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Efecto de la suplementación con Saccharomyces cerevisiae sobre la producción de leche al inicio de la lactancia en vacas lecheras
| Content Provider | Semantic Scholar |
|---|---|
| Author | Rivas, José Díaz, Thaís Hahn, Martin Bastidas, Pedro |
| Copyright Year | 2008 |
| Abstract | The aim of this study was to determine the strategic use of Saccharomyces cerevisiae (SC) from onset of lactation and its effect on milk and fat production in Holstein (H) and Carora (C) cows located in the mountain area of Merida state, Venezuela. Forty-one H and fifteen C cows were assigned to two treatments: Experimental group (EG; H=22 and C=8) fed with 10 g/d of SC and Control group (CG; H=19 and C=7), which did not received any supplement for a period of 105 d postpartum (DPP). Carora cows grazed pastures of Panicum maximum, whereas H cows had access to pastures of Pennisetum clandestinum. All cows were fed at milking with a concentrate mixture (20% CP and 77% TND) at a ratio of 1 kg:3 kg of milk. Milk production was measured weekly during 15 weeks and fat milk during the first six weeks post calving. Data were analyzed by least squares means and comparison of subclass means were tested for significance using Tukey s procedures. Milk yield was increased (P < 0.05) in H fed with SC, having 165 kg more of accumulated milk yield at 105 DPP than the CG. Also H cows with three or more calvings had higher (P<0.01) accumulated milk yield at 105 DPP (2544.6 ± 84.9 kg) than cows with 1 or 2 calvings (1916 ± 122.4 and 2227.7± 67.9 kg, respectively). There was not a treatment effect in milk yield in C cows. In Holstein cows treated with SC, the accumulated milk fat at six weeks postcalving was 3.4 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://tspace.library.utoronto.ca/bitstream/1807/64298/1/zt08078.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
