scholarly journals Effects of guavira fruit (Campomanesia adamantium) peel extract on performance and meat quality of broilers

2021 ◽  
Vol 51 (1) ◽  
Author(s):  
M.L. Lohmann ◽  
C. Eyng ◽  
R.V. Nunes ◽  
E.J.S. Argandona ◽  
C.A.C. Correia ◽  
...  
Keyword(s):  
Meat Quality ◽  
Conversion Ratio ◽  
Feed Conversion ◽  
Fruit Peel ◽  
Carcass Yield ◽  
Quadratic Effect ◽  
Hydroethanolic Extract ◽  
Water Holding ◽  
Peel Extract

This article assessed the performance, carcass yield, and meat quality of finishing broilers fed increasing levels of hydroethanolic extract of guavira fruit peel (HEGP) were assessed. A total of 480, three-weeks-old male broilers were randomly allocated to dietary levels of HEGP (0, 100, 200, 300, 400, and 500 mg/kg), with five replicates and 16 birds each. There was a quadratic effect of HEGP inclusion on weight gain (WG) and feed conversion ratio (FCR), with the greatest WG and FCR being calculated at levels of 314 and 219 mg/kg HEGP, respectively. Broilers fed diets containing the extract had better performance than those fed an extract-free diet. There was no effect of extract inclusion on carcass yield and cuts. There was a quadratic effect of HEGP inclusion on a* (redness) of thigh meat at 15 min post-mortem, and on water-holding capacity (WHC), with the lowest and highest values being calculated at 270 mg/kg and 263 mg/kg HEGP, respectively. There was a quadratic influence of HEGP inclusion on the malonaldehyde content at 30-day storage, with highest value being calculated at 218 mg/kg HEGP. Dietary inclusion of 219 mg/kg of HEGP resulted in better FCR for broilers in the finishing phase but without improvement in meat quality.

scholarly journals Dry residue of cassava as a supplementation in broiler feed with or without addition of carbohydrases

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2641 ◽  
Author(s):  
Jomara Broch ◽  
Ricardo Vianna Nunes ◽  
Vladimir De Oliveira ◽  
Idiana Mara da Silva ◽  
Cleison De Souza ◽  
...  
Keyword(s):  
Meat Quality ◽  
Broiler Chickens ◽  
Blood Parameters ◽  
Feed Conversion ◽  
Breast Meat ◽  
Carcass Yield ◽  
Linear Effect ◽  
Blood Glucose Concentrations ◽  
Water Holding

The objective of this study was to evaluate the inclusion of dry residue of cassava (DRC) with or without supplementation of carbohydrases on performance, carcass yield, cuts and organs, blood parameters and meat quality of broiler chickens. Birds were distributed in a completely randomised design in a 2 x 5 factorial scheme, with or without addition of carbohydrases and five levels of DRC inclusion, resulting in 10 treatments with 5 replicates of 22 birds each. At 21 days of age, two birds of each treatment were fasted for 6 hours for blood brachial puncture. At 42 days, four birds per pen were slaughtered to determine carcass yield, cuts, organs, percentage of abdominal fat and meat quality. Between 1-21 days of age, there was an interaction (P < 0.05) between carbohydrase and DRC supplementation on weight gain (WG) and feed intake, which showed a decreasing linear effect without the inclusion of carbohydrases. In the period from 1 to 42 days, there was an interaction (P < 0.05) between carbohydrase supplementation and DRC inclusion on the variables WG and feed conversion. Carbohydrase inclusion provided an increase (P < 0.05) in the concentrations of cholesterol, triglycerides, creatinine, gamma GT and blood glucose. Concentrations of gamma GT were increased and levels of alanine aminotransferase and creatinine were decreased (P < 0.05) with DRC inclusion. At 24 hours post mortem, there was a significant interaction (P < 0.05) for breast meat between carbohydrase supplementation and DRC inclusion for the variable L. The analysed values of pH, water holding capacity and shear force of the breast meat were not affected (P > 0.05) by DRC inclusion and carbohydrase addition. However, cooking loss was influenced (P < 0.05) by levels of inclusion of DRC. The L and a* variable and the feet of broiler chickens were not affected (P > 0.05) by DRC levels and carbohydrase addition. The colour variable b* showed a decrease (P < 0.05) from 5% level of inclusion. The results of this study show that DRC can be used in the diets of broiler chickens from 1 to 21 days old to the assessed level of 10%, provided that carbohydrase is added.

