scholarly journals STUDY OF STAPHYLOCOCCUS AUREUS AND ITS STABLE L-FORM VARIANT: CHANGES IN CELLULAR COMPOSITION AS A FUNCTION OF LONG-CHAIN FATTY ACID SUPPLEMENTATION OF CULTURE MEDIUM

1975 ◽  
Vol 21 (2) ◽  
pp. 87-96 ◽  
Author(s):  
ELAINE JONG YIN ◽  
IDO SIMON ◽  
HAROLD J. SIMON
Keyword(s):  
Staphylococcus Aureus ◽  
Fatty Acid ◽  
Culture Medium ◽  
Chain Fatty Acid ◽  
Cellular Composition ◽  
Long Chain Fatty Acid ◽  
Fatty Acid Supplementation ◽  
Acid Supplementation ◽  
Form Variant ◽  
Long Chain

scholarly journals Effects of rumen-protected long-chain fatty acid supplementation during the finishing phase of beef steers on live performance, carcass characteristics, beef quality, and serum fatty acid profile1

2019 ◽  
Vol 3 (4) ◽  
pp. 1585-1592
Author(s):  
Christina E Bakker ◽  
Amanda D Blair ◽  
Judson K Grubbs ◽  
Anna R Taylor ◽  
Derek W Brake ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dry Matter ◽  
Carcass Characteristics ◽  
Chain Fatty Acid ◽  
Low Energy ◽  
Live Performance ◽  
Long Chain Fatty Acid ◽  
Serum Fatty Acid ◽  
Fatty Acid Supplementation ◽  
Long Chain

Abstract: The effect of a rumen-protected long-chain fatty acid (LCFA) supplement on live performance, meat quality, blood serum fatty acid profile, and predicted carcass composition was evaluated in this study. Angus steer calves (n = 99) were fed a low energy diet for 77 d prior to finishing. Prior to study initiation, the steers were separated into 12 pens with eight or nine steers per pen. Steers were transitioned from the low energy forage–based diet to a high concentrate diet containing high moisture ear corn, corn silage, dry rolled corn, soybean meal, and a liquid supplement containing monensin across 21 d. Megalac-R (RPFA) was fed to six pens at 2% of the diet dry matter. Control pens (CON; n = 6) received an additional 2% of diet dry matter as dry rolled corn and soybean meal. The final finishing diet net energy for gain (NEg) was 1.20 and 1.19 mega calories·kg−1 of dry matter (DM) for RPFA and CON treatments, respectively. Steers were weighed every 28 d. Growth performance data including average daily gain (ADG), gain to feed ratio (G:F), and DM intake (DMI) were calculated as both monthly and overall data. After a 147-d finishing phase, steers were transported to a commercial abattoir for slaughter. After a 28-h chilling period, carcass data were obtained by trained personnel. Final live weights were greater (P = 0.01) for RPFA than CON cattle. Overall ADG and overall G:F was increased (P = 0.02; P = 0.01, respectively) for RPFA cattle. Ribeye area, backfat thickness, kidney pelvic heart fat, marbling score, and yield grade did not differ (P > 0.05) between treatments. Predicted percent carcass fat was increased for RPFA cattle (P = 0.05). Conversely, predicted percent carcass protein (P = 0.07) and bone (P = 0.06) tended to be greater for CON cattle. Long-chain fatty acid supplementation during the finishing phase did not increase marbling scores of the steers in this study but did increase final live weight, HCW, and predicted total body fat. These results suggest that RPFA supplementation has the potential to increase adipose tissue development. However, it is likely that animal age during supplementation and duration of supplementation impact the effect RPFAs have on carcass characteristics.

Effects of certain long-chain fatty acid combinations on the ruminal microbe species relating to fermentation type in vitro

2018 ◽  
Author(s):  
Y. J. Jing ◽  
Y. F. Wang ◽  
J. Gao ◽  
J. L. Ouyang ◽  
L. Cheng
Keyword(s):  
Fatty Acid ◽  
Culture Medium ◽  
Chain Fatty Acid ◽  
Long Chain Fatty Acid ◽  
Butyrivibrio Fibrisolvens ◽  
Acid Type ◽  
Group A ◽  
Group B ◽  
Long Chain

This experiment was conducted to investigate the effects of certain long-chain fatty acid combinations on ruminal microbial community in vitro. Three cows fitted with permanent ruminal cannulas were used to provide rumen liquor for the in vitro trail. The treatments were fatty acid combinations of stearic acid, oleic acid, linoleic acid and linolenic acid, which respectively were group A (calcium palmitate, control), B (1.5%, 1.0%, 0.5% and 1.5%, acetic type fermentation), C (1.5%, 1.0%, 1.5% and 1.0%, propionic acid type fermentation), D (1.0%, 1.5%, 1.5% and 0.5%, butyric acid type fermentation). Three goats fitted with rumen cannula were used to provide the culture medium was collected for the measurement of the rumen microorganism in vitro culture. Culture medium was collected at 0, 3, 6, 12, 18 and 24 h. The results demonstrated that, except for Ruminococcus albus, all the other bacterial genus had significant differences between groups (P less than 0.05). The Fibrobacter succinogenes and Ruminococcusflavefaciens, Clostridium proteoclasticum and Ruminobacter amylophilus were higher in group B; Butyrivibrio fibrisolvens, Megasphaera elsdenii and Ruminococcus bromii were higher in group C; while Pseudobutyrivibrio ruminis was higher in group D. Different higher species in different treatments described above related to their fermentation type. It was also observed that, bacteria were the dominant flora in rumen and Megasphaera elsdeniiwere the dominant species in bacterial fraction no matter what the treatment is. It was therefore concluded that, certain fatty acid combinations have remarkable effects on the amount of ruminal specific bacteria species,mainly related to their fermentation type.

scholarly journals Long-chain fatty acid-induced changes in gene expression in neonatal cardiac myocytes

2000 ◽  
Vol 41 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Karin A. J.M. van der Lee ◽  
Michaël M. Vork ◽  
Johan E. De Vries ◽  
Peter H.M. Willemsen ◽  
Jan F.C. Glatz ◽  
...  
Keyword(s):  
Gene Expression ◽  
Fatty Acid ◽  
Cardiac Myocytes ◽  
Chain Fatty Acid ◽  
Long Chain Fatty Acid ◽  
Induced Changes ◽  
Long Chain
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