@conference {41807,
	title = {Effect of dietary protein on liveweight gain in parasitised cows},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {68},
	year = {2008},
	month = {Jan},
	pages = {113-116},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Brisbane, Australia},
	abstract = {The interaction between parasitism and crude protein (CP) nutrition on calf liveweight gain (LWG) was investigated. One hundred and twelve calves were either administered 21,000 parasite larvae (73\% Cooperia oncophora, 16\% Ostertagia ostertagi, 11\% Trichostrongylus axei) twice per week or drenched fortnightly with anthelmintic for 12 weeks. Calves grazed ryegrass pastures and received 40\% of their diet as either low (15\% CP) or high (26\% CP) protein pellets. Half of the calves switched diets after six weeks. All treatments averaged a liveweight gain of at least 1 kg/d. After 12 weeks non-parasitised calves were 13 (standard error of difference (SED 2.0)) kg heavier than parasitised calves (P <0.001), and calves fed a high protein supplement were 12 (SED 2.8) kg heavier than those fed low protein supplement (P <0.001). There was no interaction between diet and parasitism (P = 0.74). Subsequentlycalves grazed together for a further 12 weeks with no supplements or parasite dosing. The liveweight advantage of the high protein supplement was lost, while non-parasitised calves maintained a liveweight advantage of 15 (SED 4.9) kg (P <0.01). While protein supplementation did not affect faecal egg count or blood pepsinogen it has the potential to improve LWG with less reliance on anthelmintics under field conditions.},
	issn = {1176-5283},
	author = {Burggraaf VT and Puha MR and Adler AA}
}
