Proximate Composition Of Meat Research Articles

Xylanase supplementation in energy-deficient corn-based diets: impact on broiler growth, nutrient digestibility, chyme viscosity and carcass proximates.

The goal of the current study was to investigate the impact of various concentrations of xylanase in energy-deficient corn-based diets on the growth performance, carcass characteristics, nutrient digestibility, and digesta viscosity in broilers from 7 to 35 days of age. A total of 280 seven-day-old Ross 308 broilers were randomly allocated to one of the five dietary treatments following a completely randomized design with 8 replicates and 7 birds per cage. The treatments were: i) positive control (PC, without xylanase); ii) NC-1 (80 kcal/kg ME reduced from PC); iii) NC-2 (100 kcal/kg ME reduced from PC); iv) NCX-1 (NC-1 + 2,000 U/kg xylanase); and v) NCX-2 (NC-2 + 3,000 U/kg xylanase). Body weight, weight gain, feed intake, and feed conversion ratio were determined weekly to evaluate growth performance. One bird per pen was sacrificed for ileal digesta collection to determine the viscosity and digestibility of energy, dry matter, crude protein on days 24 and 35, however breast and leg meat samples were obtained for proximate analysis (moisture, crude protein, fat, and ash) on day 35. Birds fed diets supplemented with xylanase regardless of the amount had higher (p<0.05) body weights, daily gains, and improved feed efficiency compared to NC diets all throughout the experimental period. Feed intake was not affected (p>0.05) by the addition of xylanase. Moreover, lowered (p<0.05) viscosity of the ileal digesta were observed upon xylanase inclusion in the diets compared to the birds fed NC diets on day 24. Ileal nutrient digestibility and meat proximate composition were not affected (p>0.05) by xylanase. The present study indicated that the xylanase at 2,000 U/kg and 3,000 U/kg levels compensates for the 80 kcal/kg and 100 kcal/kg dietary energy levels, respectively, without having adverse effects on the growth performance, carcass characteristics, nutrient digestibility, and digesta viscosity of broilers.

Effect of omega fatty acid‐rich oil blend supplementation on the growth, carcass, meat quality, and gene expression of Barbari goats

AbstractThis study investigated the effect of supplementing omega fatty acids‐rich oil blend, composed of sunflower oil (1.5% and 3.0%), linseed oil (1.5% and 3.0%), and FineXNV1810 (20 g) on the carcass, meat quality, fatty acid profile, and genes (peroxisome proliferator‐activated receptor‐α, stearoyl‐CoA desaturase, acetyl‐CoA carboxylase, hydroxy‐3‐methylglutaryl coenzyme A, and leptin) of Barbari goats. The goat kids (n = 18) were divided into three groups, namely, group A: basal diet; group B: basal diet + oil blend level 1; and group C: basal diet + oil blend level 2, and subjected to the feeding trial for 120 days followed by slaughter and meat quality studies. No treatment effect was recorded in carcass characteristics, pH, water holding capacity, and proximate composition of meat. However, a significant (p &lt; 0.05) treatment effect was observed in cooking loss, lightness, yellowness, and shear force values of meat. There were significant differences (p &lt; 0.05) in linoleic acid, α‐linolenic acids, conjugated linoleic acid (CLA), polyunsaturated fatty acids (PUFA), n − 3 and n − 6 PUFA, PUFA/saturated fatty acids and n − 6/n − 3 ratios, and thrombogenic index among groups. An upregulation of the studied genes in the supplemented groups was observed. There were upregulations in the studied genes in the supplemented groups.Practical applications: Goat meat is in great demand the world over, especially in tropical countries, including India, and does not carry any social or religious prohibition. Although goat meat has relatively less fat, consumers express their concern over the presence of undesirable fatty acids. The present study shows that the fatty acid configuration of goat meat can be improved by a dietary supplementation of an oil blend rich in omega fatty acids. The amount of n − 3 PUFA, n − 6 PUFA, and CLA in goat meat was significantly increased due to the dietary oil blend making it healthy for the consumers. Moreover, the dietary oil blend at the studied levels did not significantly affect the growth and meat quality parameters of the goats. Thus, the studied approach can be successfully followed to produce healthier goat meat.

