Fat and fatty acid digestibility of different fat sources in growing pigs

Duran-Montgé, P.; Lizardo, R.; Torrallardona, D.; Esteve‐García, E.

doi:10.1016/j.livsci.2007.01.067

Cited by 54 publications

(37 citation statements)

References 8 publications

(7 reference statements)

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“…It is well known that the digestibility of unsaturated fatty acid is practically complete even at the ileum level in pigs (Jorgensen and Fernandez, 2000;Duran-Montge et al, 2007). On the other hand, it could be expected that an improvement in crude fat digestibility should occur in pigs as a result of increasing the percentage of dietary crude fat (Just, 1989).…”

Section: Resultsmentioning

confidence: 99%

The effect of breed and dietary level of avocado fat on the N and energy balance in young pigs

Grageola¹,

Sangines²,

Díaz³

et al. 2010

J. Anim. Feed Sci.

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The effect of breed and dietary avocado level on the total apparent digestibility (RAD) and balance of nitrogen (N) energy, in young pigs, was studied. Four Pelón Mexicano (PM) and four Yorkshire × Landrace (Y×L) barrow male pigs (39.2 kg average inital liveweight) distributed in two groups according to a change over design in a 2×2 factorial arrangement (breed and diet) were used. The pigs received on a pair feeding basis (0.10 kg DM/kg W 0.75 per day), the experimental diets. The diets were formulated to contain 30 or 150 g crude fat by partial replacement of the maize/soyabean meal diet by avocado (Persea americana Mill.) fresh pulp. The RAD of crude fat was 73.8 and 71.5% and that of N was 83.4 and 82.8 % in PM and Y×L pigs, respectively. There was no significant effect (P>0.10) of crude fat level on RAD of N and energy. N and energy balance significantly (P<0.05) favoured Y×L as compared with PM pigs. In conclusion, the poor N retention of PM pigs could be related to body composition of this local, non improved genotype. The use of avocado for feeding pigs, PM included, should determine a high digestibility of the crude fat fraction and at the same time a considerable deterioration of N retention, probably due to an unbalanced composition of amino acids. The level of avocado pulp inclusion in the diet of the pig should be involved in these circumstances.

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Section: Resultsmentioning

confidence: 99%

The effect of breed and dietary level of avocado fat on the N and energy balance in young pigs

Grageola¹,

Sangines²,

Díaz³

et al. 2010

J. Anim. Feed Sci.

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“…Oils and fats were for food or feed quality grade. The fat-supplemented diets were formulated in order to supply equal amounts of digestible fat (as calculated by Duran-Montgé et al (2007)). …”

Section: Animals and Dietsmentioning

confidence: 99%

Fat metabolism is regulated by altered gene expression of lipogenic enzymes and regulatory factors in liver and adipose tissue but not in semimembranosus muscle of pigs during the fattening period

Duran-Montgé

Theil

Lauridsen

et al. 2009

Animal

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It has been shown previously that lipid metabolism is regulated by fatty acids (FA) and that thyroid hormones are important regulators of energy metabolism. The effects of weight, dietary fat level and dietary FA profile on thyroid hormone levels and expression of lipogenic genes and tissue FA composition were studied. Sixty-one crossbred gilts weighing 62 6 5.2 kg BW average were either slaughtered at the beginning of the trial (n 5 5) or fed one of seven diets (n 5 8 pigs per diet): a semisynthetic diet formulated to contain a very low level of fat (NF) and six diets based on barley-soybean meal supplemented with approximately 10% fat of different origin and slaughtered at 100 kg BW. The supplemental fats were tallow, high-oleic sunflower oil, sunflower oil (SFO), linseed oil, fat blend (55% tallow, 35% sunflower oil, 10% linseed oil) and fish oil blend (40% fish oil, 60% linseed oil). In general, the dietary FA profiles altered the FA composition of liver, semimembranosus muscle and adipose tissues. Pigs fed the NF diet had the highest free and total triiodothyronine (T3) values followed by pigs fed SFO. Total T3 levels were higher in pigs at 60 kg than in pigs at 100 kg. Correlations between thyroid hormones and genes encoding enzymes of fat synthesis in adipose tissue (acetyl CoA carboxylase (ACACA), fatty acid synthase and stearoyl CoA desaturase (SCD)) and the large differences in expression of lipogenic genes at different weights (60 and 100 kg BW), suggest a role for thyroid hormones and for T3, in particular, in regulating whole animal fat metabolism, with effects brought about by altered expression of lipogenic genes. Liver sterol receptor element binding protein-1 (SREBP1) mRNA content was affected by dietary treatment ( P , 0.001) and was correlated with ACACA and SCD, whereas adipose tissue SREBP1 was not correlated with the mRNA abundance of any lipogenic enzyme. Weight and tissue factors showed greater influence on mRNA abundance of genes related with lipid metabolism than diet and tissue FA composition. In the pig, FA synthesis appear to be of greater magnitude in adipose tissue than in the liver as suggested by the higher expression of lipogenic genes in adipose tissue.

