mohammad ali ahangarani; Mohammadreza Dehghani; abbas ali naserian
Volume 23, Issue 2 , July 2021, , Pages 179-189
Abstract
The aim of this research was to investigate the effect of adding fat powder and flaxseed oil in milk on performance, growth, health, blood and rumen parameters of 45 suckling calves (avarage body weight = 38 ± 0.5 kg) in a compeletly randomized design in 10℃ of average temperature from d 3 to ...
Read More
The aim of this research was to investigate the effect of adding fat powder and flaxseed oil in milk on performance, growth, health, blood and rumen parameters of 45 suckling calves (avarage body weight = 38 ± 0.5 kg) in a compeletly randomized design in 10℃ of average temperature from d 3 to 30 of age in individual boxes. Experimental treatments included: 1- basal starter and milk without fat supplement (control) 2- basal starter and milk with fat powder (10 g/liter of milk) 3- basal starter and milk with flaxseed oil (10 g/liter of milk). Daily weight gain from d 3 to 30 and weight at d 30 were higher in flaxseed oil treatment than control treatment (P ≤ 0.05). Calves fed flaxseed oil treatment had higher hip height than control treatment at d 30 (P ≤ 0.05). Blood cholesterol concentration was higher in control treatment than flaxseed oil treatment and blood cortisol concentration was lower in flaxseed oil treatment than control treatment (P ≤ 0.05). The ratio of total protein to albumin in flaxseed oil treatment was lower than control treatment (P ≤ 0.05). Ruminal parameters were not affected by the experimental treatments. The results of this research indicated that using of fat sources including linolenic acid as flaxseed oil in milk have a positive effect on the performance, growth and health during the first month after birth of dairy calves.
Yaghob Nozari; Morteza Chaji
Volume 21, Issue 4 , January 2020, , Pages 475-485
Abstract
The aim of the present experiment was to determine the effect of using the vitex agnus-castus (vitex) leaves as an alternative for alfalfa hay in the diet of fattening male goat kids on the performance, ruminal fermentation, digestibility of the nutrients and some blood parameters. The experimental ...
Read More
The aim of the present experiment was to determine the effect of using the vitex agnus-castus (vitex) leaves as an alternative for alfalfa hay in the diet of fattening male goat kids on the performance, ruminal fermentation, digestibility of the nutrients and some blood parameters. The experimental treatments were 1) control (without vitex) and 2) replacement of vitex leaves with 60% alfalfa hay in the control diet(equal to 18% of diet). Sixteen fattening male goat kids with the average weights of 18 ± 2 kg and ages of 4.5 months were randomly assigned to the two treatments and eight replications for 60 days. Feed consumption, weight changes and feed conversion ratio were measured every 15 days. Dry matter intake, digestibility of nutrients, daily weight gain and feed conversion ratio were not affected by theexperimental treatments in the entire experiment period. Compared to the control diet, concentrations of blood urea nitrogen (P =0.08) and cholesterol (P =0.07) tend to decrease whereas blood glucose concentration (P=0.08) tend to increase in the kids fed with the diet containing vitex leaves. Ammonia nitrogen concentration and pH of the rumen liquor in treatment containing vitex leaves were significantly lower compared to the control group (P <0.05). Consequently, the vitex leaves can be used up to 18% of diet in the feeding of fattening male goat kids as an appropriate replacement for 60% of alfalfa hay without having the negative effects on their digestion and performance.