Sentence:  Reduces losses from stomach , hookworm , and nodular worms by interfering with reproduction of the female worm by reducing the number of eggs laid and essentially rendering all laid <WSD>eggs</WSD> sterile . 
Meaning of the word marked with <WSD> tags:  animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes; especially the thin-shelled reproductive body laid by e.g. female birds