Precision Betacarotene Supplementation Enhanced Ovarian Function and the LH Release Pattern in Yearling Crossbred Anestrous Goats
| Autor: | Cristina García-De la Peña, Dominique Blache, Santiago Zuñiga-Garcia, Francisco G. Véliz-Deras, Cesar A. Meza-Herrera, Noé M Lopez-Flores, Carlos C. Pérez-Marín, G. Arellano-Rodriguez, Cayetano Navarrete-Molina, Cesar A. Rosales-Nieto |
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| Rok vydání: | 2020 |
| Předmět: |
goats
Release pattern media_common.quotation_subject Live weight reproductive efficiency Crossbreed Article 03 medical and health sciences Animal science Ovarian function lcsh:Zoology targeted supplementation lcsh:QL1-991 Ovulation 030304 developmental biology media_common 0303 health sciences lcsh:Veterinary medicine General Veterinary Chemistry Targeted supplementation Goats 0402 animal and dairy science 04 agricultural and veterinary sciences Lh pulsatility Antral follicle 040201 dairy & animal science beta-carotene Beta-carotene Reproductive efficiency lcsh:SF600-1100 Animal Science and Zoology Blood sampling |
| Zdroj: | Animals 10(4), 659 (2020) Helvia. Repositorio Institucional de la Universidad de Córdoba instname Animals Volume 10 Issue 4 Animals, Vol 10, Iss 659, p 659 (2020) Animals : an Open Access Journal from MDPI |
| Popis: | The possible out-of-season effect of beta-carotene supplementation on ovulation rate (OR), antral follicles (AFN), and total ovarian activity (TOA = OR + AFN) as related to the LH release pattern in yearling anestrous goats was evaluated. In late April, Alpine-Saanen-Nubian x Criollo goats (n = 22, 26 N) were randomly allotted to: (1) Beta-carotene (BETA n = 10, orally supplemented with 50 mg/goat/d 36.4 ± 1.07 kg live weight (LW), 3.5 ± 0.20 units, body condition score (BCS) or (2) Non-supplemented (CONT n = 12, 35.2 ± 1.07 kg LW, 3.4 ± 0.2 units BCS). Upon estrus synchronization, an intensive blood sampling (6 h × 15 min) was accomplished in May for LH quantifications response variables included (pulsatility-PULSE, time to first pulse-TTFP, amplitude-AMPL, nadir-NAD and area under the curve-AUC). Thereafter, an ultrasonography scanning was completed to assess OR and AFN. The Munro algorithm was used to quantify LH pulsatility if significant effects of time, treatment or interaction were identified, data were compared across time. Neither LW nor BCS (p > 0.05) or even the LH (p > 0.05) PULSE (4.1 ± 0.9 pulses/6 h), NAD (0.47 ± 0.13 ng) and AUC (51.7 ± 18.6 units) differed between treatments. Nonetheless, OR (1.57 vs. 0.87 ± 0.18 units) and TOA (3.44 vs. 1.87 ± 0.45 units) escorted by a reduced TTFP (33 vs. 126 ± 31.9 min) and an increased AMPL (0.55 vs. 0.24 ± 0.9 ng), favored to the BETA supplemented group (p < 0.05), possibly through a GnRH-LH enhanced pathway and(or) a direct effect at ovarian level. Results are relevant to speed-up the out-of-season reproductive outcomes in goats while may embrace translational applications. |
| Databáze: | OpenAIRE |
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