Effects of increasing dietary concentrations of specific structured triacylglycerides on performance and nitrogen and energy metabolism in broiler chickens

C.T. Zheng, Henning Jørgensen, Carl-Erik Høy, K. Jakobsen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    1. Specific structured triacylglycerides (STG) containing medium chain fatty acids in sn-1,3 positions and along chain fatty acid in sn-2 position were prepared from rapeseed oil and capric acid (C10:0). 2. A total of 80 female broiler chickens ( Ross 208) were randomly allocated into five dietary treatments as two series of 40 chicks: a basal diet with graded levels of STG of 0, 20, 40, 60 and 80 g/kg diet at the expense of rapeseed oil were fed to the chickens in groups of four. At 12d of age the chickens were placed pair-wise in metabolism cages. The grower period (d 13-36) was divided into four consecutive balance periods each of 6 d. Two 24 h measurements of gas exchange in two open-air circuit respiration chambers were performed during the second and third day of each balance period. 3. During the whole experiment there was a negative effect of the inclusion of STG on average feed intake. However, this only slightly affected average daily weight gain. Feed conversion efficiency improved linearly with the inclusion level of STG. Daily gain adjusted to mean daily feed intake increased linearly with inclusion rate of STG, indicating that the weight gain was affected by both feed intake and the enhancing effect on digestibility of STG. Weight of small intestine and colon decreased with increasing inclusion of STG. 4. Utilisation of dietary protein relative to intake increased while that of retained fat tended to decrease resulting in a decreased utilisation of metabolisable energy (RE/ME) in birds receiving STG. Heat production (HE) was slightly lower in the STG groups. 5. More of the dietary fat was oxidised when more STG was added, although the total amount of fat in the diets was kept constant.
    Original languageEnglish
    JournalBritish Poultry Science
    Volume47
    Issue number2
    Pages (from-to)180-189
    ISSN0007-1668
    DOIs
    Publication statusPublished - 2006

    Cite this

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    title = "Effects of increasing dietary concentrations of specific structured triacylglycerides on performance and nitrogen and energy metabolism in broiler chickens",
    abstract = "1. Specific structured triacylglycerides (STG) containing medium chain fatty acids in sn-1,3 positions and along chain fatty acid in sn-2 position were prepared from rapeseed oil and capric acid (C10:0). 2. A total of 80 female broiler chickens ( Ross 208) were randomly allocated into five dietary treatments as two series of 40 chicks: a basal diet with graded levels of STG of 0, 20, 40, 60 and 80 g/kg diet at the expense of rapeseed oil were fed to the chickens in groups of four. At 12d of age the chickens were placed pair-wise in metabolism cages. The grower period (d 13-36) was divided into four consecutive balance periods each of 6 d. Two 24 h measurements of gas exchange in two open-air circuit respiration chambers were performed during the second and third day of each balance period. 3. During the whole experiment there was a negative effect of the inclusion of STG on average feed intake. However, this only slightly affected average daily weight gain. Feed conversion efficiency improved linearly with the inclusion level of STG. Daily gain adjusted to mean daily feed intake increased linearly with inclusion rate of STG, indicating that the weight gain was affected by both feed intake and the enhancing effect on digestibility of STG. Weight of small intestine and colon decreased with increasing inclusion of STG. 4. Utilisation of dietary protein relative to intake increased while that of retained fat tended to decrease resulting in a decreased utilisation of metabolisable energy (RE/ME) in birds receiving STG. Heat production (HE) was slightly lower in the STG groups. 5. More of the dietary fat was oxidised when more STG was added, although the total amount of fat in the diets was kept constant.",
    author = "C.T. Zheng and Henning J{\o}rgensen and Carl-Erik H{\o}y and K. Jakobsen",
    year = "2006",
    doi = "10.1080/00071660600610930",
    language = "English",
    volume = "47",
    pages = "180--189",
    journal = "British Poultry Science",
    issn = "0007-1668",
    publisher = "CRC Press/Balkema",
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    }

    Effects of increasing dietary concentrations of specific structured triacylglycerides on performance and nitrogen and energy metabolism in broiler chickens. / Zheng, C.T.; Jørgensen, Henning; Høy, Carl-Erik; Jakobsen, K.

