scholarly journals The Effect of Humic-Fatty Acid Preparation on Production Parameters and Meat Quality of Growing Rabbits

2012 ◽  
Vol 12 (1) ◽  
pp. 117-126 ◽  
Author(s):  
Dorota Miśta ◽  
Anna Rząsa ◽  
Tadeusz Szmańko ◽  
Wojciech Zawadzki ◽  
Marzena Styczyńska ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Meat Quality ◽  
Control Diet ◽  
Diet Group ◽  
Control Group ◽  
Feed Conversion ◽  
Production Parameters ◽  
New Zealand White Rabbits ◽  
Pelleted Diet

The Effect of Humic-Fatty Acid Preparation on Production Parameters and Meat Quality of Growing RabbitsThe aim of the study was to determine the effect of a humic-fatty acid preparation on production parameters and meat quality of rabbits. Three groups of New Zealand White rabbits were used (one control and two experimental) with 8 animals per group. The animals of group C (control) were fed standard pelleted diet, group H5 received a control diet supplemented with 5%, and group H10 a control diet with 10% humic-fatty acid preparation. The experiment was terminated after 6 weeks feeding, when rabbits were slaughtered. The experimental groups showed higher gains and a higher feed conversion ratio than the control group. The dietary inclusion of the experimental additive had a beneficial effect on the meat quality traits, such as Fe concentration, hardness and colour, but it also increased the susceptibility of fat to oxidative changes.

scholarly journals Effect of BioPlus YC Probiotic Supplementation on Gut Microbiota, Production Performance, Carcass and Meat Quality of Pigs

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1581
Author(s):  
Artur Rybarczyk ◽  
Elżbieta Bogusławska-Wąs ◽  
Alicja Dłubała
Keyword(s):  
Bacillus Subtilis ◽  
Meat Quality ◽  
Bacillus Licheniformis ◽  
Average Daily Gain ◽  
Production Performance ◽  
Probiotic Bacteria ◽  
Control Group ◽  
Production Traits ◽  
Feed Conversion

The objective of the study was to determine the effects of probiotic bacteria Bacillus licheniformis and Bacillus subtilis on microbiological properties of feed mixtures and on the digestive tract content as applicable to production traits and carcass characteristics of fatteners. The experiment was performed on 83,838 fatteners from four successive (insertions) productions in two groups. From the seventy eighth day of age till marketing to the slaughter plant, the pigs were supplied with BioPlus YC probiotic (Chr. Hansen) in the amount of 400 g/t. The preparation contained a complex of probiotic bacteria Bacillus licheniformis DSM 5749, and Bacillus subtilis DSM 5750 spores in a 1:1 ratio. From the fourth insertion, after reaching a body weight of approximately 112 kg, 60 fatteners were selected from each group to measure carcass quality and half of them for meat quality evaluation. Moreover, microbiological analyses in feed and colon were performed. The study showed that BioPlus YC probiotics supplementation resulted in a significantly higher count of B. subtilis and B. licheniformis in the feed, a higher count of B. subtilis, B. licheniformis and LAB, as well as a lower count of Enterobacteriaceae, Enterococcus, Clostridium and Bacillus sp. in the mucosa and in the colorectal content of the test pigs. Our work has shown that supplementation with the BioPlus YC probiotic had a positive effect on the production traits of pigs mainly by reducing mortality (2.83%, p = 0.010), lowering feed conversion ratio—FCR (2.59 kg/kg, p = 0.013), better average daily gain—ADG (0.95 kg/day, p = 0.002) and shorter fattening period (77.25 days, p = 0.019) when compared to the control group (4.19%; 2.79 kg/kg; 0.89 kg/day; 92.8 days, respectively). The addition of the specific Bacillus bacteria did not influence carcass and meat characteristics of the test fatteners.

scholarly journals Effects of Long-Term Gentle Handling on Behavioral Responses, Production Performance, and Meat Quality of Pigs

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 330 ◽  
Author(s):  
Chao Wang ◽  
Yongjie Chen ◽  
Yanju Bi ◽  
Peng Zhao ◽  
Hanqing Sun ◽  
...  
Keyword(s):  
Heart Rate ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Production Performance ◽  
Control Group ◽  
Carcass Quality ◽  
Feed Conversion ◽  
Significant Difference

