Effects of feeding modified tall oil and supplemental potassium and magnesium on growth performance, carcass characteristics, and meat quality of growing-finishing pigs

2000 ◽  
Vol 80 (3) ◽  
pp. 443-449 ◽  
Author(s):  
P. R. O'Quinn ◽  
J. L. Nelssen ◽  
J. A. Unruh ◽  
R. D. Goodband ◽  
J. C. Woodworth ◽  
...  
Keyword(s):  
Meat Quality ◽  
Muscle Glycogen ◽  
Whole Blood ◽  
Glycogen Content ◽  
Base Excess ◽  
Extracellular Fluid ◽  
Carcass Characteristics ◽  
Dietary Treatment ◽  
Longissimus Muscle ◽  
Tall Oil

Eighty crossbred gilts (initially 45.9 kg) were allotted randomly to one of four dietary treatments by weight and ancestry. The trial was arranged as a 2 × 2 factorial with two levels of modified tall oil (MTO) (0 or 0.50%) and added K2SO4-2MgSO4 (0 or 2%), equating to daily K and Mg intakes of 10.84 and 7.75 g, respectively. The corn-soybean meal diets were fed in two phases [45.9 to 76.2 and 76.2 to 118.1 kg body weight (BW)], and supplemental K/Mg was added in place of corn for the final 7 d preslaughter (starting at 114.1 kg BW). Dietary treatment did not affect (P > 0.10) average daily gain (ADG), average daily feed intake (ADFI), or gain to feed ratio (G/F). Feeding MTO decreased average backfat (P = 0.05) and increased intramuscular marbling (P = 0.04). Modified tall oil increased (P = 0.02) percentage lean, and K/Mg supplementation lowered (P = 0.04) longissimus muscle glycogen content. Dietary treatment did not affect (P > 0.10) other carcass characteristics or measures of meat quality. Feeding MTO increased plasma glucose (P = 0.05) and decreased (P = 0.10) base excess in the extracellular fluid. Feeding K/Mg decreased (P < 0.10) plasma pH, BUN, and base excess in the whole-blood and extracellular fluid and increased (P < 0.10) ionized Mg++ and lactate. These results support earlier research identifying MTO as a carcass modifier and contributor to meat composition and quality. Potassium and Mg supplementation altered whole-blood profiles and longissimus muscle glycogen content in a manner expected to improve pork quality, although not observed. Key words: Swine, modified tall oil, potassium, magnesium, meat quality

scholarly journals Relationships between Hha1 Calpastatin Gene Polymorphism, Growth Performance, and Meat Characteristics of Awassi Sheep

Animals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 667
Author(s):  
Khaleel I. Jawasreh ◽  
Ahmad H. Al-Amareen ◽  
Pauline Y. Aad
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Meat Quality ◽  
Gene Polymorphisms ◽  
Carcass Characteristics ◽  
Quality Parameters ◽  
Longissimus Muscle ◽  
Final Body Weight ◽  
Awassi Sheep ◽  
Ram Lambs

Advances in molecular genetics have allowed the identification of genes that can enhance livestock production. The aim of this study was to investigate possible relationships between the calpastatin (CAST) Hha1 gene polymorphisms and growth performance, carcass characteristics, and meat quality in Awassi sheep. A total of 87 blood samples were collected from two-week-old Awassi ram lambs. The amplification of the CAST Hha1 gene yielded a fragment of 622 bp. Three CAST genotypes were found in Awassi sheep: MM for two fragments (385 bp and 281 bp), MN for three fragments (622 bp, 385 bp, and 281 bp), and NN for only one fragment (622 bp). The M and N allele frequencies of the CAST Hha1 genotypes were 0.765 and 0.235, respectively, while the genotypic frequencies of MM, MN, and NN were 0.586, 0.356, and 0.057, respectively. Based on CAST Hha1 gene polymorphisms, three groups of lambs (MM: n = 8; MN: n = 6; and NN: n = 3 genotypes) were subjected to a fattening period of 70 days to investigate growth performance and meat characteristics. Only the final body weight and longissimus muscle width were significantly different between the three genotypes, while no significant differences were detected in any other carcass characteristics and meat quality parameters. In this study, new variants were observed in CAST using the Hha1 restriction site, potentially assisting in Awassi sheep breeding and selection programs to improve final body weight and longissimus muscle width.

