( ( To ( pick ( ( breeding values ) ( ( a producer ) ( should ( ( use ( the ( average ( ovulation ( rate form ) ) ) ) ) ( severa l ) ) ) ) ) ) ) ( ( estrous cycles ) . ) )
(ROOT (S (S (VP (TO To) (VP (VB pick) (NP (NP (VBG breeding) (NNS values)) (SBAR (S (NP (DT a) (NN producer)) (VP (MD should) (VP (VB use) (NP (DT the) (JJ average) (NN ovulation) (NN rate) (NN form)) (NP (JJ severa) (NN l)))))))))) (VP (VBZ estrous) (NP (NNS cycles))) (. .)))
To pick breeding values a producer should use the average ovulation rate form severa l estrous cycles.
(ROOT (S (NP (NNP Ovulation)) (VP (VBZ occurs) (SBAR (IN before) (S (NP (DT the) (NN endometrium)) (VP (VBZ thickens) (PP (IN in) (NP (JJ estrous) (NNS cycles))))))) (. .)))