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Full-Text Articles in Medicine and Health Sciences
Rectal Temperature And Respiration Rate As Indicators Of Heat Stress In Broiler Chickens Subjected To Early-Age Thermal Conditioning And Vitamin C Supplementation, Zoran Ruzic, Zdenko Kanacki, Slobodan Stojanovic, Zorana Kovacevic, Slobodan Knezevic, Srdan Todorovic, Smiljana Paras
Rectal Temperature And Respiration Rate As Indicators Of Heat Stress In Broiler Chickens Subjected To Early-Age Thermal Conditioning And Vitamin C Supplementation, Zoran Ruzic, Zdenko Kanacki, Slobodan Stojanovic, Zorana Kovacevic, Slobodan Knezevic, Srdan Todorovic, Smiljana Paras
Turkish Journal of Veterinary & Animal Sciences
One of the major concerns in poultry production presents heat stress (HS) and it is followed by significant economic loss manifested by reduced growth, decreased immune response, increased mortality, etc. The objective of this study was to investigate whether the early-age thermal conditioning (ETC) and vitamin C (Vit.C) treatments, individually and in combination, produce their beneficial effects through increased heat release manifested as a change in respiration rate consequentially leading to a decrease in the chicken's body temperature and thus reduce the harmful effects of HS. A 400 broiler chicks mixed sex male and female were split into four groups. …
Cryopreservation Of Nili-Ravi Buffalo Bull Semen: Yearly Postthaw Analyses To Depict Climatic Effects, Ejaz Ahmad, Muhammad Shakeel, Zahid Naseer, Adeel Ahmed, Mudussar Nawaz, Muhammad Saleem Akhtar
Cryopreservation Of Nili-Ravi Buffalo Bull Semen: Yearly Postthaw Analyses To Depict Climatic Effects, Ejaz Ahmad, Muhammad Shakeel, Zahid Naseer, Adeel Ahmed, Mudussar Nawaz, Muhammad Saleem Akhtar
Turkish Journal of Veterinary & Animal Sciences
The present study was aimed to observe the postthaw quality of Nili-Ravi buffalo bull semen cryopreserved during heat stress (hot summer months) and normal climatic conditions (fall, winter, and spring months). For this purpose, four (n = 4) adult regular donor Nili-Ravi buffalo bulls were selected to collect and cryopreserve their semen throughout the period of an entire year. The cryopreservation of semen was done following standard freezing protocol. The semen doses cryopreserved during heat stress and normal climatic condition were thawed to determine the sperm motility, motion kinetics, viability, plasma membrane integrity, acrosomal integrity, and morphological abnormalities (head, mid-piece, …
Acute Phase Proteins, Endocrine And Productive Responses Of Laying Hens To Heat Stress, Amani Aldawood, Hosam Altamimi
Acute Phase Proteins, Endocrine And Productive Responses Of Laying Hens To Heat Stress, Amani Aldawood, Hosam Altamimi
Turkish Journal of Veterinary & Animal Sciences
This study was designed to characterize changes in the acute phase proteins (APPs), hormones parallel to performance, and egg quality traits in laying hens exposed to heat stress (HS). A total of 120 sixteen-week-old Lohmann hens was allowed an adaptation period of 5 weeks in 3 different rooms at 21 °C. The hens were then exposed to one of three climatic thermal treatments over the next 6 weeks; thermoneutrality (TN, 21 °C), constant (C-HS, 28 °C), and cyclic HS (HS, 20 h/d at 28 ± 1 °C and 4 h/d at 33 ± 1 °C). Blood samples were weekly obtained, …
Novel Heat Index Models For Subtropical Region Based On Daily Milk Production Incrossbred Holstein Cows, Neeraj Kashyap, Atish Kumar Chakravarty, Bharti Deshmukh
Novel Heat Index Models For Subtropical Region Based On Daily Milk Production Incrossbred Holstein Cows, Neeraj Kashyap, Atish Kumar Chakravarty, Bharti Deshmukh
Turkish Journal of Veterinary & Animal Sciences
