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Final models for the difference in methane emissions (g) per litre of milk produced following the implementation of 3 reproductive management programmes in dairy herds compared to a baseline<sup>1</sup> scenario.

By Simon C. Archer (752797), Christopher D. Hudson (610862) and Martin J. Green (407496)

Abstract

<p><sup>1</sup> Cows submitted for service based on observation of oestrus only (Group 1).</p><p><sup>2</sup> All cows treated with gonadotropin releasing hormone and prostaglandin such that they all receive a first service between 50 and 64 days in milk regardless of oestrous detection. Repeat services based on observation of oestrous.</p><p><sup>3</sup> All cows treated with gonadotrophin releasing hormone, progesterone, and prostaglandin such that all cows can receive a first service between 50 and 64 days in milk. Repeat services based on observation of oestrus.</p><p><sup>4</sup> Cows not observed in oestrous treated up to 2 times with prostaglandin to increase the probability of oestrus between 50 and 64 days in milk. All services based on observation of oestrus.</p><p><sup>5</sup> Standard error.</p><p><sup>6</sup> Proportion of eligible cows that are served prior to intervention (centred on the mean). Polynomial term.</p><p><sup>7</sup> Proportion of served cows that conceive prior to intervention (centred on the mean). Polynomial term.</p><p><sup>8</sup> Cumulative 305 day milk yield (thousand kg; centred on the mean).</p><p><sup>9</sup> Voluntary waiting period (days) from calving to first service (centred on the mean).</p><p>Final models for the difference in methane emissions (g) per litre of milk produced following the implementation of 3 reproductive management programmes in dairy herds compared to a baseline<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0127846#t003fn001" target="_blank"><sup>1</sup></a> scenario.</p

Topics: Biological Sciences, methane emissions, herd, Routine Hormonal Interventions, oestru, insemination, uk, cow replacement risk
Year: 2015
DOI identifier: 10.1371/journal.pone.0127846.t003
OAI identifier: oai:figshare.com:article/1445347
Provided by: FigShare
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