Abstract
The objective of this study was to evaluate the effects of strategic supplementation in the dry period and dry/rainy transition period on the performance and nutritional, metabolic, and reproductive responses of Nellore heifers grazing Urochloa decumbens. Forty-eight Nellore heifers with age and body weight (BW) of eight months and 235 ± 3.3 kg, respectively, were used. The experimental design was a completely randomized design, with four treatments, all with 12 replications. The evaluated strategies were as follows: low supplementation (LOHI; 0.2% of BW/heifer/day) in the first 90 days and high supplementation (0.6% of BW/heifer/day) in the 90 days thereafter; average supplementation (AVER) with 0.4% of BW/heifer/day for 180 days; high supplementation (HILO; 0.6% of BW/heifer/day) in the first 90 days and low supplementation (0.2% of BW/heifer/day) in the 90 days thereafter; only mineral mix (MM) ad libitum during the 180 days. Data were evaluated using orthogonal contrasts. Supplementation improved the performance of the animals during of dry period (P < 0.05) and dry/rainy transition period (P < 0.05). Supplemented animals had higher longissimus muscle area (LMA) and subcutaneous fat thickness (SFT) at the end of the experiment (P < 0.05). Multiple supplementation increased intake of dry matter (DM), organic matter (OM), and crude protein (CP) in kg/day throughout the experiment. The supplementation increased the digestibility of DM, OM, CP, apNDF, and TDN (P < 0.05). Serum urea nitrogen (SUN), glucose (GLUC), insulin (INS), and progesterone (PROG) were higher in supplemented heifers (P < 0.05). Supplementation reduced the concentrations of non-esterified fatty acids (NEFA) (P < 0.05) and increased conception rate (P < 0.05). In summary, the supplementation strategies adopted in this study improve the performance, metabolic status, and carcass traits of heifers under grazing, allowing an improvement in the conception rate of 15-month-old Nellore heifers.
Similar content being viewed by others
References
Batista, E.D., Detmann, E., Gomes, D.I., Rufino, L.M.A., Paulino, M.F., Valadares Filho, S.C., 2016. Effect of protein supplementation in the rumen, abomasum, or both on intake, digestibility, and nitrogen utilisation in cattle fed high-quality tropical forage, Animal Production Science, 57, 1993–2000
Beretta, V., Lobato, J.F.P., Mielitz Netto, C.G., 2001. Produtividade e eficiência biológica de sistemas pecuários diferindo na idade das novilhas ao primeiro parto e na taxa de natalidade do rebanho de cria no Rio Grande do Sul, Revista Brasileira de Zootecnia, 30, 1278–1288
Bruckmaier, R.M., 1998. Ultrasonic measurement of longissimus dorsi muscle and back fat associated with metabolic and endocrine traits, during fattening of intact and castrated male cattle, Livestock Production Science, 53, 123–134
Chapinal, N., Carson, M., Duffield, T.F., 2011. The association of serum metabolites with clinical disease during the transition period, Journal of dairy science, 94, 4897–4903
Detmann, E., Paulino, M.F., Zervoudakis, J.T., 2001. Cromo e Indicadores internos na determinação do consumo de novilhos mestiços, suplementados, a pasto, Revista Brasileira de Zootecnia, 30, 1600–1609
Detmann, E., Queiroz, A.C., Cecon, P.R., 2003. Neutral detergent fiber intake by feedlot cattle, Revista Brasileira de Zootecnia, 32, 1763–1777
Detmann, E., Souza, M.A., Valadares Filho, S.C., Queiroz, A.C., Berchielli, T.T., Saliba, E.O.S., Cabral, L.S., Pina, D.S., Ladeira, M.M., Azevedo, J.A.G., 2012. Métodos para análise de alimentos, (Suprema, Visconde do Rio Branco)
Eler, J.P., Silva, J.A.I.I., Evans, J.L., 2004. Additive genetic relationships between heifer pregnancy and scrotal circumference in Nellore cattle, Journal of Animal Science, 82, 2519–2527
Franco, M.O., Detmann, E., Valadares Filho, S.C., Batista, E.D., Rufino, L.M.A., Barbosa, M.M., Lopes, A.R., 2017. Intake, digestibility, and rumen and metabolic characteristics of cattle fed low-quality tropical forage and supplemented with nitrogen and different levels of starch, Asian-Australasian Journal of Animal Sciences, 30, 797–803
