Genetic and Environmental Influences on Awassi Lamb Weights with Implications for Breeding and Management in Jordan DOI Open Access
Khaled Al-Najjar,

Abdulmounem O. Al Yasin,

Mustafa M. Alshdaifat

и другие.

Qeios, Год журнала: 2025, Номер 7(4)

Опубликована: Апрель 14, 2025

Awassi sheep demonstrate a robust capacity to thrive in arid climates, underscoring the feasibility of farming challenging environments. However, productivity constraints necessitate application selective breeding techniques and improved management practices. This study, conducted at Al-Fjaj Station Jordan, analyzed 2,263 weight records from reared under semi-intensive system assess environmental genetic determinants lamb estimate heritability values. Analysis variance indicated that factors such as birth type, sex, parity, ewe age lambing significantly influenced weight. Notably, single-born lambs were heavier birth, males consistently exhibited greater weights than females, younger ewes initially lighter but demonstrated compensatory growth over time. Although strong positive correlations observed among weaning, six-month, yearling weights, had relatively minor influence on subsequent development. The findings further revealed individual rams exerted significant effect with estimates indicating moderate contribution. These results suggest selection based single trait may confer benefits across other traits decline values supports index selection. In conclusion, strategic superior values, conjunction rigorous monitoring measures, is critical for advancing progress ensuring sustainable production regions.

Язык: Английский

Genetic and Environmental Influences on Awassi Lamb Weights with Implications for Breeding and Management in Jordan DOI Open Access
Khaled Al-Najjar,

Abdulmounem O. Al Yasin,

Mustafa M. Alshdaifat

и другие.

Qeios, Год журнала: 2025, Номер 7(4)

Опубликована: Апрель 14, 2025

Awassi sheep demonstrate a robust capacity to thrive in arid climates, underscoring the feasibility of farming challenging environments. However, productivity constraints necessitate application selective breeding techniques and improved management practices. This study, conducted at Al-Fjaj Station Jordan, analyzed 2,263 weight records from reared under semi-intensive system assess environmental genetic determinants lamb estimate heritability values. Analysis variance indicated that factors such as birth type, sex, parity, ewe age lambing significantly influenced weight. Notably, single-born lambs were heavier birth, males consistently exhibited greater weights than females, younger ewes initially lighter but demonstrated compensatory growth over time. Although strong positive correlations observed among weaning, six-month, yearling weights, had relatively minor influence on subsequent development. The findings further revealed individual rams exerted significant effect with estimates indicating moderate contribution. These results suggest selection based single trait may confer benefits across other traits decline values supports index selection. In conclusion, strategic superior values, conjunction rigorous monitoring measures, is critical for advancing progress ensuring sustainable production regions.

Язык: Английский

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