Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures
Abstract Background Nutrition is one of the most important factors that affect animal performance, and it therefore also impacts on financial results in beef systems. In this way, finding the best strategy for feeding supplements is of paramount importance. Aiming to evaluate the effect of supplemen...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2017-10-01
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| Series: | Journal of Animal Science and Biotechnology |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40104-017-0209-x |
| _version_ | 1818561483242471424 |
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| author | Aline Gomes da Silva Mário Fonseca Paulino Edenio Detmann Henrique Jorge Fernandes Lincoln da Silva Amorim Román Enrique Maza Ortega Victor Valério de Carvalho Josilaine Aparecida da Costa Lima Felipe Henrique de Moura Mariana Benevides Monteiro Jéssika Almeida Bitencourt |
| author_facet | Aline Gomes da Silva Mário Fonseca Paulino Edenio Detmann Henrique Jorge Fernandes Lincoln da Silva Amorim Román Enrique Maza Ortega Victor Valério de Carvalho Josilaine Aparecida da Costa Lima Felipe Henrique de Moura Mariana Benevides Monteiro Jéssika Almeida Bitencourt |
| author_sort | Aline Gomes da Silva |
| collection | DOAJ |
| description | Abstract Background Nutrition is one of the most important factors that affect animal performance, and it therefore also impacts on financial results in beef systems. In this way, finding the best strategy for feeding supplements is of paramount importance. Aiming to evaluate the effect of supplement feeding strategies for beef cows in the last third of gestation, two experiments were conducted. In Experiment 1, 35 pregnant Nellore cows were assigned to a completely randomized design with four treatments: control, which received no supplement; supplementation for the last 30 d of gestation (30-d; 3.0 kg/d); supplementation for the last 60 d of gestation (60-d; 1.5 kg/d); or supplementation for the last 90 d of gestation (90-d; 1.0 kg/d). All supplemented treatments received the same total amount of supplement throughout the experiment: 90 kg (20% of crude protein). A second experiment (Experiment 2) was delineated to evaluate the effects of the amounts offered in Experiment 1 on intake and metabolism. Four multiparous pregnant Nellore cows were assigned to a 4 × 4 Latin square design, with periods of 15 d each. Results There was a linear effect of the number of days of supplementation on calving body weight (BW; P < 0.05) and a quadratic effect on BW change from parturition to d 31 post-calving (P < 0.05), with cows on the 60-d strategy losing less BW post-calving. No difference was found in offspring birth BW (P > 0.10). A significant linear effect on interval from parturition to conception (P < 0.05) was observed, with the highest calving to conception interval being observed in the 90-d strategy. The level of supplementation did not affect forage intake or neutral detergent fiber digestibility (P > 0.10). Nitrogen excreted through urine tended to increase linearly with the level of supplementation (P < 0.10). Conclusion Providing 1.5 kg of supplement during the last 60 d of gestation improves cow performance after calving, reducing the magnitude of BW lost, and reduces the number of days from calving to re-conception in the following breeding season compared to the usually recommended period of supplementation of 90 d pre-partum. |
| first_indexed | 2024-12-14T00:51:26Z |
| format | Article |
| id | doaj.art-4f7eff59bfb94f85896f7ea3bc7517cc |
| institution | Directory Open Access Journal |
| issn | 2049-1891 |
| language | English |
| last_indexed | 2024-12-14T00:51:26Z |
| publishDate | 2017-10-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Animal Science and Biotechnology |
| spelling | doaj.art-4f7eff59bfb94f85896f7ea3bc7517cc2022-12-21T23:23:49ZengBMCJournal of Animal Science and Biotechnology2049-18912017-10-01811910.1186/s40104-017-0209-xEnergetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pasturesAline Gomes da Silva0Mário Fonseca Paulino1Edenio Detmann2Henrique Jorge Fernandes3Lincoln da Silva Amorim4Román Enrique Maza Ortega5Victor Valério de Carvalho6Josilaine Aparecida da Costa Lima7Felipe Henrique de Moura8Mariana Benevides Monteiro9Jéssika Almeida Bitencourt10Universidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Estadual de Mato Grosso do SulUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal do AcreUniversidade Federal de ViçosaAbstract Background Nutrition is one of the most important factors that affect animal performance, and it therefore also impacts on financial results in beef systems. In this way, finding the best strategy for feeding supplements is of paramount importance. Aiming to evaluate the effect of supplement feeding strategies for beef cows in the last third of gestation, two experiments were conducted. In Experiment 1, 35 pregnant Nellore cows were assigned to a completely randomized design with four treatments: control, which received no supplement; supplementation for the last 30 d of gestation (30-d; 3.0 kg/d); supplementation for the last 60 d of gestation (60-d; 1.5 kg/d); or supplementation for the last 90 d of gestation (90-d; 1.0 kg/d). All supplemented treatments received the same total amount of supplement throughout the experiment: 90 kg (20% of crude protein). A second experiment (Experiment 2) was delineated to evaluate the effects of the amounts offered in Experiment 1 on intake and metabolism. Four multiparous pregnant Nellore cows were assigned to a 4 × 4 Latin square design, with periods of 15 d each. Results There was a linear effect of the number of days of supplementation on calving body weight (BW; P < 0.05) and a quadratic effect on BW change from parturition to d 31 post-calving (P < 0.05), with cows on the 60-d strategy losing less BW post-calving. No difference was found in offspring birth BW (P > 0.10). A significant linear effect on interval from parturition to conception (P < 0.05) was observed, with the highest calving to conception interval being observed in the 90-d strategy. The level of supplementation did not affect forage intake or neutral detergent fiber digestibility (P > 0.10). Nitrogen excreted through urine tended to increase linearly with the level of supplementation (P < 0.10). Conclusion Providing 1.5 kg of supplement during the last 60 d of gestation improves cow performance after calving, reducing the magnitude of BW lost, and reduces the number of days from calving to re-conception in the following breeding season compared to the usually recommended period of supplementation of 90 d pre-partum.http://link.springer.com/article/10.1186/s40104-017-0209-xFlushingNutritionParturitionReproduction |
| spellingShingle | Aline Gomes da Silva Mário Fonseca Paulino Edenio Detmann Henrique Jorge Fernandes Lincoln da Silva Amorim Román Enrique Maza Ortega Victor Valério de Carvalho Josilaine Aparecida da Costa Lima Felipe Henrique de Moura Mariana Benevides Monteiro Jéssika Almeida Bitencourt Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures Journal of Animal Science and Biotechnology Flushing Nutrition Parturition Reproduction |
| title | Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures |
| title_full | Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures |
| title_fullStr | Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures |
| title_full_unstemmed | Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures |
| title_short | Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures |
| title_sort | energetic protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures |
| topic | Flushing Nutrition Parturition Reproduction |
| url | http://link.springer.com/article/10.1186/s40104-017-0209-x |
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