Effects of ammoniated pearl millet silage on intake, feeding behavior, and blood metabolites in feedlot lambs
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The aim of this study was to evaluate the effects of urea as an additive in the ensiling of pearl millet on the intake, feeding behavior, and metabolic parameters of feedlot-finished lambs. Thirty-two uncastrated, mixed-breed male lambs were used in the experiment. Diets were composed of pearl millet silage enriched with 0, 2, 4, or 6% urea plus a concentrate containing ground corn, soybean meal, and a mineral mixture. The treatments did not affect feed intake (P > 0.05) but influenced (P < 0.05) eating time (in min/day, in min/kg of dry matter (DM), and in min/kg of neutral detergent fiber (NDF)) and chewing time in min/kg of DM. Eating efficiency (in g DM/h and in g NDFap/h) responded linearly (P < 0.05) to the increasing urea levels in the silages. By contrast, there was no effect (P > 0.05) of diets on the blood protein profile (total proteins and albumin), although the serum urea levels responded quadratically (P < 0.05). Increasing urea levels in the silage did not change the blood energy profile (cholesterol and triglycerides) or blood enzyme activity (alanine aminotransferase (ALT), aspartate aminotransferase (AST), and gamma-glutamyl transferase (GGT); P > 0.05). In conclusion, the treatment of pearl millet silage with urea does not influence the DM intake or metabolic parameters of lambs, but leads to increased eating time and decreased eating efficiency.
KeywordsAdditive Idleness Feed efficiency Urea levels Rumination
We thank the machine learning engineer at Duolingo, Bill McDowell M.Sc., for the English corrections.
This study was financed in part by the Coordination for the Improvement of Higher Education Personnel-Brazil (CAPES) (Grant no. 001).
Compliance with ethical standards
Statement of animal right
The authors declare that all experimental procedures were conducted in accordance with the current law of the country and were approved by the Ethics Committee of Animal Experimentation (no.05-2016).
Conflict of interest
The authors declare that they have no conflict of interest.
- Amer, S., Hassanat, F., Berthiaume, R., Seguin, P., Mustafa, A.F. 2012. Effects of water soluble carbohydrate content on ensiling characteristics, chemical composition and in vitro gas production of forage millet and forage sorghum silages. Animal Feed Science and Technology, 177, 23–29.CrossRefGoogle Scholar
- AOAC. 1990. Official Methods of Analysis, 12th ed. Association of Official Analytical Chemists, Arlington, VA.Google Scholar
- AOAC. 2002. Official Methods of Analysis. Gaithersburg, VA: Association of Official Analytical Chemists.Google Scholar
- Araujo, M.L.G.M.L., Carvalho, G.G.P., Ayres, M. C.C., Bezerra, L.S., Rebouças, R.A., Vieira Filho, C.H C., Oliveira, R.L., Silva, T.M., Leite, J.K.C., Teixeira, C.S.C. 2014. Assessment of the metabolic, protein, energy, and liver profiles of lambs finished in a feedlot and receiving diets containing groundnut cake. Tropical Animal Health and Production, 46, 433–437.CrossRefGoogle Scholar
- Barros, R.C., Rocha Júnior, V.R., Saraiva, E.P., Mendes, G.A., Meneses, G.C.C., Oliveira, C.R., Rocha, W.J.B., Aguiar, A.C.R., Santos, C.C.R. 2011. Ingestive behavior of feedlot Nellore cattle with different levels of substitution of sorghum silage for sugarcane or sugarcane bagasse ammoniated with urea. Revista Brasileira de Ciência Veterinária, 18, 6–13.CrossRefGoogle Scholar
- Burgüer, P.J., Pereira, J.C., Queiroz, A.C., Silva, J.F.C., Valadares Filho, S.C., Cecon, P.R., Casali, A.D.P. 2000. Ingestive behavior in Holstein calves fed diets with different concentrate levels. Revista Brasileira de Zootecnia, 29, 236–242.Google Scholar
- Carvalho, G.G.P., Pires, A.J.V., Silva, H.G.D.O., Veloso, C.M., Silva, R.R. 2007. Methodological aspects of chewing activity of dairy goats fed cocoa meal or palm cake. Revista Brasileira de Zootecnia, 36, 103–110.Google Scholar
- Carvalho, G.G.P., Freitas, P.M.D., Santos, E.M., Araújo, G.G.L., Oliveira, J.S., Pires, A.J.V., Maranhão, C.M.A., Rodrigues, T.C.G.C., Freitas-Junior, J.E., Rufino, L.M.A., Rodrigues, C.S., Leite, L.C., Araujo, M.L.G.M.L. 2018. Effect of pearl millet silage ammoniated with urea on lamb production and metabolic performance. Grass and Forage Science, 73, 685–693.CrossRefGoogle Scholar
- Chaves, A. V., Stanford, K., Dugan, M. E. R., Gibson, L. L., McAllister, T. A., Van Herk, F., & Benchaar, C. (2008). Effects of cinnamaldehyde, garlic and juniper berry essential oils on rumen fermentation, blood metabolites, growth performance, and carcass characteristics of growing lambs. Livestock Science, 117(2–3), 215–224.CrossRefGoogle Scholar
- Eustáquio Filho, A., Carvalho, G.G.P., Pires, A.J.V., Silva, R.R., Santos P.E.F., Murta, R.M., Pereira, F.M., Carvalho, B.M.A., Maranhão, C.M.A., Rufino, L.M.A., Santos, S.A., Pina, D.S. 2016. Intake and ingestive behavior in lambs fed low-digestibility forages. Tropical Animal Health and Production, 48, 1315–1321.CrossRefGoogle Scholar
- FAO, 2009. Grassland Index. A searchable catalogue of grass and forage legumes. FAO.Google Scholar
- Hall, M.B. 2000. Neutral detergent-soluble carbohydrates. Nutritional relevance and analysis. University of Florida. Gainesville. 76 pp.Google Scholar
- Huntington, G. B., and S. L. Archibeque. 2000. Practical aspects of urea and ammonia metabolism in ruminants. Proc. Am. Soc. Anim. Sci. 1999. http://www.asas.org/symposia/proceedings/filename Accessed Oct. 04, 2019.
