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- Title
Consumption and digestibility of dry matter in heifers with multiple supplements on grazing.
- Authors
Del Valle Moreno, Ricardo J.; Garcés Cárdenas, Javier E.; Maza Angulo, Libardo A.
- Abstract
Background: supplementation in rearing heifers can be an alternative to improve the efficiency of grazing systems when protein supplements are used. Objective: to evaluates the effect of different amount of supplement in heifers in relation to the consumption and digestibility of food in the Colombian low tropics. Methods: the study lasted 107 days from June to September. 24 heifers were used during the rearing period‚ with average weights of 152 kg ± 14.8 kg. The experiment was carried out according to a completely random design‚ distributed in 4 treatments and 6 repetitions‚ an analysis of variance was used‚ with a supplement supply of 19 % crude protein in different amounts: (T0)‚ 0 gr of supplement + 50 grams of mineral/animal salt; T1‚ 3 gr of supplement/kg of live weight; T2‚ 6 gr of supplement/kg of live weight; T3‚ 9 gr of supplement/kg of live weight. Result: heifers supplemented with different levels of inclusion showed a higher consumption of digestible dry matter‚ digestibility of organic matter and consumption of crude protein (p < 0.05)‚ with a linear behavior depending on the DMS‚ DPB‚ CEE‚ CCNF levels‚ CPB %‚ CE %‚ MSdig2‚ NDT kg‚ NDT % p < 0.05). Conclusions: the productive behavior of the supplemented animals with the non- supplemented ones was higher in the experimental period. The results indicate that as the level of supplementation increases for 0.3 gr and 0.6 gr/ kg of live weight‚ heifers improve productive and economic performance.
- Subjects
HEIFERS; GRAZING; FOOD consumption; MINERAL supplements; ROTATIONAL grazing; ANIMAL behavior
- Publication
Revista Colombiana de Ciencias Pecuarias, 2024, Vol 37, p93
- ISSN
0120-0690
- Publication type
Article