Experiments have also demonstrated that cows with a BCS of 4 or lower had pregnancy rates of 61%, in contrast to 90% for those cows that calved with a BCS of 5 or greater (Selk et al. 1986). Females with restricted intake of energy have decreased levels of LH secretion, which is the hormone that signals ovulation.
The ingredients listed on the Murphy Oil Soap MSDS are potassium soap of vegetable oil, sodium EDTA (a preservative), water, fragrance, propylene glycol, and unspecified surfactants. None are listed as hazardous, but I wouldnât call this completely natural. I have no reason to believe that the fragrance is natural.
(Exxon Valdez Oil Spill Trustee Council) Assessing the toxicity of oil is a tricky business. The main difficulty is that oil is a mixture of many different chemicals, and no two oils are the same. Proportions of chemicals vary even within a single category of oil, like crude oil or diesel oil. For example, Arabian crude oil, Louisiana crude oil, and Alaska North Slope crude oil represent very different mixtures that will behave differently in the environment and have different toxic effects to exposed organisms. It was Alaska North Slope crude oil that spilled from the Exxon Valdez into Prince William Sound.