slugPhysiological responses of crossbred boer goats finished in native pasture in the semiarid
Journal Title: Journal of Animal Behaviour and Biometeorology - Year 2013, Vol 1, Issue 2
Abstract
In this study, it was evaluated physiological responses of crossbred Boer goats finished in native pasture. The experiment was carried out at experimental farm of Federal University of Campina Grande (UFCG), Patos, Paraiba, Brazil. Were used Twenty-four goats with 120 days of age. The animals were randomly assigned to according to a completely randomized design, being evaluated two shifts (morning and afternoon) with six replications (goats). It were recorded environmental parameters ambient temperature (AT), relative humidity (RH) and wind velocity and determined humidity and black globe temperature index (HGTI) in the shade and in the sun and radiant thermal load(RTL) in the shade and in the sun. The physiologic parameters were evaluated according to the methodology described by Santos et al. (2006) with measurements of rectal temperature (RT), respiratory rate (RR) and skin temperature (ST). There was significant effect of shift of the environmental parameters with (HGTI) in the sun of 93.10 and radiant thermal load (RTL) in the sun of 819.07 W.m-2. The period of the day affected the physiological responses RT, RR and ST with averages values of 39.38 °C, 56.85 mov/min and 34.30 °C, respectively. There was significant effect in relation to the time of day on the physiologic parameters of goats Boer crossbreeds. The thermal gradient between rectal temperatures and superficial and between the superficial temperature and environmental is an indicator of heat stress for goats studied.
Authors and Affiliations
Bonifácio Benício de Souza ▪ Anderson Luiz Nascimento da Silva ▪ José Morais Pereira Filho ▪ Nayanne Lopes Batista ▪ Dermeval Araújo Furtado
Keywords
Related Articles
- EP ID EP17862
- DOI http://dx.doi.org/10.14269/2318-1265.v01n02a02
- Views 613
- Downloads 29
slugThermal environment in growing and finishing pig facilities of different building typologies
The objective of this study was to evaluate the thermal comfort of growing and finishing pigs affected by the different constructive typologies of the installations regarding the floor and lateral partitions. Were eva...
slugBehavior activities of Macrobrachium rosenbergii (De Man, 1879) in monosex and mixed populations, in the laboratory
Monosex all-male populations for the commercial breeding of the freshwater prawn Macrobrachium rosenbergii have been used to lessen the specimens´ aggressiveness and size heterogeneousness. The species´s behavioral va...
slugManual of good practices for welfare: a proposal for dairy cattle on pasture in Brazil
Debate on ethics in animal production started in 1960s. Since that time, discussion on animal welfare (AW) has taken large proportions, where laws and specific rules were created in some countries. Also, this issue ha...
slugInfluência das cores ambientais sobre o desempenho zootécnico e comportamento alimentar durante a masculiniza ção da Tilápia do Nilo
The rise of tilapia in Brazil and the world increasingly needs the best growing conditions. Despite the Nile tilapia has diurnal, your vision is considered a strong sensory stimulus, and as the perception of the color...
slugGenetic differences in the physiological responses of sheep in tropical environment
Were used 18 ewes of three different breed group, distributed in a completely randomized design in a factorial diagram (3 x 3, 3 breed group: Santa Inês (SI); ½ Santa Inês + ½ Dorper (Do x SI), and ½ Santa Inês + ½ Te...