Escola de Veterinária e Zootecnia, Universidade Federal de Goiás (UFG), Rodovia Goiânia - Nova Veneza, Goiânia, Brazil.
Department of Veterinary Medicine, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás (UFG), Rodovia Goiânia - Nova Veneza, Goiânia, Brazil.
Anat Histol Embryol. 2021 Mar;50(2):333-344. doi: 10.1111/ahe.12634. Epub 2020 Nov 17.
A longitudinal study was conducted to identify the morphological development of eyes and head of Jersey cattle at different ages. A total of 48 healthy Jersey cattle, 1 to 58 months of age, were included in the study. Ophthalmologic examinations were performed to identify healthy cattle to form the age groups: GI (1- to 11-month-old), GII (16- to 24-month-old) and GIII (25- to 58-month-old). The animals were physically restrained and examined by transcorneal ultrasound of both eyes; the axial length (AxL), corneal thickness (CO), lenticular thickness (L), depth of the anterior (AC) and vitreous (VC) chambers were evaluated. The cranial measurements obtained included the total, cranial, and nasal lengths and widths. Subsequently, the cephalic index (CI) was calculated. The AxL (GI: 2.83 cm; GII: 3.16 cm; GIII: 3.24 cm), AC (GI: 0.44 cm; GII: 0.53 cm; GIII: 0.53 cm), L (GI: 0.88 cm; GII: 1.01 cm; GIII: 1.04 cm) and VC (GI: 1.44 cm; GII: 1.55 cm; GIII: 1.59 cm) increased (p ≤ .001) according to age, but the CO (GI: 0.07 cm; GII: 0.08 cm; GIII: 0.08 cm) (p > .05) did not. The total length (GI: 30.83 cm; GII: 43.29 cm; GIII: 44.15 cm), cranial length (GI: 18.11 cm; GII: 23.82 cm; GIII: 22.69 cm), nasal length (GI: 12.72 cm; GII: 19.47 cm; GIII: 21.46 cm) and nasal width (GI: 26.22 cm; GII: 33.82 cm; GIII: 34.00 cm) increased (p < .001), and the CI (GI: 85.66 cm; GII: 78.15 cm; GIII: 77.02 cm) decreased (p < .001). The AxL correlated positively (p < .001) with the cranial length and width and negatively with the CI (p > .05). The ocular biometry of Jersey cattle correlates with their cranial measurements at different ages. With increasing age, the eyes and the head grow, establishing growth curves similar to those of other mammals.
一项纵向研究旨在确定不同年龄的泽西牛眼睛和头部的形态发育。共有 48 头健康的泽西牛，年龄在 1 至 58 个月之间，被纳入研究。进行眼科检查以确定健康牛，形成年龄组：GI（1 至 11 个月）、GII（16 至 24 个月）和 GIII（25 至 58 个月）。动物被物理约束并通过双眼穿透角膜超声进行检查；评估轴长（AxL）、角膜厚度（CO）、晶状体厚度（L）、前房（AC）和玻璃体（VC）腔的深度。获得的头颅测量值包括总长度、头颅长度和鼻骨长度和宽度。随后，计算颅面指数（CI）。AxL（GI：2.83cm；GII：3.16cm；GIII：3.24cm）、AC（GI：0.44cm；GII：0.53cm；GIII：0.53cm）、L（GI：0.88cm；GII：1.01cm；GIII：1.04cm）和 VC（GI：1.44cm；GII：1.55cm；GIII：1.59cm）随着年龄的增长而增加（p≤.001），但 CO（GI：0.07cm；GII：0.08cm；GIII：0.08cm）（p>.05）并没有。总长度（GI：30.83cm；GII：43.29cm；GIII：44.15cm）、颅长（GI：18.11cm；GII：23.82cm；GIII：22.69cm）、鼻骨长度（GI：12.72cm；GII：19.47cm；GIII：21.46cm）和鼻骨宽度（GI：26.22cm；GII：33.82cm；GIII：34.00cm）增加（p<.001），CI（GI：85.66cm；GII：78.15cm；GIII：77.02cm）降低（p<.001）。AxL 与颅长和宽度呈正相关（p<.001），与 CI 呈负相关（p>.05）。泽西牛的眼部生物测量与不同年龄的头颅测量相关。随着年龄的增长，眼睛和头部生长，建立与其他哺乳动物相似的生长曲线。
