Valuing quality attributes of <scp>A</scp>ustralian merino wool

Nolan, Elizabeth; Farrell, Terence C.; Ryan, Madeleine; Gibbon, Candice; Ahmadi‐Esfahani, Fredoun Z.

doi:10.1111/1467-8489.12027

Cited by 13 publications

(8 citation statements)

References 21 publications

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“…Similar results from several scholars were observed by several scholars, such as Erasmus and Delport (1987), Pepper et al (2000), Gibbon and Nolan (2011), Nolan et al (2013), Nolan (2014) and Scobie et al (2015), who found that fibre diameter has the greatest influence on the Merino wool price. The sizes of wool fibres are described by the diameter of wool fibres (Das et al, 2015).…”

Section: Rjtasupporting

confidence: 87%

An analysis of the wool characteristics that determine wool price in South Africa

Zenda,

Malan,

Geyer

2023

RJTA

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Purpose South Africa’s wool industry plays an important role in the agricultural sector. The wool industry provides a valuable source of income for farmers who practice sustainable farming practices. However, wool farmers face numerous challenges, such as wool contamination, dirty wool and producing good-quality wool. Good-quality wool is determined by fibre diameter, clean yield, vegetable matter and staple length. This study aims to address these challenges. Design/methodology/approach A multiple regression analysis of price (R/kg) of White wool and Merino wool was applied to four variables fibre diameter: vegetable matter, clean yield and staple length. The analysis was based on the data for the 2009–2019 data from Cape Wools auctions. Findings Fibre diameter, clean yield and staple length, with exception of vegetable matter, made a statistically significant contribution to the determination of wool price after all other independent variables were controlled for (p < 0.05). A one-unit (micron) increase in fibre diameter resulted in a 0.404-unit decrease in wool price (R/kg). A one-unit (mm) increase in staple length resulted in a 0.022-unit increase in wool price (R/kg). There was no statistically significant association between vegetable matter and wool price. A one-unit increase in clean yield was associated with a 0.111-unit increase in wool price (R/kg). Research limitations/implications Since wool fleeces consist of the largest portion of wool shorn from sheep, it is important for wool farmers to focus on wool with low fibre diameter, high clean yield percentage, low percentage of vegetable matter content and good length of the wool. Practical implications Since wool fleeces consist of the largest portion of wool shorn from sheep, it is important for wool farmers to focus on wool with low fibre diameter, high clean yield percentage, low percentage of vegetable matter content and good length of the wool. Social implications In a developing country such as South Africa, this study is important for the following reason. It is understanding the wool characteristics that have the most significance influence on the determination of wool price for Merino wool and White wool might effectively help the wool farmers to adapt their production systems to improve the wool characteristics that determine wool price. Originality/value This study identified a need for a study to be conducted on all wool classes.

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Section: Rjtasupporting

confidence: 87%

An analysis of the wool characteristics that determine wool price in South Africa

Zenda,

Malan,

Geyer

2023

RJTA

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“…The fiber diameter is an important raw wool characteristic because it is a significant determinant of greasy wool price, and there is a premium paid for finer wool types ( Nolan et al, 2014 ). The effects of DDGS inclusion were not detected on fiber diameter but quadratically increased ( P = 0.04) SD fiber diameter, with the highest SD in the 25DDGS experimental group ( Table 4 ).…”

Section: Resultsmentioning

confidence: 99%

Replacing cottonseed meal and sorghum with dried distillers’ grains with solubles enhances the growth performance, carcass traits, and meat quality of feedlot lambs

Quadros¹,

Whitney²,

Kerth

2022

Translational Animal Science

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We evaluated the impacts of substituting cottonseed meal (CSM) and sorghum grain (SG) with dried distillers` grains with solubles (DDGS) in lamb feedlot diets on the dry matter intake (DMI), the growth performance, blood serum analysis, feces phosphorus (P) and nitrogen (N), wool production and quality, carcass traits, adipose tissue fatty acid profiles, and sensory panel tests. For 72 d, Rambouillet wether lambs (n = 44, initial body weight, BW = 28.8 ± 3.3 kg) were individually fed ad libitum pelleted diets containing DDGS that replaced 0% (0DDGS), 25% (25DDGS), 50% (50DDGS), or 75% (75DDGS) of the CSM and SG in a completely randomized design trial. Linear and quadratic effects of DDGS levels on the response variables were analyzed. Treatment × day interactions (P < 0.001) were observed for BW and DMI. As the DDGS level was increased, DMI (from d 21 to d 70), lamb BW (from d 56 to d 70), average daily gain, blood urea nitrogen and P, and fecal P linearly increased (P ≤ 0.05). Fecal N quadratically increased (P = 0.01), but no effects were found for gain:feed, blood insulin-like growth factor-1, or calcium. No differences in wool production or most of the wool quality parameters were detected. Adipose tissue stearic acid linearly increased (P = 0.02), linoleic acid quadratically increased (P = 0.01), and oleic acid tended to quadratically decrease (P = 0.08) as the DDGS increased in the diets. Increasing the DDGS level in the diets quadratically increased the hot carcass weight (P = 0.02), backfat thickness (P = 0.04), and body wall thickness (P < 0.001) while having no impact on the longissimus muscle area. As the DDGS increased in the diet, juiciness, tenderness, and overall acceptability linearly increased (P ≤ 0.05), while having no effect on the cook-loss, flavor intensity, or off-flavor detectability. Replacing 50% of CSM and SG with DDGS improved growth performance and enhanced the carcass and meat quality.

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“…() and Todd and Cowell () in the cattle industry and Nolan et al . () in the wool industry. There are two related lines of the hedonic pricing approach.…”

Section: Hedonic Pricing Theorymentioning

confidence: 99%

Hedonic pricing and the role of stud fees in the market for thoroughbred yearlings in Australia

Kim

Mitchell

Wang

2019

Aus J Agri & Res Econ

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Using data from one of Australia's largest thoroughbred auction houses, we investigate the price determinants of thoroughbred yearlings sold at auction. We include novel key variables to construct hedonic pricing models and examine the relative role of stud fees compared to the wide range of attributes in the pricing of yearlings. We find that the price effect of stud fees is influenced by the value buyers place on both the characteristics of sires and the characteristics of sire side siblings. The findings imply that the quality of dams a sire has been matched within the breeding market has consequential effects on yearling prices through the sire's stud fee and progeny.

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Valuing quality attributes of Australian merino wool

Cited by 13 publications

References 21 publications

An analysis of the wool characteristics that determine wool price in South Africa

An analysis of the wool characteristics that determine wool price in South Africa

Replacing cottonseed meal and sorghum with dried distillers’ grains with solubles enhances the growth performance, carcass traits, and meat quality of feedlot lambs

Hedonic pricing and the role of stud fees in the market for thoroughbred yearlings in Australia

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