Evaluación de los parámetros reproductivos i.a.t.f. y monta natural en bovinos de carne en la hacienda "bonita maría".

Abstract

The demand for beef in the agricultural sector in the country is high, driving cattle farmers to improve production through biotechnologies for genetic improvement, which guarantees reproductive efficiency and benefits the country's economy. The efficiency of cattle production is related to reproduction, influenced by factors such as environment, feeding, health and management. Natural mating is a traditional method of reproduction where the bull covers the females in heat to achieve a high pregnancy rate, without direct human intervention and Fixed-Time Artificial Insemination allows programming the insemination without depending on it occurring naturally, using hormones to induce the estrous cycle, ovulation and synchronize the insemination. This research work was carried out at Hacienda Bonita Maria located in Santa Rosa Canton, El Oro Province, Ecuador. The objective was to evaluate the reproductive parameters in beef cattle through the methods of artificial insemination at fixed time and natural mating to observe the pregnancy rate at the "Bonita Maria" farm. For this purpose, 400 bovine females were used, two groups of 100 females for natural mating and two groups of 100 for artificial insemination at fixed time in the months of December-January and April-May, each batch of females was divided into 50 Brahman and 50 Braford cows, These animals received nutritional supplements and the same feed. In the case of the males, they received a reconstituent-coadjuvant in sterility treatments and a vitamin-mineral product.