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Effect of coated urea and monensin on rumen metabolism of Nellore cows fed low-quality forage-based diet.

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Title: Effect of coated urea and monensin on rumen metabolism of Nellore cows fed low-quality forage-based diet.
Authors: Palma, André S. V.1 (AUTHOR), Junior, Flavio Perna2 (AUTHOR), Oliveira, Mauricio X. S.1 (AUTHOR), Shiozaki, Fabiana A.1 (AUTHOR), Martins, Mellory M.1 (AUTHOR), Alves, Gustavo R.1 (AUTHOR), Rodrigues, Paulo H. M.2 (AUTHOR), Bueno, Ives C. S.1 (AUTHOR), Cônsolo, Nara R. B.1 (AUTHOR), Saran Netto, Arlindo1 (AUTHOR) saranetto@usp.br
Source: New Zealand Journal of Agricultural Research. Apr2025, Vol. 68 Issue 2, p285-307. 23p.
Subjects: Molarity, Magic squares, Protein metabolism, Monensin, Brachiaria, Rumen fermentation, Urea
Abstract: This study investigated the effect of coated urea supplementation associated with monensin on rumen metabolism and fermentation, in cattle consuming a low-quality forage-based diet. Eight ruminally cannulated Nellore cows consuming Brachiaria brizantha cv. Marandu hay were randomly assessed to two 4 × 4 Latin square design, in a 2 × 4 factorial arrangement, with a factorial treatment arrangement with the factors: (i) urea source: (CON) no urea, (URE) common urea, (PCU) polymer-coated urea and (LCU) lipid-coated urea; (ii) monensin: (MON) addition of monensin in the diet; and (NM) no addition of monensin in the diet. Ruminal NH3-N concentration was affected by urea source and there was an interaction between time and the urea source. Rumen acetate molar concentration was lower, while rumen propionate was greater for URE compared to coated urea. The total tract apparent digestibility of crude protein (CP) and non-protein nitrogen (NPN) were greater for URE compared to coated urea treatments and for LCU compared to PCU. Animals fed URE had greater urea excretion compared to coated urea. In conclusion, coated urea generates a lower ammonia peak; however, both coated urea did not promote total nitrogen release. No synergy was observed with the combination of urea and monensin. [ABSTRACT FROM AUTHOR]
Copyright of New Zealand Journal of Agricultural Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Effect of coated urea and monensin on rumen metabolism of Nellore cows fed low-quality forage-based diet.
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  Data: <searchLink fieldCode="AR" term="%22Palma%2C+André+S%2E+V%2E%22">Palma, André S. V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Junior%2C+Flavio+Perna%22">Junior, Flavio Perna</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Oliveira%2C+Mauricio+X%2E+S%2E%22">Oliveira, Mauricio X. S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shiozaki%2C+Fabiana+A%2E%22">Shiozaki, Fabiana A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Martins%2C+Mellory+M%2E%22">Martins, Mellory M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alves%2C+Gustavo+R%2E%22">Alves, Gustavo R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rodrigues%2C+Paulo+H%2E+M%2E%22">Rodrigues, Paulo H. M.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bueno%2C+Ives+C%2E+S%2E%22">Bueno, Ives C. S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cônsolo%2C+Nara+R%2E+B%2E%22">Cônsolo, Nara R. B.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Saran+Netto%2C+Arlindo%22">Saran Netto, Arlindo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> saranetto@usp.br</i>
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  Data: <searchLink fieldCode="JN" term="%22New+Zealand+Journal+of+Agricultural+Research%22">New Zealand Journal of Agricultural Research</searchLink>. Apr2025, Vol. 68 Issue 2, p285-307. 23p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Molarity%22">Molarity</searchLink><br /><searchLink fieldCode="DE" term="%22Magic+squares%22">Magic squares</searchLink><br /><searchLink fieldCode="DE" term="%22Protein+metabolism%22">Protein metabolism</searchLink><br /><searchLink fieldCode="DE" term="%22Monensin%22">Monensin</searchLink><br /><searchLink fieldCode="DE" term="%22Brachiaria%22">Brachiaria</searchLink><br /><searchLink fieldCode="DE" term="%22Rumen+fermentation%22">Rumen fermentation</searchLink><br /><searchLink fieldCode="DE" term="%22Urea%22">Urea</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigated the effect of coated urea supplementation associated with monensin on rumen metabolism and fermentation, in cattle consuming a low-quality forage-based diet. Eight ruminally cannulated Nellore cows consuming Brachiaria brizantha cv. Marandu hay were randomly assessed to two 4 × 4 Latin square design, in a 2 × 4 factorial arrangement, with a factorial treatment arrangement with the factors: (i) urea source: (CON) no urea, (URE) common urea, (PCU) polymer-coated urea and (LCU) lipid-coated urea; (ii) monensin: (MON) addition of monensin in the diet; and (NM) no addition of monensin in the diet. Ruminal NH3-N concentration was affected by urea source and there was an interaction between time and the urea source. Rumen acetate molar concentration was lower, while rumen propionate was greater for URE compared to coated urea. The total tract apparent digestibility of crude protein (CP) and non-protein nitrogen (NPN) were greater for URE compared to coated urea treatments and for LCU compared to PCU. Animals fed URE had greater urea excretion compared to coated urea. In conclusion, coated urea generates a lower ammonia peak; however, both coated urea did not promote total nitrogen release. No synergy was observed with the combination of urea and monensin. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of New Zealand Journal of Agricultural Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/00288233.2023.2224034
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 23
        StartPage: 285
    Subjects:
      – SubjectFull: Molarity
        Type: general
      – SubjectFull: Magic squares
        Type: general
      – SubjectFull: Protein metabolism
        Type: general
      – SubjectFull: Monensin
        Type: general
      – SubjectFull: Brachiaria
        Type: general
      – SubjectFull: Rumen fermentation
        Type: general
      – SubjectFull: Urea
        Type: general
    Titles:
      – TitleFull: Effect of coated urea and monensin on rumen metabolism of Nellore cows fed low-quality forage-based diet.
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              Text: Apr2025
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              Y: 2025
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