scholarly journals Beneficial effects of a high fibre diet on oocyte maturity and embryo survival in gilts

Reproduction ◽  
2007 ◽  
Vol 133 (2) ◽  
pp. 433-439 ◽  
Author(s):  
E M Ferguson ◽  
J Slevin ◽  
M G Hunter ◽  
S A Edwards ◽  
C J Ashworth

The present study examined the effects of feeding gilts a high fibre diet from the third post-pubertal oestrus until either day 19 of the same cycle or insemination at the following oestrus on oocyte maturity, embryo survival and associated changes in reproductive hormone concentrations. Gilts fed with the high fibre diet had lower circulating oestradiol concentrations on days 17, 18 and 19 of the cycle and increased LH pulse frequency on day 18. More oocytes recovered on day 19 from gilts receiving the high fibre diet were at metaphase II after 46-h culture in medium containing 10% of their own follicular fluid, despite fewer large (>7 mm) follicles in these gilts when compared with control animals. There was no effect of diet on ovulation rate, corpora lutea size or progesterone concentrations on days 10–12 after insemination, but embryo survival on days 27–29 after insemination was higher in gilts that received the high fibre diet. This study demonstrates that a high fibre diet that increases embryo survival also improves oocyte maturity and provides information on endocrine correlates that may shed light on underlying mechanisms.

2013 ◽  
Vol 25 (8) ◽  
pp. 1216 ◽  
Author(s):  
A. C. Weaver ◽  
J. M. Kelly ◽  
K. L. Kind ◽  
K. L. Gatford ◽  
D. J. Kennaway ◽  
...  

Inclusion of high levels of the high-fibre ingredient sugar-beet pulp in pre-mating diets has been shown to increase gonadotrophin concentrations and improve oocyte quality in nulliparous pigs (gilts). This study evaluated the effects of two alternative fibre sources on reproductive performance in gilts. Gilts received one of three diets from 3 weeks before puberty stimulation until Day 19 of the first oestrous cycle: control (39 g kg–1 fibre), bran (500 g kg–1 wheat bran, 65 g kg–1 fibre) or lupin (350 g kg–1 lupin, 118 g kg–1 crude fibre). Diet did not affect circulating LH concentrations or ovarian follicle size. However, a higher percentage of oocytes collected from lupin-supplemented gilts reached metaphase II in vitro compared with those collected from bran-fed or control gilts (89 ± 5% versus 72 ± 5% and 66 ± 5%, respectively; P < 0.05). Furthermore, in a second experiment, gilts fed the same lupin-based diet before mating had improved embryo survival (92 ± 5%) on Day 28 after mating compared with control gilts (76 ± 4%; P < 0.05). Therefore, feeding a high-fibre diet before mating can improve oocyte quality in gilts without changes in circulating LH, but this effect is dependent on the fibre source.


2004 ◽  
Vol 31 ◽  
pp. 175-179 ◽  
Author(s):  
E.M. Ferguson ◽  
C.J. Ashworth ◽  
M.G. Hunter ◽  
P. Penny ◽  
J. Slevin ◽  
...  

AbstractThe feeding of high fibre diets to sows prior to ovulation has been shown to have beneficial effects on embryo viability, leading to a possible increase in piglet litter size. This trial was conducted to look at the effect of feeding sows a high fibre diet from mid lactation until breeding on subsequent litter size on a commercially run farm. The sows used were either Large White or Large White x Landrace in genotype and ranged from parity 1 to 7. The sows were allocated to receive either a cereal-based control diet (C), or a high fibre diet (HF) of similar specification but containing unmolassed sugar beet pulp (USBP) at a 20% inclusion rate during lactation and 40% from weaning to oestrus. The diets were fed from day 11 of lactation until oestrus. The sows were inseminated at oestrus and then fed a standard gestation diet until farrowing. The trial was conducted over a 3-month period and in total 198 sows received the HF diet with the rest of the sows over the 3-month period acting as controls (496) on the cereal-based diet. The effect of the diet on total litter size and the number of piglets born alive per sow was analysed in a general linear model (Minitab release 12.1). The combined results for both breed types showed that sows fed the HF diet had a significantly higher number of piglets born (12.37 ± 0.27 versus 11.41 ± 0.26, P<0.01) and a higher number of piglets born alive (11.47 ± 0.26 versus 10.85± 0.26, P<0.01) compared to 130 control fed sows matched for farrowing week. The difference in piglet litter size was still apparent when all the control sows farrowing over the 3 month trial period were included in the statistical analysis, with values of 12.47 ± 0.27 versus 11.79 ± 0.15 (P<0.05) for total number of piglets born and 11.77 ± 0.26 versus 11.16 ± 0.14 (P<0.05) for the number of piglets born alive for the HF and control diet respectively. Based on the results from this trial and previous studies, feeding a diet with a high content of USBP during late lactation and prior to insemination can increase the total number of piglets in the litter and the number of piglets born alive. This effect is less marked in crossbred sows with high baseline performance.


BMC Biology ◽  
2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Chee Kin Then ◽  
Salome Paillas ◽  
Xuedan Wang ◽  
Alix Hampson ◽  
Anne E. Kiltie

2005 ◽  
Vol 11 (2) ◽  
pp. 136-145
Author(s):  
Jo Paddison ◽  
Hemi Heta ◽  
Ross Flett

Understanding the distribution of Mãori across stages of health behaviour change (precontemplation, contemplation, preparation, action, maintenance) may inform the development of public health programs. In a replication and extension of a study by Nigg et al. (1999) we described the distribution of 73 Mãori male questionnaire respondents (age 18 to 59 years) across these stages for 8 healthy behaviours (avoiding dietary fat, eating fibre, reducing weight, regularly exercising, reducing stress, reducing sun exposure, using sunblock, and conducting cancer self-examinations). Respondents were also asked to rate their general health, health worries, and health locus of control. Evidence found of a continuum of change for ‘ignoring’, to ‘thinking about1 to ‘performing’ healthy behaviour provides moderate support for the idea that behaviour change is not an all-or-nothing event. There were no significant age effects. Respondents who rated their health more positively were more likely to report using sunblock, exercising regularly, and eating a high fibre diet. Respondents who felt they had more control over their health were more likely to eat a diet high in fibre. Eating a high fibre diet, exercising and managing stress were most strongly associated with the other health behaviours which may illustrate the concept of gateway behaviours proposed by Nigg et al. (1999).


2002 ◽  
Vol 43 (2) ◽  
pp. 67-73 ◽  
Author(s):  
P. A. GRAHAM ◽  
I. E. MASKELL ◽  
J. M. RAWLINGS ◽  
A. S. NASH ◽  
P. J. MARKWELL

BMJ ◽  
1987 ◽  
Vol 294 (6568) ◽  
pp. 333-336 ◽  
Author(s):  
J Edington ◽  
M Geekie ◽  
R Carter ◽  
L Benfield ◽  
K Fisher ◽  
...  

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