剪毛对小尾寒羊行为和生理的影响

doi:10.11843/j.issn.0366-6964.2018.09.008

Abstract

Abstract:

To study the effects of shearing on the behavioral and physiological patterns of Small-tail Han sheep, 9 rams and 13 ewes which had similar body condition and needed the first shearing were selected to study the behavioral patterns (before, during and after shearing) and the physical indexes (before and after shearing) from September 1^st to 10^th, 2015. The behavior ethogram were lying, ruminating, standing, walking, foraging, drinking before and after shearing, and rising, blinking, bleating, ear shaking, tail wagging, excreting during shearing. The physical indexes measured were heart rate(HR), respiratory frequency(RF) and rectal temperature(RT). Animal were drawed and K⁺,Na⁺,Mg²⁺ and the blood metabolites of β-endorphin (β-EP), adrenocorticotrophic hormone (ACTH), prolactin (PRL), catecholamine(CA), triiodothyronine (T3), Triiodothyronine (T4), antidiuretic hormone (ADH), cortisol (CORT), growth hormone (GH), glucose (GLU) were measured before,during and after shearing. The results showed that shearing produced acute intensive stress to Small-tail Han sheep. Shearing increased the behavior of blinking, tail wagging, rising in ewes and rams,and the plasma ACTH and GH of ewes first increased and then decreased with the process of shearing and showed significant changes (P<0.05), the other blood ions and metabolites showed no significant changes (P>0.05). There were some differences in these parameters between male and female sheep:The more blinking and bleating occurred in ewes than that in rams during shearing(P=0.006,0.022).The significant differences in ACTH,CA,T4 between rams and ewes at the ending of shearing (P=0.050,0.004,0.029) were detected, and the contents of plasma ACTH and T3 in rams were higher than that in ewes 10 minutes after the ending of shearing (P=0.037,0.031). In comparison, the stress tolerance of rams was stronger than that of ewes. The shearing also significantly changed the behavioral patterns and physical indexes of the Small-tail Han sheep. The increasing of foraging, drinking, ruminating, walking and the decreasing of standing, rectal temperature and respiratory frequency after shearing all accounted for the improvement of the adaptability of Small-tail Han sheep in high temperature environment.

CLC Number:

S826.1

LI Fu-kuan, YANG Yan, WANG Hui, Lü Shen-jin, WEI Wan-hong. Effect of Shearing on the Behavioral and Physiological Patterns of Small-tail Han Sheep[J]. ACTA VETERINARIA ET ZOOTECHNICA SINICA, 2018, 49(9): 1870-1878.

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Effect of Shearing on the Behavioral and Physiological Patterns of Small-tail Han Sheep

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