Effect of Cotton Gin Trash Supplementation as Unconventional Feedstuff on Feed Intake and Production Characteristics of Mecheri Sheep of India

This study investigated the effects of feeding cotton gin trash (CGT) to Mecheri ram lambs, as an alternate diet, on growth performance, carcass characteristics, and meat quality. A growth performance trial was conducted with thirty-two weaned Mecheri ram lambs with an average body weight of 12.64 ± 0.74 kg, which were assigned to four groups (n = eight animals in each group). The diet’s roughage part was replaced by CGT at percentages of 0% (T1), 25% (T2), 50% (T3), and 75% (T4). The growth trial lasted six months (180 days) from weaning lambs at 3–4 months until 9 months for marketing. All the animals were fed on a dry matter requirement basis at 4% of their body weight. The study revealed that the lambs fed with 50 (T3) and 75 (T4) % inclusion levels of CGT showed significantly (p &lt; 0.01) higher total body weight gain than the T1 and T2 groups. The average daily gain of lambs in T3 (99.24 g) and T4 (105.51 g) were significantly (p &lt; 0.01) higher than T1 (80.77 g) and T2 (83.61 g) groups. Throughout the study period, there was no statistically significant (p &gt; 0.05) difference in the average Dry Matter Intake (DMI) (g) between the groups; however, the lambs in T4 demonstrated higher feed efficiency (7.4) than the T1 (9.3) group. The slaughter studies revealed that the lambs in the T4 followed by the T3 groups registered significantly (p &lt; 0.01) higher hot carcass weight, dressing percentage, and meat: bone ratio than T2 and T1 group animals. The T3 and T4 groups had significantly (p &lt; 0.05) higher weights of the liver, spleen, head, stomach, and empty intestines when compared to T1 and T2 groups; however, there was no significant (p &gt; 0.05) difference in the weights of edible and inedible offals. In addition, there were no significant variations (p &gt; 0.05) in pH, WHC, shear force value, sensory characteristics, and proximate composition of meat among treatment groups. The SFA levels in the T3, T4, and T2 groups were substantially (p &lt; 0.01) greater than in the control group (T1). In contrast, the proportion of MUFA in the T1 group was significantly (p &lt; 0.05) greater than in the T3 and T4 treatment groups. There was no significant difference in PUFA or the PUFA/SFA ratio between the treatment groups. In accordance with current research findings, the CGT can be added up to 75% of the roughage component in sheep feed as an effective unconventional supplementation, as it improves body weight, feed efficiency, and carcass characteristics in Mecheri ram lambs.

Correlation between mineral profile, physical-chemical characteristics, and proximate composition of meat from Santa Ines ewes under water restriction

This study aimed to evaluate the correlations between mineral profile, physical and chemical characteristics, and proximate composition of ewe meat receiving different water supply levels (100% - ad libitum group; 80%; 60% and 40% ad libitum group). Thirty-two Santa Ines ewes were assigned to a randomized block design, with 4 treatments, and 8 replications, during the 63-day experimental period. Significant correlations between all minerals (P&lt;0.05) were found in the 60% and 40% water supply levels. A correlation (P&lt;0.05) was observed for minerals P, K, Ca, Mg, S, Cu, and Fe with crude protein at 100% water supply. Negative correlations (P&lt;0.05) between N, P, K, Ca, Mg, S, Cu, Fe, and Zn were detected in the meat of animals supplied with 60% water. Principal component analysis (PCA) of macrominerals explained 82.9% data variance. Zinc had a strong contribution to PC1. Cooking losses had a similar contribution to PC1 and PC2. PC1 and PC2 explained 66.7% data variance in chemical characteristics. The decrease in water supply causes the correlation of nitrogen with the other minerals in meat, in addition to altering the correlation between the physical and chemical profile of the meat.

Effect of Krill Oil Supplementation and Stocking Density on Growth Performance, Proximate Composition, and Organo-somatic Indices of Cyprinus carpio

This study was conducted to investigate the effects of krill oil supplementation on growth performance, proximate composition and organo-somatic indices of Cyprinus carpio, reared in a recirculating aquaculture system, at different stocking densities. Four experimental diets were formulated: LD - low density (15 fish/rearing unit- 3.5 kg/m3), where fish were fed with commercial feed, HD - high density (35 fish/rearing unit-8 kg/m3 fed with commercial feed), LD-KO - low density, where fish were fed with commercial feed supplemented with 5 g/kg feed krill oil, and HD-KO- high density, were fish were fed with commercial feed supplemented with 5 g/kg feed krill oil. After 60-days of rearing, final fish weight and individual weight gain was significantly higher (P˂0.05) in fish stocked in lower density, with better values in LD-KO groups. Also, the best values of FCR, SGR and PER were obtained in LD-KO groups. Regarding the proximate composition of meat, no significant differences (P˃0.05) were registered between the experimental variants. The organo-somatic indices revealed no significant differences (P˃0.05) in the cardiosomatic index, while hepatosomatic, splenosomatic, and visceral index differed significantly (P˂0.05) between the experimental variants. Accordingly, we can conclude that supplementation of carp diet with 5 g/kg feed krill oil can improve growth performance, without any modification at proximate composition of meat.