The quantification of the effect of heat stress imposed due to higher rate of heat gain on animal production is a prerequisite while estimating effects of heat stress. Temperature humidity index (THI) models developed empirically using meteorological parameters have been utilized as an indicator of heat stress. This study attempted to develop a heat index model with respect to productivity of the crossbred Holstein cows. More than 1.23 million daily milk yield records of 1860 crossbred cattle spread over a duration of 30 years were utilized. Statistically significant (p < 0.0001) partial regression coefficients were estimated as 0.0748 ± 0.0009 for dry bulb temperature (T$_{db}$) and -0.2228 ± 0.0011 for wet bulb temperature in model 1, -0.0182 ± 0.0005 T$_{db}$ and -0.1205 ± 0.0006 for vapour pressure in model 2, -0.0150 ± 0.0006 for Tdb and -0.1151 ± 0.0006 for dew point temperature in model 3 while as -0.1283 ± 0.0004 for T$_{db}$ and -0.0394 ± 0.0002 for relative humidity in model 4. The ratio of the partial regression coefficients of meteorological parameters (ß2/ß1) was -2.9791 in model 1, 6.8739 in model 2, 7.6731 in model 3 and 0.3073 in model 4. The developed THI models are based on the effect of meteorological parameters on daily productivity of the dairy animals, so the weightages to meteorological parameters were contrastingly different than the reported THI models. These models may successfully be used to evaluate the impact of heat stress on crossbred Holstein cows with respect to milk productivity and many other traits.
Ginkgo Biloba Extract Egb761 Improved Anti-Heat Stress Responses In Chickens In Vivo Via Regulation Of Heat-Shock Protein Expression And Distribution, Xiaohui Zhang, Miao Zhang, Endong Bao
Ginkgo Biloba Extract Egb761 Improved Anti-Heat Stress Responses In Chickens In Vivo Via Regulation Of Heat-Shock Protein Expression And Distribution, Xiaohui Zhang, Miao Zhang, Endong Bao
Turkish Journal of Veterinary & Animal Sciences
Heat stress is a lethal threat to chickens. This study investigated the protective effect of a Ginkgo biloba extract EGB761 against heat stress in chickens in vivo. A total of 200 one-day-old hens were separated randomly into control (Con), heat stress (HS), 0.1% EGB administration and heat stress (0.1% EGB+HS), 0.3% EGB administration and heat stress (0.3% EGB+HS), and 0.6% EGB administration and heat stress (0.6% EGB+HS) groups. After EGB761 administration for 45 days, ten chickens were selected randomly, assigned to one of the designated groups, and exposed to a one-time heat stress condition of 38 ± 1 °C for …
Thermal Rearing Environment Effect On Behavior And Metabolic Profile Of Laying Hens, Erika Rosendo De Sena Gandra, Rodrigo Garófallo Garcia, Gisele Aparecida Felix, Paulo Henrique Braz, Claudia Marie Komiyama, Ireilza De Alencar Nääs, Fabiana Ribeiro Caldara, Sandriele Goes De Campos Deboleto, Maria Fernanda De Castro Burbarelli, Kleber Pelicia
Thermal Rearing Environment Effect On Behavior And Metabolic Profile Of Laying Hens, Erika Rosendo De Sena Gandra, Rodrigo Garófallo Garcia, Gisele Aparecida Felix, Paulo Henrique Braz, Claudia Marie Komiyama, Ireilza De Alencar Nääs, Fabiana Ribeiro Caldara, Sandriele Goes De Campos Deboleto, Maria Fernanda De Castro Burbarelli, Kleber Pelicia
Turkish Journal of Veterinary & Animal Sciences
For the trial, 54 Bovans White laying hens were used at 95 weeks of age and were housed in groups of three birds per cage. A completely randomized design was used with a factorial scheme of treatments 2 × 3 (rations with two energy densities × three thermal environments). Corn-soybean meal based diets with similar composition, differing only in energy levels, were obtained with soybean oil inclusion (2750 kcal and 3250 kcal metabolizable energy (ME)). Climate-controlled rooms were used to mimic a thermoneutral environment (TE) (average temperature of 24.3 °C and relative humidity of 62.3%), a hot environment (HE) (average …
