Experimental determination of comparative sensitivity of eimeria to chemotherapeutic preparations and phytobiotics

The sensitivity of the organism of broiler chickens artificially infested with a mixture of three types of eimeria to anti-eimeria drugs used in the Belgorod region was determined. For the experiment, synthetic coccidiostatics (decoquinate, maduramycin, nicarbazine, robenidin), ionophore antibiotics (lasalocid, monensin, narazine) and a complex phytobiotic “AdiCox AR” were taken. The smallest loss of live body weight of chickens was observed when feeding them in the diet of lasalocid, then decoquinate. Feeding the specialized feed additive “AdiCox AR” ensured the preservation of gains in live weight of chickens by 19.0% less than the most effective ionophore antibiotic lasalocid in our experiments. Then, in descending order, followed: narazine 10%, monensin 20%, nicarbazine 25%, maduramycin 1%, robenidin 6.6%. In connection with the obtained results, we consider it expedient to use lasalocid 15% at a dose of 500 g / t feed, decoquinate 6% at a dose of 500 g / t feed and AdiCox AR at a dose of 300 g / tons of feed. The use of narazine 10%, monensin 20%, nicarbazine 25%, maduramycin 1% should be carried out under constant monitoring of the sensitivity of the pathogen to the listed drugs. We consider the use of robinidin 6.6% inappropriate.

Subchronic Acephate Exposure Induces Immunotoxicity in White Leghorn Cockerels

We investigated the subchronic immunotoxicity of the phosphoramidothioate organophosphorous insecticide, acephate in white leghorn cockerels (WLH). The cockerels were divided into five groups; C1 (plain control), C2 (vehicle control), T1, T2, and T3 which received acephate suspended groundnut oil for 60 days at doses of 21.3, 28.4 and 42.6 mgkg−1respectively. The live body weight gain, absolute and relative weights of the spleen, thymus, and bursa of Fabricius, hemoglobin (Hb), total erythrocyte counts (TEC), packed cell volume (PCV) and lymphocytes were significantly decreased. However, monocytes, eosinophils, heterophils, and basophils were significantly increased. Total protein, albumin and albumin to globin ratio, the antibody response to RD-F and delayed-type hypersensitivity response to DNCB dye or PHA-P, erythrocyte and brain Acetylcholinesterase activity was also significantly reduced in T2 and T3. At 40 and 60 days of acephate exposure, nitrate and nitric oxide production by RD-F and mitogen Con A stimulated peripheral blood and splenic lymphocytes, as well as lymphocyte proliferation in response to antigen RD-F and mitogen Con A stimulation, were significantly decreased in groups T2 and T3. Furthermore, dose-dependent increases in the frequency of micronuclei formation, varying intensity serum protein bands with different protein fractions (14.85KDa), and splenic DNA laddering (180 bp) were observed in groups T2 and T3. Histopathologically, the spleen and bursa showed morphological changes and mild lymphocyte depletion. In conclusion, low-level acephate exposure may affect acetylcholinesterase, lymphocytes, and immune responses in cockerels. As a result, it should be considered when assessing immunotoxicity and the risk to human and animal health.

Relationship of some metabolic Hormones with Increased Live Body Weight of Male and Female of Karakul and Awassi Lambs

This study was conducted in the animal field of the Al-Kafeel Company from November 2019 till May 2020 to investigate the possible association between growth hormone (GH) and thyroxine (T4) with the growth traits in Awassi and Karakul sheep. The total number of animals which used in the study was 60 lambs, 28 (13 males and 15 females) from Karakul and 32 (18 males and 14 females) from Awassi. Blood samples were collected at birth, weaning, and six months of age, and both GH and T4 concentrations were measured. Results showed higher values of T4 for Karakul as compared with Awassi at birth and weaning. Karakul breed was also exhibited significantly higher values of GH over Awassi breed only at weaning, while, no significant differences were observed at birth and six months of age. Karakul lambs showed higher weights as compared with Awassi lambs at all studied periods. A highly significant (p < 0.01) positive correlation was observed between T4 concentration and the weight of lambs at most studied periods. Whereas, GH did not exhibit any correlation with growth traits measured in both breeds. The elevated T4 might be one of the reasons for superiority of Karakul over Awassi breed in live body weights. This high correlation between T4 and growth traits could be used in the early selection of lambs to improve the weights of sheep at marketing.

