Authors: N. A. Morozkov, G. P. Maysak
Perm Agricultural Research Institute – division of Perm Federal Research Center of Ural Branch of the Russian Academy of Sciences, Perm, Russia, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract. The purpose of the research was to study the effect of feeding by sainfoin haylage in the dry period (21 days before calving) and in the period of early lactation (50 days after calving) on the metabolic processes of dairy cows and the results of reproduction. The article gives the brief description of sainfoin (Onobrychis arenaria Kit.) as a valuable feed protein crop that can be successfully cultivated in Perm region conditions. High sugar content in sainfoin forage was noted 4.86 %, which is 1.6 times higher compared with standard class 1 for legume haylage first class. Methods. Experiments for use of sainfoin haylage in feeding highly productive cows were conducted in 2018. Cows of the experimental groups received a diet including sainfoin haylage. Cows in the control group received 5 kg of poaceous grass hay as a fodder. The first experimental group got 50 % of forage dry matter as sainfoin haylage. The second experimental group received 100 % of forage dry matter as sainfoin haylage. Results. Hay replacing by equal dry matter amount of sainfoin haylage provided positive effect on immuno-biochemical parameters of cows blood. The protein content increased in the blood plasma of cows during the time of the experiment: in the second experimental group by 4.3 g/l (5.47 %, p < 0.01) and reached 82.80 g/l, in the first experimental group by 1.72 % (p < 0.05), in the control – by 2.28 % (p < 0.05). Feeding sainfoin haylage to cows had a positive effect on their reproductive functions. The service period for cows of the second experimental group was shorter by 8.1 days (9.28 %, p < 0.01) compared with the first experimental group and by 21 days (24.05 %, p < 0.05) shorter than in the control group. The scientific originality of the work is that for the first time the biochemical composition of sainfoin was studied thoroughly in Perm region and the results of sainfoin haylage feeding to animals were presented.
Keywords: sainfoin, sugar, urea, haylage, fodder crop, cows, cholesterol.
For citation: Morozkov N. A., Maysak G. P. Rezul’tat ispol’zovaniya senazha iz espartseta peschanogo v ratsionakh molochnykh korov [The result of using a haylage made of sandpaper in the diets of dairy cows] // Agrarian Bulletin of the Urals. No. 10 (201). 2020. Pp. 57–63. DOI: 10.32417/1997-4868-2020-201-10-57-63. (In Russian.)
