Quantities and qualities characteristics and their effects upon the growth of lambs on four management height in coast cross (Cynodon dactylon (L.) Pears. cv Coast cross 1) sward

Authors

  • Diorande Bianchini Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Nova Odessa, SP
  • Américo Garcia da Silva Sobrinho Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Zootecnia de Ruminantes, Jaboticabal, SP
  • Joaquim Carlos Werner Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Nova Odessa, SP
  • Sérgio do Nascimento Kronka Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Ciências Exatas, Jaboticabal, SP
  • Frederico Fontoura Leinz Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Nova Odessa, SP

Keywords:

Coast-cross, height levels, splitted rotational grazed, forage disponibility, crude protein, IVDMD, lamb liveweight gain

Abstract

This research was conducted at Itapetininga (23º35'30"S, 48º03'11" and mean altitude of 670 m), São Paulo State, Brazil, from December, 07 1996 to March, 22 1997, in order to compare four management height in the quantities and qualities characteristics of the coast cross sward and their effects upon the lamb liveweight gains. It was used lambs four months old in average and an average weight of 18.7 kg. The experimental design was in randomised blocks with four replications. The height treatment management were: TI = 5.5 cm, T2 = 11.5 cm, T3=17.5 cm and T4=23.5 cm. The paddock was splitted into five strips that were grazed in a rotational system with seven days of grazing and 28 resting. The mean available forage at grazing initiation (1914, 2194, 2679 and 2825 kg DM/ha) showed 10.1; 10.8;  8.3 and 8.6% of CP and 45.5; 47.9; 44.0 and 43.5% of IVDMD for 5.5; 11.5; 17.5 and 23.5 cm, respectively. In relation to the mean available forage at grazing initiation, differences were detected between 23.5 and 5.5 cm (P<0.05). For CP differences (P<0,05) were detected between 5.5 and 27.5 cm; 5.5 and 23.5 cm; 11.5 and 17.5 cm; and 11.5 and 23.5 cm. For IVDMD differences (P<0.05) were detected between 11.5 and 17.5 cm, and 11.5 and 23.5 cm. The DLW gains were 49.8; 49.4; 51.6 and 71.6 g/animal for 5.5; 11.5; 17.5; and 23.5 cm, respectively. The sward managed in heights above 17.5 cm showed reduction in the CP and IVDMD.

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Published

2013-12-04

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Quantities and qualities characteristics and their effects upon the growth of lambs on four management height in coast cross (Cynodon dactylon (L.) Pears. cv Coast cross 1) sward. (2013). Bulletin of Animal Husbandry, 55(1), 63-69. http://bia.iz.sp.gov.br/index.php/bia/article/view/939

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