Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Effect of buck stimulus on mature and pre-pubertal norgestomet-treated goats
Autore:
Mellado, M; Olivas, R; Ruiz, F;
Indirizzi:
UAAAN, Dept Anim Prod, Saltillo, Coahuila, Mexico UAAAN Saltillo CoahuilaMexico ept Anim Prod, Saltillo, Coahuila, Mexico
Titolo Testata:
SMALL RUMINANT RESEARCH
fascicolo: 3, volume: 36, anno: 2000,
pagine: 269 - 274
SICI:
0921-4488(200006)36:3<269:EOBSOM>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
BREEDING-SEASON; DAIRY GOATS; EWE LAMBS; OVULATION; ESTRUS; PROGESTAGEN; OVARIAN; RAMS; SYNCHRONIZATION; SECRETION;
Keywords:
estrus synchronization; goat; norgestomet; PMSG; buck effect;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Mellado, M UAAAN, Dept Anim Prod, Saltillo, Coahuila, Mexico UAAAN Saltillo Coahuila Mexico od, Saltillo, Coahuila, Mexico
Citazione:
M. Mellado et al., "Effect of buck stimulus on mature and pre-pubertal norgestomet-treated goats", SMALL RUMIN, 36(3), 2000, pp. 269-274

Abstract

Two experiments were conducted to assess the effect of buck exposure to synchronize estrus in mature and pre-pubertal norgestomet-treated crossbred (criollo x dairy breeds) goats. In experiment 1, 100 mature goats (25 per group) under range conditions were either teased at 48 or 24 h before Sincromate-B (SMB; 9 days treatment of 2 mg norgestomet) implant withdrawal. A third group was exposed to bucks 1 day after SMB treatment and another group was only exposed to bucks (control). Does exposed to bucks 1 day after SMB treatment tended to have a lower percentage of estrus (70% compared to 80% and 92% in other groups) and lower pregnancy rate (57.9 compared to 78.3 and82.6 in other groups). At 156 days post-joining a significant (P < 0.05) difference in cumulative kidding percentage was found between does teased 48h before implant removal (88.9%) and does teased 24 h before implant removal (56.3%). Teasing without norgestomet was completely effective at stimulating estrus activity. In experiment 2, pre-pubertal does (n = 36; mean 16.6kg BW) treated with SMB + PMSG + teasing tended to have a higher estrus response than SMB + PMSG treated female goat kids (91.6% vs. 66.6%; P = 0.13). The results of this study indicate that, during the transitional period, the male effect was as effective as the synchronizing treatments involving SMB in inducing estrus in goats with reduced seasonal inhibition of reproduction. Also, buck exposure potentiates the effect of PMSG to induce estrus in norgestomet primed pre-pubertal does. (C) 2000 Elsevier Science B.V. Allrights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 00:29:14