EFEITOS DA INCLUSÃO DE ÁCIDOS GRAXOS INSATURADOS NO SUPLEMENTO DE VACAS PRIMÍPARAS ZEBUÍNAS SOBRE O DESEMPENHO PRODUTIVO E REPRODUTIVO
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2009-02-26
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Universidade Federal de Goiás
Resumo
Were used primiparous cows, zebuine, calved than received in the postpartum
period, low intake isoenergetic supplements, in pasture of Brachiaria brizantha cv.
Marandu, with twenty cows per treatment in a randomized design, where FA: the
low intake supplement (LIS) with inclusion of protected fat, CO: LIS with the
inclusion of meal corn and MS: only mineral supplement. Evaluated the body
weight of cows (BW) of calves (BWC) and body condition score (BCS) of cows inthe postpartum period, at every 28 days, effect of sex of calf in the BW medium
(BWm) and in the BCS medium (BCSm) of cows, the average daily weight gain of
cows (ADWG) and calves (ADWGC) and pregnancy rate (PR). The
supplementation increased the BW of the cows in FA and CO without difference
between them (P> 0.05), already the MI did not differ from SM de108 to 136 days
postpartum (P> 0.05). The BWC of FA and CO did not differ (P> 0.05) among
them and were higher (P <0.05) than the MS 108 until 192 days postpartum, and
heavier at weaning. The cows of FA had BCS higher (P <0.05) than the other
treatments from 80 to 192 days postpartum. The ADWG of FA and CO did not
differ among them (P> 0.05) and were higher than SM (P <0.05). The ADWGC of
FA and CO were similar (P> 0.06), and higher than SM (P <0.06). Cows that
nursing males had lower BWm and BCSm that those nursing females (P <0.05).
The cows of FA had higher PR (P <0.01)
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GODOY, Marcelo Marcondes de. Effects of inclusion of unsatured fatty acids in the supplement of primiparous cows zebuine on productive and reproductive performance. 2009. 85 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2009.