Abstract
This experiment was conducted and aimed to reducing mortality and losing the weight of birds transported to the slaughter house through reducing or Transport stress removal and thus to reduce financial losses. 150 birds used almost equal weights that were divided into three treatment groups and by five replicates for each treatment is control treatment (T1) without giving anything and treatment with salicylic acid concentration 1 g / liter of drinking water (T2) and treatment with ascorbic acid (T3) concentration 0.5 g / Liter of drinking water provided 24 hours before its transport. The transport process resulted in a highly significant decrease (P ≤ 0.01) in body weight in treatment T1 as it reached 4.66%, while it reached 1.68 and 1.09% in treatment T2 and T3, respectively. The transport process led to an increase in body temperature, H / L ratio, the concentration of glucose, aspartate transaminase (AST) and alanine transaminase (ALT) in the blood serum, as the transport process led to a very significant decrease (P ≤ 0.01) in the cholesterol concentration, Uric acid, intestinal villi length and crypts depth. T2 and T3 treatments showed their ability to reduce transport stress, especially T3, where they outperformed T1 in most traits. It is concluded from the study that adding ascorbic acid by 0.5 g / L drinking water 24 hours before transporting the chicks to the slaughter house reduces the transport stress and lessen financial losses, so it is recommended to use it.
Highlights
Poultry transport is one of the key links in the poultry industry [30]
This study aims to know the effectiveness of the use of salicylic acid and ascorbic acid in reducing the negative effects of physiological stress resulting from transportation and reducing financial and economic losses
The treatments with salicylic and ascorbic acids resulted in reducing the stress that birds are exposed to before transport and during transportation in a highly significant way (P ≤ 0.01), which can be inferred from H/L ratio. , glucose, cholesterol, and uric acid significantly decreased while increased total protein before transport in T2 and T3 compared to T1, while glucose increased and cholesterol, total protein and uric acid decreased in the three treatments after transfer (Table 4)
Summary
Poultry transport is one of the key links in the poultry industry [30]. As all types of birds used in intensive production systems are transported at least twice during their lifetime and distances ranging from several kilometers to tens of hours' trips [39, 28, 23, 38]. MATERIALS AND METHODS One hundred and fifty Ross 308 broiler chickens were used in this experiment, 35 days of age, mostly equal weights They were divided into three groups with five replications per treatment (10 birds per replicate) as follow: The first treatment is T1, control without addition, the second treatment, T2, the addition of salicylic acid with drinking water at a concentration of 1 g / litre, the third treatment, T3 addition of ascorbic acid with drinking water at a concentration of 0.5 g / l water. The presence of short-chain fatty acids and persistence Its production by beneficial bacteria is essential for sustaining and vitality of crypts of Lieberkuhn [33, 12, 9], or the reason for this significant reduction may be due to pre-transport fasting [36] This experiment confirmed the results of previous relevant studies, the roles of ascorbic and salicylic acids in overcoming stress factors, including transport stress that birds were exposed to during transportation. We suggest providing ascorbic acid 0.5 g / l drinking water or salicylic acid 1 g / l drinking water 24 hours before transporting broiler chickens to the slaughterhouse
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