商品乳牛生产中牛×牛、乳×牛杂交对奶牛生产力、胴体性状和收入的品种和杂种优势效应评价

IF 0.8 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Acta Agriculturae Scandinavica Section A-Animal Science Pub Date : 2020-04-01 DOI:10.1080/09064702.2020.1746825

M. S. Wetlesen, B. A. Åby, O. Vangen, L. Aass

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引用次数: 3

摘要

摘要本研究旨在研究阿伯丁安格斯(A)、赫里福德(H)、夏洛莱(C)、利穆赞(L)、西蒙塔尔(S)、挪威红(N)及其杂交品种的产犊困难、出生、断奶和胴体重、牛群寿命、屠宰年龄、平均日胴体增重、胴体形态、胴体脂肪和每头胴体收入(kg / d)，以评价杂交策略。采用SAS进行多元回归，估计直系和母系品种加性和杂种优势效应及预测表型均值。与纯种牛肉相比，施氮杂交断奶重更高，产犊困难更小。由于母系氮素对胴体重和收入有良好的加性作用，与英国品种杂交的生产性能优于纯种。(A × C) × C在产犊困难和胴体重方面具有良好的母体杂种优势，因此具有较高的生产性能。综上所述，利用有利的杂种优势效应在商业化生产中是有潜力的，但这取决于生产系统。

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Estimation of breed and heterosis effects for cow productivity, carcass traits and income in beef × beef and dairy × beef crosses in commercial suckler cow production

ABSTRACT This study aims to investigate calving difficulties, birth-, weaning- and carcass weight, herd life of cow, age at slaughter, average daily carcass gain, carcass conformation, carcass fatness and carcass income per carcass, kg or day, in Aberdeen Angus (A), Hereford (H), Charolais (C), Limousin (L), Simmental (S), Norwegian red (N) and their crosses, in order to evaluate crossbreeding strategies. Direct and maternal breed additive and heterosis effects and predicted phenotypic means were estimated with multiple regression using SAS. Crosses with N resulted in higher weaning weight and less calving difficulties than beef purebreds. Due to favourable maternal additive effects of N on carcass weight and -income, crosses with British breeds had higher performance than the purebreds. (A × C) × C had overall high performance due to beneficial maternal heterosis effects on calving difficulties and carcass weight. In conclusion, utilising profitable heterosis effects have potential in commercial production, but are dependent on production systems.

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来源期刊

Acta Agriculturae Scandinavica Section A-Animal Science 农林科学-奶制品与动物科学

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： Acta Agriculturæ Scandinavica, Section A – Animal Science publishes results of original research in animal science and their applications related to the following topics: -Animal breeding and genetics -Molecular genetics -Animal physiology and reproduction -Nutrition and feeding -Animal behaviour and welfare -General animal husbandry and systems of production, including economic and technical aspects -Hygiene and quality of animal products In addition to original articles, covering basic as well as applied subjects, the journal features review articles and short communications. Acta Agriculturæ Scandinavica, Section A – Animal Science forms part of a trilogy of titles published on behalf of the Nordic Association of Agricultural Scientists (NJF). The series also includes Section B - Soil & Plant Science and the recently launched Section C - Food Economics . Acta Agriculturae Scandinavica A, B and C are available to purchase as a combined subscription. This provides access to all three journals in the series, and is available to institutional subscribers only. For full pricing information, please view the Taylor & Francis Journals Price List here. Scientists in research, teaching and extension with specialised interest in animal science and production.