Use of Mediterranean By-Products to Produce Entire Male Large White Pig: Meat and Fat Quality

A total of 70 male growing non-castrated pigs (Large White), with a 23.07 ± 2.87 kg average body weight (BW), were randomly allocated to three treatments in a 103 day trial: a CONTROL diet and two experimental diets, ALLIUM (5 g/kg of Allium spp. extract) and OLIVE (100 g/kg of olive pulp). Animals were slaughtered at 115 kg live body weight. Meat and fat quality were analyzed. Animals fed ALLIUM and OLIVE had higher water holding capacity (WHC) than those fed the control diet. No significant differences were observed between groups for cooking loss, drip losses and color CIELab. No antioxidant effect was observed on an oxygen radical absorbance capacity (ORAC) test. Animals fed OLIVE presented a more unsaturated fatty acid profile than CONTROL and ALLIUM. Meat from ALLIUM group and OLIVE showed her values of brightness and meat odor than CONTROL. Mean scores of sensory analyses (color, odor, flavor and juiciness) of cooked samples were similar for the three treatments, with the meat samples from the ALLIUM and OLIVE treatments being less hard. Consumers did not reflect a preference for any of the treatments. Both by-products could be used for pork production.

Evaluation of multi decked transported sheep in a hot and humid tropical environment

Unavoidable transportation as a supporting factor in meat production is a common cause of stress that may affect economic loss and welfare concerns. This study was evaluated sheep’s economic losses and physiological responses with two and three-level deck numbers. This study was used 127 heads of local Indonesian sheep, 8-10 months in age with 18-24 kg live body weight. A total of 72 heads of sheep were used for three deck levels (study 1) and 52 heads of two deck levels (study 2). All the sheep were loaded on the pick up at a 0.14 m2/head of density and transported for 22 hours without fed and water access during the journey. During the study, ambient temperature and relative humidity fluctuated between 29 and 34oC and 74 and 93%, indicating that the season was thermally stressful and unfavorable for sheep transport. The results showed that transported sheep using an open pick up for 20 hours in Indonesian conditions significantly affected physiological and blood parameters as indicator stress and inventory loss caused economic losses. It can be concluded that transported sheep into two or three levels of the deck in tropical climate had a high risk for sheep in terms of economic and animal welfare concerns.

The Effect of Using Rice Bran With Enzymes on The Production Performance of Turkey

This study was conducted in the poultry field of the Department of Animal Production at the University of Tikrit, Faculty of Agriculture, and the aim of this study was to know the effect of using rice bran at a rate of (0, 15, 20%) with and without adding a mixture of enzymes containing amylase, protease and cellulose by 0.5 g/kg in turkey rations for a period of 10 weeks, 120 unsexed Bronze turkeys were used. The birds were distributed into six treatments, each treatment included four replicates (cage) five birds. The results showed a significant superiority (P ≤ 0.05). For the second treatment (0 % rice bran + 0.5 g/kg mixture of enzymes) in live body weight, weight gain, feed conversion efficiency, while it was significantly (P ≤ 0.05) superior to the sixth treatment (20% rice bran + 0.5 g/kg mixture of enzymes) In feed consumption compared to the third treatment, and there were no deaths in any of the study treatments throughout the experiment period.

Use of body measurements to predict live body weight of Simmental bull in Lembang Artificial Insemination Center, West Java

This research aimed to evaluate the use of body measurements (chest girth (CG), body length (BL), and shoulder height (SH)) to predict live body weight (BW) of Simmental bulls in Lembang Artificial Insemination Center, West Java. This research was carried out in December 2019 using a survey method of which all Simmental bulls aged 1—12 years were used in this study. Data were analyzed using simple and multiple correlations and regression models using the R program. Pearson correlation analysis was used to analyze correlation between BW and body measurements, while to find the fittest and more parsimonious regression model we used determination coefficient (R2) and stepwise regression analysis as criteria of selection. The results showed that the average of BW, CG, BL, and SH were 814.54 ± 144.18 kg, 215.72 ± 16.50 cm, 170.13 ± 17.09 cm, and 142.79 ± 11.01 cm, respectively. The results of this study also indicated that CG, BL, and SH positively and significantly correlated with BW, with correlation value of 0.90, 0.85, and 0.79, respectively. Combination of CG, BL, and SH produced the highest correlations value (r = 0.92) with the fittest regression model for predicting BW, namely BW=-888.64 + 4.21*CG + 2.83*BL + 2.20*SH, with R2 of 0.86.