Performance of three strains of broiler chickens fed with straight diet

One hundred and twenty (120) day-old broiler chickens of three different strains fed with straight diet were used in this study which lasted for 49 days. A single straight diet containing 2844.25kcal/kg of M.E and crude protein of 21.04% was formulated for the study. Each strain of the broiler namely Cobb, Ross and Abor acre formed the three treatments of 40 birds per treatment which were replicated four times with 10 birds per replicate using Completely Randomized Design. The data collected were subjected to ANOVA, where means were different, Duncan Multiple Range Test was used to separate the means. The result of the final weight, weight gained, average daily weight gained, total feed intake, average daily feed intake, live weight and dressed weight had the same level of significances where Cobb and Ross were not significantly (P&gt;0.05) different from each other but they were significantly (P&lt;0.05) higher than Arbor acre. The organ yield showed no significant difference (P&gt;0.05) across the treatments. The proximate composition of meat did not show any particular pattern. Cobb strain of broiler had the best gross margin (₦2345.16) though not significantly (P&lt;0.0.5) different from Ross (₦2326.66). From the fore going, it can be concluded and recommended that Cobb and Ross strains of broiler are best raised for performance traits and maximum gain for farmers feeding straight diet.

Physico-chemical parameters and sensory attributes of different chicken meat of consumer’s choice from poultry market

Generally, consumers prefer the indigenous chicken meat compare to commercial chicken like sonali or broiler chicken because of their concept of having more nutritious and palatability and ready to pay more. Whether the concept is true or not, and on which aspects, indigenous chicken meat is superior compare to that of commercially reared chicken, validation is required. Therefore, an experiment was conducted to compare the carcass characteristics, meat proximate composition, physico-chemical parameters and sensory attributes of indigenous/deshi, sonali and broiler chicken that are available in the poultry market of Bangladesh. Three types of finisher chicken: indigenous/deshi, sonali and broiler chicken were bought from local market of Bangladesh. Birds were slaughtered following halal method; carcass traits and meat quality parameters were analyzed after collection and processing of meat samples. Result indicated that, there is a variation in the carcass characteristics, proximate composition, physico-chemical attributes and sensory evaluation. Broiler chicken live weight, slaughter weight and abdominal fat was higher as compared to sonali and indigenous/deshi chicken (P&lt;0.05). The dry matter, crude protein and ether extract was higher in deshi chicken followed by sonali and broiler chicken (P&lt;0.05). Drip loss and cooking loss was higher in broiler chicken followed by sonali and deshi chicken, while pH24 was lower in deshi chicken followed by sonali and broiler chicken (P&lt;0.05). Broiler chicken meat was more tender in relation to sonali and deshi chicken (P&lt;0.05), where flavor of deshi chicken meat was higher as compared to the broiler chicken (P&lt;0.05). Result suggested that, based on level of status of people, consumers can choose indigenous or deshi chicken due to better proximate composition and meat flavour; however, sonali and broiler chicken are also acceptable by the consumers with higher carcass weight and meat tenderness with short interval to become marketable weight and cheap price which can be afford by all class of people to meet their protein demand, eventually can secure national human health.

