通过基因改良投资发展水牛的途径

Q2 Veterinary
I. Soliman, Basher Bahgat
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引用次数: 0

摘要

乳制品是动物蛋白的重要来源,特别是对亚洲国家的营养脆弱群体和素食者而言。因此,增加国内牛奶供应的方法是通过对具有高预测奶差的选定水牛父系的精液进行遗传改良来提高水牛奶产量。以埃及人工授精中心为例,应用动态数学投资模型估算遗传投资的收益率(IRR)。IRR的有效变量除经济变量外,还包括繁殖性状和饲料效率。估计最可能的IRR水平是可行的,即19.71%。如果生殖效率变量的变化幅度更大,即受孕服务次数、第一胎年龄和服务时间每增加10%,IRR将下降7.51%。饲料效率每降低10%,内部收益率将降低9%。如果饲料成本、精液价格和牛奶价格变化10%,IRR将下降7%。在建立之前,要以中等价格进口高预测乳差的水牛种精液,需要国内遗传优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An Approach for Dairy Buffalo Development through Investment in Genetic Improvement
: Dairy products are an essential source of animal protein, particularly for nutritional vulnerable groups and vegetarians in Asian countries. Therefore, the approach towards increasing the domestic supply of milk is to raise the buffalo milk yield via genetic improvement from the semen of the selected buffalo sire that possesses a high predicted milk difference. Data were collected from Artificial Insemination Centers in Egypt, as a case study, to apply a dynamic mathematical investment model for estimating the rate of return (IRR) to genetic investment. The effective variables in IRR, besides the economic variables, are the reproductive traits and feed efficiency. The estimated most probable level of IRR was feasible, i.e., 19.71%. A worse change in the reproductive efficiency variables, i.e., the aggregate of 10% increase in the number of conception services, age at the First Calving, and the service period, would decrease the IRR by 7.51%. A decrease in feed efficiency by 10% would decrease the IRR by 9%. A worse change by 10% in the feed costs, price of semen, and milk price would decrease IRR by 7%. To import buffalo sires' semen of high predicted milk difference at moderate prices till establishment, domestic genetic merit is required.
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来源期刊
Journal of Buffalo Science
Journal of Buffalo Science Veterinary-Veterinary (all)
CiteScore
2.40
自引率
0.00%
发文量
9
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