slugEvaluation of the adaptability of dairy goats in the Brazilian semi-arid region with the aid of infrared thermography
Journal Title: Journal of Animal Behaviour and Biometeorology - Year 2014, Vol 2, Issue 3
Abstract
The objective of this study was to evaluate the adaptability of dairy goats with aid of infrared thermography in the environmental conditions of the Brazilian semiarid region. Were used 36 female goats, with a mean of 2.5 years and an average weight of 45 kg, distributed in a completely randomized design 2 x 2 in a factorial arrangement; two genotypes (Anglo Nubian and Alpine Brown) and two shifts (morning and afternoon), with 18 repetitions. Analysis of variance showed that the shift had significant effect (P<0.05) on rectal temperature (RT), average surface temperature (AST) and thermal gradients, but the breed had no significant effect (P>0.05) and there was no significant interaction between breed and shift. With respect to physiological parameters: respiratory rate (RR) and surface temperature of the muzzle of cinnamon there was significant effect of breed and shift and significant interaction between breed and shift (P<0.05). Positive correlations between physiological parameters and room temperature and negative correlation between thermal gradients and more parameters. The Anglo Nubian breed had become more adapted to the semi-arid environmental conditions representing a good alternative for breeding programs. The Alpine breed increased respiratory effort required to dissipate heat and maintain homeothermy, proving to be more demanding regarding system creation and management in the semi-arid climatic conditions.
Authors and Affiliations
Elisângela Maria Nunes da Silva ▪ Bonifácio Benicio de Souza ▪ Gustavo de Assis Silva ▪ Maria Dalva Bezerra de Alcântara ▪ Maria das Graças Gomes Cunha ▪ Bênio Alexandre de Assis Marques
Keywords
Related Articles
- EP ID EP17878
- DOI http://dx.doi.org/10.14269/2318-1265/jabb.v2n3p95-101
- Views 470
- Downloads 35
slugSexually inexperienced anestrous goats are able to exhibit sexual behaviours exposed to sexually active bucks
The aim of this study was to determine whether sexually inexperienced females could display proceptivity and receptivity behaviours as the experienced, in the first exposure to males. Three groups of females (n=9 each...
slugFeed sorting of beef cattle in a feedlot fed different forages and housed in individual or collective pens
Feed sorting is a natural behavior of cattle that can result in inconsistencies in the nutritive value of the diet. Twenty-four non-castrated F1 Red Norte × Nelore males with an average initial body weight of 439.8 ±...
slugThermo-acoustic environment of a pig farm facility with different superimposed bed materials
The objective of this work was to compare different bedding materials in swine production systems by evaluating noise and thermal environment indexes. The experiment was performed during June and July, in the finishin...
slugGenetic and phenotypic trends of fertility traits for Holstein dairy population in warm and temperate climate
The main objective of this study was to investigate genetic and phenotypic trends for fertility traits in Holstein dairy population under warm and temperate climate. Fertility traits were: success in first service, ge...
slugThermoregulatory traits of crossbred cattle Holstein x Gir cattle in southern of Piauí state
In this work we aimed to evaluate the thermoregulatory traits of crossbred cattle Holstein x Gir under climatic influence during the morning and afternoon shifts of the raining season of the year, in southern of Piaui...