The Effect of Physiological and Environmental Factors on the Prolactin Profile in Seasonally Breeding Animals

Molik, Edyta; Misztal, Tomasz; Zieba, D

doi:10.5772/51465

Cited by 2 publications

(1 citation statement)

References 51 publications

(57 reference statements)

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“…Furthermore, ewes that lamb and are milked in the period of long daylight duration tend to exhibit increased prolactin secretion during the milking months, which is a photoperiod sensitive hormone regulating the onset and continuation of the lactation process 39 . On the contrary, sheep starting their lactation during a period of shortening days have been shown to yield less milk compared to ewes milked during the long daylight period 40 . Accordingly, spring lambing sheep may benefit from long daylight throughout their lactation period and continue expressing their milk production potential despite high air temperatures.…”

Section: Discussionmentioning

confidence: 98%

Understanding the seasonality of performance resilience to climate volatility in Mediterranean dairy sheep

Tsartsianidou

Kapsona

Sánchez-Molano

et al. 2021

Sci Rep

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As future climate challenges become increasingly evident, enhancing performance resilience of farm animals may contribute to mitigation against adverse weather and seasonal variation, and underpin livestock farming sustainability. In the present study, we develop novel seasonal resilience phenotypes reflecting milk production changes to fluctuating weather. We evaluate the impact of calendar season (autumn, winter and spring) on animal performance resilience by analysing 420,534 milk records of 36,908 milking ewes of the Chios breed together with relevant meteorological data from eastern Mediterranean. We reveal substantial seasonal effects on resilience and significant heritable trait variation (h2 = 0.03–0.17). Resilience to cold weather (10 °C) of animals that start producing milk in spring was under different genetic control compared to autumn and winter as exemplified by negative genetic correlations (− 0.09 to − 0.27). Animal resilience to hot weather (25 °C) was partially under the same genetic control with genetic correlations between seasons ranging from 0.43 to 0.86. We report both favourable and antagonistic associations between animal resilience and lifetime milk production, depending on calendar season and the desirable direction of genetic selection. Concluding, we emphasise on seasonal adaptation of animals to climate and the need to incorporate the novel seasonal traits in future selective breeding programmes.

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Section: Discussionmentioning

confidence: 98%

Understanding the seasonality of performance resilience to climate volatility in Mediterranean dairy sheep

Tsartsianidou

Kapsona

Sánchez-Molano

et al. 2021

Sci Rep

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The Role of Melatonin and Bromocriptine in the Regulation of Prolactin Secretion in Animals – A Review

Molik

Błasiak

2015

Annals of Animal Science

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Many animals show a cyclic pattern of physiological processes depending on seasonal changes. These particularly concern the mating period, migration, aestivation and hibernation, which occur during seasons of the year characteristic of a given species. These phenomena require the animals to predict environmental changes and to metabolically prepare for them in advance. Such endogenous rhythms and cycles *Work financed from statutory activity (KBZ-2015).

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The Effect of Physiological and Environmental Factors on the Prolactin Profile in Seasonally Breeding Animals

Cited by 2 publications

References 51 publications

Understanding the seasonality of performance resilience to climate volatility in Mediterranean dairy sheep

Understanding the seasonality of performance resilience to climate volatility in Mediterranean dairy sheep

The Role of Melatonin and Bromocriptine in the Regulation of Prolactin Secretion in Animals – A Review

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