Biochemical And Physiological Responses Of Nili-Ravi Buffalo (Bubalus Bubalis) To Heatstress, Umair Younas, Muhammad Abdullah, Jalees Ahmed Bhatti, Nisar Ahmed, Faisal Shahzad, Musadiq Idris, Sana Tehseen, Muhammad Junaid, Saima Tehseen, Saeed Ahmed
Biochemical And Physiological Responses Of Nili-Ravi Buffalo (Bubalus Bubalis) To Heatstress, Umair Younas, Muhammad Abdullah, Jalees Ahmed Bhatti, Nisar Ahmed, Faisal Shahzad, Musadiq Idris, Sana Tehseen, Muhammad Junaid, Saima Tehseen, Saeed Ahmed
Turkish Journal of Veterinary & Animal Sciences
The present study was designed with an objective to evaluate the impact of various strategies to alleviate heat stress on certain physiological attributes viz. respiratory rate (RT), body surface temperature (BST), pulse rate (PR), and respiratory rate (RR); biochemical attributes viz. glucose, total protein (TP), and cholesterol; and endocrinological parameters (tri-iodothyronine and tetraiodothyronine) of the Nili-Ravi buffaloes during early summer season. Lactating Nili-Ravi buffaloes (n = 20) with close production and parity stage were divided into four treatment groups as group A (control group under roof shades only), B (experimental group under roof shades with antistress supplementation), C (experimental group …
The Effect Of Year, Month, Region, And Herd Size On Bulk Tank Somatic Cell And Standardplate Count, And The Determination Of Optimum Herd Size In The Intensive Holsteinfriesian Dairy Farms In The Turkish Republic Of Cyprus, Hati̇ce Di̇lek Arsoy
Turkish Journal of Veterinary & Animal Sciences
The objective of this study was to determine the effects of mount, year, region, and herd size on the bulk tank somatic cell count (SCC) and standard plate count (SPC) and total milk production of Holstein Friesian cows and to decide for optimum herd size in Northern Cyprus. The total number of cattle was 64,450 heads and the number of enterprises was 168 in 2016. The milk samples were collected once or twice a month from each herd. SCC and SPC were determined with the Fluoro-opto-electronic counter method. Herd sizes were described from small to extra-large enterprises for Northern Cyprus …
The Influence Of Vitamin C And Early-Age Thermal Conditioning On The Quality Of Meat And Specific Production Characteristics Of Broilers During Heat Stress, Zoran Ruzic, Zdenko Kanacki, Marija Jokanovic, Suzana Vidakovic, Slobodan Knezevic, Slavoljub Jovic, Smiljana Paras
The Influence Of Vitamin C And Early-Age Thermal Conditioning On The Quality Of Meat And Specific Production Characteristics Of Broilers During Heat Stress, Zoran Ruzic, Zdenko Kanacki, Marija Jokanovic, Suzana Vidakovic, Slobodan Knezevic, Slavoljub Jovic, Smiljana Paras
Turkish Journal of Veterinary & Animal Sciences
Heat stress (HS) is one of the greatest problems in contemporary chicken production and it entails significant economic losses. The purpose of this paper is to examine the influence of early-age thermal conditioning (ETC), vitamin C (Vit C) supplementation, and their combination on the production characteristics and specific quality parameters of the meat of broilers which were exposed to chronic HS in the last two weeks of breeding. Four hundred broilers (Cobb 500) of both sexes were divided into 4 experimental groups. Group C was given Vit C (2 g/L) dissolved in water from day 22 until the end of …
Nutrient Digestibility, Performance, And Egg Quality Traits Of Quails Raised In Different Stocking Densities And Ascorbic Acid Supplementation In A Hot, Tropical Environment, Adi Ratriyanto, Firmanda Firmanda, Heni Purwanti, Murjoko Murjoko
