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The dynamics of changes in body weight and parameters of linear growth of replacement heifers of the Ukrainian black-and-white dairy breed under different approaches to the organization of their feeding technology were studied. The research was conducted on replacement heifers of the Ukrainian black-and-white dairy breed with a body weight of 170 kg, since they were 6 months old. For the formation of the experimental groups, different approaches to the organization of their feeding technology were used, namely, heifers of the control group received a diet that included corn silage. In feeding the animals of the second and third (experimental) groups, respectively, 50% and 100% of such silage was replaced by mixture of corn and sorghum.

After analyzing the silage used in the experiment, no significant differences in their chemical composition were found. Therefore, the use of silage prepared from the green mass of compatible crops of corn and sorghum as part of the diets of replacement heifers did not have a significant effect on changes in their nutritional value and the content of nutrients in them, as well as the content of crude protein, provided that detailed feeding standards are met. In particular, the increase in the content of crude fiber, based on 1 kg of dry matter of the diets, was 3 and 6 g, respectively, in the animals of the second and third groups.

In the course of the experiment, no significant and probable difference was established in terms of the increase in body weight of replacement heifers from the control and experimental groups. However, at the end of the experiment, a statistically significant difference in growth intensity was established between the animals of Group III (experimental) and Group I (control), while the differences between the latter and Group II (experimental) increased to the trend level. In particular, an increase in average daily gains of heifers of experimental groups, compared to animals of the control group, on the fourth and fifth months of the experiment, respectively, by 4.0 and 6.4% and by 5.2 and 11.2% (р≤ 0.05). It was also established that the use of both traditional corn and corn and sorghum silage in the organization of animal feeding technology accelerates the achievement of economic maturity by heifers. It was determined that the body weight of replacement heifers, from the age of eight months, exceeded the requirements of the breed standard. In particular, the body weight of 8-month-old heifers was higher than the standard by 5.0 – 10.2 kg or 2.4 – 4.9%, at the age of 9 months it was higher by 11.0 – 15.7 kg or 4.8 – 6 .9%, at the age of 11 months it was higher by 30.2 – 33.0 kg or 11.4 – 12.4%.

The variability and level of body structure indices in the age dynamics of experimental animals of the Ukrainian black-and-white dairy breed proved the positive dynamics of the formation of the exterior in the direction of the dairy type. Thus, the obtained results proved the expediency of using corn and sorghum silage in the technology of rearing replacement heifers.

 

References

Alix Hugo, Gaëtan F. Tremblay, Martin H. Chantigny, Gilles Bélanger, Philippe Seguin, Keith D. Fuller, Shabtai Bittman, Derek Hunt, Francis J. Larney, Surya N. Acharya, & Anne Vanasse. (2019) Forage yield, nutritive value, and ensilability of sweet pearl millet and sweet sorghum in five Canadian ecozones  Canadian Journal of Plant Science. Vol. 99, P. 701–714. https://doi.org/10.1139/cjps-2019-0031

Amer, S., Seguin, P. & Mustafa, A. F. (2012). Short Communication: Effects of Feeding Sweet Sorghum Silage on Milk Production of Lactating Dairy Cows. Journal of Dairy Science, 95, 859-863. http://dx.doi.org/10.3168/jds.2011-4884

Bogdanov, G. O., & Kandiba, V. M. (2012). Normy i ratsiony povnotsinnoi hodivli vysokoproduktyvnoi velykoi rohatoi khudoby: dovidnyk-posibnyk [Norms and diets of high-grade feeding of highly productive cattle: reference book]. Kyiv: Ahrarna Nauka (in Ukrainian)

Carvalho, W. G.,  Katia, A. C., Patricia, C. E., Rozana, C. P., Daniel, A. A. T., & Lucilene, T. M. (2016). Silage quality of corn and sorghum added with forage peanuts. Zootecnia• Rev. Caatinga. Vol. 29 (02).  P. 465–472. https://doi.org/10.1590/1983-21252016v29n224rc

Corriher, V. A., Hil,l G. M., Bernard, J. K., & Mullinix, B. G. (2010). Performance of Finishing Steers on Corn Silage or Forage Sorghum Silage with Corn Oil Supplementation. The Professional Animal Scientist. № 26. Р. 387–392.

Drozdova, O. V., Drozdov, S. Ye., Vasylevskyi, M. V., Yeletska, T. O., & Khalin, S. F. (2018). Peretravnist pozhyvnykh rechovyn sylosiv sumisnykh posiviv kukurudzy ta sorho [Nutrient digestibility of silage from mixed maize and sorghum crops]. Naukovo-tekhnichnyi biuleten Instytutu tvarynnytstva NAAN – Scientific and Technical Bulletin of the Institute of Animal Science of the National Academy of Agrarian Science of Ukraine. Kharkiv, 120, 39-46. (in Ukrainian). https://doi.org/10.32900/2312-8402-2018-120-39-46

Fazaeli, H., Golmohhammadi, H. A., Al-Moddarres, A., Mosharraf, S., & Shoaei, A. A. (2006). Comparing the Performance of Sorghum Silage with Maize Silage in Feedlot Calves  Pakistan Journal of Biological Sciences. Vol. 9 (13).  P. 2450 -2455 . https://doi.org/10.3923/pjbs.2006.2450.2455

Getachew, G. et al. (2016). Potential of Sorghum as an Alternative to Corn Forage American J. Plant Sci. Vol. 7. P. 1106-1121. https://doi.org/10.4236/ajps.2016.77106