In order to investigate the effect of gentle handling on the behavior, performance, and meat quality of pigs from weaning to slaughter, 144 6-week-old weaned hybrid Min piglets (a native breed) were selected and divided into a handling group (HG: 9 pens × 8 pigs) and a control group (CG: 9 pens × 8 pigs). After 6 weeks of handling, we observed and then evaluated the pigs’ responses to a handler with behavioral scores. Moreover, we measured heart rate and production performance. Three pigs were randomly selected from each of the 18 pens and divided into a handling group (HG: n = 27) and a control group (CG: n = 27), and the HG pigs were given gentle handling until slaughter. Subsequently, we evaluated meat quality and the production performance of six pigs from each group. The results show that AA test (approaching–avoidance test) scores in HG pigs, the number of contacts with the handler and absence of contact with the handler, were significantly higher than in the CG pigs (p < 0.01). The occurrences of avoidance and looking at the handler were lower in the HG than in the CG group (p < 0.01); however, heart rate was not found to be significantly different between the two groups (p = 0.63). No significant difference was found in the average daily gain, average daily feed intake, and feed conversion ratio between the two groups during the two periods (p > 0.05). The b* value was determined 45 min after slaughter, and it was significantly lower in the HG than that in the CG group (p = 0.002). Furthermore, 2 h after slaughter, the L value of the HG group was significantly higher than that of the CG group (p = 0.047), but no difference was observed in carcass quality or other meat quality indicators between the two groups (p > 0.05). The results indicate that gentle handling could reduce pigs’ anxiety and increase their willingness to approach the handler, increasing the intimacy of the pigs and handlers. However, long-term gentle handling had little effect on pig performance, carcass quality, and meat quality.

Effect of dietary supplementation of salts of organic acids on gut morphology and meat quality of broilers

2017 ◽  
Author(s):  
Vinus Vinus ◽  
M. A. Akbar ◽  
B. S. Tewatia ◽  
Sushil Kumar
Keyword(s):  
Organic Acids ◽  
Meat Quality ◽  
Control Diet ◽  
Feed Additives ◽  
Metabolizable Energy ◽  
Coliform Bacteria ◽  
Control Group ◽  
Gut Morphology ◽  
Salts Of Organic Acids

The present investigation was conducted to appraise the effect of different levels of salts of organic acids on the gut morphology and meat quality of broilers. A total 300 day-old commercial chicks were randomly divided into 5 treatments. Each treatment consists of 6 replicates having 10 birds per replicate. The control diet was formulated to contain approximately the same metabolizable energy (ME), crude protein and limiting amino acids (methionine and lysine) as per the requirements of birds. The first group (T1) was fed on control diet without any feed additives, while, groups (T2, T3, T4 and T5) were fed on basal diets containing sodium butyrate and calcium propionate @ 0.5% and 1.0% respectively. Six birds from each treatment (1 per replication) were randomly selected for slaughter and collection of samples and microbial study at day 42. Performance of birds in terms of body weight and feed conversion ratio was significantly improved in treated groups. Results showed that in gut morphology, pH was reduced significantly (P less than 0.05) in T3 and T5 (6.24 and 6.22, respectively) as compared to the control group (6.64) while significant improvement was observed in villus height and crypt depth in all treatment groups and were highest in T3 (539.50µm,135.67 µm). Lowest Coliform bacteria (log CFU/g.)was recorded in T3 (16.57) which was significantly differ with the T1 (19.17) and Lactobacilli count was significantly increased in all treatments as compared to control.Supplementation of organic acids reduced meat cholesterol level significantly and lowest was in T5(48.03mg/dL) followed by T3 (48.30mg/dL). Similarly SFA decreased while PUFA content was increased significantly on supplementation of salts as compared to control.

scholarly journals Black soldier fly larval meal in feed enhances growth performance, carcass yield and meat quality of finishing pigs

2021 ◽  
pp. 1-16
Author(s):  
S.Y. Chia ◽  
C.M. Tanga ◽  
I.M. Osuga ◽  
A.O. Alaru ◽  
D.M. Mwangi ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Body Weight Gain ◽  
Control Diet ◽  
Protein Source ◽  
Feed Conversion ◽  
Large White ◽  
Black Soldier Fly ◽  
Pig Feed