Nutrient Digestibility, Performance, And Egg Quality Traits Of Quails Raised In Different Stocking Densities And Ascorbic Acid Supplementation In A Hot, Tropical Environment, Adi Ratriyanto, Firmanda Firmanda, Heni Purwanti, Murjoko Murjoko
Turkish Journal of Veterinary & Animal Sciences
This study investigated the effects of stocking density (SD) and ascorbic acid (AA) supplementation on nutrient digestibility and laying performance of quails in a tropical environment. Four hundred and eight Japanese quails were designated in a 3 × 2 factorial arrangement with four replicates. The birds were distributed to three SDs, namely 40 (SD-1), 45 (SD-2), and 50 birds per m2 (SD-3) by allotting 15, 17, and 19 birds per cage, respectively (cage size: 3750 cm2). Each SD was supplemented with AA (0 and 250 mg/kg). Interaction was identified between SD and AA on egg production (P < 0.01), while the highest value was yielded in SD-2 supplemented with AA (83.6%). SD-3 achieved lower ether extract (EE) and crude fiber (CF) digestibility (P < 0.05) and eggshell thickness (P = 0.01) than SD-1 or SD-2. AA supplementation enhanced dry matter (DM), EE, CF, crude ash (CA), and calcium (Ca) digestibility (P < 0.05). AA improved egg weight, feed conversion, and protein and energy efficiency ratios as well as eggshell weight and thickness (P < 0.05). The SD of 45 birds per m2, combined with AA supplementation at 250 mg/kg, can be recommended for quails housed in hightemperature environments.
Impacts Of Vitamin C And E Injections On Ovarian Structures And Fertility In Holstein Cows Under Heat Stress Conditions, Juan GonzáLez Maldonado, Raymundo Rangel Santos, Raymundo Rodriguez De Lara, Gustavo Ramirez Valverde
Impacts Of Vitamin C And E Injections On Ovarian Structures And Fertility In Holstein Cows Under Heat Stress Conditions, Juan GonzáLez Maldonado, Raymundo Rangel Santos, Raymundo Rodriguez De Lara, Gustavo Ramirez Valverde
Turkish Journal of Veterinary & Animal Sciences
This study evaluated the effect of injecting vitamin C (VC) and E (VE) on size of the preovulatory follicle, volume of the corpus luteum, and pregnancy rates in Holstein cows under heat stress conditions (temperature humidity index > 74). Sixty-two cows were randomly assigned to one of four treatments: 1, control, n = 15: cows were not supplemented with vitamins; 2, VCG, n = 15: cows were simultaneously injected i.v. with 500 and s.c. with 2500 mg of VC before and after estrus; 3, VEG, n = 15: cows received an i.m. injection of 3000 IU of VE before estrus; 4, …
Circulating Metabolic And Reproductive Hormone Changes In Laying Hens Kept Under Various Heat-Combating Systems, Muhammad Safdar Anjum, Mansur Abdullah Sandhu, Zia Ur-Rahman, Anum Safdar
Circulating Metabolic And Reproductive Hormone Changes In Laying Hens Kept Under Various Heat-Combating Systems, Muhammad Safdar Anjum, Mansur Abdullah Sandhu, Zia Ur-Rahman, Anum Safdar
Turkish Journal of Veterinary & Animal Sciences
The objective of the present study was to observe the circulating metabolic, reproductive, and stress hormones in laying hen performance under different heat-combating systems (HCSs). A total of 500 White Leghorn pullets at 24 weeks of age were subjected to four HCSs, i.e. desert cooling (DC), water sprinkling (WS), time limit feeding (TLF), and ascorbic acid (AA) supplementation, at environmental temperatures from 32.30 to 40.80 °C with 76.40% relative humidity. Blood was collected before heat stress, at peak stress, and after heat stress to collect plasma. The results of the 24-week stress period showed significantly less circulating T3, T4, estrogen, …
Comparative Efficacy Of Antioxidant Retinol, Melatonin, And Zinc During In Vitro Maturation Of Bovine Oocytes Under Induced Heat Stress, Jafrin Ara Ahmed, Devojyoti Dutta, Nawab Nashiruddullah
