The effect of strain of Holstein-Friesian cow and feeding system on postpartum ovarian function, animal production and conception rate to first service

Three strains of Holstein-Friesian (HF): high production North American (HP), high durability North American (HD) and New Zealand (NZ) cows were assigned, within strain, to one of three pasture-based feeding systems: (1) the Moorepark (control) system (MP), (2) a high concentrate system (HC), (3) a...

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Veröffentlicht in:	Theriogenology 2005-02, Vol.63 (3), p.950-971
Hauptverfasser:	Horan, B., Mee, J.F., O’Connor, P., Rath, M., Dillon, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal Feed Animals Body Composition Cattle - physiology Conception rate Corpus Luteum - physiology Cow cow feeding dairy cows Dairying - methods feed concentrates Feed system Female female fertility Fertilization Insemination, Artificial - veterinary Lactation Milk - chemistry Milk progesterone Ovarian function Ovary - physiology Ovulation postpartum interval Postpartum Period Pregnancy Progesterone - analysis Reproduction rotational grazing Species Specificity stocking rate Strain strain differences Time Factors
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