Seyyed Ahmad Hosseini; Mohammad Hassan Fathi Nasri; Homayoon farhangfar; masood didarkhah
Volume 22, Issue 4 , December 2020, , Pages 560-569
Abstract
In this study, the nutritional value of four camel rangeland plants, including Alhaghi Sp (AS), Haloxylon persicum (HP), Seidlitzia rosmarinous (SR) and Tamarix Gallica (TG) in different phenological growth stages including vegetating, flowering and seeding were evaluated. Rangeland species were ...
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In this study, the nutritional value of four camel rangeland plants, including Alhaghi Sp (AS), Haloxylon persicum (HP), Seidlitzia rosmarinous (SR) and Tamarix Gallica (TG) in different phenological growth stages including vegetating, flowering and seeding were evaluated. Rangeland species were randomly sampled and their chemical composition were measured. Rumen digestibility of dry matter was assessed using a fistulated camel. The results showed that the amount of crude protein of AS and SR was higher than that of other species, Also, the lowest levels of natural detergent fibers, acid detergent fibers and tannins were observed in SR (P <0/05). Slowly degradable fraction, degradation rate and effective degradability of SR was significantly higher than other species (P <0/05). Results of this study showed that SR was better than other rangeland species due to its high crude protein content and lower acid detergent fiber and phenolic compounds, so it was used instead of alfalfa at three levels of zero, 50 and %100 in camel’s diet. Feeding SR did not affect milk yield and its components including fat, lactose and total solids. Dry matter intake of dairy camels decreased with increasing of SR in diet, but milk protein and urea nitrogen increased (P <0/05). The results of this study indicated that replacement of alfalfa hay with SR in feeding dairy camels while maintaining camel production performance, reduce the cost of feeding camel and made it more economical to rear this valuable livestock.
Kamran Akbari Pabandi; Hamid Reza Mirzaei Alamouti
Volume 17, Issue 1 , April 2015, , Pages 119-129
Abstract
This experiment was conducted to investigate the effect of feeding frequency and oil supplementation to the diet on performance and feeding behavior of lactating dairy cows. Twenty four lactating Holstein cows, 12 primiparous, (BW= 626±58 Kg and DIM= 195±44 day) and 12 multiparous, (BW= ...
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This experiment was conducted to investigate the effect of feeding frequency and oil supplementation to the diet on performance and feeding behavior of lactating dairy cows. Twenty four lactating Holstein cows, 12 primiparous, (BW= 626±58 Kg and DIM= 195±44 day) and 12 multiparous, (BW= 617±25 Kg and DIM= 207±39 day) were randomly assigned to four diets contained 2.5 percent supplemental oil or no oil and feeding frequency of 3 or 1 time per day in a randomized complete block design with a 2×2 factorial arrangement. Frequency of feed delivery and oil supplementation had no effect on dry matter intake. Oil supplementation reduced slug feeding especially with feeding once per day (P<0.05). Feeding frequency and oil supplementation interaction tended to significant for milk yield (P= 0.09), as there was a numerical increase in milk yield in oil 3 time feeding with oil diet. The cows fed oil diet in 3 time feed delivery had lower milk protein (P<0.05), but milk fat increased with 1 time feeding and oil supplementation (P<0.05). The results showed that oil supplementation to mid lactating cows diet can decreased compromised effects of decreasing feeding frequency.