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Effetti della nutrizione pre- e postpartum e della tecnica di allattamento sull'anaestro postpartum nella bovina da carne: la razza sarda nell'ambito dell'European Suckler Cow Project

Marongiu, Maria Laura and San Juan, Luis and Floris, Basilio Remo and Sinclair, Kevin D. and Molle, Giovanni (2000) Effetti della nutrizione pre- e postpartum e della tecnica di allattamento sull'anaestro postpartum nella bovina da carne: la razza sarda nell'ambito dell'European Suckler Cow Project. Large Animals Review, Vol. 6 (2), p. 43-49. ISSN 1124-4593. Article.

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Abstract

The interval from calving to first ovulation is a major factor affecting reproductive and productive efficiency in beef cows. This interval is affected by pre- and postpartum nutrition and suckling technique. The present study sought to examine the interactive effects of pre- and postpartum nutrition and suckling on cow performance and follicle wave dynamics.
The experiment was a 2 x 2 x 2 factorial design, in which factors were, feeding levels before and after calving, and suckling technique (restricted, once-a-day, v. ad libitum access).
Follicle growth was monitored daily from day 21 postpartum until second ovulation occured using transrectal ovarian ultrasonography. Animals were weighed and condition scored at calving and fortnightly thereafter. Milk yelds were determined at week 3, 6 and 9 postpartum.
The interval from calving to first ovulation was reduced in cows whose calves had access to their dams restricted to once daily. Cows clearly responded to prepartum under-nutrition markedly lowering their performance and showing a longer anoestrous period. The effect of post-calving feeding level was much less marked.

Item Type:Article
ID Code:5264
Status:Published
Refereed:Yes
Uncontrolled Keywords:Postpartum anoestrous, beef suckler cow, nutrition level, follicle growth
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/20 Zoocolture
Area 07 - Scienze agrarie e veterinarie > VET/02 Fisiologia veterinaria
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
002 Altri enti e centri di ricerca del Nord Sardegna > Istituto zootecnico e caseario per la Sardegna, Olmedo
001 Università di Sassari > 01 Dipartimenti > Biologia animale
Publisher:Società italiana veterinari per animali da reddito
ISSN:1124-4593
Deposited On:20 Dec 2010 12:54

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