@conference {69503,
	title = {Preliminary investigation of milk production in Angus heifers exposed to different nutrition in utero},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {70},
	year = {2010},
	month = {Jun},
	pages = {194-198},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Palmerston North},
	abstract = {Milk yield (MY) and composition were measured on one day in Weeks 7, 9 and 11 in 17 offspring of Angus cows fed for high (1.2 kg/d; HB) or medium (0.5 kg/d; MB) liveweight gain (LWG) for 10 days before insemination and medium (0.5 kg/d; MA) or low (0.01 kg/d; LA) LWG during gestation. Mean MYs in the progeny were; Week 7: 5790 {\textpm} 420 g/d, Week 9: 7418 {\textpm} 447 g/d, Week 11: 6244 {\textpm} 392 g/d. Better feeding before mating had little effect on MY or milk crude protein (CP\%) in the progeny but tended to reduce the milkfat\% (Week 9; HB (n = 8) 3.50 {\textpm} 0.17\% versus MB (n = 8) 3.74 {\textpm} 0.22\%) (P <0.19), casein (Week 11; HB 2.59 {\textpm} 0.03\% versus MB 2.68 {\textpm} 0.04\%) (P = 0.11) and lactose (Week 11; HB 5.18 {\textpm} 0.13\% versus MB 5.42 {\textpm} 0.05\%) (P = 0.075). Better feeding of the dam after artificial insemination did not significantly increase MY of the progeny (Week 9; MA (n = 9) 7972 {\textpm} 378 g/d versus LA (n = 8) 6794 {\textpm} 826 g/d) (P = 0.23), or milkfat\%, decreased CP (Week 9; MA 3.22 {\textpm} 0.07\% versus LA 3.41 {\textpm} 0.08\%) (P <0.09) and casein\% (at Weeks 7 and 9 identical values of MA 2.52 {\textpm} 0.06\% versus LA 2.69 {\textpm} 0.07\%), but increased lactose\% after the peak of lactation (Week 11 MA 5.42 {\textpm} 0.06\% versus LA 5.15 {\textpm} 0.14\%) (P <0.08). Feeding before and after conception may affect the nutrition of the grand generation},
	issn = {1176-5283},
	author = {Peterson SW and Jenkinson CMC and Hickson RE and Morris ST and Blair HT and Kenyon PR}
}