Comparative Efficacy Of Antioxidant Retinol, Melatonin, And Zinc During In Vitro Maturation Of Bovine Oocytes Under Induced Heat Stress, Jafrin Ara Ahmed, Devojyoti Dutta, Nawab Nashiruddullah
Turkish Journal of Veterinary & Animal Sciences
Both A and B grade cumulus-oocyte complexes (COCs) aspirated from cattle ovaries at slaughter were matured in vitro under normal (38.5 °C) and elevated temperatures (41 °C). Maturation competence based on cumulus expansion, COC diameter, and nuclear maturation were compared with and without antioxidant supplementation incorporating 7.5 µM retinol, 1 nM melatonin, and 1.5 µg/mL zinc chloride in an oocyte maturation medium. Heat stress significantly reduced cumulus expansion by approximately 20%, while only retinol could bring a significant (P ≤ 0.05) increase. Heat stress also decreased expansion of A (approximately 50%) and B (approximately 40%) grade COC diameter. All antioxidants …
Reproductive Performance And Serum Concentrations Of Progesterone Of Heat-Stressed Holstein Heifers Subjected To Timed Artificial Insemination And Progesterone Supplementation, Abelardo Correa Calderon, Juan Augusto Hernandez Rivera, Leonel Avendaño Reyes, Ulises Macias Cruz, Raul Diaz Molina, Francisco Daniel Alvarez Valenzuela, Arnoldo Gonzalez Reyna
Reproductive Performance And Serum Concentrations Of Progesterone Of Heat-Stressed Holstein Heifers Subjected To Timed Artificial Insemination And Progesterone Supplementation, Abelardo Correa Calderon, Juan Augusto Hernandez Rivera, Leonel Avendaño Reyes, Ulises Macias Cruz, Raul Diaz Molina, Francisco Daniel Alvarez Valenzuela, Arnoldo Gonzalez Reyna
Turkish Journal of Veterinary & Animal Sciences
Sixty-nine Holstein heifers were used to evaluate the effect of progesterone supplementation after timed artificial insemination (TAI) on conception rates of heifers under heat stress. Heifers were randomly assigned to 1 of 3 treatments: 1) control treatment (C), visual detection of estrus. Heifers detected in estrous were inseminated according to the AM-PM procedure (n = 23); 2) TAI (n = 24), using a CIDR device (insert containing progesterone) placed intravaginally on day -10 and removed on day -2 with PGF2α given on day -3. Heifers were given 0.5 mg of ECP at CIDR insertion and a second injection (0.5 mg …
Thermoregulation Differs In Chinampo (Bos Taurus) And Locally Born Dairy Cattle, Jose L. Espinoza, Jesus Sanchez, Jose A. Gracia, Jesus R. Sanchez, Ricardo Ortega, Alejandro Palacios
Thermoregulation Differs In Chinampo (Bos Taurus) And Locally Born Dairy Cattle, Jose L. Espinoza, Jesus Sanchez, Jose A. Gracia, Jesus R. Sanchez, Ricardo Ortega, Alejandro Palacios
Turkish Journal of Veterinary & Animal Sciences
In order to evaluate heat tolerance, physiological constants of 32 cows were measured (Chinampo: n = 12; Holstein: n = 10; Jersey: n = 10). From June to December 2006, rectal temperature and respiratory rate were recorded every Monday at 0600 and 1700 h. Holstein rectal temperature was affected by heat most, followed by Jersey, and Chinampo (the most heat-resistant). Respiratory rate of the 3 breeds was affected by climatic factors, but the Holstein and Jersey cows registered values higher than those of Chinampo cows. With a temperature-humidity index (THI) above 72 the physiological variables of all 3 breeds increased. …
Physiological And Biochemical Responses In German Fawn Kids Subjected To Cooling Treatments Under Mediterranean Climate Conditions, Sezen Ocak, Nazan Darcan, Soner Çankaya, Tamer C. İnal
Physiological And Biochemical Responses In German Fawn Kids Subjected To Cooling Treatments Under Mediterranean Climate Conditions, Sezen Ocak, Nazan Darcan, Soner Çankaya, Tamer C. İnal
Turkish Journal of Veterinary & Animal Sciences
