El calcio y el fósforo en el comportamiento productivo de gallinas ponedoras comerciales.

Abstract

The objective of this paper was to describe the behavior of the calcium and phosphorus in the diet of commercial laying hens which nutrition accounts for 65 to 70% of the total cost of production in the poultry farm. The different investigations indicated that calcium and phosphorus are two essential minerals in the nutrition of laying hens since they perform very necessary functions such as: the maintenance of the structure of the skeleton and the good formation of the egg shell. Regarding the granulometry of calcium, it was stated that by including 75% limestone with a diameter of 1.82mm in the diet, it improves food consumption and the rate of egg production. Therefore, the relationship of calcium and phosphorus in the diet of laying hens presented an increase in the productive parameters, and the following results were obtained: food consumption with a mean of 92.07gr and a standard deviation of ± 0.81. Regarding food conversion, a mean of 1.70 with a standard deviation of ± 0.27 was obtained. In relation to the egg weight a mean of 63.32g and a standard deviation of ± 5.20 was obtained. With respect to the thickness of the shell presented a mean of 0.40mm and a standard deviation of ± 0.03. Regarding the percentage of production, a mean of 68.21% and a standard deviation of ± 15.56. Finally, according to the Benefit / Cost variable, a mean of $ 1.13 and a standard deviation of ± 0.07 were obtained; this means that for every dollar invested, a profit of 0.13ctvs is obtained. It is concluded that, by using optimal percentages of calcium and phosphorus in the diet, an increase in the productive parameters and a good quality in the eggshell is ensured.