Citas bibligráficas
Mera, E., (2022). Efecto de la harina de manchinga (Brosimum alicastrum) como suplemento alimenticio en la producción y calidad de la leche en vacas cruzadas cebú [Universidad Nacional de San Martín. Fondo Editorial]. http://hdl.handle.net/11458/4610
Mera, E., Efecto de la harina de manchinga (Brosimum alicastrum) como suplemento alimenticio en la producción y calidad de la leche en vacas cruzadas cebú []. PE: Universidad Nacional de San Martín. Fondo Editorial; 2022. http://hdl.handle.net/11458/4610
@misc{renati/1054253,
title = "Efecto de la harina de manchinga (Brosimum alicastrum) como suplemento alimenticio en la producción y calidad de la leche en vacas cruzadas cebú",
author = "Mera Arrascue, Eli Ronald",
publisher = "Universidad Nacional de San Martín. Fondo Editorial",
year = "2022"
}
The objective of this study was to determine the response of milk production to the consumption of manchinga forage (Brosimum alicastrum bolivarense) in the supplementary ration of cows of different breeds under semi-extensive conditions in the Sisa river valley, in the district of Agua Blanca, province of El Dorado, department of San Martín. Between April and May 2019, 10 dairy cows of different breeds (30% Gyr, 20% Holstein ¾, 20% Brahma and 30% Creole) in productive status were tested. A crossover design was used with two groups A and B of five cows each, which were fed intermittently with two supplementary rations: a traditional control treatment (T0), consisting of rice dust (98 %) and salt (2 %), and a treatment with manchinga forage (80 %) at 5 % moisture, dust (16 %), salt (2 %) and urea (2 %) (T1). The treatments were evaluated in two 22-day cycles, in each of which the treatments were interchanged for each animal unit. Milk production, feed ration consumption per animal unit and nutritional quality of the milk were recorded. The mean cumulative milk production per 11-day period was significantly higher in T1 (62.2 l/UA) with respect to the control T0 (56.9 l/UA) (P[t]= 0.38 %), equivalent to an increase of 9.3% due to the effect of the new ration. On the other hand, cumulative feed intake showed highly significant differences (P[t]= 0.38 %) between the first (31 kg/UA) and the second evaluation (32.6 kg/UA). Regarding nutritional quality, fat showed significant differences (P[t]= 0.00 %), protein (P[t]= 0.17 %) and lactose (P[t]= 0.17 %) showed no significant differences, which seems to indicate a pattern of sustained increase in milk consumption and milk production of cows due to the effect of supplementary feeding, independently of the nature of the ration and increase in the percentage of fat in the milk. The results confirm the background that manchinga forage increases milk production in cattle. The crossover design demonstrated a high efficacy as a method to contrast the effect of the feed rations, by decreasing the variability within the experimental units, which were highly variable among themselves.
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