Han, L., Heinrichs, A. J., De Vries, A., & Dechow, C. D. (2021). Relationship of body weight at first calving with milk yield and herd life. J. Dairy Sci. Vol. 104, No 1. P. 397–404. https://doi.org/10.3168/jds.2020-19214

Heinrichs, A. G., & Losinger, W. S. (1998). Growth of Holstein dairy heifers in the United States. J. Animal Science. Vol. 76. P. 1254-1260 https://doi.org/10.2527/1998.7651254x

Ibatullin, I. I., & Zhukorskiy, O. M. (2007). Metodolohiia ta orhanizatsiia naukovykh doslidzhen u tvarynnytstvi: posibnyk [Methodology and organisation of scientific research in animal husbandry: a manual]. Kyiv: Ahrarna Nauka [in Ukrainian).

Kandyba, V. M., Ibatulin, I. I., & Kostenko, V. I. (2012). Teoriia i praktyka normovanoi hodivli velykoi rohatoi khudoby [Theory and practice of normalized feeding of cattle]. Kyiv: Ahrarna Nauka (in Ukrainian).

Lobeck-Luchterhand, K. M., Silva, P. R. B., Chebel, R. C., & Endres, M. I. (2014). Effect of prepartum grouping strategy on displacements from the feed bunk and feeding behavior of dairy cows J. Dairy Sci. Vol. 97. № 5. P. 2800 – 2807. https://doi.org/10.3168/jds.2013-7401

Oliver, A. L., Grant, R. J., Pedersen, J. F., & O’Rear, J. (2004). Comparison of Brown Midrib-6 and -18 Forage Sorghum with Conventional Sorghum and Corn Silage in Diets of Lactating Dairy Cows. J. Dairy Sci. Vol. 87(3). P. 637–644. https://doi.org/10.3168/jds.S0022-0302(04)73206-3

Pidpala, T. V., Ostapenko, O. M., & Yasevin, S. Ye. (2018). Intensyvni tekhnolohii u molochnomu skotarstvi : monohrafiia [Intensive technologies in dairy farming: monohrafiia]. Mykolaiv. 250. (in Ukrainian)

Podkówka, Z., & Podkówka, L. (2011). Chemical composition and quality of sweet sorghum and maize silages. J. of Central European Agriculture. Vol. 12 (2). Р. 294–303. https://doi.org/10.5513/JCEA01/12.2.915

Podobed L. I. et al. (2020). Tekhnolohichni, kormovi ta veterynarni aspekty vyroshchuvannia vysokoproduktyvnykh koriv [Technological, fodder and veterinary aspects of growing highly productive cows]. Kharkiv: Naukove. vydannya Instytutu tvarynnytstva NAAN. 529  (in Ukrainian)

Pomitun, I. A., & Drozdov, S. Ye. (2018). Shliakhy zabezpechennia staloi zahotivli sylosovanykh kormiv v umovakh zmin klimatu [Ways to ensure sustainable silage harvesting in the face of climate change]. Materialy Mizhnarodnoi naukovo-praktychnoi konferentsii za uchastiu FAO «Klimatychni zminy ta silske hospodarstvo. Vyklyky dlia ahrarnoi nauky i osvity» – Proceedings of the International Scientific and Practical Conference with the participation of FAO ‘Climate Change and Agriculture. Challenges for Agricultural Science and Education’. (Kyiv, 13-14 March 2018). Kyiv. P. 652–655. (in Ukrainian)

Ran T., Tang S. X., Yu X., Hou Z. P., Hou F. J., Beauchemin K. A., Yang W. Z. & Wu D. Q. (2021). Diets varying in ratio of sweet sorghum silage to corn silage for lactating dairy cows: Feed intake, milk production, blood biochemistry, ruminal fermentation, and ruminal microbial community. Journal of Dairy Science. Vol. 104(12), P. 12600–12615. https://doi.org/10.3168/jds.2021-20408

Tsiupko, V. V. (Ed.) (1989). Metodicheskiye rekomendatsii po energeticheskomu i belkovomu pitaniyu krupnogo rogatogo skota [Methodological recommendations on energy dieting in cattle feeding]. Kharkov. 68 (in Russian)

Vlizlo, V. V. et al. (2012). Laboratornyye metody issledovaniya v biologii, zhivotnovodstve i veterinarii [Laboratory research methods in biology, animal husbandry and veterinary medicine]. Lviv. 759 p. (in Russian)

Vyshnevskyi, L. V., Voitenko, S. L., & Sydorenko, O. V. (2019). Hospodarsky korysni oznaky velykoi rohatoi khudoby molochnykh porid v stadakh doslidnykh hospodarstv merezhi natsionalnoi akademii ahrarnykh nauk Ukrainy [Economically useful signs of dairy cattle in herds of research farms of the National Academy of Agrarian Sciences of Ukraine network]. Rozvedennia i henetyka tvaryn. Issue 57. P. 29 – 37. https://doi.org/10.31073/abg.57.04 (in Ukrainian)

Xiaokang Lv, Liang Chen, Chuanshe Zhou, Guijie Zhang, Jingjing Xie, Jinhe Kang, Zhiliang Tan, Shaoxun Tang, Zhiwei Kong, Zixin Liu & Zhiyan Du (2023). Application of different proportions of sweet sorghum silage as a substitute for corn silage in dairy cows. Food Science Nutrition. 11(6): 3575–3587. http://doi.org/10.1002/fsn3.3347