کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8981229 | 1108147 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mammary Lipid Metabolism and Milk Fatty Acid Secretion in Alpine Goats Fed Vegetable Lipids
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کلمات کلیدی
OSOSCDG3PDHG6PDHFASLPLACCFLSstearoyl-CoA desaturaseLipogenic enzyme - آنزیم لیپوژنیکmalic enzyme - آنزیم مالیکacetyl-CoA carboxylase - استیل کروکسی سیلازFatty acid - اسید چربPolyunsaturated fatty acids - اسید چرب اشباع نشدهfatty acid synthase - اسید چرب سنتازPUFA - اسید چرب چند غیراشباعMilk fatty acids - اسیدهای چرب شیرlactating goat - بز بزLipoprotein lipase - لیپو پروتئین لیپازLipid supplement - مکمل لیپیدglucose-6-phosphate dehydrogenase - گلوکز 6-فسفات دهیدروژنازglycerol-3-phosphate dehydrogenase - گلیسرول 3-فسفات دهیدروژناز
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Mammary Lipid Metabolism and Milk Fatty Acid Secretion in Alpine Goats Fed Vegetable Lipids Mammary Lipid Metabolism and Milk Fatty Acid Secretion in Alpine Goats Fed Vegetable Lipids](/preview/png/8981229.png)
چکیده انگلیسی
Fourteen Alpine goats at midlactation were fed a diet of hay and concentrate (55:45), without (control) or with formaldehyde-treated linseed (FLS) or oleic sunflower oil (OSO) at 11.2 or 3.5% of dry matter intake, respectively, in a 3Â ÃÂ 3 Latin Square design with three 3-wk periods. Milk yield was lower in goats fed FLS than control or OSO (2.13 vs. 2.32 kg/d). Milk fat content was higher with FLS or OSO than control (40.8 vs. 33.8 g/kg). Formaldehyde-treated linseed and OSO caused a significant decrease (23 and 18%, respectively) of C10 to C17 fatty acids secretion compared with control. The secretion of cis-9 C18:1 and cis-9, trans-11 C18:2 were increased 1.44- and 1.54-fold for FLS and 1.78- and 1.36-fold for OSO, compared with control. The C18:3 (n-3) secretion was increased 2.61-fold with FLS compared with control. Milk cis-9 C14:1/C14:0, cis-9 C16:1/C16:0, and cis-9 C18:1/C18:0 ratios decreased with the supplemented diets compared with control. Mammary stearoyl-CoA desaturase mRNA and activity were decreased by the lipid supplements, whereas no significant change was observed for acetyl-CoA carboxylase and fatty acid synthase. The activities of glucose-6-phosphate dehydrogenase, malic enzyme, and glycerol-3-phosphate dehydrogenase were not affected by the lipid supplements. Mammary lipoprotein lipase mRNA increased with OSO, whereas lipoprotein lipase activity tended to decrease with FLS compared with control. Milk lipoprotein lipase activity sharply decreased with lipid supplement (by 59 and 71%, for FLS and OSO, respectively). The changes in milk fatty acid profile due to FLS and OSO supplements were partly related to changes in the levels of mammary enzyme activities or mRNA.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dairy Science - Volume 88, Issue 4, April 2005, Pages 1478-1489
Journal: Journal of Dairy Science - Volume 88, Issue 4, April 2005, Pages 1478-1489
نویسندگان
L. Bernard, J. Rouel, C. Leroux, A. Ferlay, Y. Faulconnier, P. Legrand, Y. Chilliard,