The effects of conditioning to suckling, milking and of calf presence on the release of oxytocin in dairy cows

Tančin, V.; Kraetzl, Wolf-Dieter; Schams, D.; Bruckmaier, Rupert M.

doi:10.1016/s0168-1591(01)00113-7

Cited by 38 publications

(41 citation statements)

References 27 publications

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“…In contrast, other authors have reported that dairy cows show higher OT release during suckling than milking in the calf's presence [18,42]. However, the difference between these results and our study could be attributed to the fact that the latter authors compared two different groups submitted to suckling or milk-377 higher in a combined system of suckling and milking than in exclusive milking [5].…”

Section: Discussioncontrasting

confidence: 99%

Effect of calf suckling on oxytocin, prolactin, growth hormone and milk yield in crossbred Gir $\times$ Holstein cows during milking

Negrão

Marnet

2002

Reprod. Nutr. Dev.

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International audienceThis study evaluated the effect of different milking managements on oxytocin, prolactin and growth hormone release in Gir $\times$ Holstein cows. Six cows were suckled by their calves, before and after milking (SM group); another six cows were submitted to exclusive milking (M group). High OT levels were observed during suckling of the SM group, however both groups had similar levels of OT during milking. The SM group presented PRL levels significantly higher than the M group, however only during suckling. For GH levels, the SM group showed higher levels than the M group, however this difference was significant only during the first suckling, cleaning of the teats and at the beginning of machine milking. Despite these results, SM cows produced more milk (milking plus suckling) than M cows, however milk obtained by milking was similar for both groups

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Section: Discussioncontrasting

confidence: 99%

Effect of calf suckling on oxytocin, prolactin, growth hormone and milk yield in crossbred Gir $\times$ Holstein cows during milking

Negrão

Marnet

2002

Reprod. Nutr. Dev.

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“…As a result, some farmers allow crossbred cows to be suckled by their calves, because these cows produce more milk than those submitted to exclusive machine milkings [9][10][11]. Obviously, this mixed management increases the labour of milkers and thus many farmers wean calves at birth and submit both Gir and Gir × Holstein cows to exclusive machine milking, except for a short colostral period during suckling, as is done with dairy Bos taurus cows [7,12,13]. Indeed, the immediate separation of the cow and calf overlooks the fact that weaning inhibits OT and PRL release [8], and is accompanied by a significant decrease in milk production [7,8].…”

Section: Introductionmentioning

confidence: 99%

Milk yield, residual milk, oxytocin and cortisol release during machine milking in Gir, Gir × Holstein and Holstein cows

Negrão¹,

Marnet²

2006

Reprod. Nutr. Dev.

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-This study evaluated the effect of exclusive machine milking on oxytocin (OT) and cortisol (CORT) release, and on milk yield and residual milk in Gir (group Gir), Holstein (group Hol) and crossbred animals (group GirHol). Six animals from each group were submitted to experimental milkings. As expected, milk yield was significantly higher in the Hol group than in the groups GirHol and Gir, and group GirHol produced more milk than the Gir group. In contrast, all groups exhibited significant but similar levels of OT, although OT increased more rapidly during milking for the groups Hol and GirHol than for the Gir group. In addition, CORT levels measured during and after milking were significantly influenced by the group. The Gir group showed higher levels of CORT than the groups GirHol and Hol. The lower performances of the Gir breed can not be explained by a less efficient milk ejection reflex because all cows studied released enough OT and had an effective milk ejection.zebu / crossbred / milking / oxytocin / cortisol

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“…Later entering of animals into the milking parlour can often be related to health problems or stress (if e.g. conditions of milking were changed) (Tancin et al 2001;Polikarpus et al 2015). If animals are stressed, cardiac rhythm increases (Hopster et al 1998) and the release of oxytocin necessary for milking can be insufficient (Macuhova et al 2002).…”

mentioning

confidence: 99%

Effect of ewes entry order into milking parlour on milkability and milk composition

Mačuhová¹,

Tančin²,

Mačuhová³

et al. 2017

CZECH J ANIM SCI

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Mačuhová L., Tančin V., Mačuhová J., Uhrinčať M., Hasoňová L., Margetínová J. (2017): Effect of ewes entry order into milking parlour on milkability and milk composition. Czech J. Anim. Sci., 62, 392-402.The aim of the present investigation was to evaluate how the order in which the ewes in a milking group enter the milking parlour affects their milkability and milk composition. Therefore, the order of entry into the milking parlour was evaluated in ewes of one flock (n = 353) during six evening milkings. In all, the sheep were milked in 15 milking groups. The sheep entering the milking parlour in the first milking group achieved 15 points and the sheep of each next milking group one point less, i.e. the sheep of the last group achieved 1 point. In the analysis, only the ewes with the highest and the lowest average number of points were included and assigned to the first (FG, n = 19) and the last group (LG, n = 29), respectively. After the last milking, the individual milk samples were collected from the jar to analyze the composition and somatic cell count. Machine milk yield in 30 s (0.15 ± 0.09 and 0.11 ± 0.05 l) and 60 s (0.26 ± 0.16 and 0.19 ± 0.10 l), peak flow rate (1.04 ± 0.39 and 0.77 ± 0.29 l/min), and latency time (14 ± 3 and 20 ± 13 s) significantly differed (P < 0.05) between FG and LG, respectively. Total milk yield (0.41 ± 0.17 and 0.35 ± 0.14 l) and machine milk yield (0.27 ± 0.15 and 0.22 ± 0.10 l) tended to be higher (P = 0.05 and P = 0.09) in FG than in LG, respectively. No significant differences were observed in milk composition between FG and LG. It seems that ewes which enter the milking parlour in early milking groups have better parameters of milkability than those milked in later groups.

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The effects of conditioning to suckling, milking and of calf presence on the release of oxytocin in dairy cows

Cited by 38 publications

References 27 publications

Effect of calf suckling on oxytocin, prolactin, growth hormone and milk yield in crossbred Gir $\times$ Holstein cows during milking

Effect of calf suckling on oxytocin, prolactin, growth hormone and milk yield in crossbred Gir $\times$ Holstein cows during milking

Milk yield, residual milk, oxytocin and cortisol release during machine milking in Gir, Gir × Holstein and Holstein cows

Effect of ewes entry order into milking parlour on milkability and milk composition

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