The Effect of Adding Chitosan and Oxytetracycline to Wheat-Soybean Diet on The Productive Performance of Broiler Chickens

This experiment was conducted in the poultry farm of the Animal Production Department/College of Agriculture/Anbar University, for the period from 8/12/2019 until 23/3/2019 for (42 days). The experiment aims to compare the addition of two different levels of Chitosan and one level of antibiotic to the wheat-soybean diet and their effect on the productive performance of broiler chickens from the age of 7-42 days. The experimental treatments were T1: control (without any addition), T2: addition of 0.2 g Oxytetracycline/kg feed, T3: addition of 1 g Chitosan/kg feed and T4: addition of 2 g Chitosan/kg feed. The birds were randomly distributed to four treatments, with 3 replicates per treatment, and 12 birds for each replicate, where 144 chicks, 7 days old of Ross broiler chickens with an average weight of 168.7g were used in the experiment. The results showed that there were no significant differences in live body weight, weight increase and the relative growth rate of broiler, while significant differences occurred between treatments in the feed consumption rate during the first and fifth week and the duration from 7-21 days The T4 decreased significantly from T2 and T3, after which there was a significant decrease in the treatment of T3 from the T1 and T2 treatments in the fifth week. As for the feed conversion factor, there was no significant difference, as well as the percentage of mortality during the 7-42 days.

Genetic and Phenotypic Characterization of Domestic Geese (Anser anser) in Egypt

The objectives of this study were to achieve phenotypic characterization of three domestic Egyptian goose populations collected from three different geographical zones (Kafr El-Sheikh, Fayoum and Luxor) and to perform genetic characterization of these three populations based on mtDNA D-loop and 12 microsatellite markers. The body measurements of 402 domestic mature geese belonging to these three governorates showed that the lengths of the head, culmen and tarsus and the live body weight varied significantly among the three studied Egyptian goose populations. After alignment of a 710-base-pair segment of the goose mtDNA control region, there was a single haplotype in the three Egyptian goose populations, indicating the same maternal origins. The genotyping of the 12 microsatellite markers showed low diversity indices, including average observed (NA) and effective (NE) number of alleles and observed (HO) and expected heterozygosity (HE) (3.333, 1.760, 0.277 and 0.352, respectively), and a high inbreeding coefficient (FIS = 0.203) across the three Egyptian goose populations. The high inbreeding and low genetic and morphological differentiation of Egyptian geese could be corrected by establishing a large base population through capturing small populations with the highest genetic variation. The findings of the current study can therefore serve as an initial guide to design further investigations for developing conservation programs of Egyptian geese genetic resources.

Peculiarities of age-related morphological changes in the dermal-hair cover of the Pamir yak ecotype bred in the mountain zone of Northern Tajikistan

In the process of animal adaptation to changing environmental conditions, the hair cover, which is known to perform a heat-protective function primarily, plays a significant role. The hair cover of animals undergoes changes depending on the season of the year and the natural and climatic zone in which the animals live. It has its peculiarities in different species (breeds). The nature and features of the hair cover of animals are often used by scientists to compile zoological systematics, assess the health and constitution types of animals, their acclimatisation ability, etc. In this article, the authors reviewed age-related changes in weight, size, thickness and tightness of animal skins (changes in skin thickness from the ridge to the floor) and features of the hair cover of the skin’s yaks of Northern Tajikistan. The authors also noted that in all animals, the weight of hides increases in proportion to the rise in live body weight. The absolute importance of skins, up to the age of half a year of yaks, is almost two times higher than cattle. In yaks at one- and three years old, the thick- ness of skins at the standard point in these animals is somewhat comparable. But the thickness of the pelts in the collar and area of hiding yak next to the floor remains higher by about 25-40%. Yaks are known to have three main categories of hair: long hairs (in the abdominal region of the hide and on the tail), short hairs (on the rump, neck and back) and down inches (in all parts of the animal’s fur). Long coats are also the thickest. The hair length of newborn yaks is 187.60±2.66 mm, of one-year-old yaks 452.50±2.52 mm, and of six-year-old yaks, it reaches 475 mm. The authors determined the total amount of hair of different categories in the three topographic parts of the body: in the rump, the sum of hair is 1545 hair units; in the collar part, the sum of hair is 1590 hair units; in the abdominal area of the body the sum of hair is 1770 hair units. The collar and rump do not have long hairs, unlike the abdomen. Downy hairs are characteristic of all parts of the hide but predominate in the scruff and collar. The dynamics of age-related changes in the hair cover of yaks have been determined.