Performance and nutritional status of Holstein crossbred cows in a selected area of Bangladesh under the existing farming system.

IF 1.5 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Journal of Advanced Veterinary and Animal Research Pub Date : 2024-09-29 eCollection Date: 2024-09-01 DOI:10.5455/javar.2024.k818

Md Aliar Rahman, Rakhi Chowdhury, Khan Md Shaiful Islam

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引用次数: 0

Abstract

Objectives: This study aimed to compare the body weight (BW), milk yield, nutritional status, and profitability of moderate genetic (MG) and high genetic (HG) merit of Holstein crossbred (HC) cows in a tropical region under the existing farming system.

Materials and methods: Data was gathered from 204 nursing cows of MG (n = 99) and HG (n = 105) merit of HC cows throughout a year in the dairy zone Keraniganj, Bangladesh. HC cows of MG and HG merit contained 50.0%-67.7% and 75.0%-87.5% Holstein blood, respectively. Data on genetic merit, BW, lactation stage and number, daily milk yield, feed intake, feed, and milk price were documented. All variables were except genetic merit analyzed using one-way analysis of variance.

Results: HC cows of MG and HG merit had 433 and 493 kg BW (p < 0.01), and daily produced 11.99 and 14.06 kg milk (p = 0.07) with having 0.99 and 1.15 feed efficiency (p = 0.06), respectively but dry matter intake did not vary (p > 0.05). HC cows of both genetic merit daily offered surplus metabolizable energy and digestible crude protein through roughage and concentrate than their requirement (p > 0.05). The milk production cost of both genetic merit HC cows was alike (p > 0.05), whereas almost two times more profit was obtained in HG merit HC compared to MG merit HC cows (p < 0.05).

Conclusion: HC cows of HG merit showed superior potentiality of milk yield, profit, and feed efficiency, whereas MG merit HC cows revealed inferior feed efficiency and milk yield.

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孟加拉国选定地区荷斯坦杂交奶牛在现有耕作制度下的生产性能和营养状况。

研究目的本研究旨在比较热带地区现有养殖系统下荷斯坦杂交奶牛（HC）中度遗传（MG）和高度遗传（HG）的体重（BW）、产奶量、营养状况和盈利能力：在孟加拉国 Keraniganj 奶牛区全年收集了 204 头哺乳母牛的数据，这些母牛分别是中度遗传（MG）（n = 99）和高度遗传（HG）（n = 105）。MG和HG血统的HC奶牛分别含有50.0%-67.7%和75.0%-87.5%的荷斯坦血统。记录了遗传特征、体重、泌乳阶段和次数、日产奶量、采食量、饲料和牛奶价格等数据。除遗传优劣外，所有变量均采用单因素方差分析：MG和HG的HC奶牛体重分别为433和493千克（p < 0.01），日产奶量分别为11.99和14.06千克（p = 0.07），饲料效率分别为0.99和1.15（p = 0.06），但干物质摄入量没有变化（p > 0.05）。两种遗传特性的高产奶牛每天通过粗饲料和精料提供的可代谢能量和可消化粗蛋白均超过其需要量（p > 0.05）。两种基因型高产奶牛的产奶成本相同（p > 0.05），而 HG 基因型高产奶牛的利润几乎是 MG 基因型高产奶牛的两倍（p < 0.05）：结论：HG 品系的 HC 奶牛在产奶量、利润和饲料效率方面表现出更大的潜力，而 MG 品系的 HC 奶牛在饲料效率和产奶量方面表现较差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Advanced Veterinary and Animal Research Veterinary-Veterinary (all)

CiteScore

2.70

自引率

7.10%

发文量

审稿时长

6 weeks

期刊介绍： Journal of Advanced Veterinary and Animal Research (JAVAR) - is an open access, international, peer-reviewed, quarterly, highly-indexed scientific journal publishing original research findings and reviews on all aspects of veterinary and animal sciences. Basic and applied researches on- - Anatomy & histology - Animal health economics - Animal nutrition - Animal reproduction - Animal science - Antimicrobial resistance (AMR) - Biochemistry - Biotechnology - Dairy science - Epidemiology - Food hygiene and technology - Genetics and breeding - Immunology - Microbiology - Parasitology - Pathology - Pharmacology & toxicology - Physiology - Poultry science - Preventive veterinary medicine - Public health - Surgery & obstetrics - Veterinary extension studies - Wildlife & aquatic medicine - Zoo animal medicine.