Hafez, E.S.E., Hafez, B., 2004. Reprodução animal, (Manole, São Paulo)
Hall, J.B., Staigmiller, R.B., Bellows, R.A., 1995. Body composition and metabolic profiles associated with puberty in beef heifers, Journal of Animal Science, 73, 3409–3420
Lazzarini, Í., Detmann, E., Sampaio, C.B., 2009. Dinâmicas de transito e degradação da fibra em detergente neutro em bovinos alimentados com forragem tropical de baixa qualidade e compostos nitrogenados, Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 61, 635–647
Menegaz, A.L., Lobato, J.F., Pereira, A.C., 2008. Influência do manejo alimentar no ganho de peso e no desempenho reprodutivo de novilhas de corte, Revista Brasileira de Zootecnia, 37, 1844–1852
Paulino, M.F., Figueiredo, D.M., Moraes, E.H.B.K., 2004. Suplementação de bovinos em pastagens: uma visão sistêmica. In: Symposium of beef cattle production, Viçosa, 2004, (Federal University of Viçosa, Viçosa), 93–139
Paulino, M.F., Detmann, E., Valadares Filho, S.C., 2008. Bovinocultura funcional nos trópicos. In: Symposium of beef cattle production, Viçosa, 2008, (Federal University of Viçosa, Viçosa), 275–305
Pires, A.V., Ribeiro, C.V.M., Susin, I., 2010. Aspectos Nutricionais na Reprodução de Bovinos de Corte. In: Bovinocultura de Corte, Piracicaba, 2010, (FEALQ, Piracicaba), 585–610
Sampaio, C.B., Detmann, E., Paulino, M.F., 2010. Intake and digestibility in cattle fed low-quality tropical forage and supplemented with nitrogenous compounds, Tropical Animal Health and Production, 42, 1471–1479
Silva, J.A.I.I.V., Dias, L.T., Albuquerque, L.G., 2005. Estudo Genético da Precocidade Sexual de Novilhas em um Rebanho Nelore, Revista Brasileira de Zootecnia, 34, 1568–1572
Silva, A.G., Paulino, M.F., Amorim, L.S., Rennó, L.N., Detmann, E., Moura, F.H., Manso, M.R., Paiva, P.H.S., Ortega, R.E.M., Melo, L.P., 2017. Performance, endocrine, metabolic, and reproductive responses of Nellore heifers submitted to different supplementation levels pre- and post-weaning, Tropical Animal Health and Production, 49, 707–715
Souza, N.K.P., Detmann, E., Pina, P.S., 2013. Evaluation of chromium concentration in cattle feces using different acid digestión and spectrophotometric quantification techniques, Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 65, 1472–1482
Titgemeyer, E.C., Armendariz, C.K., Bindel, D.J., 2001. Evaluation of titanium dioxide as a digestibility marker for cattle, Journal of Animal Science, 79, 1059–1063
Valente, T.N.P., Detmann, E., Queiroz, A.C., 2011. Evaluation of rumen degradation profiles of forages using bags made from different textiles, Revista Brasileira de Zootecnia, 40, 2565–2573
Walsh, R.B., Walton, J.S., Kelton, D.F., 2007. The effect of subclinical ketosis in early lactation on reproductive performance of postpartum dairy cows, Journal of Dairy Science, 90, 2788–2796
Weindruch, R., Kayo, T., Lee, C.W., 2001. Microarray profiling of gene expression in aging and its alteration by caloric restriction in mice, Journal of Nutrition, 131, 918–923
Funding
We are grateful to Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), and Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) for supporting this study.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
All animal care and handling procedures were approved by the Animal Care and Use Committee of the Universidade Federal de Viçosa, Brazil (protocol CEUAP-UFV 0008).
Conflict of interest
The authors declare that they have no conflict of interest.
Rights and permissions
About this article
Cite this article
de Almeida, D.M., Marcondes, M.I., Rennó, L.N. et al. Nutritional planning for Nellore heifers post-weaning to conception at 15 months of age: performance and nutritional, metabolic, and reproductive responses. Trop Anim Health Prod 51, 79–87 (2019). https://doi.org/10.1007/s11250-018-1662-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11250-018-1662-z