Incorporating a Fresh Mixed Annual Ryegrass and Berseem Clover Forage Into the Winter Diet of Dairy Cows Resulted in Reduced Milk Yield, but Reduced Nitrogen Excretion and Reduced Methane Yield

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dc.contributor.authorEnriquez-Hidalgo, Daniel
dc.contributor.authorTeixeira, Dayane Lemos
dc.contributor.authorPinheiro Machado Filho, Luiz Carlos
dc.contributor.authorHennessy, Deirdre
dc.contributor.authorToro-Mujica, Paula
dc.contributor.authorWilliams, Shaun Richard Owen
dc.contributor.authorPereira, Fabiellen Cristina
dc.date.accessioned2025-01-23T19:46:53Z
dc.date.available2025-01-23T19:46:53Z
dc.date.issued2020
dc.description.abstractThe winter diet of dairy cows in Mediterranean climate regions is usually a total mixed ration with a base of conserved summer crops such as corn silage and alfalfa hay. However, there is increased labor and financial cost related to this kind of feeding, which could be reduced if fresh forages were used in place of some of the conserved forage in the cow diet. The objective of our study was to evaluate the effect of including fresh mixed annual ryegrass and berseem clover into the diet of dairy cows on milk, nitrogen utilization, and methane emission. Twenty-four lactating dairy cows were split into two groups and offered either a diet similar to that usually offered to the cows (CON) or one where a mixture of fresh annual ryegrass and berseem clover was used to partially substitute the corn silage and alfalfa hay in the diet (MIX). Milk yield was recorded automatically, and methane emissions were estimated using the SF6 tracer technique. The MIX diet had lower crude protein concentration (148 vs. 170 g/kg DM) but higher DM digestibility (81.6 vs. 78.6%) than the CON diet. Compared to the cows offered the CON diet, milk yield was reduced when cows were fed the MIX diet (36.4 vs. 31.9 kg/d), but methane emissions (381 vs. 332 g/d) and nitrogen excretion were also reduced (238 vs. 180 g/d). Nitrogen use efficiency was unaffected (30.8%). In addition, milk from cows fed the MIX diet had a fatty acid profile considered to be more beneficial to human health than that of the milk from cows fed the CON diet. Increasing the protein concentration in the MIX diet, either by direct supplementation or increasing the proportion of legume in the mixed herbage, could overcome the reduction on milk and positively affect methane emission and N use efficiency.
dc.description.funderNational Commission for Scientific and Technological Research, CONICYT, Chile, through the Program FONDECYT
dc.fuente.origenWOS
dc.identifier.doi10.3389/fvets.2020.576944
dc.identifier.eissn2297-1769
dc.identifier.urihttps://doi.org/10.3389/fvets.2020.576944
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100328
dc.identifier.wosidWOS:000596052800001
dc.language.isoen
dc.revistaFrontiers in veterinary science
dc.rightsacceso restringido
dc.subjectmixed herbage
dc.subjectTrifolium alexandrinum
dc.subjectLolium multiflorum
dc.subjecttotal mixed ration
dc.subjectdairy cattle
dc.subjectenteric methane
dc.subjectmilk production
dc.subjectmilk quality
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleIncorporating a Fresh Mixed Annual Ryegrass and Berseem Clover Forage Into the Winter Diet of Dairy Cows Resulted in Reduced Milk Yield, but Reduced Nitrogen Excretion and Reduced Methane Yield
dc.typeartículo
dc.volumen7
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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