Abstract
The aim was to study postpartum follicular population dynamics in Brahman cows in the Mexican humid tropics and under different stocking rates. Lactating adult cows (n = 104) grazed native grammas (Paspalum spp., Axonopus spp.) under two stocking rates: 2.8 (high) or 1.7 (low) cows/ha. Follicle numbers and their size (millimetres) were measured by ovarian ultrasound scanning. Animals detected in oestrus and inseminated were taken out of the study. Both stocking rates produced similar (P < 0.05) body condition scores (BCS) and follicular dynamics. The percent of follicles, averaged over stocking rates, of <4 mm diminished and those of 5–8 mm increased with time, whilst those of >9 mm remained constant; respective values for the previously mentioned sizes were 60 days postpartum (n = 101), 49%, 56% and 5%; 120 days (n = 70), 28%, 66% and 6%; and 180 days (n = 15), 9%, 79% and 12%. There was a positive correlation between BCS and follicle number for size <4 mm (r = 0.73, P < 0.01), whilst for size 5–8 mm, this was negative (r = −0.51, P < 0.05), for follicles >9 mm, no difference was found (r = −0.08, P > 0.05). It was concluded that stocking rate did not affect follicular population dynamics of Brahman cows, but BCS dictated the number and categories of follicles present regardless of the stocking rate utilised.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11250-009-9457-x/MediaObjects/11250_2009_9457_Fig1_HTML.gif)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11250-009-9457-x/MediaObjects/11250_2009_9457_Fig2_HTML.gif)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11250-009-9457-x/MediaObjects/11250_2009_9457_Fig3_HTML.gif)
Similar content being viewed by others
Abbreviations
- BCS:
-
Body condition score
- SR:
-
Stocking rate
References
Alonso-Díaz MA, Castillo-Gallegos E, Basurto-Camberos H, Jarillo-Rodríguez J, Valles-de la Mora B. Respuesta productiva de una pastura de gramas nativas bajo pastoreo rotacional intensivo en clima cálido húmedo (Productive response of a native pasture under intensive rotational grazing on a hot humid climate). Revista Avances Investigación Agropecuaria 2007;11:35–55. (In Spanish with abstract in English).
Arreguín AJA, Santos ER, Villa-Godoy A, Román YPH. Interacción de la condición corporal (C.C.) y la frecuencia del amamantamiento (M) sobre la actividad ovárica postparto en vacas Cebú. II.- Población folicular ovárica. Veterinaria México 1995;26:323.
Burns PD, Spitzer JC, Henricks DM, Burns GL. Effects of dietary energy restriction on follicular and corpora lutea development in non-lactating beef cows. Journal of Animal Science 1994;72(Suppl 1):76.
Castillo, G.E. Improving a native pasture with the legume Arachis pintoi in the humid tropics of México. Doctoral Thesis, Wageningen University, Wageningen, The Netherlands, 2003, pp 157
Ciccioli NH, Wettemann RP, Spicer LJ, Lents CA, White FJ, Keisler DH. Influence of body condition at calving and postpartum nutrition on endocrine function and reproductive performance of primiparous beef cows. Journal of Animal Science 2003;81:3107–3120.
Diskin MG, Mackey DR, Roche JF, Sreenan JM. Effects of nutrition and metabolic status on circulating hormones and ovarian follicle development in cattle. Animal Reproduction Science 2003;78:345–370.
Fernández TL, Castillo GE, Ocaña ZE, Valles MB, Jarillo RJ. Characteristics of the sward in native grass pastures either alone or associated with Arachis pintoi CIAT 17434, under intensive rotational grazing. Técnica Pecuaria México 2006;44:365–378. (In Spanish and English).
Henao G, Olivera-Ángel M, Maldonado-Estrada JG. Follicular dynamics during postpartum anestrus and the first estrous cycle in suckled or non-suckled Brahman (Bos indicus) cows. Animal Reproduction Science 2000;63:127–136.
Kanuya NL, Matiko MK, Nkya R, Bittegeko SBP, Mgsa MN, Reksen O, Ropstad E. Seasonal changes in nutritional status and reproductive performance of Zebu cows kept under a traditional agro-pastoral system in Tanzania. Tropical Animal Health and Production 2006;38:511–519.
Lents CA, White FJ, Ciccioli NH, Wettemann RP, Spicer LJ, Lalman DL. Effects of body condition score at parturition and postpartum protein supplementation on estrous behavior and size of the dominant follicle in beef cows. Journal of Animal Science 2008;86:2549–2556.
Maquivar M, Galina CS, Verduzco A, Galindo J, Molina R, Estrada S, Mendoza MG. Reproductive response in supplemented heifers in the humid tropics of Costa Rica. Animal Reproduction Science 2006;93:16–23.
Murphy MG, Boland MP, Roche JF. Pattern of follicular growth and resumption of ovarian activity in postpartum beef suckler cows. Journal of Reproduction and Fertility 1990;90:523–533.
Ocaña, Z.E., Valles, M.B., Fajersson, P., Landeros, C., Castillo, G.E., Jarillo R.J. 2005. Efecto de la carga animal sobre la producción de leche y características de pasturas nativas en Veracruz, México. Revista BioTam, Universidad Autónoma de Tamaulipas, Edición Especial Tomo II, pp 449–450.
Pierson RA, Ginther OJ. Ultrasonography of the bovine ovary. Theriogenology 1984;21:495–501.
Pullan NB. Condition scoring of white Fulani cattle. Tropical Animal Health and Production 1978;10:118–12.
Rhodes FM, Fitzpatrick LA, Entwistle KW, De’ath G. Sequential changes in ovarian follicular dynamics in Bos indicus heifers before and after nutritional anoestrus. Journal of Reproduction and Fertility 1995;104:41–49.
Ruiz-Cortés ZT, Olivera-Angel M. Ovarian follicular dynamics in suckled zebu (Bos indicus) cows monitored by real time ultrasonography. Animal Reproduction Science 1999;54:211–220.
Santos ER, Arreguín JAA, Villa-Godoy A, Román YPH. Interacción de la condición corporal (C.C.) y la frecuencia del amamantamiento (M) sobre la actividad ovárica postparto en vacas Cebú. I.- El desarrollo folicular ovárico. Reunión Nacional de Investigación Pecuaria. Veterinaria México 1995;26:322.
Soto CR, Rubio I, Galina CS, Castillo E, Rojas S. Effect of pre- and post-partum feed supplementation on productive performance of grazing primiparous Brahman cows. Tropical Animal Health and Production 2001;33:253–264.
Steel RGD, Torrie JH. Principles and Procedures of Statistics. A Biometrical Approach. 2nd ed. USA: McGraw-Hill, 1980.
Stewart RE, Spicer LJ, Hamilton TD, Keefer BE, Dawson LJ, Morgan GL, Echternkamp SE. Levels of insulin-like growth factor (IGF) binding proteins, luteinizing hormone and IGF-I receptors, and steroids in dominant follicles during the first follicular wave in cattle exhibiting regular estrous cycles. Endocrinology 1996;137:2842–2850.
Wettemann RP, Lents CA, Ciccioli NH, White FJ, Rubio I. Nutritional- and suckling-mediated anovulation in beef cows. Journal of Animal Science 2003;81:E48–59.
Acknowledgements
The authors kindly appreciate the correction of the English language of this manuscript made by Dr. Jane Russell.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Rubio, I., Castillo, E., Soto, R. et al. Postpartum follicular development in Brahman cows under two stocking rates. Trop Anim Health Prod 42, 539–545 (2010). https://doi.org/10.1007/s11250-009-9457-x
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11250-009-9457-x