@conference {41769,
	title = {Comparison of white clover , perennial ryegrass and the high tannin containing forage Lotus pedunculatus as finishing diets : Effect on sheepmeat quality},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {67},
	year = {2007},
	month = {Jan},
	pages = {426-430},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Wanaka},
	abstract = {Rams were finished for 22 days on Lotus pedunculatus(LP), perennial ryegrass (Lolium perenne) (RG), or white clover (Trifolium repens) (WC). WC sheep had higher carcass weight (P < 0.001), muscle fat (P < 0.01) and back fat (P < 0.03) depths compared to those finished on LP or RG. Muscle glycogen at slaughter was lower (P < 0.01) in RG compared to LP and WC. Loin p-Cresol was higher (P < 0.001) in LP animals compared to WC or RG. Meat from RG tended to havea more stable retail colour display life compared to LP or WC (P < 0.01). Meat from LP had higher loss of weight during cooking (P < 0.05) compared to WC. The animal diet did not affect the flavour of their meat. There was a strong negative correlation between loin p-Cresol and sheepy odour (r = -0.7; P < 0.05). Within the parameters of this study, finishing lambs on a high tannin containing forage diet did not improve the quality attributes of their meat. The digestibility of the forage diet seems to have exerted a stronger effect on meat quality.},
	issn = {1176-5283},
	author = {Farouk MM and Tavendale M and Lane G and Pulford D and Waller J}
}
@conference {41648,
	title = {Identification of commensal bacterial metabolites that enhance the integrity of the gastrointestinal barrier},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {66},
	year = {2006},
	month = {Jan},
	pages = {225-229},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Napier},
	abstract = {The objective of this research was to identify metabolites produced by commensal bacteria that enhance the integrity of the gastrointestinal barrier (GIB). The integrity of the GIB is mainly determined by the complexity of interactions between tight junctions of opposing epithelial cells of the GI wall. This was measured using an in vitro bioassay, consisting of a monolayer of intestinal epithelial cells grown on a membrane. The trans-epithelial electrical resistance (TEER) across this monolayer was measured to determine the strength of the tight junctions. Preliminary results showed that a commercial probiotic product caused an increase in TEER across non-differentiated and differentiated monolayers by 178 {\textpm} 61\% and 40 {\textpm} 9\%, respectively. The maximum increases in TEER obtained with conditioned media fractions (media fractions containing components secreted by the probiotic product) was between 23 {\textpm} 6\% and 43 {\textpm} 4\%. The conditioned media fraction containing components less than 3 kDa accounted for the total activity of the whole conditioned media. Metabolite profiling of active conditioned media compared to inactive conditioned media using fast-LCMSMS identified numerous metabolites that may be responsible for this positive effect. Future work will isolate the candidate metabolites and screen them for GIB enhancing activity both in vitro and in vivo. },
	issn = {1176-5283},
	author = {Anderson RC and Cassidy LA and Cookson AL and Koulman A and Hurst RD and Fraser K and McNabb WC and Lane G and Roy NC}
}
@conference {41647,
	title = {Microbial metabolomics towards fibre digestibility in the rumen},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {66},
	year = {2006},
	month = {Jan},
	pages = {219-224},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Napier},
	abstract = {Milking cows for two consecutive years, with calving and mating occurring every second year, may exploit the superior lactation persistency of high yielding cows while improving reproductive performance. This study tested the feasibility of extended lactations in pastoral systems using divergent dairy cow genotypes (New Zealand [NZ] or Overseas [OS] Holstein-Friesian [HF]) and levels ofnutrition (0, 3, or 6 kg concentrate DM/cow/day). Cows calved on 28 July 2003 and remaining cows were dried off by 6 May 2005. Of the 56 cows enrolled, 93\% were milking at 500 daysin milk (DIM) and 18\% were milking at 650 DIM. Dietary treatments did not affect DIM (605 {\textpm} 8.3; Mean{\textpm} SEM), but there was a trend (P=0.09) for OS HF to have longer lactations than NZ HF. Genotype x diet interactions were detected for the total yield of milk and milksolids per cow, and as a percentage of liveweight. Differences between genotypes were greatest at the highest level of supplementation. Compared to NZHF, OS HF produced 35\% more milk, 24\% more milk fat, 25\% more milk protein, and at drying off had 1.9 units less body condition. Annualised milksolids production from NZ HF was 79\% of a normal season{\textquoteright}s production, compared to OS HF that produced 94\%. Compared to NZ cows, OS cows had a similar 21-day submission rate (85\%), a lower 42-day pregnancy rate (56\% vs. 79\%), and a higher final empty rate (30 vs. 3\%) when mated at 451 days after calving. These results indicate that productive extended lactations up to 650 days are biologically possible on a range of pasture diets, and with appropriate cow genetics and feedmanagement may ameliorate poor reproductiveperformance in high yielding dairy cows without sacrificing milksolids production},
	issn = {1176-5283},
	author = {Villas-Boas SG and Noel S and Lane G and Attwood G and Cookson A}
}
