Administração de somatotropina bovina no período pré-parto sobre parâmetros produtivos, sanitários e reprodutivos da primeira lactação de vacas holandesas

Carlos Humberto Corassin; Arlei Coldebella; Paula Marques Meyer; Paulo Fernando Machado; Sérgio Soriano; Laerte Dagher Cassoli; Antônio Carlos Sobreira

doi:10.4025/actascianimsci.v24i0.2524

Bovine somatotropin administration during pre-delivery period to productive, sanitary and reproductive parameters of holstein cows' first lactation

Carlos Humberto Corassin USP
Arlei Coldebella USP
Paula Marques Meyer USP
Paulo Fernando Machado USP
Sérgio Soriano FAZENDA COLORADO - ARARAS/SP
Laerte Dagher Cassoli USP
Antônio Carlos Sobreira FAZENDA COLORADO - ARARAS/SP

DOI: https://doi.org/10.4025/actascianimsci.v24i0.2524

Abstract

The effects of pre-delivery administration of bovine somatotropin (bST) on first lactation performance were evaluated in this study, which involved eighteen Holstein pregnant heifers. Nine animals were supplemented with subcutaneous injections of 500 mg of bST, on days 21 and 9 prior expected delivery, and 9 were not supplemented (control group). Animals were fed total mixed ration, twice daily. Data evaluated in this experiment were related to sanitary, reproductive and productive parameters during first lactation. Administration of bST did not affect parameters related to sanity (retained placenta, metritis, displacement abomasum, milk fever, ketosis), reproduction (follicular cysts). However, heifers supplemented with bST showed changes of body condition score 65% greater, anticipated milk production peak in 9.7 days and decreased number of days in lactation in 21,8 days, compared to the non-supplemented ones (p < 0.05). Milk production peak and milk production corrected for 305 days were not affected by bST administration.

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Author Biography

Carlos Humberto Corassin, USP

Possui graduação em Medicina Veterinária pela Universidade de Marília (1996), Mestrado em Nutrição e Produção Animal pela Universidade de São Paulo (FMVZ/USP -1999) e Doutorado em Ciência Animal e Pastagens pela Universidade de São Paulo (ESALQ/USP- 2004). É Professor Titular no Centro Universitário Monte Serrat (UNIMONTE). Tem experiência na áreas de Medicina Veterinária e Zootecnia, com ênfase em Bovinocultura Leiteira, atuando principalmente com os seguintes temas: bovinos leiteros, qualidade do leite, produção de leite, produção de alimentos seguros, nutrição e clínica de ruminantes,mastite e contagem de células somáticas Currículo Lattes

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Published

2008-04-29

How to Cite

Corassin, C. H., Coldebella, A., Meyer, P. M., Machado, P. F., Soriano, S., Cassoli, L. D., & Sobreira, A. C. (2008). Bovine somatotropin administration during pre-delivery period to productive, sanitary and reproductive parameters of holstein cows’ first lactation. Acta Scientiarum. Animal Sciences, 24, 1045-1051. https://doi.org/10.4025/actascianimsci.v24i0.2524

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Issue

Vol 24 (2002)

Section

Animal Science

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0.9

2019CiteScore

29th percentile