"Carcass Quality and Proximate Composition of Meat of Indigenous Sheep of Assam Raised on Different Rearing Systems"

"Carcass Quality and Proximate Composition of Meat of Indigenous Sheep of Assam Raised on Different Rearing Systems"

Effects of dietary paddy rice on growth performance, carcass traits, bare skin color, and nutrient digestibility in geese

The aim of this study was to investigate the effects of dietary paddy rice on growth performance, carcass traits, bare skin color, and nutrient digestibility in geese. A total of 300 twenty-eight-day-old male goslings were randomly divided into 5 treatment groups with 6 pens containing 10 goslings each. The geese were raised for 42 d on feed with 0% (control), 13, 26, 39, or 52% dietary paddy rice inclusion. Body weight and feed intake per pen were recorded from the arrival of goslings to the end of the trial. On d 70, two goslings were selected from each pen, one of which was used to measure slaughter performance, meat quality, meat proximate composition, and bare skin color, and one was used to determine nutrient utilization. The results showed that goslings fed a diet containing 26, 39, and 52% paddy rice had a higher final body weight, average daily feed intake, and average daily gain than those in the control group (P < 0.05). The abdominal fat yield in dietary paddy rice groups was higher than that of the control group (P < 0.05). There were no effects on the moisture, protein, and fat contents of breast and thigh muscle among the five treatments (P > 0.05). Compared to the control group, the breast muscle of geese fed the paddy rice had a lower L* value and a higher a* value (P < 0.05). Dietary paddy rice decreased the bill score of geese (P < 0.05). Geese in the paddy rice groups exhibited higher total starch digestibility than geese in the control group (P < 0.05). The digestibility of energy, crude protein, crude fat, crude fiber, NDF, and ADF did not differ between groups (P > 0.05). In conclusion, paddy rice is an excellent energy source in geese diets and could improve the growth performance, breast muscle color, and utilization of total starch but increase the abdominal fat yield and decrease the bill color of geese.

Impact of Romanov breed lamb gender on carcass traits and meat quality parameters including biogenic amines and malondialdehyde changes during storage.

The present study aims to evaluate the effect of Romanov breed lamb gender on carcass traits and meat quality parameters, as well as on the formation of biogenic amines (BAs) and malondialdehyde during meat storage. Obtained results revealed that lamb gender had a significant influence on sternum/breastbone, ribs, right shoulder, and bones of the back leg. Significantly higher lightness (by 3%) was found for male meat; however, higher redness of female meat was observed (by 7.7%). In all cases, a lower pH was obtained for female meat. Significantly higher cooking loss (by 38%) was found for male meat. However, gender was not a significant factor in lamb meat proximate composition, or for BAs and cholesterol content. The gender of animals had a significant influence on 10‐heptadecenoic (C17:1), linoleic (C18:2n – 6), total polyunsaturated FA, and total trans isomers content in meat. A significantly higher concentration of malondialdehyde was found in female lamb meat (by 43.4% and 56.8% in fresh and after 3 months of storage at −18°C, respectively) compared to males. Finally, the obtained results supplement the scarce database about the characteristics of Romanov breed meat of different gender and this is beneficial for lamb breeders and meat industry in order to obtain a better quality production.

Carcass characteristics and some physical quality parameters of meat in male Japanese quails fed by different levels of vitamin E, sesamine and thymoquinone supplemented diets

A fully randomized experimental design, with three hundred and fifty-one days-old Japanese quails located into the seven treatment groups with five replicates and ten quail each were used in the current study. The treatments whereas the basal diet basis corn and soybean meal and (100 and 200 and) of vitamin E, sesamine and thymoquinone. At the end of the study (35 days old) two quails from each pen were selected, weighted, and slaughtered. The carcass percentage was calculated and was eviscerated, thigh, breast and abdominal fat area were removed and the weights of the mentioned organs were measured as a percentage of the organ to the total body weight. The physical analysis of the quail’s meat quality was done by using two quails randomly picked from each treatment to study some qualities of their meat using the color, pH, water-holding capacity (WHC), drip loss and cooking loss parameters. Additionally, thiobarbituric acid (TBA) levels in the thigh and breast meat were measured. Data relieved from the current study showed that there were significant differences according to the thigh and breast weight and abdominal fat percentage between treatments (p≤0.05). The crude protein of tight and breast meat was increase and the ether extract content were decreased instead. Vitamin E, sesamine and thymoquinone supplemented groups were characterized by statistically higher pH values compared to the control group (p≤0.05). The significant differences across treatments in term of water holding capacity were evaluated (p≤0.05). WHC increases and drip loss and cooking loss decreased across the treatments compared to the control group. There was significant decrease for TBA value in quail’s thigh and breast meat which fed by sesame and black seed oil supplemented diets (p≤0.05). In terms of the L*b*a values of the thigh and breast meat in the cold carcass, there were significant differences between the treatments (p≤0.05). In conclusion result of current study vitamin E, sesamine and thymoquinone supplemtation have some beneficial acts in live carcass weight, warm and cold carcass percentage, thigh and breast meat proximate composition, and have no deleterious effect on meat cooking loss, drip loss, color and pH values and lead to better meat quality.

