Digestibility, ingestive behaviour and performance of non-descript breed hair lambs of different sexual classes subjected to feed restriction

• Autorzy: de Souza Rodrigues R.T. , Chizzotti M. L. , Rodrigues Martins S. , Avila Queiroz M. A. , Costa Busato K.
• Języki publikacji: EN

Abstrakty

EN

The aim of this work was to evaluate the effect of feed restriction and sexual classes on digestibility, ingestive behaviour and performance of nondescript breed hair lambs. Forty-five animals (15 males, 15 castrated males and 15 females) were distributed in a completely randomized 3 x 3 factorial design, with three feeding levels: ad libitum feeding (positive energy balance), 70% restriction of the ad libitum intake (maintenance level) and 80% restriction of the ad libitum intake (negative energy balance). For all variables, there was no effect of sexual class nor interaction of sexual class with feeding levels (P > 0.05). Animals fed restricted diets had a higher rumination time per unit of dry matter intake (P < 0.05). Digestibility was higher in feed-restricted lambs (P < 0.05). Weight gain and feed efficiency were lower for feed restriction (P < 0.05). Sexual class did not affect intake, digestibility, ingestive behaviour, or performance. Feed restriction affected digestibility and ingestive behaviour

• Wydawca: -
• Czasopismo: Journal of Animal and Feed Sciences
• Rocznik: 2014
• Tom: 23
• Numer: 2
• Opis fizyczny: p.117-123,ref.

Twórcy

autor

de Souza Rodrigues R.T.

• Department of Animal Science – UNIVASF Petrolina, Federal University of Sao Francisco Valley, Pernambuco 56300-990, Brazil
• Department of Zootecnia Lavras, Federal University of Lavras – UFLA, Minas Gerais 37200-000, Brazil

autor

Chizzotti M. L.

• Department of Zootecnia Lavras, Federal University of Lavras – UFLA, Minas Gerais 37200-000, Brazil

autor

Rodrigues Martins S.

• Department of Animal Science – UNIVASF Petrolina, Federal University of Sao Francisco Valley, Pernambuco 56300-990, Brazil

autor

Avila Queiroz M. A.

• Department of Animal Science – UNIVASF Petrolina, Federal University of Sao Francisco Valley, Pernambuco 56300-990, Brazil

autor

Costa Busato K.

• Department of Zootecnia Lavras, Federal University of Lavras – UFLA, Minas Gerais 37200-000, Brazil

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