Influence of Stages of Lactation, Parity and Season on Somatic Cell Counts in Cows

Singh, Mahendra; Ludri, R. S.

doi:10.5713/ajas.2001.1775

Cited by 13 publications

(13 citation statements)

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“…Based on this observation, it is evident that the varied distribution of organisms in different stages of lactation did not influence the prevalence of SCM and in turn affected the milk yield. Singh & Ludri (2001) opined that the milk yield varied significantly (p<0.01) during different stages of lactation and was also negatively correlated with SCC, whereas in our study there was low correlation between milk yield and SCC (r = 0.038). Such weak correlation observed in the present work may be due to varied number of cows in different lactation stages.…”

Section: Resultscontrasting

confidence: 49%

Multiplex-PCR to detect pathogens and analysis of relation of age and stage of lactation of cows to sub-clinical mastitis

Rm¹,

Isloor²,

Rathnamma³

et al. 2016

JEBAS

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In this study, 225 milk samples were collected sequentially during 1 st to 88 th day from 25 HF cross cows in an organized farm. First five collections were obtained at a weekly interval (1,7,14,21 and 28 days) and later, fortnightly for two months (43, 58, 73 and 88 days). These milk samples were screened for Subclinical mastitis (SCM) by Somatic Cell Count (SCC). Further, multiplex-PCR for detection of S.aureus, E.coli, S.agalactiae, S.dysgalactiae and S.uberis was employed to detect the major bacterial pathogens. The SCM positivity was assessed based on criteria of SCC ≥ 500,000 cells /ml. The study revealed the high prevalence of variable SCM pattern in milking cows by SCC (73.33 %) in sequentially collected milk samples over a period of 88 days. No specific pattern of prevalence of SCM was observed during the study period. The prevalence of SCM was not influenced by the stage of lactation. In all the stages of lactation and age groups S. aureus, Streptococci and E.coli were detected with the predominance of S. aureus. The varied distribution of organisms in different stages of lactation did not influence the prevalence of SCM. Further, the high prevalence of SCM was noticed in aged cows. Among these, maximum number of milk samples (46 %, 52/113) revealing the presence of pathogens were obtained from cows in the age group 7-11 years. The multiplex PCR was found an easy and rapid method to detect the predominant pathogens causing SCM. The findings emphasize the need to control SCM through sequential monitoring of SCM through SCC, multiplex-PCR and proper managemental practices.

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Section: Resultscontrasting

confidence: 49%

Multiplex-PCR to detect pathogens and analysis of relation of age and stage of lactation of cows to sub-clinical mastitis

Rm¹,

Isloor²,

Rathnamma³

et al. 2016

JEBAS

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“…Ikonen et al (2004) and others have demonstrated that SCC was high a t the beginning of the lactation period, then reduced steadily and dropped t o minimal level a t second month and increased thereafter, thus, reaching maximum level at the end of the lactation. In contrast, Singh and Ludri (2001) and Uzmay et al (2003) emphasized that lactation stage did not affect SCC.…”

Section: Introductionmentioning

confidence: 90%

“…Researchers, who investigated the effects of seasonal changes on SCC, reported that the maximum threshold levels were observed from samples collected during summer period (Singh and Ludri, 2001;Green et al, 2006). It was concluded that, this effect was due to stress on cow caused by high temperature during summer season (Green et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, Laevens et al (1997) and Singh and Ludri, (2001) reported that SCC was not affected by panty. Ikonen et al (2004) and others have demonstrated that SCC was high a t the beginning of the lactation period, then reduced steadily and dropped t o minimal level a t second month and increased thereafter, thus, reaching maximum level at the end of the lactation.…”

Section: Introductionmentioning

confidence: 99%

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Some Environmental Factors Affecting Somatic Cell Count of Holstein Cows

Erdem

Atasever

Kul

2007

Journal of Applied Animal Research

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“…The non-significant changes in blood glucose and NEFA level indicated balanced feeding of buffaloes and non-mobilization of body reserves (Singh and Ludri, 1999). The increased SCC of milk in treated buffaloes was due to low milk yield and various factors affecting SCC (Shailja and Singh, 2002;Singh and Ludri, 2001). …”

Section: Discussionmentioning

confidence: 99%

Effect of Bromocryptine on hormones and milk secretion in Murrah buffaloes (Bubalus bubalis)

Prasad

Singh

2010

Animal

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An experiment was carried out on 10 advance pregnant Murrah buffaloes to determine the role of hormones in milk secretion around parturition. Experimental animals were administered with a single injection of bromocryptine, @ 100 mg/kg BW, for 5 days before expected calving, whereas control group buffaloes were injected with placebo injections. Blood samples collected before parturition (25,24,23,22,21 days), on day of parturition (day-0) and on day 1, 2, 3, 4, 5, 10 and 15 post partum were analyzed for growth hormone (GH), insulin like growth factor-I (IGF-I) and prolactin (PRL) by radioimmunassay methods. Milk samples were collected daily for 5 days and on day 10 and 15 after parturition. Milk fat, protein, lactose, citric acid, non-esterified fatty acids (NEFAs) and somatic cell counts (SCCs) were determined in milk samples. Bromocryptine treatment significantly ( P , 0.01) decreased pre partum PRL and increased GH levels ( P , 0.01) on day of parturition in experimental buffaloes without influencing plasma IGF-I level. Milk yield was significantly lower ( P , 0.01) in experimental than in control group. Further, effect of bromocryptine on milk yield was only for a week. Milk yield increased ( P , 0.01) gradually and was similar to control group on day 15 post partum. Bromocryptine treatment significantly increased milk SCC ( P , 0.01) and protein content ( P , 0.01) but there was no effect of treatment on fat, lactose, citric acid, glucose, milk and plasma NEFA concentration. It was concluded that prepartum suppression of PRL by bromocryptine impairs milk secretion temporarily in ensuing lactation. The significant rise in GH level before parturition and on day of parturition suggests a role of it in milk secretion of buffaloes.

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Influence of Stages of Lactation, Parity and Season on Somatic Cell Counts in Cows

Cited by 13 publications

References 0 publications

Multiplex-PCR to detect pathogens and analysis of relation of age and stage of lactation of cows to sub-clinical mastitis

Multiplex-PCR to detect pathogens and analysis of relation of age and stage of lactation of cows to sub-clinical mastitis

Some Environmental Factors Affecting Somatic Cell Count of Holstein Cows

Effect of Bromocryptine on hormones and milk secretion in Murrah buffaloes (Bubalus bubalis)

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