Effect of substituting potato plant residues instead of straw on performance, blood and rumen parameters in Sanan she goats

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Document Type : Research Article (Regular Paper)

Authors

Department of Animal and Poultry Nutrition, Animal Science Faculty, Gorgan University of Agricultural Science and Natural Resources, Gorgan 49138-15739, Iran

Abstract

This experiment was conducted to investigate the effects of two levels of potato plant residues on performance, digestibility, rumination behavior, blood, and rumen parameters in dairy goats. For this purpose, eighteen 3-year old Saanen she goats with an average weight of 38.19±0.84 kg were used. This experiment was conducted in a completely randomized design with 3 treatments, including 0, 50, and 100% replacement of potato plant instead of straw, and 6 replications. The goats were housed in a group pen with free access to water. To evaluate the growth performance, the goats were weighed at the beginning and end of the period, and feed intake was recorded daily. Additionally, blood and ruminal fluid samples were collected on the final day of the experiment. There were no significant differences in eating, chewing, and resting behavior between the treatments, but, rumination behavior increased with consumption of potato plant residues (P<0.05). There were no significant changes (P>0.05) in blood total cholesterol, triglycerides, glucose, total protein, albumin, globulin, creatinine, and the albumin/globulin ratio with increasing the dietary potato plant content. Only blood urea levels showed a significant increase (P<0.05) with higher dietary potato plant content. Using different levels of potato plant residues increased the average daily weight gain, final body weight, feed intake, and improved feed conversion ratio (P=0.0001). Blood concentration of ammonia nitrogen increased significantly with increased consumption of potato plants. Based on the results of this experiment, potato plants can replace up to 100% of straw in goat feed.

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References

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Available Online from 09 May 2026

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