Lactation stage and udder health status of Santa Ines ewes

Blagitz, Maiara Garcia; Benites, N. R.; Melville, Priscila Anne; Batista, Camila Freitas; Betiol, Patrícia Stocco; Azedo, Milton Ricardo; Gomes, Viviani; Souza, Fernando Nogueira de; Libera, Alice Maria Melville Paiva Della

doi:10.1590/s0102-09352012000200034

Cited by 8 publications

(6 citation statements)

References 9 publications

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“…On the other hand, when the effect of this variable against all other variables was investigated, no significant difference was detected, which suggested that this variable interacts with other variables. The non-significant difference in the lactation stage may be related to the high persistence of subclinical IMI during lactation due to the poor detection and elimination of infections during lactation and to their frequent staphylococcal origin (Bergonier et al 2003 ; Blagitz et al 2012 ).…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the majority of the information available on mammary gland health is concerned predominantly with dairy sheep from Mediterranean countries, and there are few data on nondairy breeds (Clements et al 2003; Blagitz et al 2012). Indeed, differences in climate, production forms, and management practices may give rise to differences in epidemiology, bacteriology, and manifestations of mastitis (Mork et al 2007).…”

Section: Introductionmentioning

confidence: 99%

“…In ewes that are not submitted to routine milking, physical inspection and palpation of the udders and teats may play an important role in the diagnosis of intramammary infections (IMI) or in the selection of animals to be submitted to MSCC and bacteriological examination. Furthermore, the majority of the information available on mammary gland health is concerned predominantly with dairy sheep from Mediterranean countries, and there are few data on nondairy breeds (Clements et al 2003 ; Blagitz et al 2012 ). Indeed, differences in climate, production forms, and management practices may give rise to differences in epidemiology, bacteriology, and manifestations of mastitis (Mork et al 2007 ).…”

Section: Introductionmentioning

confidence: 99%

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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: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Clinical findings related to intramammary infections in meat-producing ewes

Blagitz

Souza

Batista

et al. 2013

Trop Anim Health Prod

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“…On an international level, improving the health of livestock is of dramatically increasing interest to the dairy industry and consumers [17]. The SCC in milk is a reliable parameter to indirectly diagnose the health status of mammary glands [18][19][20][21][22] and is, therefore, an effective tool to control mammary disorders such as mastitis.…”

Section: Introductionmentioning

confidence: 99%

Genetic Parameters for Somatic Cell Count, Logscc and Somatic Cell Score of Breeds: Improved Valachian, Tsigai, Lacaune and their Crosses/Genetski Parametri Za Broj Somatskih Ćelija, Logscc I Skor Somatskih Ćelija Kod Rasa: Poboljšana Vlaška, Cigaja, Lakon I Njihovih Meleza

Makovický

Makovický²,

Nagy

et al. 2014

Acta Veterinaria

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In the last few years there has been increasing emphasis on reducing milk somatic cell count to improve the milk quality in dairy ruminants. Genetic parameters for somatic cell count (SCC), LOGSCC and somatic cell score (SCS) were estimated. About 1193 measurements were included in the analysis for each character of 358 ewes of 9 genotypes. Nine breeds and genotypes were included in these experiments: purebred Improved Valachian (IV), Tsigai (T), Lacaune (LC) ewes, and IV and T crosses with a genetic portion of Lacaune and East Friesian (EF) -25 %, 50 % and 75 %. Primary data were processed using restricted maximum likelihood (REML) methodology and the multi-trait animal model, using programs REMLF90 and VCE 4.0. Heritability coeffi cients for somatic cell count were low: h 2 =0.03, for LOGSCC h 2 = 0.08 and for somatic cell score h 2 =0.06. Somatic cell score can be considered for inclusion in a breeding program aimed at reducing somatic cell count and frequency of clinical mastitis in dairy sheep.

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“…Do mesmo modo, BRITO et al (2006) observaram aumento progressivo do teor de proteína e gordura com o avanço da lactação em ovelhas da raça Lacaune, sendo que o maior teor de lactose coincidiu com o pico da lactação (30 dias de lactação). Considerandose a celularidade do leite, observou-se aumento da CCS no final da lactação, corroborando os achados de GONZALO et al (1994) e BRITO et al (2006, o que sugere que o aumento da celularidade no final da lactação está relacionado com a maior resistência a infecções intramamárias neste período BLAGITZ et al, 2012;SOUZA et al, 2012). O aumento no teor de gordura e proteína e na CCS pode ser explicado, pelo menos em parte, pelo fator de diluição, demonstrado pelo padrão inverso entre o volume de leite produzido ao longo da lactação e o teor desses constituintes do leite, em contraste com a redução do teor de lactose que regula a produção de leite (FERREIRA et al, 2011).…”

Section: Discussionunclassified