scholarly journals Exogenous enzymes in diets for broilers

2016 ◽  
Vol 17 (2) ◽  
pp. 149-161 ◽  
Author(s):  
Felipe Santos DALÓLIO ◽  
Joerley MOREIRA ◽  
Diego Pereira VAZ ◽  
Luiz Fernando Teixeira ALBINO ◽  
Leonora Ribeiro VALADARES ◽  
...  
Keyword(s):  
Meat Quality ◽  
Broiler Chickens ◽  
Broiler Chicks ◽  
Enzyme Complex ◽  
Feed Conversion ◽  
Carcass Yield ◽  
Randomized Design ◽  
Exogenous Enzymes ◽  
Water Holding

SUMMARY The aimed of the study was to evaluate the effect of the inclusion of different levels of an enzyme complex consisting of phytase, protease, xylanase, β-glucanase, cellulase, amylase, and pectinase on the parameters of performance, carcass yield and meat quality of broilers. Six hundred broiler chicks were used, and the animals were females with one day of age, from the Cobb 500 strain, and distributed in a completely randomized design, with five levels of inclusion of the enzyme complex (0, 100, 200, 300 and 400g/ton), and six repetitions, with twenty animals each. The weight gain, feed conversion ratio, feed intake and production viability were assessed in stages between 1 to 21, 1 to 35 and 1 to 42 days of age. The carcass yield and meat quality were evaluated at 35 and 42 days of age. We evaluated the characteristics of weight loss by cooking, shear force, water holding capacity, pH, lightness and color. The parameters of performance, carcass yield and carcass parts, and meat quality were not affected by the enzyme supplementation of diets fed to broiler chickens (P>0.05), except for the performance characteristics of the breast and the wings at 42 days of age (P<0.05).

scholarly journals Ducks’ Growth, Meat Quality, Bone Strength, and Jejunum Strength Depend on Zeolite in Feed and Long-Term Factors

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1015
Author(s):  
Jakub Biesek ◽  
Mirosław Banaszak ◽  
Marek Adamski
Keyword(s):  
Body Weight ◽  
Meat Quality ◽  
Body Weight Gain ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Water Holding Capacity ◽  
Feed Conversion ◽  
Water Holding

The safety of production and the high quality of meat are important aspects of rearing poultry, especially when natural solutions are used. Because of the increasing popularity of duck meat, the aim of the present study was to assess the effect of a diet with an inclusion of zeolite on the growth performance, meat quality, and strength of the bones and jejunum in ducks of different origin, sex, and age at slaughter. The study was conducted on 320 Orvia and Cherry Valley ducks. Birds were allocated to eight groups, according to their sex and origin. Half of the birds received feed with a 4% inclusion of zeolite. Body weight gain, feed intake, and feed conversion ratio per kilogram of gain were calculated. After six or seven weeks, five birds from each group were selected and slaughtered. After dissection, meat quality (pH, water-holding capacity, colour) and the strength of the bones and gut were analysed. The analysis revealed that zeolite was associated with reduced body weight gains and increased feed conversion ratio, but with a higher water-holding capacity of breast muscles in seven-week-old ducks, and with a higher yellowness and water-holding capacity of leg muscles in six-week-old ducks. A positive effect of long-term factors (age, sex, origin) and the interaction with zeolite was found for most of the analysed traits. Findings on the effect of 4% inclusion of zeolite in duck diet were inconclusive. The study implies the need for further research, since zeolite has potential as a natural sanitizing agent and can improve the quality of produced duck meat.

scholarly journals Dry residue of cassava as a supplementation in broiler feed with or without addition of carbohydrases

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2641
Author(s):  
Jomara Broch ◽  
Ricardo Vianna Nunes ◽  
Vladimir De Oliveira ◽  
Idiana Mara da Silva ◽  
Cleison De Souza ◽  
...  
Keyword(s):  
Meat Quality ◽  
Broiler Chickens ◽  
Blood Parameters ◽  
Feed Conversion ◽  
Breast Meat ◽  
Carcass Yield ◽  
Linear Effect ◽  
Blood Glucose Concentrations ◽  
Water Holding

