scholarly journals Comparison of Meat Quality Traits, Free Amino Acid and Fatty Acid on Longissimus Lumborum Muscles from Hanwoo, Holstein and Angus Steers, Fattened in Korea

2012 ◽  
Vol 32 (5) ◽  
pp. 591-597 ◽  
Author(s):  
Da-Woon Jeong ◽  
Mi-Ra Oh ◽  
Pil-Nam Seong ◽  
Soo-Hyun Cho ◽  
Geun-Ho Kang ◽  
...  
Animals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 508
Author(s):  
Schiavon ◽  
Bona ◽  
Carcò ◽  
Sturaro ◽  
Gallo

We studied the response of pigs from two crossbred genetic lines (GL) in the 60 to 145 kg body weight interval to a variation in the indispensable amino acid (AA) content of their feed. Ninety-six barrows of two paternal GLs (Hypor Maxter and PIC 337) were housed in eight pens and fed quasi ad libitum on feeds differing in their standardized ileal digestible (SID) indispensable AA contents. Pigs in four pens received feeds containing 9.4 to 8.0 g/kg of SID Lys (HAA), considered non-limiting, while the others received feeds containing 8.5 to 6.5 g/kg of SID Lys (LAA). The two feeds had identical indispensable lysine, methionine, tryptophan and threonine contents per unit of crude protein (CP). Feed intake, growth, carcass weight, and the weights of the lean and fat cuts were recorded, and samples of longissimus lumborum were analyzed. Data were analyzed using a two-way factorial mixed model. The LAA feed lowered the estimated N excretion (p < 0.001) compared with HAA, without affecting growth, carcass or meat quality traits. Genetic line had trivial effects and the AA level × genotype interaction was never significant. The two pig genotypes did not differ sufficiently in growth potential and leanness to respond differently.


2021 ◽  
Vol 53 (3) ◽  
Author(s):  
Aziz Şahin ◽  
Yüksel Aksoy ◽  
Emre Uğurlutepe ◽  
Ertuğrul Kul ◽  
Zafer Ulutaş

1963 ◽  
Vol 41 (1) ◽  
pp. 745-754 ◽  
Author(s):  
R. E. Huber ◽  
Saul Zalik

The metabolism of lipid and protein fractions in developing and germinating flaxseed was investigated. Fatty acid concentrations in the early-development stages of field- and greenhouse-grown plants showed similar increases, but the fatty acid composition of the mature seed appeared to be influenced by environment. The pattern of fatty acid interconversions during lipid synthesis suggested that more-unsaturated acids were formed from less-unsaturated ones. Studies at later stages of seed development indicated that the lipid was in a state of dynamic equilibrium. The relative proportions of each fatty acid during germination remained constant, suggesting that fatty acids were being broken down at a rate proportional to the amount originally present. During flaxseed development protein content increased steadily. Until 4 weeks after the plants had bloomed, the total content of each amino acid increased, but the free amino acid portion and amide nitrogen decreased. Subsequently all remained at a constant level. During germination the protein content and the proportions of the various amino acids of flaxseed remained constant but the free amino acid content rose. The radioisotope studies gave no clear indication of amino acid interconversions.


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