Management and nutrition strategies to reduce the breeding season in beef cows (1998)
- Authors:
- USP affiliated authors: MEIRELLES, CYRO FERREIRA - CENA ; VITTI, DORINHA MIRIAM SILBER SCHMIDT - CENA ; ABDALLA, ADIBE LUIZ - CENA
- Unidade: CENA
- DOI: 10.1590/s1413-95961998000300010
- Subjects: NUTRIÇÃO ANIMAL; PASTAGENS
- Language: Inglês
- Abstract: Effects of temporary calf removal and phosphorus supplementation on conception rate in a 60 or 120 day breeding season period was observed in several trials conducted over three years on Nelore cows. Experiment I involved 47 acyclic Nelore cowswith suckling calves ranging in age from 55 to 70 days. Calves were temporarily removed from their dams for 48h at the beginning of the trail or stayed with the dams throughout the trial. The proportion of cows that cycled during the breedingseason was 5 out of 25 (20%) in the control group and 15 out of 22 (68%) in the group whose calves had been removed (p<0,05). In Experiment II, 66 acyclic Nelore cows, averaging 60±0,57 (x±SE) days post-partum were allocated at random in threegroups as follows: A, calves temporarily removed from their dams for 48 h on the first day of the breeding season; B, similar to Group A, except that calves were removed for 72h and C, control group (no calf removal). The percentage of pregnantcows at the end of the breeding season was 54.6 in control cows compared with 50.0 in the 48h removal group and 63.6 in the 72h removal group. In Experiment III, 75 pregnant cows were selected in the final trimester of gestation. Cows wereallocated at random in four groups: Group A, the cows received a free choice mineral mixture with 12% P during three months before and three months after the calving season, furthermore, calves were temporarily removed from their dams on firstdayof breeding season for a period of 96h; B, same as Group A, except that the calves were not removed; C, same as Group A, except that the mineral mixture had 8,8% P; and D: same as Group C, except no calf removal. More cows receiving 12% Pwere cycling (p<0.05) at 30, 60 and 90 days into the breeding season. Under these trial conditions, restricted suckling for 48, 72 or 96h prior to the breeding season caused inconsistent results on pregnancy rates. continua .. ) However, the restricted suckling of cows with marginal range plasma phosphorus (<4.0 mg/100 ml) enhanced ovarian function
- Imprenta:
- Source:
- Título: Brazilian Journal of Veterinary Research and Animal Science
- Volume/Número/Paginação/Ano: v.35, n.3, p.143-147, 1998
- Este periódico é de acesso aberto
- Este artigo NÃO é de acesso aberto
-
ABNT
MEIRELLES, Cyro Ferreira e VITTI, Dorinha Miriam Silber Schmidt e ABDALLA, Adibe Luiz. Management and nutrition strategies to reduce the breeding season in beef cows. Brazilian Journal of Veterinary Research and Animal Science, v. 35, n. 3, p. 143-147, 1998Tradução . . Disponível em: https://doi.org/10.1590/s1413-95961998000300010. Acesso em: 25 fev. 2026. -
APA
Meirelles, C. F., Vitti, D. M. S. S., & Abdalla, A. L. (1998). Management and nutrition strategies to reduce the breeding season in beef cows. Brazilian Journal of Veterinary Research and Animal Science, 35( 3), 143-147. doi:10.1590/s1413-95961998000300010 -
NLM
Meirelles CF, Vitti DMSS, Abdalla AL. Management and nutrition strategies to reduce the breeding season in beef cows [Internet]. Brazilian Journal of Veterinary Research and Animal Science. 1998 ;35( 3): 143-147.[citado 2026 fev. 25 ] Available from: https://doi.org/10.1590/s1413-95961998000300010 -
Vancouver
Meirelles CF, Vitti DMSS, Abdalla AL. Management and nutrition strategies to reduce the breeding season in beef cows [Internet]. Brazilian Journal of Veterinary Research and Animal Science. 1998 ;35( 3): 143-147.[citado 2026 fev. 25 ] Available from: https://doi.org/10.1590/s1413-95961998000300010 - Disponibilidade biologica do fosforo de tres fertilizantes em comparacao com o fosfato bicalcico para bovinos pela tecnica de diluicao isotopica
- Fontes alternativas de fósforo para ruminantes
- Atividade ovariana de bovinos
- Reinício da atividade ovariana no pós-parto e teores de fósforo no plasma e fezes em vacas holandesas
- Efeito da separacao temporaria do bezerro na atividade ovariana em vacas nelore (bos indicus)
- Reproductive performance and nutritional status of Holstein cows in Brazil
- Estudo preliminar da performance reprodutiva de vacas em dois rebanhos leiteiros na regiao de Piracicaba, SP
- Performance reprodutiva de vacas leiteiras
- Estudo da atividade ovariana no pos-parto, parametros sanguineos e reprodutivos em vacas holandesas
- Efeito da remocao do bezerro por 48h sobre a eficiencia reprodutiva, parametros sanguineos e peso corporal em vacas nelore
Informações sobre o DOI: 10.1590/s1413-95961998000300010 (Fonte: oaDOI API)
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