Effects of trenbolone acetate on swine carcass characteristics and backfat composition

1992 ◽  
Vol 72 (4) ◽  
pp. 969-972
Author(s):  
M. Martinez ◽  
C. López-Bote ◽  
G. Sancho ◽  
J. Ventanas
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Key Words ◽  
Acid Composition ◽  
Carcass Characteristics ◽  
The Other ◽  
Control Treatment ◽  
Trenbolone Acetate ◽  
Key Words Pig ◽  
Fat Thickness

Twenty-four gilts and 24 barrows were divided into two groups of 12 of each gender. One group was implanted with 300 mg of trenbolone acetate, and the other one was used as a control. Treatment had no effect on fat thickness in gilts but significantly reduced fatness in barrows. The fatty acid composition of the backfat showed a tendency toward greater unsaturation in treated barrows. Key words: Pig, trenbolone acetate, anabolic

Effects of Added Dietary Fat on Fatty Acid Composition and Carcass Characteristics of Fattening Steers

1961 ◽  
Vol 20 (4) ◽  
pp. 712-717 ◽  
Author(s):  
R. L. Edwards ◽  
S. B. Tove ◽  
T. N. Blumer ◽  
E. R. Barrick
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Dietary Fat ◽  
Carcass Characteristics

scholarly journals The effect of using diet supplementation based on argane (Argania spinosa) on fattening performance, carcass characteristics and fatty acid composition of lambs

Heliyon ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. e05942
Author(s):  
Sana Moutik ◽  
Aouatif Benali ◽  
Mohammed Bendaou ◽  
El Haj Maadoudi ◽  
Mohammed Rachid Kabbour ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Carcass Characteristics ◽  
Fattening Performance ◽  
Argania Spinosa ◽  
Diet Supplementation

scholarly journals Carcass characteristics, chemical and fatty acid composition of Longissimus muscle of Purunã bulls slaughtered at 18 or 24 months of age

2010 ◽  
Vol 32 (3) ◽  
Author(s):  
Roberto Haruyoshi Ito ◽  
Ivanor Nunes do Prado ◽  
Jesuí Vergílio Visentainer ◽  
Rodolpho Martin do Prado ◽  
Carlos Alberto Fugta ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Carcass Characteristics ◽  
Longissimus Muscle

scholarly journals Effects of including a ruminally protected lipid supplement in the diet on the fatty acid composition of beef muscle

2003 ◽  
Vol 90 (3) ◽  
pp. 709-716 ◽  
Author(s):  
Nigel D. Scollan ◽  
Mike Enser ◽  
Suresh K. Gulati ◽  
Ian Richardson ◽  
Jeff D. Wood
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Neutral Lipid ◽  
Acid Composition ◽  
Saturated Fatty Acids ◽  
Fatty Acid Content ◽  
Control Treatment ◽  
Large Shift ◽  
Lipid Supplement

Enhancing the polyunsaturated fatty acid (PUFA) and decreasing the saturated fatty acid content of beef is an important target in terms of improving the nutritional value of this food for the consumer. The present study examined the effects of feeding a ruminally protected lipid supplement (PLS) rich in PUFA on the fatty acid composition of longissimus thoracis muscle and associated subcutaneous adipose tissue. Animals were fed ad libitum on grass silage plus one of three concentrate treatments in which the lipid source was either Megalac (rich in palmitic acid; 16:0) or PLS (soyabean, linseed and sunflower-seed oils resulting in an 18:2n−6:18:3n−3 value of 2·4:1). Treatment 1 contained 100g Megalac/kg (Mega, control); treatment 2 (PLS1) contained 54g Megalac/kg with 500g PLS/d fed separately; treatment 3 (PLS2) contained no Megalac and 1000g PLS/d fed separately. The PLS was considered as part of the overall concentrate allocation per d in maintaining an overall forage:concentrate value of 60:40 on a DM basis. Total dietary fat was formulated to be 0·07 of DM of which 0·04 was the test oil. Total intramuscular fatty acids (mg/100g muscle) were decreased by 0·31 when feeding PLS2 compared with Mega (P<0·05). In neutral lipid, the PLS increased the proportion of 18:2n−6 and 18:3n−3 by 2·7 and 4·1 on diets PLS1 and PLS2 v. Mega, respectively. Similar responses were noted for these fatty acids in phospholipid. The amounts or proportions of 20:4n−6, 20:5n−3 or 22:6n−3 were not influenced by diet whereas the amounts and proportions of 22:4n−6 and 22:5n−3 in phospholipid were decreased with inclusion of the PLS. The amounts of the saturated fatty acids, 14:0, 16:0 and 18:0, in neutral lipid were on average 0·37 lower on treatment PLS2 compared with Mega. Feeding the PLS also decreased the proportion of 16:0 in neutral lipid. The amount of 18:1n-9 (P=0·1) and the amount and proportion of 18:1 trans (P<0·01) were lower on treatments PLS1 and PLS2 in neutral lipid and phospholipid. Conjugated linoleic acid (cis-9, trans-11) was not influenced by diet in the major storage fraction for this fatty acid, neutral lipid. The PUFA:saturated fatty acids value was increased markedly (×2·5) with inclusion of the PLS (P<0·001) while the σn−6:n−3 value increased slightly (×1·2; P=0·015). The results suggest that the protected lipid used, which was rich in PUFA, had a high degree of protection from the hydrogenating action of rumen micro-organisms. The PLS resulted in meat with a lower content of total fat, decreased saturated fatty acids and much higher 18:2n−6 and 18:3n−3. The net result was a large shift in polyunsaturated: saturated fatty acids, 0·28 v. 0·08, on feeding PLS2 compared with Mega, respectively.

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