Lactobacillus plantarum and Bacillus subtilis). The experimental diets included HFM30 (150 g/kg HFM, 9 g/kg lysine, and 4 g/kg methionine), HFM35 (175 g/kg HFM, 11 g/kg lysine, and 5 g/kg methionine), HFM40 (200 g/kg HFM, 13 g/kg lysine, and 6 g/kg methionine), and HFM45 (225 g/kg HFM, 15 g/kg lysine, and 7 g/kg methionine). Up to 40% replacement of fishmeal with HFM showed no significant difference compared to control group in growth performance (P > 0.05). Feed utilization of HFM45 was slightly lower than control and all the other experimental groups. There was no statistically significant difference in FCR value between HFM40 and control groups (P > 0.05). The apparent digestibility coefficients (ADCs) for protein and amino acids were very high in all groups (P < 0.05). Intestinal mucosa and sub‐mucosa layers of experimental fish showed general tissue integrity with no signs of tissue necrosis. For intestinal morphology, where 45% HFM replacement was applied, villus length to crypt depth (VL to CD) and villus surface area (SA) decreased by 46.01% and 44.44%, respectively, compared to the control group (P < 0.05). This situation shows that intestinal morphology can be damaged when the highest level (HFM45) of feather meal is used. Dietary HFM upregulated growth-related genes such as IGF-II, IGFBP-1b, IGFr1a, GDF9, and FGF2 and downregulated GHR-I and IGF-I. Overall, inclusion of HFM at 40% showed similar results to control group in juvenile rainbow trout feeding.

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Disulphide bonds and cross‐linked amino acids may affect amino acid utilization in feather meal fed to rainbow trout (Oncorhynchus mykiss)

Cited by 11 publications

References 48 publications

Development of a Novel Enzymatic Pretreatment for Improving the Digestibility of Protein in Feather Meal

Development of a Novel Enzymatic Pretreatment for Improving the Digestibility of Protein in Feather Meal

Nutrients digestibility and growth performance of Nile tilapia (Oreochromis niloticus) fed on oilseed meals with crude papain enzyme

The effects of using hydrolyzed feather meal, amino acids, and probiotics in the diet of juvenile rainbow trout on growth, digestibility, and expression of growth-related genes

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