Archive for February, 2008
By Anuwong wongvicheng
The study on effects of dietary shrimp shell meal (SSM) on the carcass quality and the cholesterol in the longisimus dorsi meat of finishing pigs, consisted of 2 experiments in randomized complete blocks design (RCBD). The first experiment studied the effects of the shrimp shell composition on the carcass quality of finishing pigs. The second experiment was studied the effect of the shrimp shell composition on the cholesterol level and the triglyceride in the longisimus dorsi. The 36 crossbred finishing pigs 36 pigs animal were divided into 6 treatments to estimate the shrimp shell composition levels of 0, 3, 4, 5, 6 and 7% in the diets. (Duroc x Large white x Landrace).
In the first experiment, the back fat of the finishing pigs (90 kg) fed dietary at 6 and 7 % SSM show a low back fat thickness different (P<0.05) form the control group and the color levels of longisimus dorsi were significantly higher (P<0.01) score in lightness (L) and yellowness (b) in dietary SSM compare with the control. The carcass weight, loin eye area, carcass length, the first pH and the internal organs weight was not significantly different (P>0.05) among group of pigs. In the second experiment the cholesterol level was no significantly different (P>0.05), but at 7% SSM diet tent to be lowest. The triglyceride level in the longisimus dorsi was decrease (P<0.01) when SSM incorporated in to the diet, the dietary 6% SSM was showed lowest. This result indicated that the used of SSM incorporated in finishing pig diet can decrease cholesterol and triglyceride in meat and increase the meat color of pig also.
Department of Animal Technology, Maejo University Chiangmai, Thailand.
February 29 2008 | Research | No Comments »
Ruminants have the ability to utilize fibrous feeds and non-protein nitrogen and to convert the low quality feeds into high quality protein. This ability is due to their contain rumen microbial fermentation of plant carbohydrate and nitrogenous compounds to volatile fatty acids and microbial biomass that serve the animal as sources of energy and protein (Calsamiglia et al., 2007).
However, ruminal fermentation also produces methane and ammonia, and these end-products are a loss of energy and nitrogen, respectively. The use of plant extracts appears to be one of the most natural alternatives to antibiotic use in animal nutrition (Wallace, 2004). Many of the investigations conducted to present on essential oils have been laboratory based (i.e., in vitro incubations) and of a short-term nature (Busquet et al., 2005; Castillejos et al., 2006). Herbs have been used by human beings as a source of anti-microbial agents for maintaining a balanced microbial ecosystem of the gastrointestinal tract, especially in the tropical regions of the world.
The anti-microbial activity of herbs is considered to be due to the presence of a variety of essential oils, which are volatile and are responsible for the characteristic aroma of a specific spice. These essential oils may have very specific antimicrobial activity and may affect rumen fermentation significantly. Therefore, the objective of this experiment was to investigate the supplementation of herbs on rumen ecology and digestibility in native beef cattle.
February 29 2008 | Article | No Comments »
By Puliphong jitmano
This experiment was conducted to study the degradability of DM, CP and NDF in total mixed ration with ensiled pineapple waste and rice straw as sources by using nylon bag technique. Four crossbred Holstein Friesian steers with average weight 400 + - 30 kg were randomly allotted to fed one of four dietary treatments. They were TMRs composed of ensiled pineapple waste: rice straw at different ratio, i.e. 50:0, 45:5, 40:5 and 35:15 (dry matter basis) respectively, according to Latin square design. Each period lasted for 21 days. Chemical composition showed that all the experimental diets (TMR) were high in nutritive value. Dry matter content of total mixed rations increased with decreasing level of ensiled pineapple waste. The nylon bag technique revealed that DM, CP and NDF digestibility of TMR increased with incubation times from 4 to 96 hours TMR 1 (50:0) had significantly higher in % DM, CP and NDF degradability than the others (P<0.05). The potential degradability (A+B) of DM, CP and NDF was significantly higher in TMR 1 (P<0.05). TMR 2 had significantly higher in CP degradability than the others.
Department of Animal Technology, Maejo University Chiangmai , Thailand.
February 28 2008 | Research | No Comments »
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