scholarly journals Comparative experience of the introduction of the amino acid methionine and whey powder to broilers

2021 ◽  
Vol 937 (3) ◽  
pp. 032009
Author(s):  
Matvey Orlov ◽  
Vladimir Zaycev
Keyword(s):  
Amino Acid ◽  
Subcutaneous Fat ◽  
Average Weight ◽  
Safety Index ◽  
Whey Powder ◽  
Amino Acid Methionine

Abstract The paper presents the results of the experience of introducing methionine and its effect on the safety and average weight indicators and the distribution of carcasses by category. During the study, the following conclusions were made: the safety index with the addition of methionine increased by 0.3%; the average weight of chickens after 30 days increased by 10.03%, and after 60 days by 1.99%; with the introduction of methionine after 30 days of the experiment, the average weight of rooster chickens was higher by 6.25%, after 60 days by 0.77%, after 75 days by 2.7%; the introduction of methionine into the diet increases the number of carcasses of category I by 1.7%; the average weight by category with the introduction of methionine led to an increase in the weight of category I by 7.86%; the additive reduced the amount of internal fat of the slaughter yield by 0.2%, increased the output of muscle by 0.6% and subcutaneous fat by 0.1%; methionine reduces the level of fat by 0.2-0.3%, increases the level of protein by 0.7-0.8%.

scholarly journals EFFECT OF STORAGE TIME ON THE QUALITY OF SMOKED HETEROCLARIAS

2020 ◽  
Vol 25 (2) ◽  
pp. 30
Author(s):  
Ayodeji Ahmed Ayeloja ◽  
W. A. Jimoh ◽  
T. O. Uthman ◽  
M. O. Shittu
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Storage Time ◽  
Protein Quality ◽  
Storage Period ◽  
Essential Amino Acids ◽  
Vulnerable Groups ◽  
Average Weight ◽  
Duration Of Storage

Effect of storage time on the quality of smoked heteroclarias was studied. 108 samples of heteroclarias (average weight 210 + 15g) was used. Analysis carried out include: proximate, mineral composition (Ca, Na, Fe and Mg), biochemical, amino acid and sensory evaluation. Data obtained was subjected to Analysis of Variance (ANOVA) while the sensory data was subjected to nonparametric test (Kruskal Wallis test). Smoked heteroclarias have good nutritional quality in terms of proximate, mineral and amino acids all of which decrease with increase in duration of storage at ambient temperatures. Glutamic acid  was the most predominant amino acid and the highest non-essential amino acid (NEEA), lysine was the most predominant EAA. There was higher concentration of non-essential amino acids than essential amino acids, EAA/NEAA ratio (0.86 – 0.93) recorded indicates that the fish have excellent protein quality; its the predicted protein efficiency ratio (P-PER) ranged between 3.44-3.61 and its biological value ranged between 79.84 -75.04. Its chemical score and TEAA decrease with increase in storage time. Its texture quality reduced significantly (χ2 = 12.207, p<0.01) with increased storage period. It is therefore recommended that smoked heteroclarias be consumed as soon as it is smoked and regularly for good healthy conditions especially among children, aged and other vulnerable groups.

Biogenic amino acid methionine-based corrosion inhibitors of mild steel in acidic media

2019 ◽  
Vol 26 (4) ◽  
pp. 467-482 ◽  
Author(s):  
L. K. M. O. Goni ◽  
M. A. Jafar Mazumder ◽  
S. A. Ali ◽  
M. K. Nazal ◽  
H. A. Al-Muallem
Keyword(s):  
Amino Acid ◽  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Acidic Media ◽  
Amino Acid Methionine

Carcase development in three breeds of finishing suckled calves fed to grow at different rates of liveweight gain and slaughtered serially

1984 ◽  
Vol 1984 ◽  
pp. 46-46
Author(s):  
J R Southgate ◽  
G L Cook ◽  
A J Kempster
Keyword(s):  
Subcutaneous Fat ◽  
Average Weight ◽  
Equal Weight ◽  
Fat Percentage ◽  
Daily Gain ◽  
Weight Groups ◽  
Friesian Cows