Using black soldier fly (BSF, Hermetia illucens) larvae as a novel protein source substituting fishmeal (FM) in animal feeds is globally gaining momentum. BSF can be reared on agro-industrial residues. However, incorporating BSF larval meal (BSFLM) into finisher pig diets has received inadequate attention. This study evaluated the effects of replacing dietary FM with BSFLM on growth, carcass traits and meat quality of finisher pigs. A control diet (including FM: 0% BSFLM) was compared with four dietary levels of replacement of FM with BSFLM at 25, 50, 75 or 100%. Forty hybrid pigs (crossbreeds of purebred Large White and Landrace) were randomly allocated to the five different dietary treatments. Feed intake, body weight gain and feed conversion ratio were measured. After 98 days of feeding, all pigs were slaughtered for the evaluation of carcass and nutritional content of the organ and muscle tissues. Diet significantly affected pig growth performance. Carcass weight of pigs fed diets with BSFLM replacing FM by 50, 75 or 100% (w/w) was higher than for pigs fed control diet with 100% FM as protein source. Crude protein content of pork tissues was high (65-93% on dry-matter basis) across all dietary groups. Therefore, BSFLM can replace FM in pig feed. This is relevant for commercial pig feed production and provides for the first time a nutritional analysis of pork derived from pigs raised on BSFLM.

Effects of aging and dietary supplementation with polyphenols from Pinus taeda hydrolysed lignin on quality parameters, fatty acid profile and oxidative stability of beef

2020 ◽  
Vol 60 (5) ◽  
pp. 713 ◽  
Author(s):  
A. Maggiolino ◽  
J. M. Lorenzo ◽  
A. Salzano ◽  
M. Faccia ◽  
F. Blando ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Oxidative Stability ◽  
Pinus Taeda ◽  
Meat Quality ◽  
Shear Force ◽  
Control Diet ◽  
Thiobarbituric Acid ◽  
Control Group ◽  
Thiobarbituric Acid Reactive Substances ◽  
Aging Period

Context The inclusion of Pinus taeda hydrolysed lignin (PTHL) in beef diets could improve quality and stability of meat, but effects could vary through the aging period (AP). Aim The aim was to evaluate the effects of the PTHL inclusion in the diet of finishing beef cattle on meat quality, fatty acid composition and oxidative stability at Days 1, 8, 11 and 15 of aging. Methods Forty Limousin bulls (340 ± 42 kg) were fed ad libitum on a total mixed ration (TMR). The control group received exclusively TMR for 120 days, while the experimental group received the same TMR as the control group but supplemented with PTHL (Oxifenol, I-Green, Padua, Italy; 35 g/day per head at 1–90 days and 70 g/day per head at 91–120 days). Key results Diet did not influence the chemical composition, pH, cooking loss, Warner–Bratzler shear force and hydroperoxide content. The Warner–Bratzler shear force (P &lt; 0.001) decreased, while lightness (P &lt; 0.01) and hydroperoxides (P &lt; 0.001) increased through the aging period. Thiobarbituric acid reactive substances were similar for both diets at 1 and 15 days. However, thiobarbituric acid reactive substances at 8 and 11 days were higher for control than for the PTHL diet (P = 0.023 for interaction). Protein carbonyls were higher for control than for the PTHL diet at 8 days (P = 0.003 for interaction), but similar for both diets for the other dates. Saturated, monounsaturated and polyunsaturated fatty acids varied through the AP with PTHL diet, while no changes were observed with control diet (P &lt; 0.01 for interactions). At 11 days, the n-6:n-3 ratio passed from being the minimum value with the PTHL diet to be the maximum with control diet (P &lt; 0.01 for interaction). Conclusions The effects of PTHL inclusion in bull finishing diets depends on the AP but, generally, may result in beef with meat with beneficial effects on human health. Implications Including PTHL in the diet of finishing bulls can be useful to improve meat quality, favouring the use of natural waste substances deriving from vegetal production.

scholarly journals Effect of Excessive or Restrictive Energy on Growth Performance, Meat Quality, and Intramuscular Fat Deposition in Finishing Ningxiang Pigs

Animals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 27
Author(s):  
Jiayi Chen ◽  
Fengming Chen ◽  
Xue Lin ◽  
Yaodong Wang ◽  
Jianhua He ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Growth Performance ◽  
Meat Quality ◽  
Fatty Acid Synthase ◽  
Control Diet ◽  
Average Daily Gain ◽  
Intramuscular Fat ◽  
Feed Conversion ◽  
Cross Sectional ◽  
Fatty Acid Binding