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“…The FO diet was intended to have a high content in long PUFA. The amount of fat included in each diet was slightly different in order to supply equal amounts of digestible fat based on lipid digestibility results observed previously (Duran-Montgé et al, 2007). Analysis Diets were analysed for dry matter (DM) content, crude protein (CP), energy, ash and FA.…”

Section: Animals and Dietsmentioning

confidence: 99%

Tissue fatty acid composition of pigs fed different fat sources

Duran-Montgé

Realini

Barroeta

et al. 2008

Animal

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Dietary fat influences the physico-chemical properties of meat, and fatty acid (FA) composition may have implications on human health. The objectives of the experiment were to study tissue FA partitioning and the effect of dietary fat source on tissue FA composition. Seventy crossbred gilts (61.8 6 5.2 kg BW average) were fed one of seven treatments: a diet containing a very low level of fat (no fat (NF)) and six fat-supplemented diets (10%: tallow (T), high-oleic sunflower oil (HOSF), sunflower oil (SFO), linseed oil (LO), fat blend (FB: 55% tallow, 35% SFO, 10% LO) and fish oil blend (FO: 40% fish oil, 60% LO). Differential tissue FA depositions were observed, with flare fat being the most saturated, followed by intermuscular, and subcutaneous being the least saturated. Monounsaturated fatty acid (MUFA) deposition showed an opposite tissue pattern. Subcutaneous fat showed the highest MUFAs, intermuscular fat showed intermediate values and flare fat showed the lowest MUFAs. Intramuscular polyunsaturated fatty acid (PUFA) content was less susceptible to dietary treatment modifications compared with other depots. Significant tissue FA modifications were observed due to dietary treatments, mainly in diets rich in PUFA. The saturated fatty acids (SFA) were high in NF-fed and low in HOSF-fed animals, MUFA were high in HOSF-fed and low in SFO-, LO-and FO-fed animals, while PUFA were high in SFO-and LO-fed and low in HOSF-, T-and NF-fed animals. Pigs fed LO and FB showed detectable levels of EPA, which depended on the linolenic content of the diet. The only effective way to increase tissue DHA contents was to add DHA in the diet through FO feeding. Araquidonic acid was high in SFO diets and low in LO and FB diets, and also high in intramuscular fat compared with other tissues. EPA and DHA were also high in intramuscular fat compared with other fat depots. The deposition of oleic and linoleic acids depended on the composition of dietary fat, as their deposition varied between diets, even at similar levels of intake of each FA. The NF diet resulted in the greatest proportion of SFAs (palmitic and stearic) of all treatments tested. SFAs were less susceptible to modification than MUFA in response to the different PUFA levels supplemented in the diet. T resulted in less fat deposition in some of the fat depots and more in others, suggesting that T could partition fat differently among fat depots.

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Fat and fatty acid digestibility of different fat sources in growing pigs

Cited by 54 publications

References 8 publications

The effect of breed and dietary level of avocado fat on the N and energy balance in young pigs

The effect of breed and dietary level of avocado fat on the N and energy balance in young pigs

Fat metabolism is regulated by altered gene expression of lipogenic enzymes and regulatory factors in liver and adipose tissue but not in semimembranosus muscle of pigs during the fattening period

Tissue fatty acid composition of pigs fed different fat sources

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