@conference {40991,
	title = {Reproductive performance of Holstein-Friesian cows differing genetically in live weight},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {58},
	year = {1998},
	month = {Jan},
	pages = {73-75},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The reproductive performance of two genetic lines of Holstein-Friesian cows bred for heavy (H) or light (L) mature live weight (LW) was evaluated from 1992 to 1997. The interval calving to ovulation was shorter (P<0.05) for H cows (28 {\textpm} 3.2 days) than for L cows (L: 31 {\textpm} 2.5 days), but the difference between the lines in the interval calving-first heat was not significant (H: 50 days; L: 43 days). However, in the cows older than 2 years old, the H cows had a lower conception rate at first service than the L cows (H: 58\% vs. L: 70\%) which extended the conception and calving pattern of the H cows. The possible reasons for those differences in the reproductive performance are discussed as topics for further research. },
	issn = {1176-5283},
	author = {Laborde D and Holmes CW and Garcia-Muniz JG and Wichtel J}
}
