Influência do manejo de mamada sobre o retorno ao estro em ovelhas no pós-parto

Assis, Roberta de Moura; Pérez, Juan Ramón Olalquiaga; Souza, José Camisão de; Leite, Rafael Fernandes; Carvalho, José Rodolfo Reis de

doi:10.1590/s1413-70542011000500020

Cited by 5 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results indicate that this management strategy did not affect the recovery of the ewes until the weaning. Assis et al (2011) studied Santa Inês and Bergamácia ewes subjected to one of the following three suckling regimens that started at 15 days postpartum and ended at weaning at 60 days: continuous suckling; controlled suckling with two daily suckling sessions, where the ewes were kept in a pasture during the day and in a pen during the night; and controlled suckling with a daily suckling session, where the ewes were kept in a pasture during the day and in a pen with their lambs during night. Weight and extracorporeal circulation were not influenced by the suckling management strategies used in the study.…”

Section: Postpartum Body Conditionmentioning

confidence: 99%

“…Early weaning and controlled suckling reduced the interval between lambing and first ovulation compared with continuous suckling (39.0, 41.9, and 52.6, days, respectively). Assis et al (2011) assessed the return to estrus in Santa Inês and Bergamácia ewes. These authors compared the regimen of continuous suckling, suckling limited to twice daily or suckling only at night.…”

Section: Sucklingmentioning

confidence: 99%

“…A reduced postpartum anestrus was observed in Pelibuey (MORALES-TERÁN et al, 2004) and Santa Inês (ASSIS et al, 2011) ewes subjected to controlled sucking and in Préalpes de Sud (SCHIRAR et al, 1989) and Pelibuey (HERNANDEZ et al, 2009) ewes subjected to early weaning compared with ewes subjected to continuous suckling. These findings suggest that manipulating the suckling stimulus is an alternative management strategy that provides the quickest resumption of cyclic ovarian activity in these postpartum animals.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Resumption of cyclic ovarian activity in postpartum ewes: a review

Ascari

Alves

et al. 2016

Sem. Ci. Agr.

View full text Add to dashboard Cite

The reproduction rate is considered a crucial factor that affects the ability of producers to meet the growing demand for ovines meat, and optimizing this factor will maximize the production rate and increase the efficiency of livestock. A reduction in the length of the postpartum anestrus period results in a shorter interval between lambing and conception and enables more lambs to be produced throughout the life of a ewe. This review discusses the current knowledge of several factors associated with the resumption of cyclic ovarian function in postpartum ewes and how the suckling management of ewes may affect this process. Factors that influence the resumption of cyclic ovarian activity include uterine involution, follicular development, occurrence of silent ovulation and short estrous cycles, breed, reproductive seasonality, nutrition and lactation. Controlled suckling and early weaning are management practices that may be used to obtain three lambings in a 24-month period. In the majority of the studies the interval between lambing and first estrus was reduced when a controlled suckling management strategy was used, therefore the controlled suckling appears to be the best alternative because it has produced good results and is easy to implement. Currently, however, this practice is still not widely used. Key words: Controlled suckling. Early weaning. Follicular development. Nutrition. ResumoA taxa de reprodução é considerado um fator crucial que afeta a capacidade dos produtores em atender a crescente demanda por carne ovina e otimizar esse fator pode maximizar a taxa de produção e aumentar a eficiência da pecuária. A redução da duração do período de anestro pós-parto resulta em um intervalo menor entre a parição e concepção e permite que mais cordeiros sejam produzidos durante toda a vida de uma ovelha. Esta revisão discute o conhecimento atual de vários fatores associados com o retorno da função ovariana cíclica pós-parto em ovelhas e como o regime de amamentação de ovelhas podem afetar esse processo. Fatores que influenciam o retomada da atividade ovariana cíclica incluem involução uterina, o desenvolvimento folicular, a ocorrência de ovulação silênciosa e ciclos estrais curtos, raça, sazonalidade reprodutiva, nutrição e lactação. A amamentação controlada e o desmame precoce são práticas de manejo que podem ser utilizados para se obter três partos em um período de 24 meses. Na maioria dos estudos, o intervalo entre o parto e o primeiro estro foi reduzido quando o manejo de amamentação controlada foi utilizado, portanto, a amamentação controlada parece ser a melhor

show abstract

Section: Postpartum Body Conditionmentioning

confidence: 99%

Section: Sucklingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Resumption of cyclic ovarian activity in postpartum ewes: a review

Ascari

Alves

et al. 2016

Sem. Ci. Agr.

