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Morning versus afternoon cutting time of Berseem clover (Trifolium alexandrinum L.) affects feed intake, milk yield and composition in Girgentana goats

Published online by Cambridge University Press:  23 September 2011

Renato Italo Pagano ,
Bernardo Valenti ,
Anna De Angelis ,
Marcella Avondo  and
Pietro Pennisi
Renato Italo Pagano
Affiliation:
Dipartimento di Scienze delle Produzioni Agrarie e Alimentari (DISPA), University of Catania, Italy
Bernardo Valenti
Affiliation:
Dipartimento di Scienze delle Produzioni Agrarie e Alimentari (DISPA), University of Catania, Italy
Anna De Angelis
Affiliation:
Dipartimento di Scienze delle Produzioni Agrarie e Alimentari (DISPA), University of Catania, Italy
Marcella Avondo*
Affiliation:
Dipartimento di Scienze delle Produzioni Agrarie e Alimentari (DISPA), University of Catania, Italy
Pietro Pennisi
Affiliation:
Dipartimento di Scienze delle Produzioni Agrarie e Alimentari (DISPA), University of Catania, Italy
*
*For correspondence; e-mail: [email protected]
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Abstract

Twenty lactating Girgentana goats were used to evaluate the effect of morning v. afternoon cutting time of Berseem clover (Trifolium alexandrinum L.) on feed intake, milk yield and milk composition. Goats were randomly divided into two groups of ten animals, receiving 10 kg of fresh Berseem clover cut at 9.00 (AM group) or 16.00 (PM group), respectively; 500 g of concentrate was given individually to goats before offering forage. Feed intake increased (P<0·01) in the PM group (30·5 v. 25·3 g dry matter/kg body weight), associated with the different nutrient content of diets: lower crude protein but higher dry matter, neutral detergent fibre, water soluble carbohydrates (WSC) and total fatty acids in the PM-harvested forage. Milk production, protein and casein content were higher (P<0·05) in the PM group (1415 g/d, 3·25% and 2·42% v. 1277 g/d, 3·15% and 2·33%, respectively), whereas no differences between groups were detected for milk fat, lactose or urea content. Body weight slowly decreased from the start to the end of the experiment, without differences between groups. This study showed an important milk yield responses in Girgentana goats offered afternoon-cut compared with morning-cut Berseem clover, due to a marked increase in WSC in the afternoon-cut forage.

Keywords

Goatsclovercutting time of daymilk yieldmilk compositionherbage fatty acids
Type
Research Article
Information
Journal of Dairy Research , Volume 78 , Issue 4 , November 2011 , pp. 500 - 504
Copyright
Copyright © Proprietors of Journal of Dairy Research 2011

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