    In: British Poultry Science, Vol. 47, No. 2, 2006, p. 180-189.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - Effects of increasing dietary concentrations of specific structured triacylglycerides on performance and nitrogen and energy metabolism in broiler chickens

    AU - Zheng, C.T.

    AU - Jørgensen, Henning

    AU - Høy, Carl-Erik

    AU - Jakobsen, K.

    PY - 2006

    Y1 - 2006

    N2 - 1. Specific structured triacylglycerides (STG) containing medium chain fatty acids in sn-1,3 positions and along chain fatty acid in sn-2 position were prepared from rapeseed oil and capric acid (C10:0). 2. A total of 80 female broiler chickens ( Ross 208) were randomly allocated into five dietary treatments as two series of 40 chicks: a basal diet with graded levels of STG of 0, 20, 40, 60 and 80 g/kg diet at the expense of rapeseed oil were fed to the chickens in groups of four. At 12d of age the chickens were placed pair-wise in metabolism cages. The grower period (d 13-36) was divided into four consecutive balance periods each of 6 d. Two 24 h measurements of gas exchange in two open-air circuit respiration chambers were performed during the second and third day of each balance period. 3. During the whole experiment there was a negative effect of the inclusion of STG on average feed intake. However, this only slightly affected average daily weight gain. Feed conversion efficiency improved linearly with the inclusion level of STG. Daily gain adjusted to mean daily feed intake increased linearly with inclusion rate of STG, indicating that the weight gain was affected by both feed intake and the enhancing effect on digestibility of STG. Weight of small intestine and colon decreased with increasing inclusion of STG. 4. Utilisation of dietary protein relative to intake increased while that of retained fat tended to decrease resulting in a decreased utilisation of metabolisable energy (RE/ME) in birds receiving STG. Heat production (HE) was slightly lower in the STG groups. 5. More of the dietary fat was oxidised when more STG was added, although the total amount of fat in the diets was kept constant.

    AB - 1. Specific structured triacylglycerides (STG) containing medium chain fatty acids in sn-1,3 positions and along chain fatty acid in sn-2 position were prepared from rapeseed oil and capric acid (C10:0). 2. A total of 80 female broiler chickens ( Ross 208) were randomly allocated into five dietary treatments as two series of 40 chicks: a basal diet with graded levels of STG of 0, 20, 40, 60 and 80 g/kg diet at the expense of rapeseed oil were fed to the chickens in groups of four. At 12d of age the chickens were placed pair-wise in metabolism cages. The grower period (d 13-36) was divided into four consecutive balance periods each of 6 d. Two 24 h measurements of gas exchange in two open-air circuit respiration chambers were performed during the second and third day of each balance period. 3. During the whole experiment there was a negative effect of the inclusion of STG on average feed intake. However, this only slightly affected average daily weight gain. Feed conversion efficiency improved linearly with the inclusion level of STG. Daily gain adjusted to mean daily feed intake increased linearly with inclusion rate of STG, indicating that the weight gain was affected by both feed intake and the enhancing effect on digestibility of STG. Weight of small intestine and colon decreased with increasing inclusion of STG. 4. Utilisation of dietary protein relative to intake increased while that of retained fat tended to decrease resulting in a decreased utilisation of metabolisable energy (RE/ME) in birds receiving STG. Heat production (HE) was slightly lower in the STG groups. 5. More of the dietary fat was oxidised when more STG was added, although the total amount of fat in the diets was kept constant.

    U2 - 10.1080/00071660600610930

    DO - 10.1080/00071660600610930

    M3 - Journal article

    VL - 47

    SP - 180

    EP - 189

    JO - British Poultry Science

    JF - British Poultry Science

    SN - 0007-1668

    IS - 2

    ER -