Carcass traits, blood parameters and meat composition of quail and pigeon available in Bangladesh

Common poultry birds like chicken, duck, quail and pigeon meat is gaining interest due to their genetic potentiality and management factors as well as special characters of their meat and egg. With a view to considers consumers demand, promising alternative bird farming and meat quality research, an attempt was undertaken to conduct a preliminary study to compare carcass characteristics, blood parameter, intestinal microbiology and meat composition of quail and pigeon of Bangladesh. The result revealed that, carcass traits, hematological parameters and intestinal microbiology did differ between quail and pigeon (P&lt;0.05). The meat proximate composition data indicated that moisture and ether extract content did differ (P&lt;0.05), however, crude protein and ash content did not differ between quail and pigeon (P&gt;0.05). Thus, the preliminary study suggested that farmers can easily rear quail and pigeon for consumption of meat, however, further detail study can ensure detail physiological aspects and meat quality parameters of quail and pigeon.

Effects of Microbial Fermented Feed on Serum Biochemical Profile, Carcass Traits, Meat Amino Acid and Fatty Acid Profile, and Gut Microbiome Composition of Finishing Pigs.

Microbial fermented feed is an important part of feed industry, while little research has focused on the solid-state fermentation of complete feed. Herein, the purpose of the present study was to investigate the effects of fermented complete feed (FCF) on the growth performance, biochemical profile, carcass traits, meat proximate composition, meat amino acid and fatty acid profile, and gut microbiome composition of finishing pigs, thereby providing references for the application of FCF in animal production. Twenty Duroc × Landrace × Yorkshire pigs with an average body weight (BW) of 48.74 ± 1.49 kg were divided randomly into control group (pigs received a basal diet, CN, n = 10) and FCF group (pigs fed with FCF, n = 10). The experiment lasted for 60 days. FCF improved the growth performance, which was indicated by a significantly increased final BW, average daily gain and average daily feed intake, and a significantly decreased feed-to-gain ratio. FCF improved biochemical profile, which was indicated by a higher alkaline phosphatase, glucose, immunoglobulin G, immunoglobulin M, superoxide dismutase, and total antioxidant capacity content. Pigs that received FCF had better carcass traits and meat quality than did pigs that received basal diet, which was indicated by a higher carcass length, crude protein content, lysine content, Glu content, C18:ln9c, C18:2n6c, C20:4n6, and unsaturated fatty acid content and a lower average back-fat thickness, C18:0, and saturated fatty acids. FCF significantly reduced the relative abundances of presumably pathogenic bacteria of phylum Proteobacteria and genus Escherichia–Shigella and enhanced the relative abundances of likely beneficial bacteria of phylum Firmicutes and genus Clostridium. In summary, FCF had a certain effect on the improvement of growth performance, serum biochemical profile, carcass traits, meat proximate composition, amino acid and fatty acid profile, and gut microbiome composition of finishing pigs.

Effect of Inulin Source and a Probiotic Supplement in Pig Diets on Carcass Traits, Meat Quality and Fatty Acid Composition in Finishing Pigs.

