Influence of age and weight of Girolando heifers on uterine and ovarian development
ABSTRACT 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 measure...
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Sociedade Brasileira de Zootecnia
2020-09-01
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| Series: | Revista Brasileira de Zootecnia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100702&tlng=en |
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| author | Hellen de Sousa Fernandez Daniela Cristina Rocha de Freitas Gustavo Fernandes Grillo Lara Nogueira Silenciato Sérgio Trabali Camargo Filho Joaquim Esquerdo Ferreira Helcimar Barbosa Palhano Marco Roberto Bourg de Mello |
| author_facet | Hellen de Sousa Fernandez Daniela Cristina Rocha de Freitas Gustavo Fernandes Grillo Lara Nogueira Silenciato Sérgio Trabali Camargo Filho Joaquim Esquerdo Ferreira Helcimar Barbosa Palhano Marco Roberto Bourg de Mello |
| author_sort | Hellen de Sousa Fernandez |
| collection | DOAJ |
| description | ABSTRACT 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. |
| first_indexed | 2024-12-17T23:14:05Z |
| format | Article |
| id | doaj.art-939fa51ddfa3435c8ed5e2d7f2752cfc |
| institution | Directory Open Access Journal |
| issn | 1806-9290 |
| language | English |
| last_indexed | 2024-12-17T23:14:05Z |
| publishDate | 2020-09-01 |
| publisher | Sociedade Brasileira de Zootecnia |
| record_format | Article |
| series | Revista Brasileira de Zootecnia |
| spelling | doaj.art-939fa51ddfa3435c8ed5e2d7f2752cfc2022-12-21T21:29:03ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1806-92902020-09-014910.37496/rbz4920200028Influence of age and weight of Girolando heifers on uterine and ovarian developmentHellen de Sousa Fernandezhttps://orcid.org/0000-0002-6547-4827Daniela Cristina Rocha de Freitashttps://orcid.org/0000-0001-8641-1991Gustavo Fernandes Grillohttps://orcid.org/0000-0002-9007-2782Lara Nogueira Silenciatohttps://orcid.org/0000-0003-4534-9137Sérgio Trabali Camargo Filhohttps://orcid.org/0000-0003-1575-0923Joaquim Esquerdo Ferreirahttps://orcid.org/0000-0002-4336-4651Helcimar Barbosa Palhanohttps://orcid.org/0000-0001-6109-2250Marco Roberto Bourg de Mellohttps://orcid.org/0000-0002-9790-4764ABSTRACT 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100702&tlng=enmorphometrypubertyweight growth |
| spellingShingle | Hellen de Sousa Fernandez Daniela Cristina Rocha de Freitas Gustavo Fernandes Grillo Lara Nogueira Silenciato Sérgio Trabali Camargo Filho Joaquim Esquerdo Ferreira Helcimar Barbosa Palhano Marco Roberto Bourg de Mello Influence of age and weight of Girolando heifers on uterine and ovarian development Revista Brasileira de Zootecnia morphometry puberty weight growth |
| title | Influence of age and weight of Girolando heifers on uterine and ovarian development |
| title_full | Influence of age and weight of Girolando heifers on uterine and ovarian development |
| title_fullStr | Influence of age and weight of Girolando heifers on uterine and ovarian development |
| title_full_unstemmed | Influence of age and weight of Girolando heifers on uterine and ovarian development |
| title_short | Influence of age and weight of Girolando heifers on uterine and ovarian development |
| title_sort | influence of age and weight of girolando heifers on uterine and ovarian development |
| topic | morphometry puberty weight growth |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100702&tlng=en |
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