Abstract
Impact of contrasting fish oil concentrations in the diet on ovine embryo development <i>in vivo</i> and of corresponding diet-specific derivative sera during <i>in vitro</i> culture
Highlights
The quality of oocytes and early cleavage-stage embryos is important in the successful establishment of pregnancy and the birth of viable neonates
Supplementary fish oil tended to suppress the rate of embryo development and extent of blastocyst expansion and did reduce cell number (P
Dietary fish oil supplementation had no effect on the superovulatory response of ewes or their embryo numbers
Summary
The quality of oocytes and early cleavage-stage embryos is important in the successful establishment of pregnancy and the birth of viable neonates. This holds true for natural pregnancies, those established following multiple ovulation and embryo transfer, and those involving the use of in vitro embryo production techniques. In all cases feeding level and diet composition can have effects on the oocyte that influence early embryo development. These effects can, differ between the embryo production techniques (Robinson et al, 2006). Using non-lactating beef x dairy heifers Adamiak et al (2005) found that while high plane feeding reduced the quality of oocytes aspirated from animals in good body condition it increased it among those from heifers in poor condition
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