COMPARISON OF PREGNANCY RATE IN PRIMIPAROUS BOVINE FEMALES WITH DIFFERENT TYPES OF SUPPLEMENTATION: AN INTEGRATIVE REVIEW

Abstract

Nutrition is fundamental for the productivity and efficiency of cattle farming, which acts directly on puberty, and on the fertility of bovine females, as well as on the quality of the meat produced. To meet these requirements, several nutritional management strategies, such as continuous supplementation, stratified supplementation or intensive systems, have been successfully implemented, promoting the anticipation of puberty and improving reproductive efficiency. In this scenario, nutritional supplementation stands out as an essential tool to optimize herd performance and ensure more satisfactory results. Therefore, this integrative review aimed to compare the pregnancy rate in primiparous bovine females in different studies submitted to different types of nutritional supplementation. The results indicated that post-weaning supplementation plays an essential role, being associated with better endocrine responses, larger follicular diameter and higher pregnancy rate. However, practices such as creep feeding, despite improving calf weight gain, have shown limitations in terms of direct impact on cow fertility. Therefore, adequate nutritional strategies adjusted to the specific needs of females in different phases of the production cycle, combined with regularity in administration, is essential to ensure robust metabolic health, reproductive efficiency and greater sustainability in livestock.