The objective of this study was to evaluate the inclusion of dry residue of cassava (DRC) with or without supplementation of carbohydrases on performance, carcass yield, cuts and organs, blood parameters and meat quality of broiler chickens. Birds were distributed in a completely randomised design in a 2 x 5 factorial scheme, with or without addition of carbohydrases and five levels of DRC inclusion, resulting in 10 treatments with 5 replicates of 22 birds each. At 21 days of age, two birds of each treatment were fasted for 6 hours for blood brachial puncture. At 42 days, four birds per pen were slaughtered to determine carcass yield, cuts, organs, percentage of abdominal fat and meat quality. Between 1-21 days of age, there was an interaction (P < 0.05) between carbohydrase and DRC supplementation on weight gain (WG) and feed intake, which showed a decreasing linear effect without the inclusion of carbohydrases. In the period from 1 to 42 days, there was an interaction (P < 0.05) between carbohydrase supplementation and DRC inclusion on the variables WG and feed conversion. Carbohydrase inclusion provided an increase (P < 0.05) in the concentrations of cholesterol, triglycerides, creatinine, gamma GT and blood glucose. Concentrations of gamma GT were increased and levels of alanine aminotransferase and creatinine were decreased (P < 0.05) with DRC inclusion. At 24 hours post mortem, there was a significant interaction (P < 0.05) for breast meat between carbohydrase supplementation and DRC inclusion for the variable L. The analysed values of pH, water holding capacity and shear force of the breast meat were not affected (P > 0.05) by DRC inclusion and carbohydrase addition. However, cooking loss was influenced (P < 0.05) by levels of inclusion of DRC. The L and a* variable and the feet of broiler chickens were not affected (P > 0.05) by DRC levels and carbohydrase addition. The colour variable b* showed a decrease (P < 0.05) from 5% level of inclusion. The results of this study show that DRC can be used in the diets of broiler chickens from 1 to 21 days old to the assessed level of 10%, provided that carbohydrase is added.

scholarly journals Carcass characteristics of broilers fed enzyme complex

2015 ◽  
Vol 31 (2) ◽  
pp. 153-162 ◽  
Author(s):  
F.S. Dalólio ◽  
D.P. Vaz ◽  
J. Moreira ◽  
L.F.T. Albino ◽  
L.R. Valadares
Keyword(s):  
Meat Quality ◽  
Soybean Meal ◽  
Broiler Chickens ◽  
Broiler Chicks ◽  
Enzyme Complex ◽  
Carcass Yield ◽  
Randomized Design ◽  
Enzyme Supplementation ◽  
Water Holding

Enzyme supplementation in diets based on corn and soybean meal can improve the productive performance of broilers. Thus, we aimed to evaluate the effect of the inclusion of different levels of an enzyme complex consisting of phytase, protease, xylanase, ?-glucanase, cellulase, amylase, and pectinase, for diets based on corn and soybean meal, on the parameters of carcass yield and meat quality of broilers. Six hundred broiler chicks were used, and the animals were females with one day of age, from the Cobb 500 strain, and distributed in a completely randomized design, with five levels of inclusion of the enzyme complex (0, 100, 200, 300 and 400), and six repetitions, with twenty animals each. The carcass yield and meat quality were evaluated at 35 and 42 days of age. We evaluated the characteristics of weight loss by cooking (WLC), shear force (SF), water holding capacity (WHC), pH, lightness (L*) and color (a* and b*). The parameters of performance, carcass yield and carcass parts, and meat quality were not affected by the enzyme supplementation of diets fed to broiler chickens (P >0.05), except for the performance characteristics of the breast and the wings at 42 days of age (P < 0.05).

scholarly journals Effects of natural antioxidant extract supplementation on the growth performance and meat quality of broiler chickens

2020 ◽  
Vol 65 (4) ◽  
pp. 405-417
Author(s):  
Hakeem Ishola ◽  
Elisha Jiya ◽  
John Adama ◽  
Olushola Alabi
Keyword(s):  
Weight Gain ◽  
Meat Quality ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Antioxidant Supplementation ◽  
Significance Level ◽  
Peel Extract