Effects of modified tall oil and vitamin E on growth performance, carcass characteristics, and meat quality of growing-finishing pigs

2002 ◽  
Vol 80 (6) ◽  
pp. 1575-1585 ◽  
Author(s):  
A. T. Waylan ◽  
P. R. O'Quinn ◽  
J. A. Unruh ◽  
J. L. Nelssen ◽  
R. D. Goodband ◽  
...  
Keyword(s):  
Vitamin E ◽  
Growth Performance ◽  
Meat Quality ◽  
Carcass Characteristics ◽  
Finishing Pigs ◽  
Tall Oil

scholarly journals Relationship between changes in core body temperature in lambs and post-slaughter muscle glycogen content and dark-cutting

2014 ◽  
Vol 54 (4) ◽  
pp. 459 ◽  
Author(s):  
D. G. Pighin ◽  
W. Brown ◽  
D. M. Ferguson ◽  
A. D. Fisher ◽  
R. D. Warner
Keyword(s):  
Lactic Acid ◽  
Body Temperature ◽  
Meat Quality ◽  
Muscle Glycogen ◽  
Glycogen Content ◽  
Core Body Temperature ◽  
Correlation Coefficients ◽  
Significant Negative Correlation ◽  
Muscle Glycogen Content ◽  
Core Body

Pre-slaughter stress may decrease muscle glycogen content, a key element for a suitable low ultimate pH and prevention of dark-cutting meat. Body temperature monitoring is a tool used in research on animal stress, as an indicator of stress events. Possible relationships between body temperature of sheep and post-mortem muscle glycogen were investigated in this study. Body temperature was measured with intravaginal loggers inserted into each animal at 3 days pre-slaughter, to record body temperature every 3 min over a period of 3 days. Blood samples were collected from each animal at exsanguination for measurement of glucose and lactic acid concentrations. The muscle content of glycogen and lactic acid were determined in samples of M. longissimus collected at the level of the 13th rib, at 1 h post-slaughter. A plot of body temperature versus time showed a rise in body temperature from all animals during events such as mustering, loading onto the truck, unloading at the abattoir, during pre-slaughter handling and at slaughter. Pearson’s correlation coefficients were determined between (1) the main temperature increments occurring between farm and slaughter; and (2) post-slaughter muscle glycogen and lactate levels. A significant negative correlation was detected between elevation in core body temperature due to physical stress of sheep and muscle glycogen levels at slaughter. A low correlation was detected between body temperature and blood glucose or lactate concentrations. Further research should examine the relationship between core body temperature and meat quality in order to better understand the complex relationship between animal stress and meat quality.

Glycogen metabolites and meat quality in feed-restricted re-fed beef heifers

1996 ◽  
Vol 76 (4) ◽  
pp. 517-522 ◽  
Author(s):  
E. S. K. Yambayamba ◽  
M. A. Price ◽  
J. L. Aalhus ◽  
S. D. M. Jones
Keyword(s):  
Meat Quality ◽  
Muscle Glycogen ◽  
Caudate Lobe ◽  
Feed Restriction ◽  
Hepatic Glycogen ◽  
Longissimus Muscle ◽  
Beef Heifers ◽  
Period 2 ◽  
Wide Range ◽  
Longissimus Lumborum

