Feeding Systems with Legumes to Intensify Dairy Farms - cgiar
Feeding Systems with Legumes to Intensify Dairy Farms - cgiar
Feeding Systems with Legumes to Intensify Dairy Farms - cgiar
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Table 2. Quality of milk produced by cows supplemented <strong>with</strong> Cratylia<br />
argentea in a cut-and-carry system and under direct grazing<br />
(Quilichao, Cauca, Colombia).<br />
Treatment<br />
Fat<br />
(%)<br />
Trial 1 Trial 2<br />
NFS a<br />
(%)<br />
17<br />
MUN b<br />
(mg/dL)<br />
Fat<br />
(%)<br />
NFS<br />
(%)<br />
MUN<br />
(mg/dL)<br />
Brachiaria decumbens<br />
3.5 a* 8.0 a 9.8 b 3.6 a 8.2 a 3.0 b<br />
B. decumbens + C. argentea<br />
(cut-and-carry)<br />
3.6 a 8.0 a 33.6 a 3.7 a 8.4 a 11.6 a<br />
B. decumbens + C. argentea<br />
(direct grazing)<br />
3.7 a 8.2 a 27.3 a 3.7 a 8.2 a 12.5 a<br />
a. NFS = non-fat solids.<br />
b. MUN = Milk urea nitrogen.<br />
• * Values in the same column followed by the same letters do not differ<br />
significantly (P < 0.05), according <strong>to</strong> Duncan’s test.<br />
Conclusions<br />
The partial information from these trials indicates that the use of C.<br />
argentea under direct grazing increased milk production the most. Also,<br />
direct supplementation <strong>with</strong> the legume is more viable during the drier<br />
season than during the rainy season because the economic response is<br />
greater when the basal pasture has limited nutrients during the dry season.<br />
References<br />
Avila, P. 1999. Efec<strong>to</strong> de la suplementación con especies forrajeras en la<br />
producción de leche de vacas en pas<strong>to</strong>reo. MSc Thesis in Agricultural<br />
Sciences, <strong>with</strong> emphasis on tropical animal production. Universidad<br />
Nacional de Colombia- Palmira.<br />
Hammond, A. C.; Kunkle, W. E.; and Genho, P. C. 1994. Use of blood urea<br />
nitrogen concentration <strong>to</strong> determine time and level of protein<br />
supplementation in wintering cows. Professional Animal Scientist<br />
10:24-31.<br />
Rivas, L. 1992. El sistema ganadero de doble propósi<strong>to</strong> en América tropical.<br />
Paper presented at the International Symposium on Animal Production<br />
Alternatives and Strategies. Universidad Autónoma de Chapingo, Mexico.