Efecto del polen, lactosa y su combinación sobre los parámetros productivos y digestivos en pollos de engorde

Abstract

In the present investigation the effect of pollen, lactose and its interaction on the productive and digestive parameters of broilers of Cobb 500 genetic line was evaluated. The study was carried out preparing four diets, the first without any additive, the second with pollen 0.5%, the third with 2.5% lactose and finally the fourth with the two aforementioned additives combined and at the same concentration. The experimental diets were administered only during the first two stages of development (pre-initial and initial). 480 animals divided into 40 experimental units (12 chickens per experimental unit), 10 experimental units for each diet were used for the analysis. On day 14 an animal of each experimental unit was sacrificed to take length, weight and pH of the organs of the digestive tract. Variance Analysis and Tukey test were used to process the data obtained. The results obtained in the productive parameters are significant (P> 0.05) for the treatment 2 in the pre-initial stage, obtaining an average of 161.27g in the weight gain, 169.88g in the food consumption, 1.05 for food conversion and mortality of 0%, while in the initial stage the values were significant for treatment 4 (pollen 0.5% + lactose 2.5%), with an average of 486.57g in the gain of weight, 586g in the consumption of food, 1.2 for feed conversion and mortality of 0.83%. In the remaining stages (growth and fattening), there was no significance for any treatment. The final mortality in the chickens that consumed the control diet (T1) (13.04%) had a mortality almost triple for treatment 2 (5.22%) and double in relation to treatment 3 (6.96%) and to treatment 4 (6.09%). Within the digestive parameters we can highlight that the treatment 4 (pollen 0.5% + lactose 2.5%) was significant in the chickens that consumed it, exerting a pH of 5.94 in the duodenum, treatment 3 (lactose 0.5 %) had significance leading to a pH of 5.9 in the blind.