Creatine monohydrate supplemented in swine finishing diets and fresh pork quality: III. Evaluating the cumulative effect of creatine monohydrate and alpha-lipoic acid1,2

The effects of the carbohydrate composition of finishing diet (fed from 80 to 107 kg of body weight) and the length of pre-slaughter fasting on pork quality were studied in a 2 × 2 factorial experiment with 80 crossbred pigs. The control finishing diet was based on barley and soybean meal, and the fibrous finishing diet was based on barley, barley fibre, faba beans, and rapeseed cake. These diets contained 465 and 362 g starch and 177 and 250 g dietary fibre per kg, respectively. The fasting times of 25 and 41 h were obtained by giving the pigs their last meal at different times. Longer fasting lowered the glycolytic potential of the longissimus lumborum muscle (P = 0.01), whereas the finishing diet had no effect. Different muscles responded differently to the treatments. Longer fasting increased the ultimate pH of the semimembranosus muscle (P = 0.02), but did not affect that of the longissimus lumborum and semispinalis capitis muscles. The finishing diets did not affect the ultimate pH of the investigated muscles. A diet × fasting time interaction was seen in the lightness of the semimembranosus muscle (P = 0.05). The fibrous diet resulted in darker meat than the control diet did in pigs that were fasted for 25 h (P < 0.05). Longer fasting darkened the meat colour in pigs fed the fibrous diet (P < 0.05) but not in those fed the control diet. The meat from the semispinalis capitis muscle was darker in pigs fed the fibrous than those fed the control diet (P = 0.04). The treatments did not affect the colour of the longissimus lumborum muscle. Longer fasting decreased drip loss from the meat of pigs fed the control diet (P < 0.05). The eating quality of the pork was not influenced by the finishing diets or the fasting time. The pigs also grew equally fast on both finishing diets. In conclusion, a moderate alteration in the carbohydrate composition of a finishing diet or longer pre-slaughter fasting can have some effects on pork quality in crossbred pigs, but these effects vary in different muscles.;

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Dietary creatine monohydrate has no effect on pork quality of Danish crossbred pigs

Meat Science ◽

10.1016/j.meatsci.2006.10.023 ◽

2007 ◽

Vol 76 (1) ◽

pp. 160-164 ◽

Cited By ~ 8

Author(s):

K. Rosenvold ◽

H.C. Bertram ◽

J.F. Young

Keyword(s):

Creatine Monohydrate ◽

Pork Quality ◽

Crossbred Pigs

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The effect of ractopamine supplementation at 5 ppm of swine finishing diets on growth performance, carcass composition and ultimate pork quality

Canadian Journal of Animal Science ◽

10.4141/cjas07152 ◽

2009 ◽

Vol 89 (1) ◽

pp. 53-66 ◽

Cited By ~ 29

Author(s):

J F Patience ◽

P. Shand ◽

Z. Pietrasik ◽

J. Merrill ◽

G. Vessie ◽

...

Keyword(s):

Growth Performance ◽

Control Diet ◽

Carcass Composition ◽

Eating Quality ◽

Pork Quality ◽

Finishing Pigs ◽

Minimal Impact ◽

Finishing Diets ◽

Overall Acceptability ◽

Beta Adrenergic Agonist

Five hundred thirty-six finishing pigs were placed on experiment for an average of 26 d prior to slaughter, to determine the effects of 5 mg ractopamine hydrochloride (RAC) per kg of diet on growth performance, carcass composition and the eating quality of pork. Treatments included a control diet similar to a western Canadian commercial finishing diet and a treatment diet containing 5 mg RAC kg-1 with elevated amino acids, vitamins and minerals. The experiment started when average animal weight was 86 kg; pigs were marketed at an average liveweight of 118 kg. Two pigs were selected from each of 32 pens in week 4 of the experiment, for detailed carcass and meat quality evaluation, providing 16 pigs per gender per treatment. RAC-fed pigs reached market weight 4 d sooner (P < 0.05), grew 13 % faster (P < 0.05) and had 13% better feed efficiency (P < 0.05) than the controls. RAC-fed pigs also had 1 mm less backfat and 2.5 mm thicker loins (P < 0.05). Ultimate pH, purge loss and visual colour scores were unaffected by treatment but RAC-fed pigs had lower CIE a* and b* measurements (P < 0.05). RAC had no effect on juiciness, flavour, saltiness or overall acceptability (P > 0.10), but increased Warner-Bratzler shear force and reduced taste panel tenderness slightly (P < 0.05). The inclusion of 5 mg RAC kg-1 in a commercial finishing diet will increase the rate and efficiency of gain and improve carcass composition. Minimal impact on pork quality can also be expected with the use of RAC fed at this level. Key words: Ractopamine, swine, carcass composition, pork quality, beta-adrenergic agonist

