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Population structure of giraffes is affected by management in the Great Rift Valley, Kenya

Giraffe populations in East Africa have declined in the past thirty years yet there has been limited research on this species. This study had four objectives: i) to provide a baseline population assessment for the two largest populations of Rothschild’s giraffes in Kenya, ii) to assess whether there are differences in population structure between the two enclosed populations, iii) to assess the potential and possible implications of different management practices on enclosed giraffe populations to inform future decision-making, and iv)

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The role of nursery group guardian is not shared equally by female giraffe (Giraffa camelopardalis tippelskirchi)

Giraffe usually give birth to a single calf throughout the year, although some locations report that conceptions are more likely during the wet season (Shorrocks, 2016). Several mother‐calf pairs will gather to form a nursery group in which all calves and their mothers are all together (Foster & Dagg, 1972; Langman, 1977). In general, lactating females spend more time foraging or drinking than nonlactating females (Fischhoff et al., 2007; Hamel & Côté, 2008). Hence, sometimes females in a nursery group

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Reproductive failure in female Thornicroft’s giraffe (Giraffa camelopardalis thornicrofti) in Zambia

Reproductive suppression is common among mammals residing in cooperative social systems and is characterized by the cessation of ovulation in subordinate females until their social environment releases them from a temporary freeze on ovulating (e.g., dwarf mongoose, Helogale parvula (Creel, Creel, Wildt, & Monfort, 1992); African wild dogs, Lycaon pictus (Creel, Creel, Mills, & Monfort, 1997); wolves, Canus lupus (Packard, Seal, Mech, & Plotka, 1985); Damaraland mole rats, Cryptomys damarensis (Bennett, 1994); common marmosets, Callthrix jacchus (Barrett, Abbott, & George,

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Assessing Animal Welfare in Animal-Visitor Interactions in Zoos and Other Facilities. A Pilot Study Involving Giraffes

In recent years, awareness of the controversial aspects connected with wild animal-visitor interactions (AVIs) in zoos and other facilities has increased due to cultural changes. Therefore, the need to apply transparent procedures to evaluate AVIs programs in zoos and similar facilities has also increased. This study presents results of animal welfare’s assessment of a pilot test of a protocol based on six steps that aim to explore and assess the overall value of AVIs considering the impact both on animals

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Chemical immobilisation of giraffe to facilitate short procedures

Objective: To describe the chemical immobilisation of giraffe (Giraffa camelopardalis) for short procedures at Taronga Zoo. Design: A clinical report. Animals: Five giraffe. Procedure: The weight of each animal was determined and pre-immobilisation fasting, careful preparation of the site, and planning were carried out prior to each procedure. Etorphine and acetylpromazine were used as the sole immobilising agents. During immobilisation, elevation of the head and constant monitoring of the heart rate, respiratory rate and temperature were employed; blood pressure and

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Giraffe weight estimation using dissected leg weight and body measurements

Data from 44 adult giraffes (Giraffa camelopardalis) showed that leg weight as a percentage of body weight is sufficiently constant to provide regression equations useful for estimating body or carcass weight. Data from 53 giraffes of various ages show that reliable estimates of body weight can be made from linear body measurements, regardless of sex or age. The best for field use are linear regressions between body weight and chest girth; however, shoulder height is usually the only measurement obtained

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Diameter of coronary arteries in 36 species of mammalian from mouse to giraffe

Systematic quantitative investigations were performed in the coronary arteries of 102 hearts of 36 mammal species with an overall more than tenthousandfold difference of their heart weight. After postmortem coronary angiography with a filling pressure of 100 mm Hg x-rays were taken, and the widest diameters of the coronary artery stems were determined. We found a nearly linear correlation between diameter of a standardized coronary artery and virtual diameter of heart, but the increase in diameter of coronary arteries exceeded

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Quantifying giraffe poaching as population threat

While it is difficult to quantify the real effects of poaching on giraffe populations, what is clear is that the bushmeat trade is thriving globally and it is highly likely that giraffe are affected by this trade. Rowcliffe et al. (2010) estimate that 273 tonnes of bushmeat is imported into Europe alone from Africa each year (Kinver, 2010) and many other reports highlight the current thriving levels of trade in wildlife meat and skins (Born Free, 2004; Yee, 2007; Bobek,

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Infrasound and low frequency vocalizations from the giraffe

The giraffe, a savanna ungulate, possessing limited auditory vocalizations, was found to produce infrasound. Recordings were made of 11 Giraffe (Giraffe camelonardalis reticulata), at the North Carolina Zoological Park in Asheboro, North Carolina and the Riverbanks Zoo and Botanical Garden in Columbia, South Carolina. A portable system (7Hz – 22 kHz) was used to record the vocalizations. Analysis was conducted in real-time in the field using a portable trigger oscilloscope and National Instruments Polynesia. Real-time analysis consisted of Hamming FFT’s

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