View full text Add to dashboard Cite

show abstract

“…Controlled suckling or total separation of lambs after birth represent strategies with the potential to improve herd production rates because they allow the rapid postpartum return of ovarian cyclicity in ewes (Morales-Terán et al, 2004;Hernández et al, 2009;Assis et al, 2011). However, the lamb performance until weaning may be compromised by these management practices.…”

Section: Introductionmentioning

confidence: 99%

Performance and serum cortisol concentration in Santa Inês lambs under different suckling schemes

Alves

Ascari

et al. 2016

R. Bras. Zootec.

View full text Add to dashboard Cite

-The objective of this study was to examine the effects of suckling schemes (continued, controlled, and total separation) and the type of pregnancy on performance and serum cortisol concentration in lambs. A total of 29 Santa Inês ewes and 40 lambs were used, and the randomized block design was applied in a split-plot scheme with a 3 × 2 factorial arrangement in the plot and time in the subplot. For controlled suckling, the diet was supplied twice daily during one hour, starting on their 10th day of life. Total and average daily intakes of concentrate dry matter of lambs that underwent total separation was higher than those of lambs under continued suckling. Lambs subjected to total separation demonstrated higher concentrate dry matter intake/weight gain ratio, lower total weight gain, lower average daily weight gain, and lower weaning weight than those subjected to continued and controlled suckling. Lambs from single pregnancy demonstrated higher weight gain and obtained higher weight at weaning. Lambs subjected to total separation have a developmental delay. However, the lower performance of lambs subject to total separation cannot be attributed to stress because there is a decrease in the serum cortisol concentration over time.

show abstract

“…However, ewes under continued breastfeeding, as in creep feeding, may have greater loss of body condition and late return to postpartum estrus. In this case, the controlled or interrupted suckling, in which the lambs have access to breastfeeding at predetermined periods of the day, makes early return to postpartum estrus, ensuring greater efficiency to the production system (Assis et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Performance, carcass traits and costs of Suffolk lambs finishing systems with early weaning and controlled suckling

et al. 2014

View full text Add to dashboard Cite

RESUMO Desempenho, características de carcaça e custos da terminação de cordeiros Suffolk em sistemas com desmame precoce e amamentação controladaO objetivo deste trabalho foi avaliar o desempenho, as características de carcaça e os custos da terminação de cordeiros Suffolk em três sistemas: (1) cordeiros desmamados com 22 kg de peso corporal (PC) e mantidos em pastagem com suplementação concentrada até o abate; (2) cordeiros desmamados com 22 kg de PC e confinados até o abate; (3) cordeiros mantidos em amamentação controlada após atingirem 22 kg de PC e confinados com alimentação em creep feeding até o abate. Os valores de ganho médio diário (GMD) foram 224 g/dia para os cordeiros desmamados e suplementados em pastagem; 386 g/dia para os cordeiros desmamados e confinados, e 481 g/dia para os cordeiros mantidos em amamentação controlada. O peso de corpo vazio e a deposição de gordura visceral foram maiores em The performance, carcass traits and finishing costs of Suffolk lambs were evaluated in three systems: (1) lambs weaned with 22 kg of body weight (BW) and supplemented with concentrate on pasture until slaughter; (2) lambs weaned with 22 kg BW and fed in feedlot until slaughter; (3) lambs maintained in controlled nursing after 22 kg BW and creep fed in feedlot until slaughter. Average daily gain (ADG) was 224 g/d for lambs weaned and supplemented with concentrate on pasture, 386 g/d for lambs weaned in feedlot and 481 g/d for lambs under controlled nursing. Empty body weight and visceral fat deposition were highest in lambs from feedlot systems. Carcass weights and carcass yields were highest for lambs in controlled nursing. Finishing total costs were highest in controlled nursing and lowest in the system with weaning in feedlot. High concentrate diet associated with controlled nursing in feedlot allowed lambs to reach the growth potential and carcasses with higher weights, higher yields and higher fat content. After weaning, lambs in feedlot fed with high concentrate diet had higher weight gain than lambs supplemented with concentrate on pasture. Carcasses produced under these two systems presented the same characteristics. The system with weaning in feedlot showed the lowest cost per kg carcass.

show abstract

Influência do manejo de mamada sobre o retorno ao estro em ovelhas no pós-parto

Cited by 5 publications

References 5 publications

Resumption of cyclic ovarian activity in postpartum ewes: a review

Resumption of cyclic ovarian activity in postpartum ewes: a review

Performance and serum cortisol concentration in Santa Inês lambs under different suckling schemes

Performance, carcass traits and costs of Suffolk lambs finishing systems with early weaning and controlled suckling

Contact Info

Product

Resources

About