Management and nutrition strategies to reduce the breeding season in beef cows (1998)
- Autores:
- Autores USP: MEIRELLES, CYRO FERREIRA - CENA ; VITTI, DORINHA MIRIAM SILBER SCHMIDT - CENA ; ABDALLA, ADIBE LUIZ - CENA
- Unidade: CENA
- DOI: 10.1590/s1413-95961998000300010
- Assuntos: NUTRIÇÃO ANIMAL; PASTAGENS
- Idioma: Inglês
- Resumo: 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:
- Fonte:
- Título do periódico: 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 é de acesso aberto
- URL de acesso aberto
- Cor do Acesso Aberto: gold
- Licença: cc-by-nc
-
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: 06 maio 2024. -
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 2024 maio 06 ] 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 2024 maio 06 ] Available from: https://doi.org/10.1590/s1413-95961998000300010 - Reinício da atividade ovariana no pós-parto e teores de fósforo no plasma e fezes em vacas holandesas
- Inquerito sobre o reinicio da atividade ovariana no pos-parto de vacas leiteiras atraves de dosagem de progesterona no leite
- Efeito do manejo do bezerro sobre a eficiencia reprodutiva de vacas nelore
- Fontes alternativas de fósforo para ruminantes
- Atividade ovariana de bovinos
- Disponibilidade biologica do fosforo de tres fertilizantes em comparacao com o fosfato bicalcico para bovinos pela tecnica de diluicao isotopica
- Absorcao real do fosforo de diferentes fontes para ovinos , atraves do uso de radiofosforo (p-32)
- Avaliacao do inicio da atividade ovariana no pos-parto, parametros metabolicos e nutricionais em um rebanho leiteiro
- Absorção real do fosforo de fontes nao convencionais por ovinos
- Non-conventional p sources for zebu cows in Brazil
Informações sobre o DOI: 10.1590/s1413-95961998000300010 (Fonte: oaDOI API)
Como citar
A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas
