Efeito da carga animal na produção de leite de vacas de corte primíparas e no desenvolvimento de seus bezerros

Fagundes, José Inácio Braccini; Lobato, José Fernando Piva; Schenkel, F.S.

doi:10.1590/s1516-35982004000200019

Cited by 6 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ainda, o lote acometido era composto por novilhas de primeira cria. Vacas jovens ao parir produzem menos leite e desmamam bezerros mais leves do que as vacas mais velhas (Fagundes et al 2004). O insuficiente aporte nutricional dos animais é um fator relacionado a casos de TPB (Silva et al 2007).…”

Section: Discussão E Conclusãounclassified

Babesiose cerebral em bezerros

et al. 2018

View full text Add to dashboard Cite

RESUMO: Babesiose cerebral é uma enfermidade causada pelo protozoário Babesia bovis. O agente faz parte do complexo Tristeza Parasitária Bovina, uma das mais importantes doenças parasitárias em bovinos. O presente estudo relata um surto causado por B. bovis em vinte bezerros de aproximadamente 7 a 25 dias de idade. O surto ocorreu entre março e junho de 2015, na região sul do Brasil, área de instabilidade enzoótica para a Tristeza Parasitária Bovina. O diagnóstico foi realizado pela epidemiologia, lesões macroscópicas e pela presença de numerosas formas parasitárias de Babesia bovis em capilares encefálicos, observados em imprints corados por Giemsa. Surtos de babesiose por B. bovis cerebral nos primeiros dias de vida de bezerros é incomum, porém não pode ser desconsiderada em surtos com alta letalidade em áreas de instabilidade enzoótica.

show abstract

Section: Discussão E Conclusãounclassified

Babesiose cerebral em bezerros

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Fagundes et al (2004) Os valores médios de ganho médio diário e peso vivo aos 14 meses dos animais foram 0,179 kg/dia e 221,0 kg, respectivamente, para os tratamentos cargas animais e idades de desmame. Embora os bezerros manejados no desmame precoce tenham apresentado ganho médio diário e peso vivo aos 180 dias significativamente inferiores aos bezerros do desmame convencional, essa diferença não foi observada no ganho médio diário e peso vivo até 14 meses de idade (P>0,05).…”

Section: No Final Do Acasalamentounclassified

Comportamento reprodutivo de vacas de corte manejadas em pastagem natural com duas cargas animais e duas idades à desmama

Pellegrini

Lopes

2011

R. Bras. Zootec.

View full text Add to dashboard Cite

by weight and body condition at two stocking rates (CA280 = 280 kg LW/ha and CA360 = 360 kg LW/ha). Early weaning was imposed to 26 cows when calves reached average of 100 days of age and conventional weaning, when calves were approximately 180 days old. Cows submitted to early weaning had average daily gain higher than cows submitted to conventional weaning (0.539 vs. 0.257 kg/day, respectively). There was significant interaction between weaning ages and periods for body condition of cows. Cows submitted to early weaning presented higher body condition at conventional weaning (3.5 vs. 2.8) and at the end of mating period (3.0 vs. 2.8) than the conventional weaning. The stocking rate did not significantly affect the average daily gain and body condition of cows (CA280 = 0.101 kg/day, 2.7 and CA360 = 0.214 kg/day, 2.7, respectively). The pregnancy rate of cows under early weaning (60.0%) was significantly better than for those under conventional weaning (12.0%); however, the stocking rates did not differ (CA280 = 7.7% vs. CA360 = 15.4%). In calves submitted to early weaning, average daily gain and live weight at 180 days were significantly lower than those of calves at conventional weaning. The post-partum management of cows and two ages of weaning calves evaluated did not affect the development of calves until 14 months of age.

show abstract

Does supplementation of beef calves by creep feeding systems influence milk production and body condition of the dams?

Lopes

Paulino

Detmann

et al. 2016

Trop Anim Health Prod

View full text Add to dashboard Cite

The aim of this study was to evaluate the effects of beef calves' supplementation in creep feeding systems on milk yield, body weight (BW), and body condition score (BCS) of their dams on tropical pastures using a meta-analytical approach. The database was obtained from 11 experiments conducted between 2009 and 2014 in Brazil, totaling 485 observations (cows). The database consisted of 273 Nellore and 212 crossbred (7/8 Nellore × 1/8 Holstein) cows. All experiments were carried out in the suckling phase (from 3 to 8 months of age of calves) during the transition phase between rainy and dry seasons from February to June of different years. The data were analyzed by a meta-analytical approach using mixed models and taking into account random variation among experiments. Calves' supplementation (P ≥ 0.59) and the calves' sex (P ≥ 0.48) did not affect milk yield of cows. The average fat-corrected milk (FCM) yield was 6.71 and 6.83 kg/day for cows that had their calves supplemented and not supplemented, respectively. Differences were observed (P < 0.0001) for milk yield due to the genetic group where crossbred cows presented greater FCM yield (7.37 kg/day) compared with Nellore cows (6.17 kg/day). There was no effect of the calves' supplementation on BW change (P ≥ 0.11) and BCS change (P ≥ 0.23) of the cows. Therefore, it is concluded that supplementation of beef calves using creep feeding systems in tropical pastures does not affect milk yield, body weight, or body condition of their dams.

show abstract

Efeito da carga animal na produção de leite de vacas de corte primíparas e no desenvolvimento de seus bezerros

Cited by 6 publications

References 10 publications

Babesiose cerebral em bezerros

Babesiose cerebral em bezerros

Comportamento reprodutivo de vacas de corte manejadas em pastagem natural com duas cargas animais e duas idades à desmama

Does supplementation of beef calves by creep feeding systems influence milk production and body condition of the dams?

Contact Info

Product

Resources

About