Twenty-four Hereford crossbred heifers weighing 222 kg (22 kg SD) and aged 226 d (13 d SD) on day 0 were used to investigate the effects of feed restriction (period 1) followed by realimentation (period 2) on hepatic and longissimus muscle glycogen metabolites and meat quality. The heifers were randomly assigned in equal numbers to either ad libitum feeding (ADLIB) or maintenance feeding for 92 d followed by realimentation (REST), and serially slaughtered over a wide range of liveweights (200–460 kg). The concentrations of glycogen, its metabolites, and the total glucidic potential (GP) were determined from portions of the caudate lobe of the liver and the longissimus lumborum (LL) muscle. Meat quality assessment of the longissimus thoracis (LT) was done by objective means. Hepatic glycogen concentration was lower (P = 0.05) in REST than in ADLIB heifers, and GP tended to show a similar pattern (P = 0.07). There were no significant differences in the concentrations of glycogen or its metabolites in the LL of REST compared with ADLIB heifers. However, the heifers slaughtered during period 1 had lower muscle glycogen (P = 0.04) and higher lactate (P < 0.01) concentrations than those slaughtered during period 2. REST heifers had lighter slaughter weights resulting in smaller ribeye areas (P = 0.03), lower intramuscular fat concentration (P < 0.01) and higher moisture content (P < 0.01). Independent of slaughter weight, REST heifers had higher drip loss (P = 0.05) and lower L * (P = 0.01) than ADLIB heifers. These results suggest that feed restriction affects hepatic glycogen reserves and also has minor effects on meat quality traits in beef heifers. However, there was no indication that meat from REST heifers had severe quality defects such as DFD (dark, firm, dry) meat. Key words: Feed restriction, realimentation, longissimus muscle, liver, glucidic potential, meat quality

scholarly journals Effects of distillated myrtle (Myrtus communis L.) leaves’ intake on cull ewes’ body weight gain, carcass composition and meat quality

2020 ◽  
Vol 18 (4) ◽  
pp. e0613
Author(s):  
Souha Tibaoui ◽  
Hadhami Hajji ◽  
Samir Smeti ◽  
Ilyes Mekki ◽  
Ines Essid ◽  
...  
Keyword(s):  
Body Weight ◽  
Meat Quality ◽  
Body Weight Gain ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Dietary Treatment ◽  
Carcass Composition ◽  
Partial Substitution ◽  
Control Group ◽  
Feed Conversion

Aim of study: Cull ewes are characterized by poor body condition, low body weights and tough meat texture. This work aimed to investigate the effect of distillated myrtle leaves (MDL) intake on body weight (BW) gain; carcass characteristics and meat quality of Barbarine cull ewes.Area of study: Northwest of TunisiaMaterial and methods: 27 Barbarine ewes were assigned into 3 groups receiving 500 g of oat hay and 750 g of concentrate control group (C), while they were given concentrate and pellets, containing 87% MDL, as substitute to hay in MHay group; for MConc group, they were fed hay, concentrate and pellets containing 30% MDL in partial substitution to concentrate. At the end of the fattening period (90 days), ewes were slaughtered.Main results: The dry matter intake was higher (p<0.05) for MConc and C groups. The average daily gain was significantly higher for C and MConc than MHay groups (113 and 107 vs. 87 g, respectively). Ewes fed MHay and MConc had a significantly lower feed conversion rate than Control group (12.5 vs. 15.4). Dietary treatment had no significant effect on carcass joint’s weight and proportions. The dressing percentage and carcass tissue composition were similar for all groups. The ultimate pH, water cooking loss and color parameters values were unaffected by the type of diet.Research highlights: These findings revealed that MDL could substitute, in ewes feeding, up to 87% to hay or up to 30% to concentrate without negative effects on body weight, carcass characteristics and meat quality.

Effect of dietary sunflower oil and vitamin E on Beef cattle performance, carcass characteristics and meat quality

2003 ◽  
Vol 83 (1) ◽  
pp. 53-66 ◽  
Author(s):  
P. S. Mir ◽  
T. A. McAllister ◽  
S. Zaman ◽  
S. D. Morgan Jones ◽  
M. L. He ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Vitamin E ◽  
Meat Quality ◽  
Sunflower Oil ◽  
Carcass Characteristics ◽  
Gas Production ◽  
The Other ◽  
Longissimus Muscle ◽  
Dietary Treatments

In the present study, we tested the hypothesis that feeding sunflower oil (SFO) containing about 70% linoleic acid would increase conjugated linoleic acids (CLA) content of beef and that the increased CLA levels would improve meat shelf life. Two feeding trials were conducted to determine the effect of SFO supplementation on beef production , carcass characteristics and meat quality parameters. In addition, the visual aspects of beef quality in retail display as influenced by dietary vitamin E were compared with that of the increased CLA derived from dietary SFO. In exp. 1, 72 finishing steers (465 ± 9 kg) were individually fed one of four dietary treatments: an unsupplemented control finishing diet, the control diet supplemented with 6% SFO, 500 IU head-1 d-1 vitamin E or a combination of 6% SFO and 500 IU head-1 d-1 vitamin E for 95 d. Data from in vitro gas production from the diets indicated that oil inclusion reduced rate and lag time prior to initiation of gas production. Dry matter intake (DMI) declined (P < 0.05) due to dietary treatments without affecting average daily gain or feed conversion efficiency. Meat from steers fed all supplements was less red, more discolored and less acceptable after 2 d storage in a display case. In exp. 2, 40 steers (412.5 ± 11 kg), in individual pens, were used in a second completely randomized design experiment to evaluate the effect of supplementation of steam-rolled barley based finishing diets with 0, (CON) 3 or 6% SFO or 500 IU head-1 d-1 vitamin E on performance, carcass, meat characteristics, and fatty acid composition of beef. No difference (P > 0.05) in final liveweight, DMI, average daily weight gain (ADG) and feed efficiency (FE) of steers fed diets was found. Carcass grade fat was higher (P < 0.05) in steers fed the 6% SFO diet than the other diets. Retail acceptance score of meat obtained from steers fed 6% SFO was higher than from steers fed other diets (P < 0.05). In both experiments, the fatty acid composition of the meat indicated that C16:0 and C16:1 fatty acid levels were lower (P < 0.05) while C18:2 was higher (P < 0.05) in longissimus muscle of steers fed 6% SFO than the other diets. CLA content in fat from longissimus muscle was higher in steers fed the 6% SFO than control diets (3.5 vs. 3.0 mg g-1 in exp. 1 and 3.5 vs. 2.0 mg g-1 in exp. 2; P < 0.05). Hence supplementing feedlot diets with SFO for up to 108 d can increase CLA composition of beef. Positional distribution of fatty acids indicated that the majority of the CLA was in the sn-2 position of the triacyglycerol molecule. Key words: Beef cattle, conjugated linoleic acid, fatty acids, meat quality, sunflower oil, vitamin E

scholarly journals Identification of differentially expressed genes in chickens differing in muscle glycogen content and meat quality

BMC Genomics ◽  
2011 ◽  
Vol 12 (1) ◽  
Author(s):  
Vonick Sibut ◽  
Christelle Hennequet-Antier ◽  
Elisabeth Le Bihan-Duval ◽  
Sylvain Marthey ◽  
Michel J Duclos ◽  
...  
Keyword(s):  
Meat Quality ◽  
Differentially Expressed Genes ◽  
Muscle Glycogen ◽  
Glycogen Content ◽  
Differentially Expressed ◽  
Muscle Glycogen Content

scholarly journals Carcass Characteristics and Chemical Composition of the Longissimus Muscle of Purunã and 1/2 Purunã vs. 1/2 Canchin Bulls Meat Quality of Bulls

2008 ◽  
Vol 21 (9) ◽  
pp. 1296-1302 ◽  
Author(s):  
Ivanor Nunes do Prado ◽  
Polyana Pizzi Rotta ◽  
Rodolpho Martin do Prado ◽  
Jesuí Vergílio Visantaine ◽  
José Luis Moletta ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Meat Quality ◽  
Carcass Characteristics ◽  
Longissimus Muscle
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