- Kaneko, J.J., Harvey, J.W., Bruss, M.L. 1997. In: Kaneko, J.J.; Harvey, J.W.; Bruss, M.L. Clinical Biochemistry of Domestic Animals. 5th ed. London: Academic Press, p.885–906.Google Scholar
- Kaneko, J.J., Harvey, J.W., Bruss, M.L. 2008. Clinical Biochemistry of Domestic Animals. 6th ed. San Diego: Academic Press. 904p.Google Scholar
- Meira Jr, E.B.S., Rizzo, H., Benesi, F.J., Gregory, L. 2009. Influência dos fatores sexuais e etários sobre a proteína total, fração albumina e atividade sérica de aspartato-aminotransferase e gama-glutamiltransferase de ovinos da raça Santa Inês. Brazilian Journal of Veterinary Research and Animal Science, 46, 448–454.CrossRefGoogle Scholar
- Mertens, D.R. 1994. Regulation of forage intake. In: Fahey Jr., G.C. (Ed.). Forage quality, evaluation and utilization. Madison: American Society of Agronomy, p.450–493.Google Scholar
- Mertens, D.R. 2002. Gravimetric determination of amylase-treated neutral detergent fiber in feeds with refluxing in beakers or crucibles: collaborative study. Journal of AOAC International, 85, 1217–1240.Google Scholar
- NRC. 2007. Nutrient Requirements of Small Ruminants: Sheep, Goats, Cervids and New World Camelids. National Academies Press.Google Scholar
- Odhaib, K. J., Adeyemi, K. D., Ahmed, M. A., Jahromi, M. F., Jusoh, S., Samsudin, A. A., Halimatun, Y. Sazili, A. Q. 2018. Influence of Nigella sativa seeds, Rosmarinus officinalis leaves and their combination on growth performance, immune response and rumen metabolism in Dorper lambs. Tropical animal health and production, 50, 1011–1023.CrossRefGoogle Scholar
- Oliveira Júnior, R.C., Pires, A.V., Fernandes, J.J.R., Susin, I., Santos, F.A.P., Araujo, R.C. 2004. Total replacement of soybean meal by urea or starea in high grain diets on nitrogen metabolism, ruminal ammonia-N concentration and blood parameters in beef cattle. Revista Brasileira de Zootecnia, 33, 738–748.CrossRefGoogle Scholar
- Perazzo, A. F., Neto, S. P.H., Ribeiro, O.L., Santos, E. M., Carvalho, G. G.P., Oliveira, J.S., Rodrigues, T. C. G. C., Pinho, R. M. A. 2016. Correlations of intake, digestibility and performance with the ingestive behavior of lambs fed diets containing ammoniated buffel grass hay. Semina: Ciencias Agrarias, 37, 1551–1564.Google Scholar
- Perazzo, A.F., Neto, S.D.P.H., Ribeiro, O.L., Santos, E.M., Carvalho, G.G.P., Oliveira, J.S., Bezerra, H.F.C., Campos, F.S., Freitas Junior, J. E. (2017). Intake and ingestive behavior of lambs fed diets containing ammoniated buffel grass hay. Tropical animal health and production, 49, 717–724.CrossRefGoogle Scholar
- Polli, V.A., Restle, J., Senna, D.B., Almeida, S.R.S. 1996. Rumination of bovine and bubaline steers in feedlot regimen. Revista Brasileira de Zootecnia, 25, 987–993.Google Scholar
- Przemysław, S., Cezary, P., Stanislawc, M., Krzystof, L., Barbara, P., Zofia, A., Maja, F., Katarzynaa, Z., Zabek, K. 2015. The effect of nutritional and fermentational characteristics of grass and legume silages on feed intake, growth performance and blood indices of lambs. Small Ruminant Research, 123, 1–7.CrossRefGoogle Scholar
- Pugh, D.C., Dum, M.S. 2005. Clínica de ovinos e caprinos. São Paulo: Edições Roca, 1150p.Google Scholar
- Ramos, J. P. F., Santos, E. M., Santos, A. P. M., de Souza, W. H., & Oliveira, J. S. 2016. Ensiling of Forage Crops in Semiarid Regions. In Advances in Silage Production and Utilization. InTech.Google Scholar
- Santos, R.D., Neves, A.L.A., Pereira, L.G.R., Sollengerger, L.E., Rodrigues, J.A.S., Tabosa, J.N., Vernerque, R.S., Oliveira, G.F., Jayme, D.G., Gonçalves, L.C. 2016. Agronomic traits, ensilability and nutritive value of five pearl millet cultivars grown in a Brazilian semi-arid region. Journal of Agricultural Science, 154,165–173.CrossRefGoogle Scholar
- Van Soest, P.J. 1994. Nutritional ecology of the ruminant. 2nd ed. London: Constock.Google Scholar