| Revue: | Revista Brasileira de Zootecnia |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000445585 |
| ISSN: | 1516-3598 |
| Autores: | Fernandez, Hellen de Sousa1 Freitas, Daniela Cristina Rocha de1 Grillo, Gustavo Fernandes1 Silenciato, Lara Nogueira1 Camargo Filho, Sérgio Trabali2 Ferreira, Joaquim Esquerdo3 Palhano, Helcimar Barbosa4 Mello, Marco Roberto Bourg de1 |
| Instituciones: | 1Universidade Federal Rural do Rio de Janeiro, Departamento de Reproducao e Avaliacao Animal, Seropedica, Rio de Janeiro. Brasil 2Empresa de Pesquisa Agropecuaria do Estado do Rio de Janeiro, Seropedica, Rio de Janeiro. Brasil 3Centro Universitario de Valenca, Departamento de Clinica e Cirurgia Veterinaria, Valenca, Rio de Janeiro. Brasil 4Universidade Federal Rural do Rio de Janeiro, Departamento de Anatomia Animal e Humana, Seropedica, Rio de Janeiro. Brasil |
| Año: | 2020 |
| Volumen: | 49 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | The present study aimed to correlate the age and weight of Girolando heifers with uterine and ovarian development. Sixty heifers between 12 and 36 months old were weighed and subjected to ultrasound assessment to measure the diameters of each uterine horn and ovaries, monthly. These measures continued until their first ovulation. The animals were divided, for data analysis, according to their age into five groups: GI (12 to 14 months), GII (15 to 18 months), GIII (19 to 24 months), GIV (25 to 30 months), and GV (31 to 36 months). The dispersion diagram was used to assess the correlation between data collected monthly from uterus/ovaries and weight/age. An average daily growth of 0.0032 mm was recorded for the right ovary (RO) and 0.0051 mm for the left ovary (LO). The average size of the RO in GI was 17.58 mm and the LO was 15.28 mm; in GII, the RO was 16.72 mm and the LO was 15.89 mm; in GIII, the RO was 18.37 mm and the LO was 16.55 mm; in GIV, the RO was 19.09 mm and the LO was 17.49 mm; and in GV, the RO was 19.89 mm and the LO was 18.96 mm. The uterine horns showed an average daily growth of 0.0064 mm and 0.0071 mm for the right (RU) and left (LU) uterine horn, respectively. The average sizes of the uterine horns per group were: RU, 11.46 mm and LU, 11.48 mm; RU, 12.41 mm and LU, 12.63 mm; RU, 13.16 mm and LU, 13.19 mm; RU 14.30 mm and LU, 14.58 mm; and RU, 16.12 mm and LU, 16.68 mm for the groups GI, GII, GIII, GIV, and GV, respectively. The heifers showed an average daily weight gain of 0.224 kg and the groups GI, GII, GIII, GIV, and GV had an average weight of 220.5, 239.3, 287.6, 332.9, and 380.1 kg, respectively. Therefore, weight growth correlates with the growth of the ovaries and uterine horns; furthermore, these data correlate positively as the animals age |
| Disciplinas: | Medicina veterinaria y zootecnia |
| Palabras clave: | Bovinos, Edad, Peso, Aparato reproductivo, Morfometría, Girolando |
| Keyword: | Bovines, Age, Weight, Girolando, Reproductive apparatus, Morphometry |
| Texte intégral: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