This study investigated the effects of excessive or restrictive energy on growth performance, meat quality, intramuscular fat (IMF) deposition, and related gene expression in finishing Ningxiang pigs. A total of 36 Ningxiang pigs (43.26 ± 3.21 kg) were randomly assigned to three treatments (6 pens of 2 piglets per treatment) and fed by one of three dietary treatments until the pigs of each treatment weighed approximately 75 kg equally. The three treatments were control diet (digestible energy, DE:13.02 MJ/kg, CON), excessive energy diet (DE 15.22 MJ/kg, EE), and restrictive energy diet (DE 10.84 MJ/kg, RE). Results showed that EE improved average daily gain (ADG) and feed conversion ratio (FCR) (p < 0.01), while nothing significantly changed by RE except FCR increasing (p < 0.01). EE increased the content of IMF and triglycerides (TG) (p < 0.05), L*24h and b*45min (p < 0.01), while decreasing cooking loss and meat tenderness in longissimus thoracis (LT) (p < 0.05). b*24h was significantly increased with the increase of energy level (p < 0.01). Meanwhile, EE increased the cross-sectional area (CSA) of muscle fiber and the mRNA expression of myosin heavy chain (MyHC) IIb, acetyl CoA carboxylase (ACC), fatty acid synthase (FAS), and adipocyte fatty-acid binding protein (FABP4) (p < 0.05). In addition, throughout: A diet supplemented with excessive energy promoted IMF deposition by positively changing lipogenic potential while decreasing tenderness by increasing glycolytic muscle fibers, which together affected meat quality. In terms of growth performance and meat quality, the present study suggests that the low-energy diet is suitable for finishing Ningxiang pigs.

scholarly journals Effect of an extruded linseed diet on meat quality traits in Nero Lucano pigs

2020 ◽  
Vol 49 (6) ◽  
pp. 1093-1103
Author(s):  
S Tarricone ◽  
M.A. Colonna ◽  
F Giannico ◽  
M Ragni ◽  
A Lestingi ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Meat Quality ◽  
Fatty Acid Profile ◽  
Control Diet ◽  
Average Daily Gain ◽  
Feed Conversion ◽  
Homogeneous Groups ◽  
Linum Usitatissimum L ◽  
Dietary Treatments ◽  
Physical And Chemical

The study aimed to evaluate the effect of a diet containing extruded linseed (Linum usitatissimum L.) on growth performances, carcass traits and meat quality in Nero Lucano pigs. Sixteen male piglets were weaned at about 50 days of age and divided into two homogeneous groups fed a control diet (C) or a diet containing 3% extruded linseed (EL). The trial lasted 32 weeks and pigs were slaughtered at 9 months of age. Samples from the Longissimus dorsi (Ld) muscle were analysed to assess physical and chemical parameters and intramuscular fatty acid composition. Average daily gain, feed intake and feed conversion ratio were not affected by the diet. Pigs fed the C diet showed a significantly greater slaughter weight in comparison to the EL group (116.50 vs 108.25 kg) Meat pH and chemical composition were not influenced by the diet. No differences were found for shear force (WBS) in raw meat, while cooked meat of the EL group showed a lower WBS value. The EL diet significantly lowered total SFA and increased total PUFA, of both n-6 and n-3 series. Among the n-6, significant differences between dietary treatments were found for linoleic acid. As for the n-3 series, EL feeding significantly enhanced linolenic acid, EPA, DPA and DHA. Feeding EL also significantly lowered the PUFA/SFA and n-6/n-3 ratios and the AI and TI, with benefits for human health. In conclusion, dietary supplementation with 3% EL didn't affect growth performance while it improved the fatty acid profile of meat. Keywords: fatty acid profile, feeding, flaxseed, pork

scholarly journals The Effect of Amaranth Seeds, Sea Buckthorn Pomace and Black Chokeberry Pomace in Feed Mixtures for Broiler Chickens on Productive Performance, Carcass Characteristics and Selected Indicators of Meat Quality

2018 ◽  
Vol 18 (2) ◽  
pp. 501-523 ◽  
Author(s):  
Sylwia Orczewska-Dudek ◽  
Mariusz Pietras ◽  
Joanna Nowak
Keyword(s):  
Body Weight ◽  
Fatty Acid ◽  
Broiler Chickens ◽  
Feed Additives ◽  
Sea Buckthorn ◽  
Control Group ◽  
Feed Conversion ◽  
Group Iii ◽  
Flax Oil ◽  
Production Parameters

