Comprehensive evaluation of dairy ewe welfare in Algerian intensive farms using the BIENE protocol.

This study is the first to apply the behaviour, immunity, nutrition and environment (BIENE) protocol to assess dairy ewe welfare in intensive farms in Algeria. A total of 1,964 ewes from 50 farms in the Algiers region were evaluated between December 2022 and March 2023 using 13 animal-based indicators related to nutrition, housing, health, and behavior. Moderate tooth loss affected 54.67 ± 3.32% of ewes, and 20.38 ± 2.78% had a low body condition score (< 2). Housing problems included fleece moisture (11.28 ± 2.55%) and over 40.00% soiling of flanks and hindquarters. Health issues, such as mild anemia (23.55%), lameness (26.45%), nasal discharge (35.47 ± 4.43%), and labored breathing (8.79 ± 1.47%), were observed. In terms of behavior, most ewes appeared attentive and active, although 40.55% showed fear and 19.90% aggression. Flight time increased from 2.50 ± 0.07 sec to 3.80 ± 0.07 sec, and animals maintained greater distance from the corridor (2.79 ± 0.08 m) than from the observer (1.85 ± 0.06 m). Principal component analysis of qualitative behavior assessment identified three clusters, including well-being, discomfort, and vitality. Spearman correlation analysis showed that relaxed ewes had better body condition score (r = 0.29) and were less likely to be lame (r = - 0.32) or anemic (r = - 0.37). Vigorous ewes showed fewer signs of respiratory distress (r = - 0.32), while apathetic ones were more prone to poor conditioning (r = 0.31) and injuries (r = 0.30).The BIENE protocol proved effective in detecting major welfare issues in intensive Algerian sheep farming.