Produção e composição do leite de ovelhas Santa Inês e mestiças Lacaune e Santa Inês e desenvolvimento de seus cordeiros

Ferreira, Maria Izabel Carneiro; Borges, I.; Macedo, Gilberto de Lima; Rodríguez, N. M.; Penna, C.F.A.M.; Souza, Márcio Rodrigues de; Gomes, Márcio Gianordoli Teixeira; Souza, Fernando Andrade; Cavalcanti, Luigi Francis Lima

doi:10.1590/s0102-09352011000200040

Cited by 15 publications

(14 citation statements)

References 4 publications

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“…Here, we used Santa Ines ewes, a Brazilian breed mainly raised for meat production (Amarante et al 2004; Ferreira et al 2011), with a considerable milk production (Ferreira et al 2011). In tropical conditions, these animals have a better ability to withstand environmental stressors than European breeds, which may be linked to greater resistance to some infections, as previously described (Amarante et al 2004; Brincarello et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Clinical findings related to intramammary infections in meat-producing ewes

Blagitz

Souza

Batista

et al. 2013

Trop Anim Health Prod

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The aim of this study was to investigate the relationship between clinical findings and bacterial isolation in milk samples of meat-producing ewes. The study was conducted in 17 commercial flocks and 550 udder halves from suckling Santa Ines ewes. Initially, the clinical examination of the mammary glands and teats was performed by visual inspection and palpation of the teats and udder halves; then a scoring system was devised for all the findings. After that, the strip cup test and the California mastitis test (CMT) were performed. Then, milk samples for somatic cell counts (SCCs) and bacteriological analyses were collected. Staphylococci bacteria were the main etiological agent isolated in the present study. Upon investigation of the correlations between bacterial isolation and the clinical findings, only the presence of teat injury, pendulous udder, and alterations in the palpation of the teat were associated with bacterial isolation. A significant correlation between bacteriologically positive milk samples and CMT and SCC was also found. Thus, some clinical findings appeared as a risk factor for bacteriologically positive milk samples and can be used as a tool in mastitis control programs. However, a complete and extensive diagnosis, an appropriate therapy, and an efficient mastitis control program will require the combination of clinical examination, microbiological tests, and SCC.

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Section: Introductionmentioning

confidence: 99%

Clinical findings related to intramammary infections in meat-producing ewes

Blagitz

Souza

Batista

et al. 2013

Trop Anim Health Prod

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“…The Santa Inês milk production reported by other authors (Susin et al, 2005;Ribeiro et al, 2007;Araújo et al, 2008;Ferreira et al, 2011) was generally less than 1.06 to 1.47 kg/day. However, the current experiment performed total lamb separation, whereas in other studies, the ewes and lambs were separated daily (Ribeiro et al, 2007) or once a week (Susin et al, 2005;Araújo et al, 2008;Ferreira et al, 2011), which may have stimulated greater milk production by ewes.…”

Section: Discussionmentioning

confidence: 69%

“…However, the current experiment performed total lamb separation, whereas in other studies, the ewes and lambs were separated daily (Ribeiro et al, 2007) or once a week (Susin et al, 2005;Araújo et al, 2008;Ferreira et al, 2011), which may have stimulated greater milk production by ewes. The different doses of oxytocin used (Araújo et al, 2008) may have also contributed to the differences observed between studies.…”

Section: Discussionmentioning

confidence: 85%

Performance and serum cortisol concentration in Santa Inês lambs under different suckling schemes

Alves

Ascari

et al. 2016

R. Bras. Zootec.

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-The objective of this study was to examine the effects of suckling schemes (continued, controlled, and total separation) and the type of pregnancy on performance and serum cortisol concentration in lambs. A total of 29 Santa Inês ewes and 40 lambs were used, and the randomized block design was applied in a split-plot scheme with a 3 × 2 factorial arrangement in the plot and time in the subplot. For controlled suckling, the diet was supplied twice daily during one hour, starting on their 10th day of life. Total and average daily intakes of concentrate dry matter of lambs that underwent total separation was higher than those of lambs under continued suckling. Lambs subjected to total separation demonstrated higher concentrate dry matter intake/weight gain ratio, lower total weight gain, lower average daily weight gain, and lower weaning weight than those subjected to continued and controlled suckling. Lambs from single pregnancy demonstrated higher weight gain and obtained higher weight at weaning. Lambs subjected to total separation have a developmental delay. However, the lower performance of lambs subject to total separation cannot be attributed to stress because there is a decrease in the serum cortisol concentration over time.

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“…Thus, in the present study, the larger daily weight gain in the pre-weaning period may be due to higher amount of protein and energy supply by maternal milk, compared protein and energy coming from the pastures. Ferreira et al (2011) found 6.6 % of fat and 5.1 % of protein in Santa Ines milk and average production of 1,005.6 mL/day. The higher weight in males can be explained by the influence of hormones, because according to Jacobs et al (1972), the testosterone increases feed efficiency and promotes muscle and skeletal growth.…”

Section: Body Weight and Weight Gainmentioning

confidence: 93%

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

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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.

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Produção e composição do leite de ovelhas Santa Inês e mestiças Lacaune e Santa Inês e desenvolvimento de seus cordeiros

Cited by 15 publications

References 4 publications

Clinical findings related to intramammary infections in meat-producing ewes

Clinical findings related to intramammary infections in meat-producing ewes

Performance and serum cortisol concentration in Santa Inês lambs under different suckling schemes

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

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