Abstract The aim of the present study was to determine the effect of amaranth seeds, dried sea buckthorn pomace and dried chokeberry pomace on the growth performance of broiler chickens and on the fatty acid profile and oxidative stability of meat lipids. The study was conducted on 480 Ross 308 chickens assigned in the second production phase to 4 experimental groups. The birds from the control group received 3% flax oil, while the chickens from the experimental groups were fed with mixtures containing: 3% flax oil and 8% amaranth seeds (group II), 3% flax oil and 3% dried sea buckthorn pomace (group III), and 3% flax oil and 3% dried chokeberry pomace (group IV). Basic production parameters were evaluated for each feeding period. At 42 days of age, 8 birds with body weight close to the average from each group were slaughtered. A simplified analysis of the chicken carcasses was conducted and samples of the breast muscles were collected for further analysis. The addition of 8% amaranth seeds into the feed mixtures in the second feeding phase decreased body weight gains (P<0.05) and increased the feed conversion ratio compared with groups receiving sea buckthorn or chokeberry pomace. However, the addition of amaranth seeds into the feed mixtures increased breast muscle yield (P<0.05) and decreased fat content in comparison to the other experimental groups. Moreover, sensory analysis of the breast muscles from chickens fed the diet with amaranth seeds revealed that they were characterised by a better aroma (P<0.05) and flavour. The studied feed additives did not significantly affect the physicochemical properties of the breast muscles. Sea buckthorn pomace efficiently slowed down lipid oxidation in the breast muscles. The obtained results indicate that using tested plant additives in feed mixture may be an effective way to improved production parameters of broiler chicken and effectively enriched meat in n-3 fatty acid and protect against excessive oxidation of lipids.

scholarly journals Effect of Organic Production System on the Performance and Meat Quality of Two Purebred Slow-Growing Chicken Breeds

2017 ◽  
Vol 17 (4) ◽  
pp. 1197-1213 ◽  
Author(s):  
Ewa Sosnówka-Czajka ◽  
Iwona Skomorucha ◽  
Renata Muchacka
Keyword(s):  
Body Weight ◽  
Fatty Acid ◽  
Meat Quality ◽  
Rhode Island ◽  
Fatty Acid Profile ◽  
Organic Production ◽  
Feed Conversion ◽  
Native Breed ◽  
Meat Samples

AbstractThe objective of the study was to compare the effect of organic and conventional rearing systems on the productivity and meat quality of Yellowleg Partridge (Ż-33) and Rhode Island Red (R-11) chickens. A total of 492 sexed experimental birds (Gallus domesticus) were assigned to four groups. In groups I-C and III-C, the Ż-33 and R-11 chickens were reared under intensive conditions following conventional farming principles. In groups II-O and IV-O, the Ż-33 and R-11 chickens were kept according to organic farming principles. Body weight, feed conversion (kg/kg gain) and mortality were recorded throughout the study. On day 140 of rearing, the native breed chickens were subjected to simplified slaughter analysis, and meat pH, muscle colour, water holding capacity and chilling loss were determined. The meat samples were analysed for the chemical composition and profile of fatty acids, and the peroxidizability index (PI), thrombogenic index (TI) and atherogenicity index (AI) were calculated. The organically raised chickens were characterised by higher body weight (P≤0.01), better feed conversion (P≤0.01) and more favourable fatty acid profile of the muscles compared to the conventionally reared birds. Under organic conditions, the R-11 chickens showed better productivity but slightly poorer fatty acid profile of the muscles compared to the Ż-11 chickens.

scholarly journals Efectos de la suplementación dietética con Ruta graveolens en el desempeño, las características de la canal y la calidad de la carne de conejo

2020 ◽  
Vol 11 (4) ◽  
pp. 1220-1230
Author(s):  
Maricela Ayala Martínez ◽  
Armando Zepeda-Bastida ◽  
Sergio Soto-Simental
Keyword(s):  
Growth Performance ◽  
Control Diet ◽  
Control Group ◽  
Ruta Graveolens ◽  
Feed Conversion ◽  
Alternative Feed ◽  
Texture Parameters ◽  
Feed Source ◽  
Feed Conversion Rate

Ruta graveolens is a weed that can be used to feed rabbits. The aim of this study was to determine growth performance, carcass and meat quality of rabbits after their dietary supplementation with Ruta graveolens. Sixty (60) weaned rabbits were randomly assigned to five treatments; control diet (C) or diets supplemented either with leaves (25RL or 50RL) or complete plant of Ruta graveolens (25CP or 50CP). The use of Ruta graveolens has a similar (P>0.05) growth performance to the control group and feed conversion rate. Carcass quality was different (P<0.05) among treatments in empty body weight, empty gastrointestinal tract and fat. The pH decreased when Ruta graveolens was used to feed growing rabbits, but meat produced better texture parameters than control group. The results obtained in the present study suggest that Ruta graveolens can be considered as an alternative feed source in the diets of rabbits.

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