Activity Summary
The study of strategies for supplementation of cattle grazing in seeking reduction
in distribution costs and rationalizing supplement the use of labor -
presents alternatives for producers to reduce time, labor and demand for
machinery and equipment. The project was developed at the Faculty of Agricultural Sciences
and Veterinary - Unesp, from Jaboticabal Câmpus and are designed to evaluate the performance
animal, the ingestive behavior of animals subjected to different frequencies
supplementation kept in pasture B. brizantha cv. Marandu during
water.
On February 1, 2006, 45 male animals were castrated of Nellore
weighed and divided in 9 batches of 5 animals each. The average weight of the lots was
of 250kg. Each also received a lot animal canulated in the rumen and duodenum.
The animals, along with the animals canulated, received 0.5% of BW / day of a
supplement composed of 60% of corn gluten-60 as a source of protein exhaust,
25% of dry yeast from sugar cane used as palatabilizante and 15% of pulp
citrus as a source of energy. The supplement is provided to 9:00 pm in the morning cochos
plastics.
Lots of animals received the supplement as the frequencies: daily, from the second
to Friday (SS) and the second, Wednesday and Friday (SQS). In the treatment SS, the
supplement on Saturday and Sunday was also divided within days of supplementation,
thus, the animals receive 0.7% of PV from Monday to Friday and processing
SQS, the animals are supplemented with 1.00% of BW every two days.
Preliminary data
Table 1 shows the average body weight and weight gain
Daily animal weights measured in 4 in the period from February 1
the May 17, 2006.
Table 1: Mean values of body weight and weight gain of animals
to different frequencies of supplementation.
Average daily gain, kg / day
* Treatment: SQS = supplementation Monday, Wednesday and Friday; SAS = supplementation
From Monday to Friday; TOD = daily supplementation
Conclusion
You should make a statistical analysis of the data, however, it can be concluded that
There was no effect of frequency of supplementation on weight gain.
The result can be explained because of the high use of nitrogen by
zebu cattle. Thus, to maintain adequate levels of N in the rumen, even in the treatment
is in two days without receiving food.