Partial substitution of soybean meal by slow-release nitrogen (zenitro™) decreases feed cost in lactating dairy cows
| Autor: | Ravindra K. Yogi, Sudhir K. Singh, M.S. Mahesh, Srilatha Atmakuri, B. Chandran, U. Balakrishnan |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Indian Journal of Animal Nutrition. 37:401-404 |
| ISSN: | 2231-6744 0970-3209 |
| DOI: | 10.5958/2231-6744.2020.00064.x |
| Popis: | An on-farm trial was conducted in a commercial dairy farm to evaluate the effect of inclusion of slow-release nitrogen (SRN) on the performance of milking cows and associated monetary benefits. Twenty early lactating Holstein Friesian cows were used in the trial in such a way that first 18 days served the control (T1) and the next 21 days were treatment (T2) phase in which 1% SRN (Zenitro™, Kemin Industries) partially substituted soybean meal (SBM) on an isonitrogenous basis in the concentrates. All the cows were fed a total mixed ration comprising of corn silage, wheat straw and concentrate for a duration of 39 days. Results revealed that milk yield between the 2 groups did not differ (20.0±0.89 vs. 20.3±1.03 kg/d; P>0.05). Similarly, milk composition estimated in terms of fat and solid not fat was also not altered. Nevertheless, there was a net economic gain of ` 14.5/cow/d on incorporating SRN. Therefore, this study demonstrated that SRN at 1% level in the concentrate could effectively substitute a part of SBM for lactation diets, whilst also improving economic sustainability in dairy farming. |
| Databáze: | OpenAIRE |
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