Body development, ingestive behaviour, and physiological responses of Nelore and Crossbred heifers.

IF 1.7 3区农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Tropical animal health and production Pub Date : 2025-06-10 DOI:10.1007/s11250-025-04515-3

C S Santos, A R D L Souza, A L J Ferraz, F A M Sterza, R V Rohod, M F Castro, L S Amorim, M C E Queiroz, G B Almeida, M V M Oliveira, A R D Santos, D M Oliveira

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引用次数: 0

Abstract

This study evaluated the body development, ingestive behaviour, and physiological responses of Nelore and Crossbred (Nelore × Angus/Senepol) heifers. A total of 20 heifers, approximately 12 months old, were distributed in a randomized block design and categorized into two genotypes: Nelore - 11 heifers; Crossbred (F1 Nelore × Angus/Senepol) - 9 heifers. Nelore heifers exhibited greater withers height, hip height, rump length, and substernal height, whereas Crossbred heifers had higher chest depth and average daily gain values (P < 0.05). In addition, Nelore heifers spent more time feeding and standing idle, while Crossbred heifers spent more time drinking water (P < 0.05). Nelore heifers showed (P < 0.001) higher sweating rate. The superior productive performance of the crossbred heifers, along with the similarity in respiratory and heart rates between the genotypes, highlights that the crossbreeding of Nelore and Angus/Senepol cattle is an effective strategy to boost cattle production in tropical climate regions.

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内洛尔和杂交小母牛的身体发育、摄食行为和生理反应。

本研究评价了Nelore和杂交（Nelore × Angus/Senepol）小母牛的身体发育、摄食行为和生理反应。共有20头约12个月大的小母牛，采用随机区组设计，分为两种基因型：Nelore - 11头；杂交（F1 Nelore × Angus/Senepol） - 9头小母牛。杂种母牛的肩高、臀高、臀长和胸骨下高均高于杂种母牛，而杂种母牛的胸深和平均日增重均高于杂种母牛

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来源期刊

Tropical animal health and production 农林科学-兽医学

CiteScore

3.40

自引率

11.80%

发文量

361

审稿时长

6-12 weeks

期刊介绍： Tropical Animal Health and Production is an international journal publishing the results of original research in any field of animal health, welfare, and production with the aim of improving health and productivity of livestock, and better utilisation of animal resources, including wildlife in tropical, subtropical and similar agro-ecological environments.