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Food, fibre and pharmaceuticals from animals
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Animal Production Science

Animal Production Science

Volume 65 Number 2 2025

AN24334The economic optimum mob size at lambing for triplet-bearing Maternal and Merino ewes across southern Australia

John M. Young 0009-0009-5557-5585, Paul R. Kenyon, Lyndon J. Kubeil, Andrew N. Thompson 0000-0001-7121-7459, Jason Trompf and Amy Lockwood 0000-0003-2061-9110

Reducing the mob size of triplet-bearing ewes increases the survival of their lambs. An economic analysis demonstrated that the optimum mob size for triplet-bearing ewes was approximately 35% that for twin-bearing ewes, regardless of whether that was achieved by subdividing paddocks or differential allocation of ewes to existing paddocks. Identifying triplet-bearing ewes was justified purely from the benefits of differential paddock allocation at lambing if the proportion of triplet-bearing ewes is greater than 3% for Maternal ewes or 7% for Merino ewes.

AN24285Milk yield and pasture nutrient availability associated with milking order in commercial dairy herds

Monique J. Berkhout 0009-0000-1807-4524, Martin J. Auldist, Meaghan L. Douglas 0000-0002-4709-4572, Anna L. Thomson 0000-0003-4997-7325, Khageswor Giri, Joe L. Jacobs and Marlie M. Wright

On pasture-based dairy farms, cows spend prolonged time away from pasture while in transit to and from the dairy and while waiting to be milked, which reduces the milk production of cows later in the milking order as shown in our research. This is likely to be linked to later-milked cows having access to less nutritious pasture. Implementing mitigation strategies that improve the nutrients available to later-milked cows, such as reserving fresh pasture, should be explored.

This article belongs to the collection: Australasian Dairy Science Symposium 2024.

AN24351Portable Meat Production and Retailing Facility (P-MART): a novel technology for clean meat production from sheep and goats

P. S. Girish 0000-0001-9389-5007, D. Priyanka, R. Vijay Bhaskar, K. Sudheer, R. Vikram, J. Jyoti, N. Raveendhar, C. Ramakrishna and S. B. Barbuddhe

Ensuring clean and hygienic meat production is essential, especially for small-scale producers in India who often lack access to adequate slaughter facilities. This study introduces an innovative Portable Meat Production and Retailing Facility (P-MART) that provides an affordable solution for processing sheep and goats, while maintaining high standards of hygiene and sustainable waste management. The success of P-MART not only improves the livelihoods of small-scale producers but also promotes public health and environmental protection through responsible waste disposal practices.

AN24218Utilization of oocytes from closely related domestic species for interspecies somatic cell nuclear transfer in gaur embryo production

Ratree Jintana, Kriengsak Tasripoo, Kitiya Srisakwattana 0000-0002-9184-0528, Wanvipa Suthikrai, Sunpetch Sophon and Theerawat Tharasanit

Bovine, buffalo, and goat oocyte cytoplasm is effective for producing gaur iSCNT embryos, capable of initiating early pregnancies. iSCNT is probably one of the promising reproductive technologies for increasing the gaur. The use of taxonomy closely related animal species applied to methodology and techniques by optimizing culture conditions and procedures across closely related species would greatly benefit laboratory production and field implication (enhancing the chance of probability of surrogate mother), and also saving cost and time, to increase the population size of endangered species.

AN24216Mobilisation and replenishment of phosphorus reserves in Bos indicus cows. 2. Mature lactating cows fed diets deficient or adequate in phosphorus

R. M. Dixon 0000-0002-8107-9456, M. A. Benvenutti 0000-0002-2335-6371, K. L. Goodwin, S. T. Anderson, R. J. Mayer, P. Isherwood, L. J. Kidd and M. T. Fletcher

Many rangeland regions have low phosphorus soils so that the pastures are deficient in phosphorus for grazing cattle. Cows in early lactation are particularly at risk of deficiency due to their high nutritional requirements. An experiment examined the responses of mature lactating beef cows to severe dietary phosphorus deficiency. During early lactation cows were able to mobilise substantial amounts of minerals from bone to alleviate dietary phosphorus deficiency and maintain milk production, albeit with reduced voluntary feed intake and marked liveweight loss.

Committee on Publication Ethics

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