各种非遗传因素对默拉水牛生产性能影响的研究

IF 0.2 4区农林科学 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Buffalo Bulletin Pub Date : 2022-12-26 DOI:10.56825/bufbu.2022.4143157

Rana Partap Singh Brar, S. Kaur, N. Kashyap, C. S. Mukhopadhyay, P. Malhotra

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引用次数: 0

摘要

在这项研究中，收集了在卢迪亚纳Guru Angad Dev兽医和动物科学大学董事会畜牧场饲养25年的Murrah水牛的生产特性数据。非遗传因素的影响，即；产仔期、产仔季节、第一次产仔时的年龄和产奶量对日产奶量有显著影响，随后对数据进行了校正，以研究各种泌乳曲线模型的比较，从而确定泌乳曲线的形状，并为Murrah水牛开发合适的泌乳曲线模型。研究中使用的数据涉及517293份日产奶量记录，涉及213头公牛所产644头Murrah水牛的1524次泌乳。使用SAS9.3最小二乘法进行分析。产仔期对305MY、全泌乳产奶量（CLMY）、高峰产奶量、泌乳期和服务期有显著影响（P<0.01）。产仔季节对高峰产量、泌乳期和服务期有显著影响（P<0.01）。首次产仔年龄对产量峰值有显著影响（P＜0.05）。产次对305MY、全泌乳产奶量（CLMY）、高峰产奶量、泌乳期和服务期有显著影响（P<0.01）。

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Study on effect of various non-genetic factors on performance traits of Murrah buffaloes

In this study, the data was collected on production traits of Murrah buffaloes w.r.t. 1 to 4 parities for the period of 25 years maintained at Directorate Livestock Farm, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana. The effect of non-genetic factors viz; period of calving, season of calving, age at first calving and parity on daily milk yield were found to be significant and subsequently data were corrected to study the comparison of various lactation curve models to define the shape of lactation curve and to develop a suitable lactation curve model for Murrah buffaloes. The data used in the study pertained to 517293 daily milk yield records pertaining to 1524 lactations of 644 Murrah buffaloes sired by 213 bulls. The analysis was done using SAS 9.3 Least squares analysis. The period of calving showed significant (P<0.01) effect on 305 MY, complete lactation milk yield (CLMY), peak yield, lactation length and service period. The season of calving showed significant (P<0.01) effect on peak yield, lactation length and service period. The age at first calving showed significant (P<0.05) effect on peak yield. The parity showed significant (P<0.01) effect on 305 MY, complete lactation milk yield (CLMY), peak yield, lactation length and service period.

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来源期刊

Buffalo Bulletin AGRICULTURE, DAIRY & ANIMAL SCIENCE-

CiteScore

0.50

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Buffalo Bulletin is published quarterly in January-March, April-June, July-September and October-December. Contributions on any aspect of research or development, progress reports of projects and news on buffalo will be considered for publication in the bulletin.