The study examined the effect of dietary antioxidant supplementation on the performance and meat quality of broiler chickens. Namely, 300 one-day-old Arbor Acres broiler chicks were fed a starter diet from 1 to 4 weeks and a finisher diet for the last 4 weeks. Birds were randomly assigned to treatments based on antioxidant supplementation in drinking water at 0.02% butylated hydroxyanisole (BHA), ordinary water (OW), 0.02% sweet orange peel extract (SOPE), 0.02% shaddock peel extract (SHPE) and 0.02% lemon peel extract (LMPE) per litre of water in a completely randomized design experiment. Feed intake and body weight gain were recorded on a weekly basis. Three birds were selected in each treatment and slaughtered for meat quality determination. BHA and LMPE treatments had the best weight gain and feed conversion efficiency at the significance level (p<0.05). There were significant differences (p<0.05) in the shear force (force peak and yield) in the dietary antioxidants fed to the birds. Sensory parameters (taste, aroma and overall acceptability) show significant differences (p<0.05) amongst the treatments. However, there were no significant differences (p>0.05) in appearance and texture perception amongst treatments. Finally, significant differences (p<0.05) in the lightness (L*) and redness (a*) of the meat samples were observed amongst the treatments. There were no significant differences (p>0.05) in the yellowness (b*) amongst the treatments. It can be concluded that broiler birds fed SOPE, SHPE and LMPE treatments performed better and that these treatments enhanced the meat quality of the birds when compared to BHA and OW treatments.

scholarly journals Impact of dried brewers’ grains supplementation on performance, metabolism and meat quality of broiler chickens

2020 ◽  
Vol 50 (2) ◽  
pp. 186-195
Author(s):  
W. Parpinelli ◽  
P.S. Cella ◽  
C. Eyng ◽  
J. Broch ◽  
V.D.L. Savaris ◽  
...  
Keyword(s):  
Meat Quality ◽  
Deposition Rate ◽  
Broiler Chickens ◽  
Blood Parameters ◽  
Fat Deposition ◽  
Intestinal Morphology ◽  
Experimental Unit ◽  
Feed Conversion ◽  
Carcass Yield ◽  
Quadratic Effect

The objective was to evaluate increasing levels of dried brewers’ grains (DBG) in feed for broiler chickens from 1 to 21 days old and their effect on performance, blood parameters, intestinal morphometry, carcass characteristics and meat quality. The design was completely randomized with six treatments, which consisted of various levels of DBG inclusion, namely 0 (no inclusion), 20, 40, 60, 80, and 100 g/kg with seven replications and 17 animals per experimental unit, totalling 714 male broilers. Performance parameters, blood biochemical profile, morphology of the intestinal epithelium (duodenum), and carcass yield and composition were evaluated. Feed intake was not changed by DBG inclusion levels. Nor were weight gain and feed conversion ratio. Serum cholesterol levels were not influenced, and there were no effects on triglyceride, uric acid and creatinine levels. Enzyme aspartate aminotransferase showed a quadratic effect, as did alanine aminotransferase, with higher values at 79.5 and 63.9 g/kg DBG inclusion, respectively. No changes in carcass yield and relative organ weight were observed. The composition of the carcass in ether extract showed a quadratic effect, as fat deposition rate, with lowest values at 62.8 and 62.4 g/kg of DBG inclusion levels, respectively. Crude protein levels in carcass reduced linearly, as did fat deposition rate. The parameters of intestinal morphology and meat quality were not changed. Dried brewers’ grains can be included in broiler diet from 1 to 21 days at levels up to 100 g/kg without influencing the metabolic parameters and broiler performance. Keywords: alternative feed, blood, by-product, intestinal villi, performance

scholarly journals Effect of Fresh Citrus Pulp Supplementation on Animal Performance and Meat Quality of Feedlot Steers

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3338
Author(s):  
Santiago Luzardo ◽  
Georgget Banchero ◽  
Virginia Ferrari ◽  
Facundo Ibáñez ◽  
Gonzalo Roig ◽  
...  
Keyword(s):  
Meat Quality ◽  
Block Design ◽  
Average Daily Gain ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Animal Performance ◽  
Feed Conversion ◽  
Feedlot Steers ◽  
Citrus Pulp

The use of fruit by-products such as citrus pulp represents a feeding ingredient that deserves to be evaluated as an energy source in animal rations. Thirty-six British breed steers were allotted to one of the three feeding treatments (12 steers/treatment): 0%, 15% and 30% of fresh citrus pulp inclusion in the ration in a randomized complete block design to evaluate animal performance and carcass and meat quality traits. In the present study, the inclusion of fresh citrus pulp up to 30% of the diet did not affect the animal average daily gain (p > 0.05) but steers that were fed the pulp consumed less feed (p < 0.05) and presented a lower feed conversion ratio (p < 0.05) than their counterparts without citrus pulp in their diet. No effect of fresh citrus pulp was observed on carcass and meat quality (p > 0.05). A greater lipophilic antioxidant capacity (p < 0.05) in meat was observed when fresh citrus pulp was offered at 15% of the diet. Fresh citrus pulp used up to 30% as a feed ingredient in feedlot rations does not negatively affect animal performance or meat quality but, rather, has a positive effect on dry matter intake and a better feed conversion ratio.

