Effect of pharmacologically induced changes in milk ejection on suckling in Bos taurus

Mayntz, M.; Costa, Rui M.

doi:10.1016/s0031-9384(98)00161-9

Cited by 10 publications

(4 citation statements)

References 9 publications

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“…Only milk in the cistern is available for harvest. An outflow from the cistern larger than the inflow into it makes waiting for refilling of a cistern profitable for offspring (MAYNTZ and COSTA, 1998). Waiting for refilling a single cistern is optimised when several cisterns are emptied in a sequence.…”

Section: General Aspectsmentioning

confidence: 99%

“…The sequence of events listed below was essential for the course of ontogeny in that proposal. Those events were: (i) a bout pattern reflecting the milk flow in the gland (MAYNTZ and COSTA, 1998) had developed (for details see ; (ii) regular and frequent teat changes occurred between the suckled teats, (iii) all teats were suckled during a suckling meal (referred to as "meal" in the following), and (iv) the teats were suckled equally. Data were collected to describe the ontogeny of suckling behaviour in cattle.…”

Section: Introductionmentioning

confidence: 99%

“…Viewing of the meal-graphs gave the impression, that the ending period of the dairy meals resembled the starting period of beef meals. Milk yield was higher in the dairy breed and milk yield generally should be higher in the starting period because the big number of short bouts during the long after-stimulation belongs to the ending period of a meal (MAYNTZ and COSTA, 1998). Thus the idea arose that milk yield could be a "common currency" between the two breeds.…”

Section: Introductionmentioning

confidence: 99%

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Ontogeny of suckling behaviour in cattle - a model for several mammalian species?

Mayntz¹,

Sender

2007

Arch. Anim. Breed.

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Abstract. Suckling behaviour of nine beef cow-calf-pairs (Hereford and Charolais) and five dairy cow-calf-pair's (Polish Holstein-Friesian) was video-recorded from day one pp to day 70 (beef) or 82 (dairy) post partum (pp) regularly. Cows were only suckled during that time and milk yield could not be recorded. Bout was defined as all activities of the calf from the first contact between the mouth of the calf at a specific teat and the last contact at this teat, i.e., as a small sub-unit of a meal. Number of suckled teats, uniformity of relative shares of suckled teats, number of bouts, average bout and relative number of bout-teat-repetitions described the course of ontogeny of suckling behaviour. The first model included the effects breed, cow (breed), and day pp as regression. The analysis revealed the following: (i) number of teats, uniformity of relative shares between suckled teats, and number of bouts increased with increasing day pp. (ii) Average bout, relative number of bout-teat repetitions and mealbout- relationship decreased with increasing day pp. (iii) The same developments could be observed in both breeds, however, significantly slower in the dairy breed. The second model included the effects breed, cow (breed) and average bout as regression, representing milk yield. Breed changed from a very powerful into an almost negligible effect in that second analysis. The implications of the results for a wider group of mammalian species are discussed.

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Section: General Aspectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ontogeny of suckling behaviour in cattle - a model for several mammalian species?

Mayntz¹,

Sender

2007

Arch. Anim. Breed.

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“…The effect is induced by the available amount of milk in the mammary cistern in cows (Mayntz and Costa, 1998) or rats (Yamamuro and Sensui, 1994). It has not been studied in dairy cows whether the mentioned factor intensity of suckling affects the oxytocin release.…”

Section: Suckling and Machine Milkingmentioning

confidence: 99%

Factors affecting milk ejection and removal during milking and suckling of dairy cows

Tančin¹,

Bruckmaier²

2001

Vet. Med.

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The release of oxytocin and milk ejection occurrence in response to teat stimulation are crucial for fast and complete milk removal during milking or suckling. The milk ejection reflex can be disturbed at central or peripheral level under different experimental and practical conditions. The central disturbance results in the lack or insufficient ejection of the alveolar milk into the cistern due to inhibited oxytocin release from pituitary into the blood circulation. The important role in the pathophysiological regulation of the inhibited release of oxytocin is played by an opioid system. Endogenous opioids have suppressive effects on oxytocin release under the normal conditions of milk removal. However under the conditions of disturbed milk ejection their role in dairy cows was not confirmed. Other possible mechanisms involved in the central inhibition of oxytocin release are discussed. In dairy cows as compared with rats the mechanisms involved in the regulation of oxytocin release at the central level remain unclear. The central inhibition of oxytocin release has often been observed in dairy practice during milking of primiparous cows after parturition, suckling by alien calf, calf removal before milking, milking of cows in the presence of own calf, relocation and milking in an unknown milking place. If sufficient released oxytocin cannot induce the transfer of milk from alveoli to cistern, peripheral mechanisms are involved. Peripheral mechanisms are related to the increased levels of catecholamines and/or activation sympathetic nervous system at the udder level. In conclusion, the release of oxytocin and milk ejection efficiency can be very easily suppressed by many factors. The effect of milking conditions on regulation of milk ejection has to be considered. Thus the physiological requirements of dairy cows have to be respected.

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Parental Behavior in Bovines

Lidfors

2022

Advances in Neurobiology

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Effect of pharmacologically induced changes in milk ejection on suckling in Bos taurus

Cited by 10 publications

References 9 publications

Ontogeny of suckling behaviour in cattle - a model for several mammalian species?

Ontogeny of suckling behaviour in cattle - a model for several mammalian species?

Factors affecting milk ejection and removal during milking and suckling of dairy cows

Parental Behavior in Bovines

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