Body condition score and serum metabolites and minerals concentrations as indicators of ovarian activity and pregnancy success in goats on rangeland

Aim of the study: To investigate potential differences in ovarian structures relative to serum metabolite and mineral concentrations at mating. Also, body condition score (BCS), metabolites, profiling mating were compared between pregnant non-pregnant goats.
 Area Hot zone northern Mexico (26 °N).
 Material methods: Mixed-breed goats (n= 89) on arid rangeland exposed bucks during non-breeding season. Ovarian recorded ten days after breeding using ultrasonography. Pregnancy was detected 30 120 post-mating. BCS, blood minerals determined mating.
 Main results: Pregnant had higher BCS than goats. The mean glucose concentration (p<0.05) for that ones (87.3 ± 12.1 vs. 74.4 11.6 mg/dL). Significantly lower (p<0.01) urea nitrogen levels (10.7 3.5 mg/dL) (12.4 3.7 Lower (72.2 6.9 89.4 11.2) non-esterified fatty acids (NEFA; 0.43 0.23 0.18 0.12) significantly associated with pregnancy loss. Higher total protein a greater number larger ovulatory follicles. High phosphorus Goats follicles ≥7.6 mm more likely get smaller follicles.
 Research highlights: Monitoring glucose, nitrogen, NEFA could be used identify risk infertility.