2010
DOI: 10.1590/s1516-35982010000800025
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Productive performance and milk protein fraction composition of dairy cows supplemented with sodium monensin

Abstract: -The objective of this work was to evaluate the levels of sodium monensin on lactating cows and their effects on productive performance and milk protein fraction composition. It was used 12 Holstein cows, distributed in four balanced 3 × 3 Latin squares, and fed three diets: one control without monensin, and two diets with monensin at the levels of 24 or 48 mg/kg DM added to the concentrate. Milk production was daily measured throughout the entire experimental period. The samples used for analysis of milk comp… Show more

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Cited by 16 publications
(12 citation statements)
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“…However, the behaviour of the FCM is in agreement with the milk yield, where a large reduction of the FCM for the diet M48 was observed. The biological effect of the reduction of fat content caused by the high levels of monensin, justified by the concentration of propionate (Table 3) are closely related to the results obtained for FCM and are in agreement with (Gandra et al 2010).…”
Section: Discussionsupporting
confidence: 87%
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“…However, the behaviour of the FCM is in agreement with the milk yield, where a large reduction of the FCM for the diet M48 was observed. The biological effect of the reduction of fat content caused by the high levels of monensin, justified by the concentration of propionate (Table 3) are closely related to the results obtained for FCM and are in agreement with (Gandra et al 2010).…”
Section: Discussionsupporting
confidence: 87%
“…High monensin levels (48 mg kg −1 of DM) decreased milk yield, whereas intermediate doses of monensin did not affect milk production. Likewise, Gandra et al (2010) reported lower milk yield in dairy cows supplemented with high monensin level. Normally, previous studies report no difference (Martineau et al 2007;Oelker et al 2009) or increase in milk yield (Gallardo et al 2005;Duffield et al 2008) when dairy cows received monensin.…”
Section: Discussionmentioning
confidence: 92%
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“…Cows in the mid-and late stage of lactation did not change milk production with the use of ionophores (Gandra et al, 2010). However, Gandra et al (2010) did find increases in FE,to reductions in DMI. In the present study, FE was about 18 % higher with salinomycin, compared to the control treatment.…”
Section: Resultsmentioning
confidence: 81%
“…Duffield et al (2008a), em outro trabalho metanalítico, avaliaram os efeitos metabólicos da monensina sódica e observaram que a monensina aumenta a glicemia em 3% e a concentração sérica de ureia em 6%, sem influenciar as concentrações de colesterol, insulina e cálcio no sangue e de ureia no leite. Gandra et al (2010), avaliando concentrações crescentes de monensina sódica nas dietas de vacas leiteiras no terço médio de lactação, observaram redução linear do consumo e resposta quadrática sobre a produção de leite, resultando na maior eficiência produtiva quando a dose utilizada foi de 24 mg/kg de matéria seca da dieta.…”
Section: Hipótese E Objetivosunclassified