Simple SummaryFructooligosaccharides, including inulin, are prebiotics involved in the regulation of bacterial flora, intestinal health, and metabolism in animals. Oligosaccharides and inulin-containing plants are the subject of numerous studies around the world. Inulin is an important oligosaccharide, considered a prebiotic in the diet of humans and animals. In this study, we examined the effect of the supplementation of probiotic bacteria in the diet with inulin or dried Jerusalem artichoke tubers on the performance, pig meat quality, and fatty acid profile of meat and backfat, which provided novel information on the use of these additives in livestock production. An improvement in the antioxidant status of meat and in the water-holding capacity, as well as a reduction in the shear force after the addition of both prebiotics can be mentioned as the pertinent results. However, the meat sensory traits were unchanged by supplementation with the prebiotics and probiotics. This study forms part of the current global work on feed additives that support animals’ health and concurrently allow the use of antibiotic treatments to be limited. Therefore, the results of this experiment are of great practical importance and can be proposed for use in pig farming as part of the intensive work which is underway across the EU to reduce the use of antibiotics. In addition, meat with higher quality and a longer shelf life derived from pigs fed with feed containing additives of natural origin are sought by consumers who value healthy and safe food.In this experiment, we investigated the effect of the supplementation of probiotic bacteria in the diet with inulin or dried Jerusalem artichoke tubers on the performance, meat quality, and fatty acid composition in the meat and backfat of fatteners. One hundred and forty-four crossbred pigs (PIC × Penarlan P76) were divided into six groups and fattened from 30 to 114 kg. The meat proximate composition, pH, color, texture, shear force, water-holding capacity, sensory attributes, and thiobarbituric-acid-reactive substances were measured. Normal post-mortem meat glycolysis was demonstrated and no meat defects were present. The chemical constituents in muscle tissues were similar, except for intramuscular fat (IMF). The addition of the prebiotics resulted in a higher IMF level, whereas a significantly lower content was found after the probiotic supplementation. Meat from both prebiotic groups was lighter, less red, and more yellow and showed a higher hue angle. The addition of both prebiotics significantly improved the antioxidant status of meat (by approximately 16% and 18%) and the water-holding capacity (less free water and higher M/T ratios), but reduced shear force (by 17%, p ≤ 0.05) and hardness (by 39% and 35%, respectively, p ≤ 0.05). The addition of the prebiotics and probiotics had no effect on any of the evaluated sensory attributes.

Effect of Rosemary (Rosmarinus officinalis) Extract on the Antioxidant Status and Proximate Composition of Prawn (Macrobrachium rosenbergii) Meat

ABSTRACT Considering the potential of rosemary as a metabolic modulator, the use of this plant as a supplement in the diet of freshwater prawns can contribute to improving the physiological and metabolic conditions of prawns. This study aimed to evaluate the effects of rosemary extract supplementation on the physiology and body composition of Macrobrachium rosenbergii prawn. Four formulations were made containing 0%, 2%, 5%, and 15% of rosemary extract; the prawns received supplemented diet for 90 days. The zootechnical parameters, the antioxidant status, aspartate aminotransferase (AST) and alanine aminotransferase (ALT), glutathione reductase (GR), glutathione S-transferase (GST) activities, reduced glutathione (GSH) levels and thiobarbituric acid reactive substances (TBARS), and the proximate composition of meat were evaluated. Reduced glutathione levels and increased GR and GST activities were observed for all rosemary extract concentrations studied. In addition, the supplementation with 15% of rosemary extract significantly increased the lipid peroxidation in prawn liver. Regarding the proximate composition of meat, the rosemary extract led to significant reductions in lipid content without affecting the other parameters. The addition of rosemary extract had a pro-oxidant potential and dose-dependent effect, leading to significant physiological changes reflected in the composition of prawn meat.

Rabbit as sustainable meat source: carcass traits and technological quality of meat and of mechanically deboned meat

This study aimed to characterize rabbit carcass traits, meat quality, and mechanically deboned meat (MDRM) from New Zealand × Botucatu crossbred rabbits to determine the potential use by the meat industry. Average yields of the carcass (52.46%) and retail hind leg (33.88%), foreleg (15.51%), loin (11.63%), and back (39.83%) cuts were assessed, with total meat-to-bone ratio of 1.65. The meat proximate composition and technological characteristics pH, water retention capacity, and total collagen were similar to meat of commonly market species. Rabbit meat color was light (L* = 65.93) and with a low shade of red (C * = 19.24 and h = 52.79 °) due to the low content of heme pigments (19.89 µg acid hematin/g). The obtained MDRM met the levels of protein and fat required by Brazilian legislation, but a high calcium content (1.45% dry basis). It can be concluded that rabbits represent a viable unconventional meat resource with high potential for use in processing. In addition to raw meat, MDRM can also be obtained to be used as a meat ingredient in industrial products.

Chitosan and cottonseed processing method association on carcass traits and meat quality of feedlot lambs.

The objective of this study was to evaluate the effects of the association of cottonseed processing method with chitosan on carcass traits and meat quality of lambs finished in feedlot. Eighty lambs with an average body weight of 20.6 kg, with 04 months of age, were distributed in a completely randomized design, in a 2 x 2 factorial arrangement. The factors were represented by two cottonseed processing method (whole or ground) and two levels of chitosan (0 and 136 mg/kg BW). The association of cottonseed processing method with chitosan in the lamb diet did not affect (P>0.05) carcasses traits. The pH, color, cooking losses, shear force, and proximate composition of meat were also not affected (P>0.05) by the processing method of cottonseed or its association with chitosan in the lamb diets. There was an increase in palmitoleic (c9-C16:1; P = 0.01) and conjugated linoleic (P = 0.02) fatty acids when ground cottonseed was associated with chitosan. Ground cottonseed associated with chitosan increases the concentration of unsaturated fatty acids in the meat of feedlot lambs.

