سلام جناب دکتر نوریان با اقلام زیر جیره میخوام واسه میش شیرده ممنون میشم ملاحضه فرمائید جو کود مرغی ارد گندم کاه گندم مکمل بافری مکمل معدنی فسفر شصت

میش شیرده تک قلوزا

🌿سوال آیا می شود سیب زمینی را جایگرین گندم یا جو کرد ؟ مقاله زیر در سال 2012 در گاوهای شیری اثبات کرده خیر بی فایده است https://journals.co.za/doi/abs/10.10520/EJC124544

South African Journal of Animal ScienceVol. 42, No. 3 Effect of dietary starch source on milk production and composition of lactating Holstein cows G.H.R. Mosavi, F. Fatahnia, A.A. Mehrabi, H.R. Mirzaei Alamouti and H. Darmani Kohi Published Online:1 Jan 2012https://hdl.handle.net/10520/EJC124544 👇👇👇

Abstract The objective of this study was to evaluate the effects of four sources of starch on milk production and composition, nutrient digestion and blood metabolites of lactating Holstein cows. Four multiparous Holstein cows (708 ± 70 kg of body weight; 83 ± 9 days in milk) were used in a 4 x 4 Latin square design with 21-d periods. The concentrate portion of the diet contained wheat, barley, maize or potato as the primary source of starch. Intake of dry matter (DM) ranged from 18.7 kg/d to 19 kg/d, and was similar among treatments. Milk production was higher in cows fed the wheat-based diet compared with other diets while the milk fat concentration of the cows fed the maize-based diet was the highest. Milk protein concentration was unaffected by the source of dietary starch. Cows fed the potato-based diet had a lower milk protein, lactose and solid-non-fat yield. Milk yield/kg of DM intake and net energy for lactation (NEL)/NEL intake were higher in cows fed wheat-, barley- or maize-based diets compared with those fed the potato-based diet. Feed nitrogen efficiency was higher in cows fed the maize-based diet compared with the other experimental diets. Total tract apparent digestibility of organic matter, crude protein and ether extract were higher in cows fed the wheat- or maize-based diets compared with those fed barley- or potato-based diets; however, total tract apparent digestibility of neutral detergent fibre and acid detergent fibre were higher in cows fed the wheat-based diet compared with those fed the potato-based diet. These results showed that improved production performance in cows fed the wheat-based diet appeared to be because of greater nutrient digestibility and greater nutrient utilization efficiency. Furthermore, potato starch is not superior to grain starch as a readily available energy source for lactating dairy cows.

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