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The influence of betaine and creatine monohydrate supplementation on chemical composition, oxidative stability and pork quality in RYR1 heterozygous pigs

Journal of Central European Agriculture ◽

10.5513/jcea01/22.4.3229 ◽

2021 ◽

Vol 22 (4) ◽

pp. 692-700

Author(s):

Ivan Bahelka ◽

Rudolf Lahučký ◽

Ulrich Kuechenmeister

Keyword(s):

Chemical Composition ◽

Oxidative Stability ◽

Creatine Monohydrate ◽

Pork Quality

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Multilocus Analysis of Genetic Susceptibility to Myocardial Infarction in Russians: Replication Study

Acta Naturae ◽

10.32607/20758251-2017-9-4-74-83 ◽

2017 ◽

Vol 9 (4) ◽

pp. 74-83

Author(s):

N. G. Kukava ◽

B. V. Titov ◽

G. J. Osmak ◽

N. A. Matveeva ◽

O. G. Kulakova ◽

...

Keyword(s):

Myocardial Infarction ◽

Genetic Markers ◽

Prognostic Significance ◽

Cumulative Effect ◽

Mthfr Gene ◽

Composite Model ◽

Replication Study ◽

Epistatic Interactions ◽

Multilocus Analysis ◽

Lipid Metabolism Genes

In search of genetic markers of myocardial infarction (MI) risk, which have prognostic significance for Russians, we performed a replication study of MI association with genetic variants of PCSK9 (rs562556), APOE (epsilon polymorphism, rs7412 and rs429358), LPL (rs320), MTHFR (rs1801133), eNOS (rs2070744), and the 9p21 region (rs1333049) in 405 patients with MI and 198 controls. Significant MI association was observed with variants of the lipid metabolism genes (PCSK9, APOE and LPL), and of eNOS. The SNPs in the MTHFR gene and the 9p21 region were not significantly associated with MI one by one but were included in several different MI-associated allelic combinations identified by multilocus analysis. Since we have not revealed nonlinear epistatic interactions between the components of the identified combinations, we postulate that the cumulative effect of genes that form a combination arises from the summation of their small independent contributions. The prognostic significance of the additive composite model built from the PCSK9, APOE, LPL, and eNOS genes as genetic markers was assessed using ROC analysis. After we included these markers in the previously published composite model of individual genetic risk of MI, the prognostic efficacy in our sample reached AUC = 0.676. However, the results obtained in this study certainly need to be replicated in an independent sample of Russians.

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Fertiliser evenness - losses and costs: A study on the economic benefits of uniform applications of fertiliser

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1999.61.2337 ◽

1999 ◽

pp. 215-220 ◽

Cited By ~ 2

Author(s):

R. Horrell ◽

A.K. Metherell ◽

S. Ford ◽

C. Doscher

Keyword(s):

Crop Yields ◽

Cumulative Effect ◽

Economic Loss ◽

Economic Benefits ◽

Significant Loss ◽

Economic Losses ◽

Financial Return ◽

Spread Pattern ◽

Fertiliser Application ◽

Seed Crops

Over two million tonnes of fertiliser are applied to New Zealand pastures and crops annually and there is an increasing desire by farmers to ensure that the best possible economic return is gained from this investment. Spreading distribution measurements undertaken by Lincoln Ventures Ltd (LVL) have identified large variations in the evenness of fertiliser application by spreading machines which could lead to a failure to achieve optimum potential in some crop yields and to significant associated economic losses. To quantify these losses, a study was undertaken to calculate the effect of uneven fertiliser application on crop yield. From LVL's spreader database, spread patterns from many machines were categorised by spread pattern type and by coefficient of variation (CV). These patterns were then used to calculate yield losses when they were combined with the response data from five representative cropping and pastoral situations. Nitrogen fertiliser on ryegrass seed crops shows significant production losses at a spread pattern CV between 30% and 40%. For P and S on pasture, the cumulative effect of uneven spreading accrues, until there is significant economic loss occurring by year 3 for both the Waikato dairy and Southland sheep and beef systems at CV values between 30% and 40%. For nitrogen on pasture, significant loss in a dairy system occurs at a CV of approximately 40% whereas for a sheep and beef system it is at a CV of 50%, where the financial return from nitrogen application has been calculated at the average gross revenue of the farming system. The conclusion of this study is that the current Spreadmark standards are a satisfactory basis for defining the evenness requirements of fertiliser applications in most circumstances. On the basis of Spreadmark testing to date, more than 50% of the national commercial spreading fleet fails to meet the standard for nitrogenous fertilisers and 40% fails to meet the standard for phosphatic fertilisers.Keywords: aerial spreading, crop response, economic loss, fertiliser, ground spreading, striping, uneven application, uneven spreading, yield loss

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