The growth and carcase development of Angus -, Charolais -, Hereford - and Limousin cross yearling steers out of Hereford x Friesian cows, each fed to grow at three levels of daily gain during winter finishing and slaughtered at tree levels of estimated subcutaneous fat percentage (SFe) was investigated in a two year trial involving 240 animals (Table 1). Within each breed and year the two steers which had the extreme weights, and one of average weight were slaughtered at the start of the trial (ISG). The remaining 27 animals were allocated randomly amongst equal weight groups to the nine treatments.

cDNA cloning, expression and regulation analysis of goose adipose triglyceride lipase (ATGL) gene

2011 ◽  
Vol 91 (3) ◽  
pp. 363-369 ◽  
Author(s):  
Lizhi Lu ◽  
Fang Wang ◽  
Xiaoyan Chen ◽  
Hao Yuan ◽  
Yong Tian ◽  
...  
Keyword(s):  
Amino Acid ◽  
Cdna Cloning ◽  
Mrna Level ◽  
Subcutaneous Fat ◽  
Avian Species ◽  
Pcr Analysis ◽  
Adipose Triglyceride Lipase ◽  
Triglyceride Lipase ◽  
Acid Protein

Lu, L., Wang, F., Chen, X., Yuan, H., Tian, Y., Li, J., Shen, J., Tao, Z. and Fu, Y. 2011. cDNA cloning, expression and regulation analysis of goose adipose triglyceride lipase ( ATGL ) gene. Can. J. Anim. Sci. 91: 363–369. Adipose triglyceride lipase (ATGL) has an important role in adiposome turnover in mammals. In avian species, the ATGL gene has been reported in chicken, duck, quail, turkey and parrot. We describe here the cloning and characterization of the ATGL in goose. Goose ATGL encodes a 482-amino-acid protein, which contains a “GXSXG” motif and 169-amino acid “patatin” domain. The deduced goose ATGL protein shows more than 85% identity to the reported avian species. Quantitative real-time RT-PCR analysis reveals that the goose ATGL mRNA is more highly expressed in subcutaneous fat. We also identify changes of goose ATGL mRNA expression pattern after over-feeding treatment, which may reveal that expression of ATGL in obesity is tissue-specific in goose. Moreover, we conclude that the mRNA level of ATGL can be regulated by oleic acid in goose adipocytes.

Urethral plug-a new secondary male sex characteristic in rat and other rodents

1982 ◽  
Vol 16 (2) ◽  
pp. 151-155 ◽  
Author(s):  
Ivo Kunstýř ◽  
Werner Küpper ◽  
Herwig Weisser ◽  
Susanne Naumann ◽  
Claus Messow
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Adult Male ◽  
Seminal Vesicles ◽  
Male Rats ◽  
Average Weight ◽  
Adult Rats ◽  
Vaginal Plug ◽  
Male Sex ◽  
Proximal Urethra

The plug is an eosinophilic mass, partly homogenous and partly porous, filling the proximal urethra in rats and occasionally extending into the bladder. Its average weight in 131 adult rats was 0·063 g. These plugs are normally present in the urethra of adult male rats, and this seems to be the case for all laboratory Muridae and Cavidae. The absence of a plug in an adult male may be a sign of abnormality associated with failing health. There is an interesting similarity between the amino acid composition of the content of seminal vesicles, that of the urethral plug, and that of the copulatory vaginal plug in female rodents.

scholarly journals The share of tissues in the pig round depending on the genotype, gender and season

2019 ◽  
Vol 35 (4) ◽  
pp. 367-375
Author(s):  
Cedomir Radovic ◽  
Marija Gogic ◽  
Nenad Katanic ◽  
Mirko Novakovic ◽  
Dragan Radojkovic ◽  
...  
Keyword(s):  
Muscle Tissue ◽  
Subcutaneous Fat ◽  
Average Weight ◽  
Fatty Tissue ◽  
Large White ◽  
Four Seasons ◽  
Muscle Tissues ◽  
Subcutaneous Fatty Tissue ◽  
Intermuscular Fat ◽  
Breed Crosses

