Days of occupation on crossbred cows milk production in a rotational grazing system tropical

Revista Brasileira de Zootecnia

Lima, Maria Lúcia Pereira³  Simili, Flávia Fernanda²  Pinheiro, Maria da Graça³  Leme, Paulo Roberto⁴  Santos, Andréa Luciana dos²  Berchielli, Telma Teresinha¹  Lima, Nilson Carlos¹  Malheiros, Euclides Braga¹  Nogueira, José Ramos³ 

[1] Unesp, Jaboticabal;UNESP, Jaboticabal;Instituto de Zootecnia, Ribeirão Preto;USP, Pirassununga

关键词: elephantgrass;    Panicum maximum Jacq;    Pennisetum purpureum Schum;    Tanzaniagrass    IntroduçãoO uso de sistemas de pastejo rotacionado tem aumentado em fazendas destinadas à produção leiteira;    no intuito de melhorar a qualidade da forragem ofertada aos animais e aumentar a lotação;    reduzindo os custos de produção;   

DOI  :  10.1590/S1516-35982005000300038

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The study was carried out to observe the fluctuation of milk yield of crossbred cows in two rotational grazing systems of elephant grass cv. Guaçu (Pennisetum purpureum Schum and Tanzaniagrass (Panicum maximum Jacq.), according of period of occupation (2 days of occupation with 40 days resting and 3 days of occupation with 33 days resting, respectively), fertilized with 200 kg of N/ha/year. Nineteen paddocks of elephantgrass and 15 of Tanzaniagrass were studied. The statistical analysis was performed considering lactation phase of cows, paddocks and days of occupation. For elephantgrass there was an interaction effect of lactation phase and days of occupation, but no difference was observed for days of occupation. Averages of daily milk yield were 10.3 ± 3.3 and 10.4 ± 3.2 kg/day for 1st and 2nd of days of occupation, respectively. For Tanzaniagrass there was a significant effect for milk yield, according to days of occupation and for interaction of paddocks and days of occupation. The averages of daily milk yield were 10.6 ± 3.0; 11.0 ± 3.1; 10.6± 3.16 kg/cow/day for 1st, 2nd and 3rd days of occupation, respectively.

【 授权许可】

CC BY-NC