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Estrous cyclicity of lactating and non-lactating Holsteins and Jerseys during a Pakistani summer


, : Estrous cyclicity of lactating and non-lactating Holsteins and Jerseys during a Pakistani summer. Journal of Dairy Science 75(Supplement 1): 304

36 cows were used in a 2 x 2 factorial arrangement to determine the effects of breed and lactation status on oestrous cyclicity during a Pakistani summer (June until Oct.). Cows were selected from a herd of Holsteins and Jerseys imported from the USA 5 yr earlier. Ambient temp. were highest in June and declined in the ensuing months with the onset of the rainy season. RH increased in July and Aug., then remained stable until the end of the study.

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Related references

Hussain, S.M.; Fuquay, J.W.; Younas, M., 1992: Estrous cyclicity in nonlactating and lactating Holsteins and Jerseys during a Pakistani summer. Data from 36 cows were used in a 2 x 2 factorial arrangement to determine the effects of breed and lactation status on estrous cyclicity during a Pakistani summer (June through October). Cows were selected from a herd of Holsteins and Jerseys impo...

Imtiaz-Hussain, S.; Fuquay, J.; Younas, M., 1992: Estrous cyclicity in nonlactating and lactating Holsteins and Jerseys during a Pakistani summer. Data from 36 cows were used in a 2 x 2 factorial arrangement to determine the effects of breed and lactation status on estrous cyclicity during a Pakistani summer (June through October). Cows were selected from a herd of Holsteins and Jerseys impo...

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