Characterization of body biometrics during growth of elite Santa Ines sheep

Neto, Milton Rezende Teixeira; Cruz, Jurandir Ferreira da; Malhado, Carlos Henrıque Mendes; Carneiro, Paulo Luız Souza; Nunes, Rita de Cássia Santos; Souza, Luiz Miranda; Souza, Luiz Eduardo Barreto de

doi:10.1590/s1516-35982012000100009

Cited by 6 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results demonstrate the viability of farming meat sheep using those cultivars. Studies involving Santa Inês rams and ewes also reported that these animals reached 70% of adult weight at 360 to 450 days of age [31]. The current results agree with the statement that Santa Inês is for meat production.…”

Section: Resultssupporting

confidence: 89%

Biometric measurements of Santa Inês meat sheep reared on Brachiaria brizantha pastures in Northeast Brazil

et al. 2019

View full text Add to dashboard Cite

This study was undertaken to examine biometric measurements during the growth phase of male and female Santa Inês sheep reared in Brachiaria brizantha pastures in northeastern Brazil. The experiment involved 24 castrated males and 24 females at an initial age of 90 days, with an average body weight of 19.04 ± 0.96 kg. Treatments consisted of the effect of four cultivars (Marandu, Xaraés, Piatã and Paiaguás) and two sexes. Six animals were used per treatment, in a randomized-block experimental design. The following characteristics were evaluated: abdominal circumference (AC), body condition score (BCS), body length (BL), body weight (BW), body capacity 1 (BC 1 ), body capacity 2 (BC 2 ), chest width (CW), heart girth (HG), leg circumference (LC), leg length (LL), rump height (RH), rump width (RW) and withers height (WH). Data were subjected to descriptive analysis, Pearson’s correlation, ANOVA and Tukey’s, Kruskal Wallis and Mann-Whitney tests. Univariate and multiple regressions were applied to estimate BW with a maximum error level of 5%. Significant differences were observed for the biometric measurements between sexes and cultivars (p<0.05). Body weight was highly correlated (>70%) with AC, WH, CG, RW, BC 1 and BC 2 . The male sheep grazed on cultivars Piatã showed the best values for BW (40.43 kg), HG, RW, WH, LL, LC (102.46; 20.8; 65.23; 60.44; 42.54 cm respectively) and BC 1 (4.25 kg/cm). Females grazed on cultivar Marandu had higher values for RW, CW, LL (17.26; 20.1; 75.98 cm respectively), BC 1 (6.03 kg/cm) and BC 2 (0.422 kg/cm). The equations that best estimated live weight were BC 1 and HG. In male and female Santa Inês sheep, biometric parameters grow differently depending on the cultivar where they are grazed during the growth phase. Cultivars Marandu and Piatã are the most recommended for sheep production, as they provided the best performance and body development in those animals.

show abstract

Section: Resultssupporting

confidence: 89%

Biometric measurements of Santa Inês meat sheep reared on Brachiaria brizantha pastures in Northeast Brazil

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Thus, differences may occur among animals under different nutritional managements or ages. Studies using traditional morphometry in domestic animal species have found variations among populations of different herds or locations, considering the body measurements of these animals (Yakubo et al, 2010;Ogah et al, 2011;Texeira-Neto et al, 2012;). However, it is difficult to say whether the variation found is due to differences between individuals or environmental effects.…”

Section: Discussionmentioning

confidence: 99%

Breed characterization of native chickens based on their head shape and size

Almeida,

Carneiro,

Nunes

et al. 2023

Rev. DELOS

View full text Add to dashboard Cite

Native chickens have unique characteristics related to adaptation to the most diverse breeding systems. The phenotypic characterization of different chicken ecotypes is necessary in view of the current situation of loss of local genetic resources. Development of methodologies capable of supporting morphometric studies is very useful in native domestic breeds conservation. Thus, geometric morphometrics is a recently proposed approach for the quantification of shape and size variation separately, which has shown advantages over the traditional method. The objective of this study was to characterize female chickens of the Peloco, Barbuda, and Caneluda breeds based on their head shape and size by using geometric morphometric. Images of the head of 85 chickens were captured, and 13 landmark and semi-landmark were set in the beak, nostril and eye regions. The three chicken breeds evaluated showed significant differences (p < 0.01) regarding the head shape. Most variations occurred in the eyes and beak; the Peloco breed presented wide and curved beak, and round eyes. According to the grouping analysis, the Peloco and Caneluda breeds had similar head shape and were allocated to the same group; and the Barbuda breed was allocated separated from the others by differing from them. The breeds presented significant differences (p < 0.01) in size, and the Caneluda breed had the largest head size. The geometric morphometrics allowed the distinction of the breeds by identifying shape variations, especially in the beak and eye regions. Thus, it is promising for studies on phenotypic diversity and breed characterization of these birds.

show abstract

Performance of the Santa Ines breed raised on pasture in semiarid tropical regions and factors that explain trait variation

Jucá

Faveri

Filho

et al. 2014

Trop Anim Health Prod

View full text Add to dashboard Cite

This study aimed to evaluate sex, the number of lambs per birth, and the family effects on production traits in the Santa Ines breed of sheep by estimating the least square means and coefficient of variance for those traits. A total of 484 lambs were evaluated for the following traits: weight at birth, at weaning, and at 240 days of age; weight gain during the pre-weaning and post-weaning periods; height, width, and length of different body regions; and rib eye area and fat thickness between the 12th and 13th ribs. We observed coefficients of variation higher than 10 % for several traits. Generally, males were larger than females (P < 0.05), while lambs from single and double births were larger than lambs from triple births (P < 0.05). Family effect was significant (P < 0.05) for most traits and explained the highest percentage of residual variance. The results showed good development of Santa Ines sheep, especially during the pre-weaning period but no in post-weaning. Our study also showed that there is an effect of sex, birth type, and family, which must be included in any statistical model for the estimation of least square means and residual variance in ANOVA.

show abstract

Characterization of body biometrics during growth of elite Santa Ines sheep

Cited by 6 publications

References 13 publications

Biometric measurements of Santa Inês meat sheep reared on Brachiaria brizantha pastures in Northeast Brazil

Biometric measurements of Santa Inês meat sheep reared on Brachiaria brizantha pastures in Northeast Brazil

Breed characterization of native chickens based on their head shape and size

Performance of the Santa Ines breed raised on pasture in semiarid tropical regions and factors that explain trait variation

Contact Info

Product

Resources

About