Gestational stress in sheep and lambs at birth / Estresse gestacional em ovelhas e cordeiros no momento do parto
Luís Henrique, Fábio; Gonçalves Titto, Cristiane; Barbosa Hooper, Henrique; Luisa da Silva Longo, Ana; Fernanda Polido Rodriguez, Lina; Mayra da Cunha Leme, Thays; Cristina Veronezi, Jéssica; Antonio Lencioni Titto, Evaldo; Jose Zanella, Adroaldo; Manuel Franco Pereira, Alfredo.
B. Indústr. Anim.;
71: 7-7, 2014.
Artigo
em Inglês
| VETINDEX
| ID: vti-467612
Resumo
The stress in animals is linked with possible unusual changes that reduce the individual welfare. These changes generally related to the environment or to animal physiology cause imbalance in the biological reactions as a defense by releasing certain substances, including cortisol. There are few studies which indicate that there is heritable consequences promoted by cortisol generated by stress during pregnancy on the first hours of life of the lamb and the gestational phase (days of gestation) in which stress was promoted also interferes with it. Thus, the aim of this study was to evaluate during the delivery time the cortisol levels of lambs and sheep subjected to stress in different weeks of pregnancy and the effect on the birth weight of the lambs. The study was approved by Ethics Committee of FZEA/USP (13.1.2109.74.8). Forty crossbred Santa Ines ewes, multiparous, with an average age of 5 years and 60 kg of body weight (BW), grazing on Coast-cross were used (Cynodon dactylon (L.) Pers.) on rotated system, with free access to shade, water and mineral supplementation. All experimental ewes were artificially inseminated with semen from White Dorper breed. During gestation, the ewes were divided into three groups on a completely randomized design: CG - control group of 15 animals that were not subjected to stress; GI - intermediate group of 12 animals that suffered stress at 7O artigo não apresenta resumo em português.
Biblioteca responsável:
BR68.1
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