@conference {69020,
	title = {Amino acid flow at the abomasum in twin-suckling ewes at pasture and the effect of a fishmeal supplement},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {69},
	year = {2009},
	month = {Jun},
	pages = {233-237},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Christchurch},
	abstract = {Fourteen twin-suckling ewes with rumen and abomasal cannulae grazed a ryegrass/clover sward (C; n = 7) or the same sward but with a 500 g/h/d protein supplement (S; n = 7). The trial was designed as a cross-over with two 14 day adaptation periods followed by two five day sampling periods (Days 43-48 and 63-68 after lambing). All ewes were treated with anthelmintic 14 days after lambing. Flow of amino acids (AA) at the abomasum and dry matter (DM) intake were measuredduring both periods using intra-ruminally infused markers. Diurnal variation in AA flow peaked between 12:00 and 15:00 h and was greatest in the supplemented ewes. Flows of AA were increased by supplementation; Essential AA, +16 \%; 128 to 148 g/d, Sulphur-AA, +21.2 \%; 3.3 to 4.0 g/d, Branched-chain AA, +15.9\%, 47.8 to 55.4 g/d. There was evidence for a lower faecal egg count in supplemented animals, being 670 vs 46 epg, respectively, in C and S groups, (P = 0.08) 21 days after anthelmintic treatment. This work provides information on the extent of enhancement of the supply of amino acids associated with ability to limit the peri-parturient increase in faecal egg count and provides a basis for the development of supplements.},
	issn = {1176-5283},
	author = {Madibela OR and Gibbs SJ and Sykes AR and Laporte-Uribe J and Zhao J}
}
@conference {41816,
	title = {High crude protein in autumn pasture does not impair reproductive performance in sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {68},
	year = {2008},
	month = {Jan},
	pages = {156-157},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Brisbane, Australia},
	abstract = {Embryos exposed to ammonia may degenerate or their growth enhanced (McEvoy et al., 1997). Kelly (1982) reported reproductive wastage of 24.9\% in South Island sheep. New Zealand pastures contain high concentrations of crude protein (Chaves et al., 2002) but whether reproductive wastage can partly be explained by ammonia and/or urea toxicity from high protein pasture is unknown. The aims of the present study were to determine the effect of plasma urea concentration on ovulation rate, embryo survival, conception rate and lamb birth weight in ewes joined with the ram on ...Continued },
	issn = {1176-5283},
	author = {Madibela OR and Nicol AM and Sykes AR and Jay NP}
}
