Levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry season
The study assessed performance, microbial protein synthesis, intake and digestibility of nutrients by beef heifers receiving levels of multiple supplements or nitrogen salt, in a self-controlled intake, on pasture, during the dry season. Thirty-five beef heifers, from 6 to 9 months of age and averag...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Zootecnia
2011-09-01
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| Series: | Revista Brasileira de Zootecnia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000900024 |
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| author | Ériton Egidio Lisboa Valente Mário Fonseca Paulino Edenio Detmann Sebastião de Campos Valadares Filho Lívia Vieira de Barros Tiago Sabella Acedo Victor Rezende Moreira Couto Sidnei Antonio Lopes |
| author_facet | Ériton Egidio Lisboa Valente Mário Fonseca Paulino Edenio Detmann Sebastião de Campos Valadares Filho Lívia Vieira de Barros Tiago Sabella Acedo Victor Rezende Moreira Couto Sidnei Antonio Lopes |
| author_sort | Ériton Egidio Lisboa Valente |
| collection | DOAJ |
| description | The study assessed performance, microbial protein synthesis, intake and digestibility of nutrients by beef heifers receiving levels of multiple supplements or nitrogen salt, in a self-controlled intake, on pasture, during the dry season. Thirty-five beef heifers, from 6 to 9 months of age and average initial body weight of 203.4 + 4.5 kg, were used. Study factors were: control - mineral mixture; nitrogen salt - 50% of urea + mineral mixture, at proportion of 1:1, and 50% of corn (75% of crude protein); levels of multiple supplementation - multiple supplements with different percentages of intake controller mixture (urea + mineral mixture, at the proportion of 1:1), corn and soybean meal (45% of crude protein). Supplement consumptions observed were: 115, 173, 572 and 1214 g/animal/day for animals fed on nitrogen salt, low, medium and high levels of multiple supplement, respectively. Supplemented animals had greater average daily gain, evidencing the positive linear effect of the levels of multiple supplementation on average daily gain. Overall, there were no significant differences between average daily gain of animals fed on multiple supplements or nitrogen salt. Supplementation increased the intake and digestibility of nutrients, except for digestibility of neutral detergent fiber, although the intake of digested neutral detergent fiber increased. Supplementation increased the production of microbial nitrogen as well as nitrogen losses in urine, although the quantity of nitrogen assimilated by bacteria, proportionally to intake, was higher. Supplementation improves nutritional parameters and weight gain. |
| first_indexed | 2024-12-11T12:33:48Z |
| format | Article |
| id | doaj.art-7b92871e311c4c3ebd21a711fd6d86d9 |
| institution | Directory Open Access Journal |
| issn | 1516-3598 1806-9290 |
| language | English |
| last_indexed | 2024-12-11T12:33:48Z |
| publishDate | 2011-09-01 |
| publisher | Sociedade Brasileira de Zootecnia |
| record_format | Article |
| series | Revista Brasileira de Zootecnia |
| spelling | doaj.art-7b92871e311c4c3ebd21a711fd6d86d92022-12-22T01:07:10ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1516-35981806-92902011-09-014092011201910.1590/S1516-35982011000900024Levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry seasonÉriton Egidio Lisboa ValenteMário Fonseca PaulinoEdenio DetmannSebastião de Campos Valadares FilhoLívia Vieira de BarrosTiago Sabella AcedoVictor Rezende Moreira CoutoSidnei Antonio LopesThe study assessed performance, microbial protein synthesis, intake and digestibility of nutrients by beef heifers receiving levels of multiple supplements or nitrogen salt, in a self-controlled intake, on pasture, during the dry season. Thirty-five beef heifers, from 6 to 9 months of age and average initial body weight of 203.4 + 4.5 kg, were used. Study factors were: control - mineral mixture; nitrogen salt - 50% of urea + mineral mixture, at proportion of 1:1, and 50% of corn (75% of crude protein); levels of multiple supplementation - multiple supplements with different percentages of intake controller mixture (urea + mineral mixture, at the proportion of 1:1), corn and soybean meal (45% of crude protein). Supplement consumptions observed were: 115, 173, 572 and 1214 g/animal/day for animals fed on nitrogen salt, low, medium and high levels of multiple supplement, respectively. Supplemented animals had greater average daily gain, evidencing the positive linear effect of the levels of multiple supplementation on average daily gain. Overall, there were no significant differences between average daily gain of animals fed on multiple supplements or nitrogen salt. Supplementation increased the intake and digestibility of nutrients, except for digestibility of neutral detergent fiber, although the intake of digested neutral detergent fiber increased. Supplementation increased the production of microbial nitrogen as well as nitrogen losses in urine, although the quantity of nitrogen assimilated by bacteria, proportionally to intake, was higher. Supplementation improves nutritional parameters and weight gain.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000900024digestibilityintakeperformanceself-control |
| spellingShingle | Ériton Egidio Lisboa Valente Mário Fonseca Paulino Edenio Detmann Sebastião de Campos Valadares Filho Lívia Vieira de Barros Tiago Sabella Acedo Victor Rezende Moreira Couto Sidnei Antonio Lopes Levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry season Revista Brasileira de Zootecnia digestibility intake performance self-control |
| title | Levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry season |
| title_full | Levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry season |
| title_fullStr | Levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry season |
| title_full_unstemmed | Levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry season |
| title_short | Levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry season |
| title_sort | levels of multiple supplements or nitrogen salt for beef heifers in pasture during the dry season |
| topic | digestibility intake performance self-control |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000900024 |
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