Skip to main content Accessibility help
×
Home

In dual-purpose subtropical goats, 1 h of extra-light given from 16 to 17 h after dawn (pulse of light) in winter stimulates milk yield

  • Edwin S Mendieta (a1), Manuel de J Flores (a2), José A Delgadillo (a1), José A Flores (a1), Marie Bedos (a3), Luís A Zarazaga (a4), Ricardo Avilés (a1), Angélica Terrazas (a5), Jesús Vielma (a1), Gerardo Duarte (a1) and Horacio Hernández (a1)...

Abstract

This research communication addresses the hypothesis that in dual-purpose goats, exposure to 1 h of extra-light given from 16 to 17 h after dawn (pulse of light) in winter stimulates milk yield. One group of goats was maintained under natural short photoperiod (natural day; ND (n = 7)). Another group of lactating females was submitted to an artificial long-day photoperiod consisting of 16 h light and 8 h darkness (long days; LD (n = 7)). A third group of females received one single hour of extra-light 16 h after the fixed dawn (pulse of light; PL (n = 6)). Goats from LD and PL yielded 30% more milk than goats from ND. Mean percentages of fat, protein and lactose contents in milk did not differ between the 3 groups at any stage of lactation, but these components in grams/day were higher in goats from PL than in the others two groups within the first 45 d of lactation. In conclusion, dual-purpose lactating goats that started their lactation during natural short days, the daily exposition to a 1-h pulse of light is sufficient to stimulate milk yield compared to females maintained under natural short photoperiod.

Copyright

Corresponding author

Author for correspondence: Horacio Hernandez, Email: hernandezhoracio@outlook.com

References

Hide All
Bocquier, F, Thériez, M, Kann, G and Delouis, C (1986) Influence de la photopériode sur la partition de l’énergie nette entre la production laitière et les réserves corporelles chez la brebis traite. Reproduction Nutrition Development 26, 389390.
Chemineau, P, Normant, E, Ravault, JP and Thimonier, J (1986) Induction and persistence of pituitary and ovarian activity in the out-of-season lactating dairy goat after a treatment combining a skeleton photoperiod, melatonin and the male effect. Journal of Reproduction and Fertility 78, 497504.
Flores, MJ, Flores, JA, Elizundia, JM, Mejia, A, Delgadillo, JA and Hernandez, H (2011) Artificial long-day photoperiod in the subtropics increases milk production in goats giving birth in late autumn. Journal of Animal Science 89, 856862.
Flores, MJ, Delgadillo, JA, Flores, JA, Pastor, FJ, Duarte, G, Vielma, J and Hernández, H (2015) Artificial long days increase milk production in subtropical lactating goats managed under extensive grazing conditions. Journal of Agricultural Science 153, 335342.
Garcia-Hernandez, R, Newton, G, Horner, S and Nuti, LC (2007) Effect of photoperiod on milk yield and quality and reproduction in dairy goats. Livestock Science 110, 214220.
Hart, IC (1975) Concentrations of prolactin in serial blood samples from goats before, during and after milking throughout lactation. Journal of Endocrinology 64, 3053012.
Lacasse, P, Ollier, S, Lollivier, V and Boutinaud, M (2016) New insights into the importance of prolactin in dairy ruminants. Journal of Dairy Science 99, 864874.
Ravault, JP and Ortavant, R (1977) Light control of prolactin secretion in sheep. Evidence for a photoinducible phase during a diurnal rhythm. Annales de Biologie Animal, Biochimie Biophysique 17, 459473.
Santucci, PM and Maestrini, O (1985) Body condition of dairy goats in extensive systems of production: method of estimation. Annales de Zootechnie 34, 473474.

Keywords

Type Description Title
PDF
Supplementary materials

Mendieta et al. supplementary material
Mendieta et al. supplementary material 1

 PDF (159 KB)
159 KB

In dual-purpose subtropical goats, 1 h of extra-light given from 16 to 17 h after dawn (pulse of light) in winter stimulates milk yield

  • Edwin S Mendieta (a1), Manuel de J Flores (a2), José A Delgadillo (a1), José A Flores (a1), Marie Bedos (a3), Luís A Zarazaga (a4), Ricardo Avilés (a1), Angélica Terrazas (a5), Jesús Vielma (a1), Gerardo Duarte (a1) and Horacio Hernández (a1)...

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed