Use of short-term breath measures to estimate daily methane production by cattle
نویسندگان
چکیده
منابع مشابه
Estimating daily methane production in individual cattle with irregular feed intake patterns from short-term methane emission measurements.
Spot measurements of methane emission rate (n = 18 700) by 24 Angus steers fed mixed rations from GrowSafe feeders were made over 3- to 6-min periods by a GreenFeed emission monitoring (GEM) unit. The data were analysed to estimate daily methane production (DMP; g/day) and derived methane yield (MY; g/kg dry matter intake (DMI)). A one-compartment dose model of spot emission rate v. time since ...
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Seventy-six Angus steers chosen from breeding lines divergently selected for residual feed intake (RFI) were studied to quantify the relationship between RFI and the daily rate of methane production (MPR). A 70-d feeding test using a barley-based ration was conducted in which the voluntary DMI, feeding characteristics, and BW of steers were monitored. The estimated breeding value (EBV) for RFI ...
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this study attempted to explore if teaching english collocations through two different modes of awareness-raising and input flooding has any possible differential effect on immediate retention as well as retention in a delayed assessment. it also compared the possible differential effect of teaching english collocations implicitly and explicitly on actively using the items in writing. m...
15 صفحه اولShort-term temperament tests in beef cattle relate to long-term measures of behavior recorded in the home pen.
Handling temperament tests for beef cattle have been related to production traits, with calmer temperaments having greater growth rates. In most tests of temperament or personality, observation of the animal takes place over a short period of time, sometimes completed in a matter of minutes. This study investigated whether behavior observed in a temperament test was reflective of the steer's be...
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ژورنال
عنوان ژورنال: Animal
سال: 2016
ISSN: 1751-7311
DOI: 10.1017/s1751731115001603