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2002
Effects of time-of-calving on dairy production: a farmlet study, MJ, Audlist, KA MacDonald, NA Thomson, M Coulter, JAS Lancaster, and JW Penno , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 62, Palmerston North, p.42-43, (2002)
A whole-farm model applied to a dairy system, ME, Wastney, CC Palliser, JA Lile, KA MacDonald, JW Penno, and KP Bright , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 62, Palmerston North, p.120-123, (2002)
2001
Adapting the MOLLY cow model to fit production data from New Zealand animals, CC, Palliser, KP Bright, KA MacDonald, JW Penno, and ME Wastney , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 61, Christchurch, p.234-236, (2001)
Magnesium supplementation of lactating dairy cows in the summer and autumn, KA, MacDonald, JW Penno, GA Verkerk, J Jago, and BW Dow , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 61, Christchurch, p.148-151, (2001)
Toward a predictive model of supplementary feeding response from grazing dairy cows, JW, Penno, KA MacDonald, and CW Holmes , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 61, Christchurch, p.229-233, (2001)
2000
The effect of pasture silage quality on milk production and liveweight gain of dairy cattle, KA, MacDonald, PK Nicholas, JM Kidd, JW Penno, and AR Napper , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 60, Hamilton, p.253-255, (2000)
1999
Increasing milksolids production with supplementary feeds, JW, Penno, JM McGrath, KA MacDonald, M Coulter, and JAS Lancaster , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 59, p.188-191, (1999)
Validation of body condition scoring by using ultrasound measurements of subcutaneous fat., KA, MacDonald, GA Verkerk, and JW Penno , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 59, p.177-179, (1999)
1998
Balancing pasture and maize silage diets for dairy cows using urea, soybean meal or fishmeal, KA, MacDonald, JW Penno, ES Kolver, WAC Carter, and JAS Lancaster , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 58, p.102-105, (1998)
The effect of stage of lactation and season on milksolids response to supplementary feeding of dairy cows., JW, Penno, CW Holmes, KA MacDonald, and BJ Walsh , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 58, p.113-116, (1998)
Management decision rules to optimise milksolids production on dairy farms, KA, MacDonald, and JW Penno , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 58, p.132-135, (1998)
Using nitrogen fertiliser to increase dairy farm profitability, JM, McGrath, JW Penno, KA MacDonald, and WA Carter , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 58, p.117-120, (1998)
1997
The effect of level of feeding during rearing on the first lactation milk yield of Friesian replacement heifers., JW, Penno, KA MacDonald, and AM Bryant , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 57, p.176-178, (1997)
Growth of friesian calves offered three allowances of milk replacer., KA, MacDonald, and JW Penno , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 57, p.179-181, (1997)
1996
Effect of body covers on the liveweight gain of heifer replacement calves and yearlings, and the liveweight gain and milksolids production of dairy cows, KA, MacDonald, and JW Penno , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 56, p.266-269, (1996)
Effect of feeding turnips to dairy cows grazing limited amounts of pasture in mid to late lactation on milksolids production, JW, Penno, AM Bryant, AR Napper, and PJA Copeman , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 56, p.242-244, (1996)
Effect of nitrogen fertiliser and supplements on pasture production and milksolids yield from dairy farm systems, JW, Penno, AM Bryant, and KA MacDonald , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 56, p.236-238, (1996)
Evaluation of the Cornell Net Carbohydrate and Protein System for dairy cows fed pasture-based diets, ES, Kolver, MC Barry, JW Penno, and LD Muller , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 56, p.251-254, (1996)
1995
Effect of level of nutrition on age of puberty and reproductive performance of Friesian heifers, JW, Penno, KL Macmillan, and AM Bryant , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 55, p.79-81, (1995)
Effect of nitrogen fertiliser and summer rotation length on milk production in a dry Waikato summer., JW, Penno, AM Bryant, WA Carter, and KA MacDonald , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 55, p.64-66, (1995)
1993
A comparison of the effect of split and single applications of nitrogen fertiliser on dairy production, JW, Penno , Proceedings of the New Zealand Society of Animal Production, Jan, Volume 53, p.33-36, (1993)