Reproductive performance and gestational effort in relation to dietary fatty acids in guinea pigs

Matthias Nemeth; Eva Millesi; Carina Siutz; Karl-Heinz Wagner; Ruth Quint; Bernard Wallner

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Reproductive performance and gestational effort in relation to dietary fatty acids in guinea pigs

机译：与豚鼠膳食脂肪酸有关的生殖性能和妊娠努力

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Background:Dietary saturated (SFAs) and polyunsaturated (PUFAs) fatty acids can highly affect reproductive functions by providing additional energy,modulating the biochemical properties of tissues,and hormone secretions.In precocial mammals such as domestic guinea pigs the offspring is born highly developed.Gestation might be the most critical reproductive period in this species and dietary fatty acids may profoundly influence the gestational effort.We therefore determined the hormonal status at conception,the reproductive success,and body mass changes during gestation in guinea pigs maintained on diets high in PUFAs or SFAs,or a control diet.Results:The diets significantly affected the females' plasma fatty acid status at conception,while cortisol and estrogen levels did not differ among groups.SFA females exhibited a significantly lower body mass and litter size,while the individual birth mass of pups did not differ among groups and a general higher pup mortality rate in larger litters was diminished by PUFAs and SFAs.The gestational effort,determined by a mother's body mass gain during gestation,increased with total bitter mass,whereas this increase was lowest in SFA and highest in PUFA individuals.The mother's body mass after parturition did not differ among groups and was positively affected by the total bitter mass in PUFA females.Conclusions:While SFAs reduce the litter size,but also the gestational effort as a consequence,PUFA supplementation may contribute to an adjustment of energy accumulations to the total litter mass,which may both favor a mother's body condition at parturition and perhaps increase the offspring survival at birth.

机译：背景：饮食中的饱和脂肪酸（SFAs）和多不饱和脂肪酸（PUFAs）通过提供额外的能量，调节组织的生化特性和激素分泌，可以极大地影响生殖功能。在诸如早产豚鼠这样的早熟哺乳动物中，其后代出生高度发达。妊娠可能是该物种最关键的生殖期，饮食中的脂肪酸可能对妊娠努力产生深远影响。因此，我们确定了维持高PUFA饮食的豚鼠在怀孕时的荷尔蒙状况，生殖成功和体重变化。结果：饮食在受孕时显着影响女性的血浆脂肪酸状况，而各组之间的皮质醇和雌激素水平没有差异。SFA女性的体重和产仔数显着降低，而个体幼崽的出生质量在各组之间没有差异，大窝的幼崽死亡率普遍较高rs被PUFA和SFA减少。妊娠努力由母亲在妊娠期间的体重增加决定，总苦味增加，而这种增加在SFA中最低，在PUFA个人中最高。分娩后母亲的体重没有差异结论：虽然SFAs减少了产仔数，但也减少了妊娠的努力，因此补充PUFA可能有助于调节能量积累，从而增加总产仔数。可能在分娩时有利于母亲的身体状况，也可能增加分娩时的后代存活率。

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《畜牧与生物技术杂志(英文版)》 |2017年第3期|613-623|共11页
作者
Matthias Nemeth; Eva Millesi; Carina Siutz; Karl-Heinz Wagner; Ruth Quint; Bernard Wallner;
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Department of Behavioural Biology,University of Vienna,Althanstrasse 14,1090 Vienna,Austria;

Department of Behavioural Biology,University of Vienna,Althanstrasse 14,1090 Vienna,Austria;

Department of Behavioural Biology,University of Vienna,Althanstrasse 14,1090 Vienna,Austria;

Department of Nutritional Sciences,University of Vienna,Althanstrasse 14,1090 Vienna,Austria;

Department of Nutritional Sciences,University of Vienna,Althanstrasse 14,1090 Vienna,Austria;

Department of Behavioural Biology,University of Vienna,Althanstrasse 14,1090 Vienna,Austria;

Department of Anthropology,University of Vienna,Althanstrasse 14,1090 Vienna,Austria;

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Reproductive performance and gestational effort in relation to dietary fatty acids in guinea pigs

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