Evaluation of The Effects of Alfalfa Removal and Forage Reduction on Performance of Afshari Breeding Lambs
| Autor: | zahra mahbobi, naser karimi, Abbas Jahanbakhshi |
|---|---|
| Jazyk: | perština |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | پژوهشهای علوم دامی ایران, Vol 15, Iss 1, Pp 17-28 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2008-3106 2423-4001 |
| DOI: | 10.22067/ijasr.2022.73295.1049 |
| Popis: | Introduction: Stall-fed lambs, which account for the bulk of mutton production, are one of the main sources of red meat supply in the country. In order to achieve optimal and economical production, sheep breeders must take into account the nutritional needs, food quality and dietary intake time in the diet plan of livestock. However, due to the shortage of forage and pastures in Iran, stockbreeders are forced to include more concentrate in the animals’ diet, while trying to carefully observe the concentrate proportions as well as the necessary points associated with concentrate feeding. Therefore, the purpose of this project is to evaluate the effects of alfalfa removal and reducing forage on the profitability of Afshari fattening lambs.Materials and Methods: In order to investigate the effects of reducing the amount of forage and also removing alfalfa on performance of Afshari breeding lambs, based on a factorial experiment with a completely randomized design, was done on 36 Afshari male lambs, with a mean live weight of 32.53 ± 1.9 kg and a mean age of 93 ± 6.63 days for 90 days. Experimental diets included: 1) 80 Percentage concentrate and 20 Percentage forage (10 Percentage wheat straw and 10 Percentage dry alfalfa), 2) 80 Percentage concentrate and 20 Percentage forage (20 Percentage wheat straw, 0 Percentage dry alfalfa), 3) 90 Percentage concentrate and 10 Percentage forage (5 Percentage wheat straw and 5 Percentage dry alfalfa), and 4) 90 Percentage concentrate and 10 Percentage forage (10 Percentage wheat straw and 0 Percentage dry alfalfa). Experimental diets were adjusted according to NRC (2007) standard diet tables and the constituents of the diets and their nutritional value were similar. The data were analyzed using SPSS21.Results and Discussion: The chemical composition of diets was changed with altering of the forage to concentrate ratio, and with increasing the concentrate in the diet, the amount of NFC increased and the percentage of NDF decreased. Increasing the concentrate and removing of alfalfa increased feed intake and daily weight gain throughout the period (P |
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