Document
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Continuant
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Resumption of ovarian activity is modified by non-photoperiodic environmental cues in Criollo goats in tropical latitudes
type: Generically Dependent Continuant
abstract: The reproductive activity of female goats under tropical latitude is modulated by photoperiod; however other non-photoperiodic cues may play a role in this modulation. We assessed the relationships among circulating concentrations of progesterone and environmental cues (photoperiod, atmospheric pressure, precipitation, absolute humidity, maximum environmental and soil temperatures, and wind speed). For two consecutive years, environmental data were collected every 10 min, while 8 female goats, separated from bucks, were individually fed a maintenance diet and were kept under natural conditions of photoperiod and climate (22°N). Female goats were weighed and body mass index (BMI) determined every week and were bled bi-weekly to monitor circulating patterns of progesterone. Environmental data was not similar in both years (P < 0.001). Live weight rose from 37.4 ± 1.3 kg (mean ± SEM) to 53.7 ± 2.2 kg, and BMI from 8.3 ± 0.3 to 12.2 ± 0.4 over the course of the experiment. The mean date when resumption of ovarian activity occurred differed between years (17 October vs. 27 September; P < 0.001) and it was negatively associated with live weight and BMI (P < 0.01). We observed that resumption of ovarian activity occurred when the ambient temperature averaged below 26° C. The concentration of progesterone was positively associated with live weight and BMI (P < 0.05), absolute humidity and atmospheric pressure (P < 0.001); but it was negatively associated with photoperiod, precipitation, and also maximum environmental and soil temperatures (P < 0.001). The concentration of progesterone was not associated with wind speed (P > 0.05). In conclusion, criollo goats from the semi-arid region of central-northern Mexico exhibited a clearly defined reproductive seasonality. This reproductive seasonality is not only modulated by photoperiod but also by non-photoperiodic environmental cues which may play an important role on this modulation. Temperature above 28 °C affects productivity…
freetext keyword: Environmental temperature; Photoperiod; Progesterone; Seasonal anoestrus
type: Entity
type: Document
most specific type: Article
date time value: article date 4782
type: Thing
type: Continuant
page end: 16
related by: authorship_28075
page start: 9
type: Information Content Entity
doi: 10.1016/j.smallrumres.2016.02.016
related by: authorship_28074
estado: published
crisid: 4782
related by: authorship_28072
most specific type: Document
volume: 137
e iscopus: 2-s2.0-84975770105
type: Article
related by: authorship_28073
origen: scopus
has publication venue: Small Ruminant Research

Generically Dependent Continuant
type: Class

RDF description of Resumption of ovarian activity is modified by non-photoperiodic environmental cues in Criollo goats in tropical latitudes - http://orbis.uaslp.mx/vivo/individual/scopus4781
rights: termsOfUse
date: 2026-08-27T13:01:32
publisher: vivo
type: Document

Article
type: Class

Information Content Entity
type: Class

Small Ruminant Research
type: Collection
type: Continuant
type: Generically Dependent Continuant
type: Thing
type: Journal
type: Entity
type: Document
publication venue for: Resumption of ovarian activity is modified by non-photoperiodic environmental cues in Criollo goats in tropical latitudes
type: Information Content Entity
type: Periodical