This study was conducted to determine the effects of different physical modifications (sprinkler and fan) related to heat stress during summer on relevant blood biochemical measures and physiological responses, such as rectal temperature (RT), respiration rate (RR), heart rate (HR), testis temperature (TT), and head temperature (HT), in kids. In total, 32 male German Fawn × Hair kids at 6 months of age were divided into 4 groups of 8. Treatments were as follows: group A: (no sprinkler, no fan) (control); group B: sprinkler only (at 1000-1100 and 1400-1500), no fan; group C: fan (1.5 m/h between 1000-1800), no sprinkler; …
The Effects Of Vitamin E On The Antioxidant System, Egg Production, And Egg Quality In Heat Stressed Laying Hens, Hasret Yardi̇bi̇, Gülhan Türkay Hoştürk
The Effects Of Vitamin E On The Antioxidant System, Egg Production, And Egg Quality In Heat Stressed Laying Hens, Hasret Yardi̇bi̇, Gülhan Türkay Hoştürk
Turkish Journal of Veterinary & Animal Sciences
An experiment was carried out to investigate the effect of vitamin E on the metabolic impact of heat stress in hens. The study included 150 Leghorn laying hens, which were assigned to 2 groups and initially subjected to the same environmental conditions. Diets were based on standard layer rations with 30, 80, or 105 mg of vitamin E/kg. All birds were kept in 45% relative humidity (RH) and at a room temperature of 21 °C for first 3 weeks for adaptation. In the fourth week the temperature and RH were increased to 35 °C and 65%, respectively, in the experimental …
Effect Of Season On Some Fertility Parameters Of Dairy And Beef Cows In Elazığ Province, Mustafa Sönmez, Eşref Demi̇rci̇, Gaffari̇ Türk, Seyfetti̇n Gür
Effect Of Season On Some Fertility Parameters Of Dairy And Beef Cows In Elazığ Province, Mustafa Sönmez, Eşref Demi̇rci̇, Gaffari̇ Türk, Seyfetti̇n Gür
Turkish Journal of Veterinary & Animal Sciences
This study was conducted to investigate the effects of seasons on some fertility parameters of dairy and beef cows in Elazığ province. A total of 511 multiparous dairy and beef cows in four commercial herds were used as material in the study. Climatic data were obtained from reports prepared at the Department of Meteorology in Elazığ. Daily maximum, minimum and average ambient temperatures and relative humidity were recorded throughout the year. Estruses were detected by observation twice a day. The expression of overt estrus was evaluated observing the degrees of signs of estrus. Cows were inseminated artificially after about 12 …
Effects Of Ascorbic Acid On The Performance And Some Blood Parameters Of Japanese Quails Reared Under Hot Climate Conditions, Mehmet Avci, Muğdat Yertürk, Oktay Kaplan
Effects Of Ascorbic Acid On The Performance And Some Blood Parameters Of Japanese Quails Reared Under Hot Climate Conditions, Mehmet Avci, Muğdat Yertürk, Oktay Kaplan
Turkish Journal of Veterinary & Animal Sciences
The effects of ascorbic acid on the performance and some blood parameters of Japanese quails reared under hot conditions were investigated. Three hundred Japanese quails, 7 days of age, were randomly divided into one control and two experimental groups, comprising five replicates of 20 birds each. Ascorbic acid (500 and 1000 mg/kg) was given to the experimental groups. The body weight gain increased significantly (P < 0.05) in the group given 500 mg/kg of ascorbic acid until the fourth week. Feed consumption also increased (P < 0.05), depending on the quantity of ascorbic acid supplementation until the fourth week. However, ascorbic acid did not affect the concentrations of blood pH, PCO_{2}, sodium (Na), potassium (K), hematocrit (PCV), bicarbonate (HCO_{3}), or hemoglobin (Hb). In conclusion, 500 mg/kg of ascorbic acid may be added to the quail diet to prevent heat stress until the fourth week.