scholarly journals Visceral composition, carcass yield and meat quality parameters of free-range broilers with diets containing different levels of crushed sugarcane

2020 ◽  
Vol 21 ◽  
Author(s):  
Viviane Assunção de RESENDE ◽  
Alexandre de Oliveira TEIXEIRA ◽  
Leonardo Marmo MOREIRA ◽  
Anderson CORASSA ◽  
Christiano Vieira PIRES ◽  
...  
Keyword(s):  
Meat Quality ◽  
Relative Weight ◽  
Abdominal Fat ◽  
Fat Content ◽  
Heart Weight ◽  
Breast Meat ◽  
Carcass Yield ◽  
Quadratic Effect ◽  
Free Range

ABSTRACT The aim of this study was to evaluate the visceral composition, cuts, and meat quality of two strains of free-range chickens fed diets containing crushed sugar cane. 448 chickens were distributed at 35 days of age, in two randomized blocks design, in 4x2 factorial, with four levels of replacement in the feed (0; 15; 30 and 45%) by sugarcane and two strains (Pesadão and Label Rouge), in two repetitions per block of fourteen birds per experimental unit. In 30 minutes after slaughter, the parameter a* was higher for animals of the Pesadão strain relation to the Label Rouge lineage. A quadratic effect was observed with increasing levels of sugarcane on the L* parameter of breast meat; and linear effect on parameter b* of the breast skin. Within 24 hours after slaughter, a quadratic effect of sugarcane levels was observed on the b* parameter of the breast meat. The increase in sugarcane levels linearly reduced the weight of heart, liver, chest, thigh plus drumstick, wing, carcass yield and relative heart weight of the animals. A quadratic effect was observed with increase in sugarcane levels over the relative weight of abdominal fat, the lowest fat content was observed in animals that consumed up to 30% of sugarcane in the feed. The use of sugarcane as an alternative feedstuff in up to 45% in the diet maintains the quality of meat and reduces the abdominal fat content, however, decreases the carcass yield.

scholarly journals  Growth performance, carcass traits and meat quality of bulls and heifers slaughtered at different ages

2012 ◽  
Vol 57 (No. 1) ◽  
pp. 34-43 ◽  
Author(s):  
D. Bureš ◽  
L. Bartoň
Keyword(s):  
Meat Quality ◽  
Dry Matter ◽  
Conversion Ratio ◽  
Carcass Composition ◽  
Feed Conversion ◽  
Sensory Panel ◽  
Longissimus Lumborum ◽  
Slaughter Age ◽  
Total Meat

The effects of sex and slaughter age on growth, feed intake, carcass composition and meat quality attributes of musculus longissimus lumborum were investigated in Charolais &times; Simmental bulls (n = 12) and heifers (n = 12) reared and finished under identical management conditions. The animals entered the experiment at similar age (251 days) and were slaughtered at 14 or 18 months of age. Bulls gained more rapidly (P &nbsp;&lt; 0.001), consumed more dry matter daily (P &lt; 0.05), and had a higher killing-out proportion (P&nbsp;&lt;&nbsp;0.05). The sex &times; slaughter age interaction was significant (P &lt; 0.01) for feed conversion ratio, which deteriorated markedly more in heifers than in bulls as slaughter age increased. Bulls produced leaner carcasses with a higher proportion of total meat (P &lt; 0.001). While bulls contributed to high-priced meat by a higher proportion of meat from the shoulder (P &lt; 0.01), heifers had higher proportions of meat from the rump and loin (P&nbsp;&lt; 0.05). Older animals were generally fatter and their carcasses contained lower proportions of high-priced meat (P&nbsp;&lt; 0.01) and bones (P &lt; 0.05). Bulls exhibited lower contents of dry matter (P &lt;&nbsp;0.001), protein (P &lt; 0.05) and intramuscular fat (P &lt; 0.001), and a higher content of collagen (P &lt; 0.001) in musculus longissimus lumborum than hei-fers. The meat from heifers was assessed by the sensory panel as more tender and, when aged for 11&nbsp;days, more acceptable than the meat from bulls. Older animals obtained higher scores for beef flavour intensity (P &lt; 0.01), tenderness (P &lt; 0.001), juiciness (P &lt; 0.05), and overall acceptance (P &lt; 0.001). &nbsp;

Sign in / Sign up

Export Citation Format

Share Document