The study included 201 offspring (108 castrated males and 93 females) of Landrace (L), Large White (LW) and Pietrain (P) sires. The studied animals were of following genotype: Landrace (L; n = 48); two breed crosses with 50:50 share of parental breeds (LWxL, n=32; and PxL, n=23), two breed crosses with 75% of paternal breed [Lx(?LWxL), n=35] and [LWx(?LxWL) n=38] and three breed crosses [Px(?LWxL) n=25]. Animals included in this study were born during four seasons: winter (n=38), spring (n=65), summer (n=40) and autumn (n=58). Studies have shown that, at an average weight of warm carcass side of 81.20 kg, the highest average values for the weight of round (RW; 10.204 kg), the weight of intermuscular fatty tissue (RINT; 0.478 kg), bone tissue (RBT; 0.850 kg) and muscle tissue (RMT, 7.552 kg) in the round, were established in three-breed crosses of Px (LWxL) genotype compared to other genotypes. The least skin and subcutaneous fatty tissue (RST; 1.269 kg) was recorded in two breed crosses PxL. They had less skin and subcutaneous fatty tissue by 454 g and 467 grams, respectively, compared to two breed crosses (LWxL) and LWx (?LxLW). Research has shown that there is a genotype on a farm that gives more muscle tissue in the round by 1.521 kg [Px (?LWxL): LWx (?LWxL)] with the same weight of warm carcass side, which is a very large difference. With the same average weight of warm carcass side, female animals had higher average weight of the round and yield of muscle tissue compared to male castrated animals. The effect of genotype (P<0.001) on all investigated traits was recorded, also the effect of the season of birth on the skin and subcutaneous fat tissue and on the weight of intermuscular fat in the round was recorded. The effect of sex/gender was significant (P<0.01) on the weight of skin and subcutaneous fat and on the weight of the muscle tissues in the round but no significant effect on other tested properties (P> 0.05) was observed.

scholarly journals Methionine in a protein hydrophobic core drives tight interactions required for assembly of spider silk

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Julia C. Heiby ◽  
Benedikt Goretzki ◽  
Christopher M. Johnson ◽  
Ute A. Hellmich ◽  
Hannes Neuweiler
Keyword(s):  
Amino Acid ◽  
Spider Silk ◽  
Tight Binding ◽  
Pivotal Role ◽  
Speed Limit ◽  
Hydrophobic Core ◽  
Complex Mechanism ◽  
Silk Proteins ◽  
Dragline Silk ◽  
Amino Acid Methionine

Abstract Web spiders connect silk proteins, so-called spidroins, into fibers of extraordinary toughness. The spidroin N-terminal domain (NTD) plays a pivotal role in this process: it polymerizes spidroins through a complex mechanism of dimerization. Here we analyze sequences of spidroin NTDs and find an unusually high content of the amino acid methionine. We simultaneously mutate all methionines present in the hydrophobic core of a spidroin NTD from a nursery web spider’s dragline silk to leucine. The mutated NTD is strongly stabilized and folds at the theoretical speed limit. The structure of the mutant is preserved, yet its ability to dimerize is substantially impaired. We find that side chains of core methionines serve to mobilize the fold, which can thereby access various conformations and adapt the association interface for tight binding. Methionine in a hydrophobic core equips a protein with the capacity to dynamically change shape and thus to optimize its function.

scholarly journals The amino-acid methionine; constitution and synthesis

1928 ◽  
Vol 22 (6) ◽  
pp. 1417-1425 ◽  
Author(s):  
George Barger ◽  
Frederick Philip Coyne
Keyword(s):  
Amino Acid ◽  
Amino Acid Methionine

Fragmentation of the α-Amino Acid Methionine in Field Desorption Mass Spectrometry

1978 ◽  
Vol 33 (7) ◽  
pp. 770-781 ◽  
Author(s):  
J. van der Greef ◽  
N. M. M. Nibbering ◽  
H.-R. Schulten ◽  
W. D. Lehmann
Keyword(s):  
Mass Spectrometry ◽  
Amino Acid ◽  
Desorption Kinetics ◽  
Fragmentation Pattern ◽  
Field Desorption ◽  
Stable Isotope Labelling ◽  
Desorption Mass Spectrometry ◽  
Combined Use ◽  
Field Desorption Mass Spectrometry ◽  
Amino Acid Methionine

AbstractField Desorption Mass Spectrometry, a-Amino Acid Methionine The fragmentation of methionine in field desorption mass spectrometry has been studied. Decomposition mechanisms are described which are based on stable isotope labelling, low and high resolution field desorption, and the application of field desorption kinetics. The combined use of these techniques for the study of some fundamental fragmentations in field desorption is demonstrated successfully. Further, a comparison with the fragmentation pattern of methionine under electron impact, chemical ionization and Curie point pyrolysis is given.

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