Effects Of Vitamin C Supplementation On Egg Production Traits And Eggshell Quality In Japanese Quails (Coturnix Coturnix Japonica) Reared Under High Ambient Temperature, Hüsnü Erbay Bardakçioğlu, Mehmet Kenan Türkyilmaz, Ahmet Nazligül, Ahmet Gökhan Önol
Effects Of Vitamin C Supplementation On Egg Production Traits And Eggshell Quality In Japanese Quails (Coturnix Coturnix Japonica) Reared Under High Ambient Temperature, Hüsnü Erbay Bardakçioğlu, Mehmet Kenan Türkyilmaz, Ahmet Nazligül, Ahmet Gökhan Önol
Turkish Journal of Veterinary & Animal Sciences
This study was carried out to investigate the effects of dietary vitamin C supplementation on some egg production traits and eggshell quality in Japanese quails reared under high ambient temperature. One hundred fifty-eight 11-week-old female Japanese quails were used. The birds were divided into 4 dietary treatment groups according to vitamin C levels as follows: control (basal ration), treatment I (basal ration + 150 ppm vitamin C), treatment II (basal ration + 250 ppm vitamin C) and treatment III (basal ration + 500 ppm vitamin C). The quails were housed for 9 weeks at high ambient temperature (34 ± 2 …
The Effects Of Dietary Probiotic Supplementation On Some Productivity And Blood Parameters Of Laying Quails Raised Under Constant Heat Stress, Ahmet G. Önol, Mustafa Sari, Fatma Karakaş Oğuz, Beyhan Gülcan, Göksel Erbaş
The Effects Of Dietary Probiotic Supplementation On Some Productivity And Blood Parameters Of Laying Quails Raised Under Constant Heat Stress, Ahmet G. Önol, Mustafa Sari, Fatma Karakaş Oğuz, Beyhan Gülcan, Göksel Erbaş
Turkish Journal of Veterinary & Animal Sciences
A study was carried out to determine the effects of yeast based (Biosacc^TM) and mixture of bacteria-mold-yeast based (Protexin^TM) dietary probiotics on live weight, feed consumption, feed efficiency, egg production, egg weight, egg shell weight, and some blood parameters of quails raised under constant heat stress conditions. One hundred and ninety-eight 9-week-old Japanese quails (Coturnix coturnix Japonica) were used in the experiment. They were randomly assigned in equal numbers to three treatments: a control and two dietary probiotic treatments. Dietary treatments had six replicates with 11 quails in each. Three dietary treatments were formed by the inclusion of either no …
Preventing Heat Stress With Different Feeding Methods In Laying Hens, O. Ni̇hat Ertaş, Kazim Şahi̇n
Preventing Heat Stress With Different Feeding Methods In Laying Hens, O. Ni̇hat Ertaş, Kazim Şahi̇n
Turkish Journal of Veterinary & Animal Sciences
In this study, the effects of different density diets (15% HP, 2700 kcal/kg ME, Diet N; 18% HP, 3025 kcal/kg ME, Diet Y), and different feeding methods on yield, egg quality, blood acid-base balance, serum metabolites, and nutrient digestibility were determined in laying hens at heat stress. Sixteen-week-old hens (Ross Brown) were divided into 6 group of 30 hens each and study was conducted in a 3 x 2 factorial experimental design. The diets were given to animals by three methods during heat stress. The feeding methods were as follows. Both diets were given to hens through traditional ways (Control …
Effects Of Heat Stress On Some Blood Parameters In Broilers, Özge Altan, Ali̇ Altan, Meti̇n Çabuk, Hakan Bayraktar
Effects Of Heat Stress On Some Blood Parameters In Broilers, Özge Altan, Ali̇ Altan, Meti̇n Çabuk, Hakan Bayraktar
Turkish Journal of Veterinary & Animal Sciences
The purpose of the present study was to determine the effects of acute heat stress on the proportions of leucocyte components and hematocrit values in broiler chickens. Exposure of broiler chickens to 39±1 °C for 2 h at 44 d of age caused an increase in rectal temperatures, and in heterophil and basophil ratios. The H/L ratio also increased from 0.25 to 0.43. The exposure of the broilers to acute heat stress resulted in decreased monocyte and lymphocyte proportions whereas the proportion of eosinophil and the hematocrit values were not affected. It was concluded that a temperature high enough to …