Crecimiento, características de carcasa, peso de órganos internos y composición proximal de carne de seis genotipos de pollos criados en la región Andina del norte peruano

This study examined the growth, carcass characteristics, weight of internal organs, meat quality and meat proximate composition in six genotypes of chickens reared in Andean region of northern Peruvian, with intensive system, using 600 chickens one-day-old, divided in to six equally sized groups. The comparison included two Creole chicken breeds from Peru, improved and pure, and four imported chicken strains (Hubbard Red, Hubbard White, Native French, and Babcock). The animals were fed without restriction and slaughtered 13 weeks of age. Chickens of the imported strains, especially Hubbard chickens were heavier at slaughter than creoles breeds. Proportions of cuts: thigh, drumstick and head were similar among genotypes, carcass yield, breast meat and abdominal fat were lowest in the Creole breed and Native French. There were no statistical differences (p &gt; 0.05) for meat pH, drip loss, and cooking loss in response to genotype. The breast meat of the two Creole breeds had lower contents of fat compared with that of the Hubbard strains.

Effects of replacing soybean meal with perilla seed meal on growth performance, and meat quality of broilers

The purpose of this study was to evaluate effects of replacing soybean meal with perilla seed meal (PSM) on growth performance, proximate composition of meat, meat quality, and fatty acids composition of meat in broilers. A total of 60 one-day-old chicks of ROSS 308 (initial body weight of 44.8 ± 0.4 g) were randomly allotted to four treatment groups (15 replicate cages with 1 broilers per cage) in a period of 5 weeks. Dietary treatments included control (CON) basal diet (corn-soybean meal-based diets) and test diets in which PSM was included at 0.5% (T1), 1% (T2), or 2% (T3) to gradually replace soybean meal. At the end of experiment, all broilers were slaughtered for collecting breast and thigh meat. At 5 weeks, T2 and T3 treatment groups had higher (p < 0.05) body weights than CON and T1 treatment groups. Weight gain was increased (p < 0.05) in T2 and T3 treatment groups. Feed intake was decreased (p < 0.05) in T3 treatment group. Broilers in T2 treatment group had lower (p < 0.05) feed conversion ratio than those in other treatment groups. In proximate composition of breast meat, there was no significant (p > 0.05) difference in moisture and ash. Fat composition of breast meat was significantly (p < 0.05) increased in T2 and T3 treatment groups. Regarding meat quality, broilers fed T3 diet had higher (p < 0.05) water holding capacity than those fed other diets. Regarding fatty acids composition of thigh meat, broilers fed T3 diet had higher (p < 0.05) linolenic acid than those fed other diets. In conclusion, soybean meal replaced by 2% perilla seed meal in broiler diet can improve growth performance, meat quality, and fatty acids composition of thigh meat in broilers. Perilla seed meal can be a lot of potential alternatives feedstuff for soybean meal in this study.

Meat Quality of Land Crab, &lt;i&gt;Cardiosoma armatum&lt;/i&gt; (Herklots, 1851) Fattened with Trash Fish and Formulated Diet

Meat quality in terms of its nutritional value, is a major factor when considering dietary items. This study highlighted the proximate and mineral compositions in the meat of Land Crab, Cardiosoma armatum (Herklots, 1851) fed with Trash Fish (Natural feed) and formulated diet for three (3) months. The meat proximate composition of both crabs fed the two different diets was similar, and there was no significant difference in the crude protein, fat and fiber contents of the meat (p &gt; 0.05). The diets had no significant effects on magnesium, sodium, potassium and phosphorus contents of the meat. Crabs fed formulated diet had significantly higher calcium content of 20428.52±0.10 mg/100 g, compared with the crabs fed with Trash Fish of 18541.83±0.10 mg/100 g (p &lt; 0.05). The pattern of mineral contents in both crabs was calcium &gt; phosphorus &gt; magnesium &gt; sodium &gt; potassium. This study suggested no negative effects of formulated diet on the meat quality. Therefore, formulated diet could be used for fattening of Land Crabs.