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Trop Anim Health Prod. 2017 Jun;49(5):1001-1007. doi: 10.1007/s11250-017-1291-y. Epub 2017 Apr 27.

Performance and carcass characteristics of lambs fed diets with increasing levels of Mimosa tenuiflora (Willd.) hay replacing Buffel grass hay.

Author information

1
Department of Animal Science, Federal University of Campina Grande, Patos, Paraíba, 58710-110, Brazil.
2
Department of Animal Science, Federal University of Campina Grande, Patos, Paraíba, 58710-110, Brazil. leilson@ufpi.edu.br.
3
Department of Animal Science, Federal University of Piaui, Bom Jesus, Piaui, 64900-000, Brazil. leilson@ufpi.edu.br.

Abstract

This study evaluated the performance and carcass characteristics of lambs fed diets with increasing levels of Mimosa tenuiflora (Willd.) hay replacing Buffel grass (Cenchrus ciliaris). Twenty-eight Santa Inês male lambs with an average body weight (BW) of 20.3 ± 1.49 kg(mean ± SD) were allocated in individual stalls and distributed in a completely random design with four treatments (0, 20, 40, and 60 g/100 g total DM M. tenuiflora hay replacing Buffel grass hay in diet) with seven replications. M. tenuiflora hay at the level of 20% dry matter (DM) total replacing Buffel grass hay increased final weight (P = 0.006), total weight gain (P < 0.001), average daily weight gain (ADWG; P < 0.001), DM intake (P < 0.001), and feed efficiency (P < 0.001). Intake of crude protein, NDFap, ADFap, ash, ether extract, total and non-fibrous carbohydrates, and total digestible nutrients presented a positive quadratic effect with M. tenuiflora hay replacing Buffel grass hay and 40 g/100 g total DM level presented greater intake. There were positive quadratic effects by M. tenuiflora hay inclusion at 20 g/100 g total DM level on slaughtering weight (P = 0.005), hot carcass weight (P = 0.002), cold carcass weight (P = 0.002), empty body weight (P = 0.001), hot carcass yield (P = 0.002), cold carcass yield (P = 0.003), and increase linear on biological yield (P = 0.003). There was no influence on cooling weight loss (P = 0.284). M. tenuiflora hay may be included in lamb diets at amounts up to 20 g/100 g total DM substitution of Buffel grass hay because increase in the nutrients intake, growth performance, and carcass characteristics.

KEYWORDS:

Carcass yield; Cenchrus ciliaris; Feed efficiency; Legumes; Tannin

PMID:
28451855
DOI:
10.1007/s11250-017-1291-y
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