MILK PRODUCTION ON Brachiaria brizantha CIAT 6780 ITSELF AND IN ASSOCIATION WITH Arachis pintoi PASTURE. 1999.

In a simple reversible design, it was compared the association between Brachiaria brizantha cv. Marandu CIAT 6780 and Arachis pintoi cv. Porvenir CIAT 18744 with the pure grass (B. brizantha), over the effect in milk production and other nutritional parameters, as an alternative for a lower cost milk production on double purpose systems. Five cows were chosen for each treatment, with an initial load of 3.0 UA/ha and rotation of 7 for 21 days of occupation and resting. There were cows chosen with the profit of 6.0 kg/animal per day, and these cows were weighted for two consecutive days, they were milked once a day with the calf on its side the milk production was daily measured. In pure grass, as in the associated one, was a 14 days period of adaptation. For seven days period milk was weighted and a sample was taken to determine total solids fat, protein and lactose. At the beginning of each period, the botanical composition was measured and also the forage availability. The associated grass presented a 69.25% of Brachiaria brizantha and 29.75% of Arachis pintoi, in contraposition of pure grass that presented unwanted gramineous. The biggest coverage in associated grass allowed to tolerate 0.43 UA more than pure grass. The nutritional parameters in the association were superior to the pure grass. The fat not corrected milk production, varied from 4.82 to 9.60 kg/cow per day with an average or estimate of 7.26 kg/cow per day. The production increased (P<0.002) passing from the pure to the association grass (from 6.79 to 7.74 kg/cow per day, respectively). On the other hand, on the fat corrected milk, there was not any significative effect (P>0.05). The total solids contents, fat and raw protein were not significant between the treatments (P>0.05); besides, the lactose presented a significant difference (P<0.03). Concerning to the weight increasing, significative difference was not observed (P>0.05). The associated grass utilization allowed the increasing of milk production and lactose content. The economic analysis indicates that under the conditions of these investigations, milk can be produced at $0.19 and $0.21 cost per kilo on the associated and pure grass, respectively.

Bibliographic Details

Main Authors:	Hertentains, Luis A., Santamaría, Eliut, Troetsch, Odenis
Format:	Digital revista
Language:	spa
Published:	Instituto de Innovación Agropecuaria de Panamá 2003
Online Access:	http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/358
Tags:	Add Tag No Tags, Be the first to tag this record!