Application of dietary fish oil in dairy cow reproduction

Abstract

Feed fats are commonly used as a component of high-yielding cow diet rations. Many studies have been conducted on the effects of fat supplementation on metabolism, milk composition, and improvements in dairy cow reproduction. The positive effects on fat (vegetable oil) and energy supplementation on improvements in reproduction are well documented. Consumption of polyunsaturated fatty acids (PUFAs), including n-3 acids, in appropriate feed doses improves fertility of dairy cows. A fat source with high levels of acids such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) is marine oil, especially fish and algae. By modification of cow rations, EPA and DHA can be utilized to reduce synthesis of PGF 2α in the endometrium, which can prevent luteolysis of the corpus luteum during early pregnancy. The PUFAs also may have a direct impact on key genes and their proteins that regulate biochemical processes and pathways between the corpus luteum, the uterus, and the embryo. The effect of n-3 fatty acids on the survival of embryos is not yet clearly defined.

Effect of Dietary Omega-3 Poli Unsaturated Fatty Acids During the Flushing Period on Reproductive Performance of Karayaka Ewes

“…İt is thought that omega 3 polyunsaturated fatty acids improved the synthesis of prostaglandins by acting on the endocrine system and improve fertility functions by affecting positively on the development of eggs and embryos. This study results in agreement with Zwyrzykowska and Kupczyñskı (2014) and Ambrose et al (2006). In addition, results of Hutchinsona et al (2012) in the Afshari sheep were similar to those of this study.…”

“…Although the addition of fatty acids to rations affects fertility in the positive direction in ruminant, this mechanism has not yet been clearly identified (Hutchinsona et al, 2012). It has also been reported that knowledge of the effects of by pass omega-3 fatty acids on reproductive performance in sheep during the flushing stage is very limited (Zwyrzykowska and Kupczyñskı, 2014). On the other hand, gonadotropins are mainly used for ovarian stimulation in sheep.…”

Dietary Supplementation with Linseed Oil Ethyl Esters Improves Sexual Behavior and Chosen Seminal Parameters in Porcine Species

“…It has a positive effect on the quality of male semen [ 8 , 9 , 10 ]. It can elongate and add new double bonds and thus convert into eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) ( Figure 1 ) [ 16 ].…”